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JUNE 2013 the official magazine of CSDA

Mile-High Cutting

Denver International Airport Expansion Project

Silica Dust Controls in Concrete Construction GPR IDENTIFIES PROBLEM AREAS IN SPILLWAY BRIDGE Civil War Monument Cut and Restored

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President’s Page



he founding mission of CSDA was to promote the use of specialty sawing and drilling contractors and their methods. Over the years, these methods have evolved along with technology to encompass several new fields. Therefore, the structure of the association is adapting and its mission is being updated to reflect this evolution. CSDA membership has expanded to include not only specialty sawing and drilling contractors, tools and equipment, manufacturers and suppliers, but now includes selective demolition, surface grinding and polishing specialists and concrete imaging professionals. As these areas of expertise have grown, so has the need for articulating Best Practices, Standards, Specifications, Tolerances and training programs for each. The association has formed several committees to actively engage with industry professionals and produce materials and training courses that will enhance the professionalism, productivity and safety of contractors who perform this type of work. CSDA maintains a specialized training facility at St. Petersburg College in Clearwater, Florida, and provides training and certification courses at various locations across the U.S. each year. Training courses have also been held during the World of Concrete trade show and exhibition in Las Vegas for the past three years and more are planned for the 2014 show. These courses are designed to provide “classroom”

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education along with hands-on experience and troubleshooting sessions. CSDA offers all this, plus an online training program that is available 24/7. Choosing to train employees in new (and old) areas of expertise is an investment, and will only add to a company’s professionalism and help it grow. Employees are a company’s most important asset. Their value will continue to increase when a company invests in their education, safety and training. I encourage all those within the industry to look into the benefits of CSDA membership and utilize what is offered. Take time to review the latest CSDA Membership Directory and Resource Guide, either in hard copy or via Everyone has access to the association’s training courses and a selection of documents, while members can take advantage of large discounts, utilize safety materials, share information with their peers at scheduled events and much more. By using just some of CSDA’s past investments, you can expand your future. Take some training, evaluate it and help the association improve and innovate. This way, CSDA’s investment in future safety and training will be exactly what you need, when you need it.

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the official magazine of CSDA


concrete cases

President, Judith O’Day Terra Diamond Industrial Vice President, Kevin Baron Western Saw, Inc. Secretary/Treasurer, Mike Orzechowski DITEQ Corporation Past President, Jim Dvoratchek Hard Rock Concrete Cutters, Inc. Executive Director, Patrick O’Brien Concrete Sawing & Drilling Association

CSDA BOARD OF DIRECTORS (Terms expiring in 2014)

Mile-High Cutting


Kevin Baron Western Saw, Inc. Tim Beckman Cutting Edge Services Corporation Paul DeAndrea DeAndrea Coring & Sawing, Inc. Steve Garrison Hilti, Inc. Donna Harris Concrete Renovation, Inc.

On the Right Track


Ron Rapper Husqvarna Construction Products

CSDA BOARD OF DIRECTORS (Terms expiring in 2015) Ty Conner Austin Enterprise Matt Dragon GSSI, Inc.

Greg Lipscomb Diamond Products Limited Sid Kilgore Dixie Diamond Manufacturing

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Concrete Cutter Prevents Job From Going Off the Rails

Tuttle Creek Spillway Bridge


Matthew Finnigan National Concrete Cutting Mike Greene Greene’s, Inc.

Denver International Airport Expansion Project

GPR Provides Army Corps of Engineers with a Vision

A Job of Stature


Civil War Monument Restored by CSDA Members

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Concrete Openings Magazine Official Magazine of the Concrete Sawing & Drilling Association Volume 22, Number 2 ISSN: 1093-6483 Concrete Openings magazine is published by O’Brien International, Inc., four times each calendar year in March, June, September and December. Editorial contributions are welcomed and advertisements are encouraged. Please contact the Concrete Sawing & Drilling Association 13577 Feather Sound Drive, Suite 560 Clearwater, FL 33762 Tel: 727-577-5004 Fax: 727-577-5012 Magazines, newspapers and private individuals are welcome to reproduce, in whole or part, articles published herein provided that acknowledgements are made in the following manner: “Reprinted courtesy of the Concrete Sawing & Drilling Association, Concrete Openings magazine, Issue Date.” No alterations should be made in the text of any article. Publisher Patrick O’Brien ASSOCIATE Editor Russell Hitchen CONCRETE CASE Contributors Juan Botero Mark DeSchepper Henk Dykhouse Matt Gehman Robert Lodge John Miller Editorial Review Committee Skip Aston Rod Newton Pat Stepenski The information and recommendations in this magazine are provided for use by fully qualified, professional personnel. The Concrete Sawing & Drilling Association and the publisher disclaim any responsibility as to their use by readers and shall not be liable for damages arising out of the use of the foregoing information. All bylined articles published in this magazine represent solely the individual opinions of the writers and not necessarily those of the Concrete Sawing & Drilling Association.

c o n t e n t s 12 CSDA 2013 Convention and Tech Fair 20 Polished Perspective Densifiers Demystified


IACDS Diamond Award Winners Announced at bauma 2013

30 Core Health CrossFit and the Paleo Diet

34 Tech Talk

History and Improvements of Diamond Blade Manufacturing


The Business of Business

How to Close the Sale in the Google Era

42 Social Media Focus

Presenting Yourself Professionally: In the Flesh, On the Podium and On the Web

46 Safety Counts

Silica Dust Controls in Concrete Construction

49 OSHA/CSDA Alliance Latest 50 Industry Bits 56 Certification 57 Membership 60 Calendar 64 Director’s Dialogue

46 Cover Photo: Denver International Airport expansion project (image courtesy of Denver International Airport). 4 | J U NE.1 3


Sections of a concrete patio were to be removed from the main terminal building. 6 | J U NE.1 3

Photo courtesy of Juan B. Botero




Denver International Airport Expansion Project

Photo courtesy of Denver International Airport

To facilitate a massive $500 million expansion project at Denver International Airport (DIA), a concrete cutting specialist has been working on multiple contracts to assist with retrofits, adjustments and cutting services at the main terminal building. One of the latest tasks assigned to the contractor was the cutting and removal of an 8-inch-thick patio deck that was built against a glass wall facing the airport’s security screening area. Therefore, all eyes would be on the operators as they cut sections weighing up to 60,000 pounds each. With its signature fabric roof, DIA is currently the fifth-busiest airport in the nation. Seasoned travelers know that DIA is an art-driven monument to modern transportation architecture that is appreciated, photographed and studied by tourists, artists, engineers and building designers worldwide. What many of these travelers may not realize, however, is that sawing and drilling concrete with diamond tools continues to play a key role in forging DIA’s infrastructure, and has done so since the airport broke ground in 1989.

“This is an extremely high profile venue and one of our most important customers,” stated Will Hillen, Jr. of Hillen Corporation in Commerce City, Colorado, demolition contractor for the project. “Working at DIA is no easy task. This is one of the most highly supervised venues you can find. They conduct background checks on all workers, and there is a high level of scrutiny due to security concerns related to the travel industry. DIA requires that we hire skilled people who will do their utmost to minimize disruptions to airport operations.” The airport is a business powerhouse that generates $22 billion dollars of revenue for the regional economy every year. By 2015, DIA will have expanded to accommodate a state-of-the-art Westin Hotel featuring 519 rooms and a conference center, a public plaza for community events and concessions as well as a public transit center that will include a Regional Transportation District (RTD) commuter rail station connecting DIA to downtown Denver. The expansion started in 2011, and since that time CSDA member Diamond Drilling & Sawing Company (DDSC) of Denver has been a part of the project. In fact, the contractor did its first job at DIA over 25 years ago.

Photo courtesy of Denver International Airport

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Operators cut through the reinforced concrete using slab saws with 18- and 24-inch-diameter blades. “We’ve completed lots of jobs at DIA, but one of the most significant ones we did was the removal of the exterior reinforced concrete patio by security screening area,” said Henk Dykhouse, president of DDSC. “Our client, Milender White Construction, rented a 500-ton Liebherr hydraulic crane to lift the platform sections that our crews cut loose. The tip of the crane boom cleared the cabling supporting the fabric roof by less than 10 inches while dangling the 60,000-pound platform sections less than 20 inches from the glass wall. Needless to say, the smallest slip would have created a PR nightmare for everyone involved. And if there was one thing we didn’t want to be associated with, it was damaging something at DIA. This was a tough job, no question about it, but these are the types of contracts that we usually get called to work on.” DDSC has provided sawing and drilling services for many electrical, mechanical, fire safety and plumbing subcontractors at the airport. These services have been essential for the installation of new hardware and the re-routing of existing equipment. Work has included the drilling of holes, making numerous floor and wall cuts or other minor adjustments. However, this latest job presented Dykhouse and his team with a more unusual challenge. “Due to the nature of the venue, there truly wasn’t any traditional method of demolition that could have been seriously considered,” explained Dykhouse. “The only option we had was to cut the patio and crane it off quietly and discretely without any disruption to airport operations. We couldn’t do anything that would either crack the concrete, leave a jagged edge or alarm travelers. This job had to be done carefully and in full view of thousands of people flowing through the airport. It was an extremely high-risk operation that would have landed us in the news if anything had gone wrong.” For the patio removal, a crew from DDSC did a series of rectangular cuts using primarily a Husqvarna FS 4400 D slab saw fitted with 18- and 24-inch-diameter blades. Operators first drilled 6-diameter holes into the

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Photo courtesy of Juan B. Botero

platform so that cables could be run through them to attach to the crane. This provided the needed support for the platform as the slab saw did its work. The cut on the platform had to be perfect—if anything was still attached as it was pulled away from the glass, the rigging would have snapped, causing a pendulum swing that would have sent the platform crashing back through the glass wall. The 8-inch-thick patio was reinforced with steel rebar and was attached to a series of I-beams. The steel beams were partially cut by DDSC and cut completely free by the use of cutting torches. The patio was cut into six pieces each measuring approximately 40 feet long. Due to parts of the patio being curved in design, widths varied from 10 to 25 feet. It took the cutting team and crane operator around four hours to cut and remove each of the six pieces, completing the work in three work days. When cutting the patio, safety concerns included the proximity to the glass wall facing the security area, the proximity of the tip of the crane boom to the fabric roof structure and working near the leading edge of the platform that had a 50-foot drop. DDSC workers wore their fall protection PPE while the crane operator and a team of spotters managed the proximity concerns between the glass and the roof using two-way radios. “Our contractors understand that maintaining the safe operation of our facility is our top priority for a multitude of reasons,” stated Laura Coale, media relations director for DIA. “This is a unique environment that requires a great deal of screening and we must be sure that we are constantly following security procedures. We also need to meet FAA safety regulations, especially when there are vertical structures like cranes and new buildings involved. With 1,700 flights per day, this is a very busy airspace. It is a highly-visible, iconic venue in the region and there are safety and security procedures that we take very seriously. Our contractors understand the magnitude of our operations and they work closely with the airport to ensure their work contributes to making DIA a world-class airport,” she concluded.



The cut sections were rigged and lifted out by a 500-ton crane.

Photo courtesy of Juan B. Botero

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Photo courtesy of Juan B. Botero

Six cut sections were removed, weighing up to 60,000 pounds each.

Photo courtesy of Juan B. Botero

Thanks to the work of DDSC, the DIA expansion project remains on schedule for completion in 2015. The contractor already has more work lined up at the airport, following on from tasks done in 2011 related to the expansion of rail links. The contractor made a series of cuts for the installation of a switch-gear system underneath the main terminal building. The system is designed to enable trains to change tracks instead of running on parallel tracks only. This new feature will enable DIA to increase passenger carrying capacity in line with the expected increase in visitors to the venue. This work is only fitting, as DDSC has also been a key partner to the Denver RTD rail system. The company’s involvement has included work on the Transportation Expansion (T-REX) highway and rail expansion and at multiple transportation venues throughout Denver. Part of the next phase of expansion work at DIA also includes a rail link to Denver Union Station, and DDSC is involved in this project too. This connection will not only resurrect the old Union Station, but convert it into the main hub for RTD. The connection will open up links to Jefferson County and I-225 to the East as part of Denver’s transportation upgrade. Look out for more details in a future issue of Concrete Openings.

Hillen continues to be impressed with the cutting contractor’s work. “Henk and his team have always been able to pull through for us. Henk has built a great team and as far back as I can remember, they have always been known for having an amazing safety record and a past-performance portfolio that is unparalleled.” “Twenty five years after our first contract with DIA, we continue to support the venue’s construction operations and current expansion activities for the hotel and conference center. We are very proud to be partnering with the airport as it continues to be a critically important engine for economic growth in the State of Colorado,” concluded Dykhouse. REVIEW AND COMMENT ON THIS ARTICLE AT:

Company Profile Based in Denver, Colorado, Diamond Drilling & Sawing Company was founded in 1959 and offers the services of flat sawing, floor grinding, selective demolition, core drilling, wall sawing, wire sawing and hand sawing. Having started with one truck and two employees, the company now has 20 trucks and 40 employees. Diamond Drilling & Sawing Company has been a member of CSDA since 1995.

Resources General Contractor: Milender White Construction Sawing and Drilling Contractor: Diamond Drilling & Sawing Company Denver, Colorado Phone: 303-733-3741 Email: Website: Methods Used: Core drilling, slab sawing The cutting work is part of a $500 million project to expand the airport.

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CSDA 2013

Convention and Tech Fair

Event Gives Attendees the Key to the Future Industry professionals from North America and beyond traveled to Duck Key, Florida to attended CSDA’s 41st annual flagship event and jumpstart their new year with fresh ideas and strategies. The main focus of this year’s convention, held February 26 to March 2 at Hawk’s Cay Island Resort, was the next generation of industry leaders who are truly the key to the future. Keynote speaker Seth Mattison, a nationally recognized expert on the Millenial and Gen Y generations, focused on the importance of Bridging the Generational Gap and explained how doing so can lead to greater productivity, creativity and worker satisfaction. His message highlighted ways to help leaders and managers maximize the capabilities of their young talent, as well as showing how to maintain connections with their experienced workforce. Many attendees felt that Mattison’s high-energy keynote address was the best given in the history of CSDA conventions.

“I found Seth’s keynote speech very enthralling. What he said about inter-generational implications was very relevant, but also would apply to cross-cultural issues,” said Henk Dykhouse of Diamond Drilling & Sawing Co. in Denver, Colorado. Ten business sessions were held, including Methods to Reduce Water Usage and Slurry Pickup as well as Job Costing Analysis and Estimating, Managing and Executing Successful Polishing Projects. The convention theme was driven by the CSDA Next Generation Committee, who scheduled two roundtable discussions entitled If I Knew Then What I Know Now and So You Think You Want to Buy the Company? These roundtables brought together business owners young and old to discuss key aspects of business succession and share important lessons learned from many years of experience. First-time convention attendee Ed Lounsberry of EXCO, Inc. in Bensalem, Pennsylvania, was impressed with the sessions. “It was our first time at a CSDA convention. We met a lot of knowledgeable people with great ideas, and hope to be back next year. The programs were timely for us and the content was right on.” In addition to business sessions, networking opportunities and social events, the ever-popular CSDA Tech Fair had 23 exhibitors and

Back row (from left to right): Sid Kilgore, Steve Garrison, Matt Dragon, Tim Beckman, Kevin Baron. Middle Row: Mike Orzechowski, Paul DeAndrea, Patrick O’Brien, Ty Conner, Matthew Finnigan, Donna Harris. Front Row: Judith O’Day, Jim Dvoratchek, Mike Greene, Ron Rapper, Greg Lipscomb.

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drew a healthy crowd. Attendees appreciated the chance to talk with manufacturers in an intimate setting, something that often cannot be achieved at large trade shows. Even before the official start of the Convention and Tech Fair, the association showed how it is ready for the challenges of the next generation. In line with the introduction of the Imaging Contractor and Polishing Contractor membership categories in 2012, committees were formed and members met for the first time at the Florida convention. Members of these committees aim to develop documentation and training programs that will help professionals excel in these disciplines, much like what has been done with CSDA’s existing hands-on and online training. The current training program boasts 29 classes with over 3,700 graduates. The association’s Annual General Meeting was held during the convention, where Judith O’Day, Terra Diamond Industrial, Salt Lake City, Utah was elected to serve as CSDA President for a two-year term. O’Day becomes the second woman to serve as President, following Susan Hollingsworth’s election in 2005. Kevin Baron, Western Saw, Oxnard, California was elected as Vice President and Mike Orzechowski, DITEQ Corporation, Lee’s Summit, Missouri, remains as Secretary/Treasurer. Jim Dvoratchek, Hard Rock Concrete Cutters, Inc., Wheeling, Illinois now serves as Past President while Patrick O’Brien continues as Executive Director. “I am honored to be the new President of the association” said O’Day. “Over the last 40 years, the leadership and dedication of each new group of CSDA committee chairs and members, elected Board members and Officers has been exemplary. I look forward to working with the newly-elected Board members, committees and staff to further grow the association and help its membership maintain successful businesses.” Six Board members, whose terms expire in 2015, were elected. They are Ty Conner, Austin Enterprise, Bakersfield, California; Matt Dragon,

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GSSI, Salem, New Hampshire; Matthew Finnigan, National Concrete Cutting Inc., Milton, Washington; Mike Greene, Greene’s, Inc., Woods Cross, Utah; Sid Kilgore, Dixie Diamond Manufacturing, Lilburn, Georgia and Greg Lipscomb, Diamond Products Limited, Elyria, Ohio. Returning for the second year of their term are Kevin Baron, Western Saw, Inc., Oxnard, California; Tim Beckman, Cutting Edge Services Corp., Batavia, Ohio; Paul DeAndrea, DeAndrea Coring & Sawing, Inc., Henderson, Colorado; Steve Garrison, Hilti, Inc., Santa Fe Springs, California; Donna Harris, Concrete Renovation, San Antonio, Texas and Ron Rapper, Husqvarna Construction Products, Olathe, Kansas. By working with the industry’s next generation of leaders and decision makers, and by providing exciting keynote speakers with important messages, CSDA is showing its membership that it holds the key to the future. For those interested in finding their key to the future, the association has scheduled meetings each quarter across the U.S., and CSDA’s 42nd Annual Convention and Tech Fair will be held at The Westin La Paloma Resort & Spa in Tucson, Arizona on March 11-15, 2014. For more information, visit, call the CSDA office at 727-577-5004 or email

CSDA Lifetime Achievement Award While the main focus of the convention was the future of the industry, time was taken to acknowledge the hard work and dedication of those who have helped shape it. The CSDA Lifetime Achievement Award was presented to Past President Steve Garrison of Hilti, Inc. for his outstanding contribution to Steve Garrison the association. Garrison has been involved in the industry for over 30 years and continues to be an active member of the association, serving on the current Board of Directors. Outgoing CSDA President, Jim Dvoratchek of Hard Rock Concrete Cutters, Inc., presented the award to Garrison, who becomes only the fifth person to receive the award. The two were joined by Past President Ted Johnston of Di-Tech International, Inc. in Canada, who nominated Garrison for the award.

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A 15,000-foot-long concrete rail footing required cutting.

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On the

Right Track

Concrete Cutter Prevents Job From Going Off the Rails


In February 2013, a specialist concrete cutting contractor was hired to cut a 15,000-foot stretch of 22-inch-thick reinforced concrete on a railway in Edgerton, Kansas. The cutting was just part of a larger project to converge two facilities into a 1,000-acre intermodal and logistics park. Burlington North Santa Fe (BNSF) Railway of Fort Worth, Texas is developing a 440-acre intermodal facility and 560-acre logistics park to provide businesses with a direct connection to the global supply chain via a transcontinental railroad that begins in Long Beach, California and terminates in Chicago, Illinois. The facility will provide multi-modal transportation for many goods being imported from China and the Pacific Rim. It will offer companies the ability to quickly and efficiently ship goods by rail and truck to their final destinations. The concrete structure in need of cutting was a footing used by rail car cranes, which runs parallel to the rail tracks to allow rail cars to be lifted to and from the train. Although this was a new stretch of footing, it was discovered that the poured concrete had “honey-

The contractor built custom frames with wall saws fitted on the sides.

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C O N C RETE combed� around the reinforcing steel rebar and had to be replaced. Basically, voids were present in the concrete due to failure of the mortar to effectively fill the spaces among coarse-aggregate particles. This is often referred to as a honeycombed effect. The facility owners had considered demolishing and replacing the entire structure. However, the majority of the concrete was in good condition so the company came up with a plan to remove and replace the top 12 inches of the structure before reinstalling the rails. A time frame of just 25 days was specified to complete the work. CSDA member Miller’s Pro-Cut, Inc. of Grandview, Missouri was awarded the job. The footing measured approximately 8 feet tall, 22 inches wide and the concrete had been monolithically poured. Around 6 feet of concrete was buried beneath the grade with 2 feet above the surface. Miller’s Pro-Cut was contracted to make 8-inch-deep horizontal cuts on both sides of the footing wall, 12 inches from the top. The cuts broke through the reinforcement and left 6 inches of uncut concrete in the center. The next task for the operators was to make 22-inch-long section cuts every 15 feet across the top of the wall to a depth of 12 inches. This would allow the general contractor to use an excavator to break off each 15-foot-long, 22-inch-thick and 12-inchdeep section without damaging the existing wall.


The wall saws each cut 8 inches deep, 12 inches from the top of the footing.

Operators moved along the footing between 37 and 40 feet per hour.

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C O N C RETE “The production rate required by BNSF was going to take more resources than what we had at the time,” said John Miller, owner of Miller’s Pro-Cut. “We needed to come up with a way to increase production for this wall sawing operation while using the same amount of staff and equipment.” A rather innovative design helped the cutting contractor do just that. Shop engineers built custom frames to straddle the wall and accommodate a wall saw on each side. Wheels and other buffers were attached to move the frame along the concrete footing, keeping the saws steadily mounted close to the structure. The frames were propelled along the footing by Soff-Cut slab saws while the wall saws did the cutting. Because the ground around the concrete was uneven, Miller’s Pro-Cut made modifications that would allow the frames to travel along without causing the saw blades to bind in the cut. The design not only allowed an operator to run two wall saws at the same time, but also eliminated the need for operators to mount wall saw tracks to the concrete. This dramatically improved sawing production while maintaining quality. Wall saws supplied by Diamond Products, GDM Technologies and Hilti were secured to the frames, each with 30-inch-diameter diamond blades from Diamond Products and Hilti, to make the required 8-inchdeep cuts. Operators began their work using two custom frames, each fitted with two saws. The operators started at opposite ends of the footing and worked towards each other. Each of the four wall saws cut 7,500 feet of concrete at 40 feet per hour with blade speeds between 1,000 to 1,500 RPM. The section of concrete footing took 20 days to cut using three operators with the two custom frames engineered by Miller’s Pro-Cut. The cutting team created two 15,000-foot-long cut lines measuring 8 inches deep, totaling 30,000 linear feet. It was then time for the operators to turn their attention to creating 1,100 cuts 22 inches wide and 12 inches deep across the top of the footing at 15-foot intervals. The shape of the structure, combined with the required cutting depth, quantity of cuts and a limited time frame, meant Miller’s Pro-Cut had to think outside the box to get the job done. A Husqvarna 85-horsepower walk-behind diesel saw fitted with a 30-inchdiameter blade was mounted to a Genie lift to perform the cutting work. The lift platform was positioned on top of the footing so that an operator could move along and make the cut. Each cut took around three minutes to complete. The cut sections of concrete footing were then removed by an excavator. The machine tapped the top of each 15-foot section to break it free from the 6-inch-wide uncut area, then it was picked with bucket and thumb and moved from the work area. In total, 27,500 cubic feet of concrete was removed. Each cut section weighed 4,200 pounds. Despite the contractor’s best efforts and use of innovation, there was no way to prevent Mother Nature from delaying the project. Early on in the cutting work, a snow storm blew through Edgerton, leaving 2 feet of snow on the ground. The general contractor was able to plow snow away from the jobsite and give operators access to the footing, but this did impact progress for two days. Furthermore, working temperatures averaged 30 degrees Farenheit and affected both operators and equipment. Miller’s Pro-Cut fitted temperature controlled boxes to the frames, which housed power supplies for the hicycle wall saws and prevented them from freezing up. As always, the contractor provided hard hats, eye and ear protection, safety vests, steel-toed boots and all other items of PPE deemed necessary to protect workers. In addition, all employees were required to be eRail certified to work next to the rail line. The professionalism of the cutting team, coupled with some innovative designs, allowed the job to

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1,100 concrete sections were broken off, each weighing 4,200 pounds. be completed on time and within budget. This led to the contractor being awarded additional work, cutting the green concrete poured on the footing and performing joint widening and sealing tasks. This job is due to be completed later in 2013. “We were very satisfied how the project turned out, as were the guys at BNSF Railroad. For us, it was the perfect time of year to tackle a job like this because of our typical winter slow down,” said Miller. “The job was profitable and everyone was pleased with the experience, attitude and work ethic of our operators.” Thanks to the work of this CSDA member, the new intermodal facility at Edgerton remains on course to be fully operational in 2013. REVIEW AND COMMENT ON THIS ARTICLE AT:

Company Profile Located in Grandview, Missouri, Miller’s Pro-Cut, Inc. has been in business since 1994 and has been a CSDA member for 16 years. The company has 13 trucks, 16 employees and offers the services of flat sawing, core drilling, wall sawing, wire sawing, joint sealing, concrete removal and excavation. Miller’s Pro-Cut services Missouri, Kansas, Oklahoma and Arkansas.

Resources General Contractor: Burlington Northern Santa Fe (BNSF) Railway Sawing and Drilling Contractor: Miller’s Pro-Cut, Inc. Grandview, Missouri Phone: 816-322-7917 Email: Methods Used: Flat Sawing, Wall Sawing

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polished perspective

Densifiers Demystified Second-generation densifiers (right) penetrate more deeply than first-generation densifiers (left). The reaction is faster and the result is a harder, more uniform surface.


oncrete’s naturally porous composition benefits greatly from the application of densifiers—chemical solutions designed to improve concrete’s surface hardness, density and shine. When you apply a liquid densifier to concrete during coloring or polishing, the solution reacts with the free lime or calcium hydroxide present in the concrete to solidify it, making the concrete surface much less permeable and more resistant to stains. The most common uses: on hardtroweled industrial floors, polished concrete and decorative stained concrete.

Kinds of densifiers There are many kinds of densifiers, classified into two “generations.” Magnesium, potassium and sodium silicate are first-generation products and react with the calcium hydroxide in the concrete. The reaction starts immediately but continues slowly, due to the natural closeness of the pH of concrete. This application process is more caustic and labor intensive. Second-generation densifiers are lithium silicate–based densifiers with nano-sized technology and waterborne colloidal silica from

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nano-sized amorphous particles mechanically suspended in water. The lower pH of this colloid makes the reaction much faster and increases more reaction points with the free lime in the concrete. Plus, the suspension of the silicate particles allows the solution to penetrate much deeper before this reaction takes place.

H&C® Clear Liquid Hardener & Densifier H&C Clear Liquid Hardener & Densifier is an amorphous colloidal silica solution designed to both harden and densify concrete. This proprietary formulation penetrates and reacts with concrete faster than conventional systems and produces a harder, more uniform surface. What exactly makes this densifier unique? It allows the solution to penetrate deeper—0.188 to 0.25 of an inch—into the concrete before solidifying, creating better protection for the concrete. Its work time of 20 minutes saves product and costly labor time. H&C Clear Liquid Hardener & Densifier can be used on both interior and exterior concrete. When using on exterior concrete, be sure that the concrete

has not been previously sealed with a curing compound. Curing agents, clear sealers and any previous surface coating should be chemically or mechanically removed.

Polishing and application


On plain hard-troweled concrete (industrial floors). In all cases, the concrete needs to be clean; reasonably dry; and free from grease, oils and any other contaminants. It’s recommended that the floor be profiled with a 100and then 200-grit floor grinder. This opens the surface and allows the best penetration of the solution. Liberally apply the solution across 400 to 500 square feet of surface and agitate for about 15 to 20 minutes. Do not allow drying while penetration is taking place. After penetration, remove excess solution with water and a floor scrubber.


For polished concrete. Follow the same steps as above, but continue to grind and polish. After polishing, use H&C® Lithium Protective Finish to increase surface hardness and gloss.

3. When opting for color dye or stain. Preparation is the same as hard-troweled concrete: Add color dye or stain halfway through the grinding process. For instance, polish with 30, 50, 100, 200 and 400 grit, then add color and densifier. Continue polishing using resin bond diamonds 800, 1,500 and 3,000 grit. After polishing, use H&C Lithium Protective Finish to increase surface hardness and gloss. The protective finish should be burnished with a high-speed buffer to achieve maximum hardness and sheen.

Dependable business builder Densifying and polishing floors is a smooth process using H&C Clear Liquid Hardener & Densifier, with its deep, quick penetration and ease of application. Success is virtually guaranteed every time. Beautifully executed projects will lead to more satisfied customers, opportunities and profits.

Reprinted with permission from SherwinWilliams Concrete Coater™ Magazine.

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Polishers Have a Chance to Shine with CSDA


n its continued effort to serve an ever-changing industry, CSDA recently added a new membership category that will allow the association to cater to the needs of those who offer concrete polishing services. In addition, a new Polishing Committee has been formed within the association.

Many CSDA members have added services to expand their sawing and drilling operations into full service companies. Some have even created separate polishing divisions or businesses. Now, with this new member category, CSDA is well placed to represent those who offer concrete polishing as a primary or additional revenue stream. However, membership is not the only thing that CSDA offers contractors. As always, safety and training are a big part of what companies can gain through the association. The first ever CSDA Concrete Polishing class was held this past February at World of Concrete in Las Vegas and attracted a large number of participants. Here are dates and locations for the next classes:

November 7-8, 2013 January 22-23, 2014

Bakersfield, California Las Vegas, Nevada

The association has also produced documentation for concrete polishers. Specification CSDA-PC-113 Polishing Concrete and Best Practice CSDA-BP-008 Polished Concrete Floors form part of the CSDA Resource Guide and are available to download from the association’s Website. The CSDA Polishing Committee is planning to add more documents specific to this technique in the near future. For more information about the association’s polishing resources and training programs, call 727-577-5004 or visit

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Diamond Award winners (from left to right) Fabián Alcudia of Thayr sl, José Ramón Vilches of Talls, Forats i Ancoratges, sl and Toshio Kobayashi of Marutatsu Road Co., Ltd.

Diamond Award Winners Announced at bauma 2013


he International Association of Concrete Drillers and Sawers (IACDS) recently announced the winners of its international competition for excellence and innovation in the field of concrete cutting. The winners of the Diamond Award 2013 were presented with their awards during a ceremony at the bauma exhibition in Munich, Germany on April 19.

The Diamond Award was established in the year 2000 to recognize excellence in sawing and drilling projects from contractors around the globe. The competition is generally scheduled every two years and the award ceremonies are held at international industry events like bauma, BeBoSa and World of Concrete. Ever since the first competition opened for entries, the Diamond Award has attracted increased international participation and the quality of submissions has improved. Held every three years, bauma is the largest construction trade show in the world. The 2013 show attracted around 530,000 attendees from over 200 countries. Attendees visited more than 3,400 exhibit booths located in 570,000 square meters of indoor and outdoor space. It was a fitting venue to announce the winners of this year’s Diamond Award. The Gold award went to Talls, Forats i Ancoratges, sl of Spain. The contractor was tasked with creating 99 rectangular openings in the side of a concrete dock at the Port of Castellón, near Valencia. These 2.5-meter-

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wide, 5–meter-long and 0.5-meter-thick (8.2 x 16.4 x 1.6 feet) openings would help to reduce the impact of waves that crashed against the sides of the dock, making it easier for ships to dock in rough conditions. The contractor engineered custom frames that were attached to the dock and used to mount pulleys for wire saw runs. This innovative design allowed operators to stay safely above water while cutting. Thayr sl, also of Spain, was awarded with Silver. This was the company’s second Diamond Award after receiving second place in the 2011 competition. Similar to the Gold award winner, Thayr was contracted to perform the underwater wire sawing of four 5-meter by 4-meter (16.4-foot by 13.1-foot) bridge pillars at a reservoir. The octagonal-shaped pillars were temporarily built to facilitate the construction of a motorway bridge and required removal. In order to make diamond wire cuts to a depth of 20 meters (65.6 feet) below the surface of the water, the company designed a wire saw and pulley system to accommodate 16-meter-long (52.5-foot) lengths of wire and minimize the amount of time divers and operators had to be in the water. Cut sections were allowed to sink to the bed of the reservoir before being dragged to shore by 50-ton cranes. The Bronze award was given to Marutatsu Road Co., Ltd. of Japan for the contractor’s care and precision in removing an existing concrete

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slab and bridge supports for a new construction project. The work was done in an area with heavy traffic and lots of pedestrians, which meant any slurry or dust created had to be strictly controlled. The contractor modified a vacuum system to create an even stronger suction than would normally be required and added a custom engineered cooling system to the equipment. This allowed operators to use dry drilling cutting methods, collect all dust made during the work and keep the cutting tools from being damaged by excessive heat. Marutatsu Road Co.’s work included 1,130 meters (3,707.4 feet) of slab sawing, 169 meters (554.5 feet) of core drilling and 73 wire saw cuts of cross sections up to 0.35 square meters (3.8 square feet). Entries were judged on the degree of difficulty, planning, complexity, innovation and the quality of the work produced to ensure the project was successful. Following a detailed review of each entry, a judging panel consisting of representatives from several national sawing and drilling associations chose the winning projects. The 2013 awards included entries from the Czech Republic, Germany, Japan, Mexico, Spain, Sweden, the U.K. and the United States. Complete details of all winning entries can be found at




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IACDS President Jose Blanco (left) presents the Gold award to Spanish contractor José Ramón Vilches of Talls, Forats i Ancoratges. The next Diamond Award competition will be open for entries later this year and an award ceremony is scheduled for 2015. CSDA contractor members are encouraged to submit their most complex and innovative projects for consideration. The International Association of Concrete Drillers and Sawers (IACDS) is an international trade association of sawing and drilling associations from the concrete construction and renovation industry. Its mission is to provide an international union and cooperation of trade associations to support and promote professional development of professional sawing and drilling contractors and their methods. This umbrella organization of sawing and drilling associations was formed in 1995 under the leadership of the German, Swiss and U.S. associations. Today, ten national associations are members of IACDS: Australia, France, Germany, Japan, Russia, Spain, Sweden, Switzerland, United Kingdom and the United States. For more information, visit

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Tuttle Creek Spillway Bridge GPR Provides Army Corps of Engineers with a Vision

The 1,000-foot-long Tuttle Creek Spillway Bridge was in need of repair.

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n an effort to determine the extent of deterioration, corrosion and delamination within the deck of a 1,000-foot-long bridge in Manhattan, Kansas, the Kansas City Division of the U.S. Army Corps of Engineers required the services of a specialist imaging contractor with Ground Penetrating Radar (GPR) to collect crucial data. This data would be the basis of the Corps’ bridge repair contract documentation, so it had to be precise.


The bridge runs over the Tuttle Creek Dam on Highway 13, just north of Manhattan. Opened in the early 1960s, the dam was constructed to prevent damage to the city during severe weather and flooding of the Big Blue River. The value of the dam was proven during the Great Flood of 1993, when floodwaters reached up to 63 feet above normal levels. The dam reached capacity in July 1993 and necessitated the first release of the spillway. All 18 gates on the spillway were raised 4 feet during the peak of the flood, producing a flow rate of 60,000 cubic feet per second. With the bridge and spillway reaching 50 years old, the Army Corps of Engineers wanted to make sure the structures were sound and identify any areas where repairs were necessary.

This chart shows the data plot of the reinforcing steel in the concrete approaches of the bridge. This reinforcing steel set shows a uniform distribution of amplitudes within the concrete approaches, giving strong evidence that there is little deterioration occurring in the approaches.

The GPR data was compiled to produced an overlay that showed the levels of deterioration along the bridge.

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Imaging Insight from CSDA Many CSDA members have embraced technological advancements in the industry and added GPR to expand their sawing and drilling operations into full service companies. Some have even created separate divisions or businesses. Now, with a new member category for imaging contractors, the association is well placed to represent those who offer GPR as a primary or additional revenue stream. In addition, the CSDA Imaging Committee was formed this past February, prior to the association’s Annual Convention and Tech Fair. Here are the details: Committee Chairman Mark DeSchepper (Construction Solutions, Paola, KS) Vice Chair Emily Hammer (Hard Rock Technologies, Chicago, IL) Purpose To promote the use of imaging technologies, primarily focusing on GPR. Goals •

Address industry needs for training and certification related to imaging and GPR service providers.

Develop industry Specifications and Best Practices for imaging contractors and specifiers.

Create materials and set a syllabus for a CSDA imaging training class.

Collaborate with the American Society of Non-Destructive Testing (ASNT) to develop the first set of industryrecognized certifications for GPR operators.

Upcoming Meetings June 6, 2013 Westlake Village, California September 5, 2013 Annapolis, Maryland December 5, 2013 Park City, Utah For more information Call the CSDA at 727-577-5004 email or

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Two 3-inch core samples were taken from different areas of the bridge to validate the findings of the GPR scans. Imaging with GPR was specified because this technology had the ability to scan the entire deck with minimum disruption to traffic flow. This method only required traffic to be restricted to one lane for less than two hours. GPR was the only non-destructive test (NDT) that could produce a reading on every piece of rebar within the deck in such a short time frame. Other alternative methods included visual inspection, chain dragging, hammer sounding, half cell potential and chloride testing. Half cell potential and chloride testing required destructive testing to occur to physically expose the insides of the deck. In addition, these readings

would only quantify a specific area and could not be applied as a general assessment of the entire deck. Visual inspection could only identify issues on the surface, not what was within the deck. Chain dragging and hammer sounding are methods used to hear differences in the concrete. In these cases, there is no quantitative or qualitative data and these methods are highly subjective tests. For all of these reasons, GPR imaging was the clear choice. CSDA member Construction Solutions, LLC of Paola, Kansas, an engineer consulting and GPR imaging company, was contracted to scan the entire deck to gather the necessary data and

SHIBUYA process the information on a computer. The data would be analyzed and converted to show the depth of cover of the rebar and the amplitude reflection. This would locate any weak signal returns, which often indicates corrosion, deterioration and/or delamination within concrete buildings and strucutres. A third party traffic control company was tasked with setting up traffic control in accordance with the Manual on Uniform Traffic Control Devices prior to the imaging contractor’s arrival. Once traffic control was in place, Construction Solutions proceeded to scan the length of the bridge. The imaging operator moved back and forth across the length of the bridge at 2-foot intervals, working from the center line out in the closed 13-foot-wide lane. The scanning crew employed a SIR-3000 unit from CSDA affiliate member Geophysical Survey Systems, Inc. (GSSI) complete with a 1,600 Mhz antenna. The unit’s transmitter and receiver were set in a fixed geometry and moved over the concrete surface to detect reflections from subsurface features. Scan files were saved and documented so that each one could be “rebuilt” and processed in the computer later. Upon completion of the first lane, which took less than one hour to scan, traffic control was switched to allow access to the other lane and the process was repeated. The imaging contractor made a total of 13 scans measuring 1,000 feet long, completing the work in under two hours. All the data saved and documented during the scans was used to compile a statistical plot of every piece of rebar per scan area. The data count accumulated approximately 25,000 readings of rebar to then measure the depths and amplitudes of the bar. Through a mapping software program, this data was used to create a pseudo color map overlay showing areas of the weakest and strongest reflections. This map overlay was reviewed and two specific areas were chosen to validate the GPR findings. Construction Solutions set up a Hilti DD100 core drill rig to cut and remove samples of the aggregate. Equipped with the appropriate PPE, an operator drilled to a depth of 8 inches with a 3-inch-diameter core bit supplied by Husqvarna. One core was taken at a location where the concrete was deemed to be in good condition, with another taken from a location with concrete in poor condition. An inspection of the core samples quickly confirmed that the GPR data was accurate and reliable. As the bridge was approximately 1,000 feet long and had two lanes measuring 13 feet wide,

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The condition of the aggregate in the cores reflected the results of the scanning images. the imaging operator covered a total of 13,000 feet to complete the scanning work. Construction Solutions recorded 13 images every 2 feet and the data collected totaled 500 MB. The job was completed as described and on budget. “We were selected for the project based on prior success using GPR with the Corps of Engineers on various projects,” said Mark DeSchepper, operations manager and GPR survey specialist at Construction Solutions. “Our experience in successfully using GPR to locate corrosion, deterioration and delaminations within concrete has been long documented, and many customers have referred us to others based on our capabilities.” The use of GPR technology is growing within the concrete sawing and drilling industry, with many contractors realizing the benefits of adding this as a service. The ability to detect hidden objects in reinforced concrete quickly and without intrusive methods saves time and resources. The imaging work completed by Construction Solutions assisted the U.S. Army Corps of Engineers in producing bid documentation and provided contractors with a truly accurate representation of the bridge construction.

Company Profile Construction Solutions, LLC is based in Paola, Kansas. The company has been in business since 1999 and is a 12-year member of CSDA. The company is said to be one of the first GPR-specific companies established in the U.S. and has collaborated with several CSDA cutting contractors.

Resources General Contractor: Kansas City Division, U.S. Army Corps of Engineers Imaging Contractor: Construction Solutions, LLC Paola, Kansas Phone: 913-879-2200 Email: Methods Used: GPR Imaging


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CrossFit and the Paleo Diet By Erin O’Brien


nless you have been living in a cave, you have probably heard about one of the latest fitness trends to sweep the nation, CrossFit, or read about the Paleo Diet, also known as the “caveman diet.” While not officially associated with one another, CrossFit and the Paleo Diet are usually mentioned together and share many of the same principles. As more and more research, literature and personal testimonials come out in support of the CrossFit program and the Paleo Diet, company owners, employees and operators alike would benefit by learning about and engaging in one or both. CrossFit is many things, but mostly it is a fitness regimen that specializes in having no specialty. CrossFit is a program that encourages the sport of fitness and the belief that to truly be physically elite, a person is not only strong, fast, powerful, flexible or agile, but a combination of all of these qualities. This prepares you to be able to excel at any physical demand placed upon your body, whether it is running a road race, moving a heavy piece of furniture, saving someone from drowning or using a handheld concrete chain saw to make a precise cut in a wall. Many people think a successful session at the gym includes 45 minutes on an elliptical machine, bench pressing 200 pounds or performing three sets of 10 repetitions on the leg extension machine. However, when will you ever have to replicate any of those exercises in your daily life? Wouldn’t it make sense to include movements in your exercise program that can easily adapt to your everyday life? That is exactly what the CrossFit program teaches. The definition of CrossFit is constantly varied functional movements performed at a relatively high intensity. Think box jumps, deadlifts and sprints instead of 20 minutes on the treadmill at the same speed, calf raises and bicep curls. Consider it this way: if while camping in the woods, you find yourself uncomfortably close to a bear and need to get away quickly, would you think “well, thank goodness I did my bicep curls

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this morning?” More than likely, what is going to get you away from that bear safely are your speed, endurance and agility. CrossFit is not easy. The WODs (workout of the day) are constantly changing, and help prepare your body for any unexpected challenge that may come your way. If you are not exhausted, out of breath and making “sweat angels” on the box floor when you are done, then you did not push yourself hard enough (CrossFit gyms are called “boxes”). The good news is that there will be several other CrossFitters making sweat angels next to you, and these people will have pushed you to do your best while cursing the instructor and the WOD just as much as you were. But it will be worth it. One of the best aspects about CrossFit is that the WODs are completely scalable— meaning anyone can do it. Anyone from a 35-year-old former college football player who has spent a little too much time on the couch to the 80-year old grandfather recovering from a hip replacement or a 17-year old high school senior looking for that extra edge to help his college basketball prospects, can do a CrossFit WOD. Weights, repetitions,

distances and movements can be scaled up or down to accommodate people of all ages and fitness levels. Most people who start CrossFit begin to see results in less than two months. And because the workouts are always changing and the athletes are constantly pushing themselves to improve, your results will constantly improve. CrossFit is a lifestyle, not just a workout. However, CrossFit may only be part of the equation. The foundation of CrossFit and a healthy lifestyle is nutrition. While there is no one perfect diet for everyone, a diet that many elite and recreational CrossFitters have embraced is called the Paleo Diet. First reported by Dr. Loren Cordain in his book The Paleo Diet, and later popularized by Robb Wolf and his book The Paleo Solution, the recommendation is to eat a diet similar to that of our ancestors—cavemen in the Paleolithic Era. The theory behind it states that our bodies have not evolved at the same pace technology has. So, while our ancestors thrived on a “hunter/gatherer” diet of lean meats, vegetables, fruits, nuts and seeds, our current diet heavy in processed foods, grains and sugar is a poor choice to adequately fuel our bodies and may have led to many current health problems such as diabetes, osteoarthritis, autoimmune diseases and cancer.

You wouldn’t eat poison ivy, because its leaves are poisonous to our bodies. This is the way the poison ivy plant protects itself. However, some researchers believe that grains, such as wheat, rice and corn, have similar defense mechanisms that affect our bodies internally, after we have consumed the grain. This can cause inflammation within our body that can lead to weight gain, gluten intolerance, digestive tract disorders, respiratory disease and other auto-immune diseases. While some people may be more affected than others, we all are affected in some way. This same inflammation can also be caused by sugar, chemicals present in processed foods and artificial ingredients. By eliminating these foods and chemicals from our bodies, we encourage a more natural functioning of our cells as well as increased health and athletic and mental performance. Eating a Paleo diet is not easy. It takes advanced planning, preparation and a great deal of willpower. Many of its followers swear by its results, as they have overcome diseases such as Celiac disease, arthritis, asthma, cardiovascular disease, diabetes and even allergies. Most Paleo diet followers abide by the 80-20 rule— 100% Paleo, 80% of the time. If nothing else, just reducing the amount of processed food, sugar and grains in your diet will make a big difference in the way you look and feel. A diet high in lean meat and vegetables is the perfect fuel to help you push your way through your first CrossFit WOD. If traditional diets and exercise programs have not produced the results you want, CrossFit and the Paleo diet may work for you. Not only will you make new friends and have found an exciting new fitness regimen, but you may also find that you can lift that wall saw, guide that flat saw or planetary grinder, or climb a flight of stairs with more ease than before.

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©2013. All rights reserved

of Science degree in Athletic Training from Ohio University and her Master of Science degree in Applied Physiology and Kinesiology from the University of Florida. She is also a Certified Level 1 CrossFit Instructor and member of CrossFit9 in St. Petersburg, FL. She competed in the CrossFit Open for the first time this year and was proud to complete all five rounds. She is a regular contributor to Concrete Openings magazine. She can be reached at or 727-577-5002.

CrossFit and Paleo Diet Resources CrossFit Main Site – Learn more about CrossFit and find a box near you The Paleo Diet – Dr. Loren Cordain The Paleo Solution – Robb Wolf Check out the 2013 Reebok CrossFit Games, July 22-28, televised on ESPN

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Husqvarna DM 340 drill motor Ready for action.

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When operators need a machine to handle heavy-duty core drilling jobs, the Husqvarna DM 340 drill motor is the right tool. It was designed to provide optimal performance when drilling with 2" to 16" bits. The gearbox is water-cooled for reduced wear, and the three speeds make it easy to set the optimum drilling speed. The Elgard™ feature indicates via an LED when the machine is overloading. This prevents motor damage and increases product life. It can be used with the AD 10 automatic drilling system to increase production and bit life. The DM 340 drill motor is powerful and smart.

HUSQVARNA CONSTRUCTION PRODUCTS 17400 West 119th Street • Olathe, Kansas 66061 • T 800-288-5040 • F 800-825-0028 • 2077 Bond Street • North Bay, Ontario P1B 8J8 • T 800-461-9589 • F 800-825-0028 • Copyright © 2013 Husqvarna AB (publ.). All rights reserved. Husqvarna is a registered trademark of Husqvarna AB (publ.).

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Tech Talk Tech Talk is a regular feature of Concrete Openings magazine, focusing on equipment, maintenance and technical issues of interest to concrete cutting contractors. Readers wishing to have a particular subject addressed can call or email CSDA with their suggestions at 727-577-5004 or

History and Improvements of Diamond Blade Manufacturing By Chris Priest


he history of the diamond blade manufacturing process over the last 83 years , and the vast improvements made to the process during this time, include constant change. As technology in the concrete sawing and drilling industry continues to move at break-neck speed, it is always worth remembering just how diamond blade manufacturing began and how it has developed to what it is today. Great strides were taken to advance this fledgling industry from the 1930s to the 1960s, and the decades that have followed represent a period of healthy growth for the diamond tooling market. Indeed, many companies formed during 1960s, 70’s and 80’s are now household names in the industry. New ideas and approaches have been realized by numerous innovators, including metallurgists, engineers, salesmen and plant employees. All have helped to develop the diamond blade manufacturing process.

Improvements in the Diamond Blade Manufacturing Process These improvements can be broken down into three main categories: steel cores, synthetic diamonds and metallurgy.

Steel Cores Steel Proprietary steel is used to manufacture cores and is optimized to yield a balance of high strength and ductility. This combination ensures there is ample stiffness for a wide variety of cutting applications, yet the tempered core gives resilience for stress relief and a reduction in cyclic fatigue. In addition, the carbon content has been optimized for laser welding. For concrete cutting applications, the optimal core surface hardness is 36–40 on the Rockwell scale (HRC). Within this range, the steel has excellent tensile strength and elongation that allows it to stretch before it breaks. Laser Cutting vs. Punching Laser cutting produces a smooth stressreduced gullet. This helps minimize gullet cracking by normalizing peaks and valleys in the surface that cause stress concentrations.

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Synthetic diamonds are now commonplace. Punching cores creates a tearing at the edges of the core that creates stress concentrations, initiating core cracks. Another advantage of laser cutting is the ability to cut any design; slot shapes, notches, drive pinholes, keyways or harmonic dampeners. New anchor slot designs further reduce the instance of cracking by distributing the stress over the entire base of the gullet. Heat Treating Quenching and tempering methods process a core to be flattened, stress relieved and achieve a consistent hardness. Even hardness, within 0.5 HRC over the core, is critical when achieving flatness. The flatness and consistent hardness deliver a core that is easier to tension and flatten, ultimately giving the end user a blade that demonstrates better performance and a longer life. Surface Grinding The current generation of fully automated rotary surface grinders are able to produce extremely tight tolerances and help ensure parallelism. In addition, these grinders put significantly less heat into the cores, keeping them flatter with less stress.

Leveling and Tension Hammering causes localized stresses in the core by cold working the metal into shape and building stress to counteract high or low spots in the core. This process is not ideal since it can be undone during cutting operations. When there is an increase in temperature, the steel begins to revert back to its prehammered/tensioned state. This can cause the core to become unstable and unsafe, leading to reduced blade life or even premature failure. Leveling reduces and normalizes the stress in the core by deforming the steel past the plastic stage. Leveling virtually eliminates the need for hammering. Dampening Harmonic dampeners reduce noise and vibration of a core. When properly sized and located, a shift in the natural frequency of the core can be achieved. Shifting the natural frequency can render a safer operating speed range and can also help further reduce core cracking. Minimizing vibration allows the power of the tool to be better concentrated into the cut, leading to increases in speed and cutting performance. Note: Despite these advancements, not all cores are processed using the techniques mentioned above, or to the same standard. Contractors can contact manufacturers and inquire about the diamond blade manufacturing processes used in the company’s range of tools for clarification.

synthetic Diamond Man-made diamonds are formed in a similar process to the one used by Mother Nature, that being the subjection of carbon to high temperatures and ultra-high pressures. Typically, when at these temperatures and pressures, carbon atoms are “squeezed” closely together to cause atomic bonding. The atoms are then locked into the diamond crystal structure. The transformation from carbon to diamond occurs within a molten metal matrix of either cobalt or iron-nickel alloy. Diamonds manufactured by the Cobalt Matrix Method generally have inclusions called

A Brief History of Diamond Blade Manufacturing The period between 1930s and 1960s was a golden age for the diamond blade manufacturing industry. Here are some highlights: 1930 Norton develops a resin bond diamond grinding wheel. 1935-1939 Richard Felker develops the first diamond blade. Felker uses rudimentary tools to strike an edge on a steel core to mix powders, and uses natural diamonds and olive oil to cut natural and man-made stone. 1939 De Beers exhibits a variety of diamond tools at New York World’s Fair. 1941-1942 Felker is hired by the Deptartment of Defense to develop diamond blades for cutting optical grade quartz for crystal frequency tuning controls. 1941-1945 Les Kuzmick and Emilio Valenti design some of the first manufacturing equipment for Felker. 1944 George and Frank Christensen of Christensen Diamond Products in Salt Lake City, Utah produce some of the first diamond core bits. 1946 Industrial Diamond Association (IDA) of America is formed. 1949-1950 Felker manufactured the first blades on a production basis for industrial and lapidary use. 1950-1953 Clipper Manufacturing and MK Diamond form two of the first companies to sell diamond blades and core bits in the U.S. 1953 Bob Evans leaves Clipper and starts the manufacturing firm Target, later working with Felker and Vanguard to develop equipment and diamond blades for mass consumption. Gene Sanders starts Sanders Saws, manufacturing blades for the refractory/masonry industry.

dendrites that resemble tree branches. These inclusions have an effect on crystal “friability,” or resistance to fracture. Friability is determined by subjecting the crystals to a crushing action using standard loads for standard time periods, then measuring the weight loss. Diamonds manufactured by the Iron-Nickel Matrix Method have inclusions, usually not the dendritic variety, but which also effect friability. Over the years, diamond makers have been working on ways to increase the yield of high purity particles in every batch of diamond produced, and have been quite successful in doing so. This has given diamond blade manufacturers a further option when there is a need to alter blade performance. Another important development in manufactured diamond technology is the recent progress being made in coated diamonds. The purpose of using coated diamonds is to improve diamond retention in the metal bonds so that diamonds are not lost before they are used up. In the past, single layer coatings on diamonds were not effective because they were incompatible with either the diamond particles or with the metal bond. Newer coatings are now available that are multilayered, having one material in contact with the diamond particles and another material in contact with the metal bond. These new coatings are being used successfully in many applications.

Metallurgy (Powders) Metal powder has played a key role in defining the growth and expansion of the diamond saw blade and drilling industry for

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A team from General Electric (GE) consisting of Francis Bundy, Herbert Strong, Tracy Hall, Robert Wentorf, Anthony Nerad and James Cheny synthisize diamond on December 16th. 1956 GE (followed immediately by De Beers) develops the first man-made synthetic diamonds. 1956 Federal-Aid Highway Act initiates construction of the Interstate System. Concut develops the bump cutter for bump grinding in Califorina. 1957 GE introduces man-made diamonds as a registered trade mark to the grinding wheel industry. 1960-1970 Musto Industries (MK Diamond) is formed under the direction of Paul Mitchell. Emilio Valenti leaves Felker and develops the notched and segmented synthetic diamond blades. Under the direction of Webb Morrow, Star Diamond duplicates the MK process and improves the notched blade manufacturing process. MK is purchased by Robert Delahaut. Richard Rice and Bob Messner continue to produce blades for the lapidary market even as the industry was on the decline. 1960- The notched rim blade process becomes less popular during the 1980s and is superseded by processes used to present day.

over 50 years. During the early days of metal powder use, all impregnated and surface set bits and blades were manufactured by the infiltrated method. The diamonds used in the impregnated system were generally scrap natural diamonds from used mining bits that were electrolytic. They were cut out and checked, and the surface set bits used virgin natural diamonds. Basically, there has been very little change to the metal powders used today. However, there has been tremendous improvement in the way these powders are processed. These improvements include uniform grain sizes and, in some cases, irregular particle shapes. Several manufacturers supply pre-alloyed powders that help with diamond retention, and when used in drilling applications offer a smooth cutting quality. These powders are commonly used in cold and hot press systems. Even with all these improvements, oxidization is still a major cause of powder failure. Powder and matrices are stored in a climate controlled room with a dehumidifier and descant bags, and are mixed in small batches. Generally, the modern hot press systems used today are atmosphere controlled, which helps preserve the graphite. Cobalt, copper, chromium, nickel, bronze, boron, iron, tungsten, titanium and many more are all powders used to make up matrices in a variety of combinations. Tremendous growth in this part of the industry, particularly in global markets like Asia, has seen the price of these powders increase exponentially. However,

the advancements of new powder processes, cold and hot pressing equipment and finishing machinery like the laser has allowed manufacturers to remain competitive. Diamond blade manufacturing has changed a great deal in the past 83 years. In 1930, the preferred method of making diamond blades was to “peen in” and insert natural diamonds into brass or copper. Today, the diamond blade business continues to evolve and manufacturing techniques must continue to adjust to keep pace with the demands of the marketplace. The industry is developing bigger, better and stronger blades for new equipment. Thanks to the advancements mentioned above, manufacturers not only offer bigger or stronger blades, but blades that are safer, less expensive and specifically tailored for the different types of aggregates today’s concrete cutters work with. Special thanks go to: Kevin Baron (Western Saw), Joe Cammerota (Multiquip/ Sanders), Steve Garrison (Hilti), Romey Messina (Multiquip/Sanders), Keith Reckling (National Research) and Lands Super Abrasives for their input to this article. Chris Priest is a regional sales manager for Multiquip/Sanders Blades based in Honey Brook, Pennsylvania. He has served on the CSDA Board of Directors and the association’s Election, Marketing and Membership committees. Chris can be reached at 310-850-5483 or

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The Lewis County Civil War Monument stands 30-feet-tall.

A Job of

Stature Civil War Monument Restored by CSDA Members


n another successful collaborative effort, two CSDA Member companies cut, removed and restored a 30-foot-tall, 129-year-old zinc monument in Lowville, New York. The age of the monument, coupled with the poor condition of the zinc, was reason enough to have the monument restored. However, it was the introduction of another material—concrete—that had caused this work to be scheduled sooner than originally planned.

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Statues, grave markers and monuments made of cast zinc are scattered throughout city parks and cemeteries in the United States. In the past, zinc metal was referred to as “white bronze” and was a cheap alternative to real bronze. Many zinc-made plaques, ornaments and capitals commemorate those fallen in war, particularly the American Civil War, as was the case for the monument in Lowville. The Lewis County Civil War Monument was built in 1883. By 1980, the hollow base of the 7-foot-wide, 30-foot-tall monument was caving in and the structure was starting to lean. The problem was deemed “fixed” in 1998, when the monument was filled with concrete and reinforced with steel. It was just two years later that the consequences of this action became apparent. Inevitably, water began to enter cracks in the monument. The water became trapped between the concrete and the inner walls of the zinc, expanding when it reached freezing temperatures. This had led to sections of the monument bulging and bursting apart.



Wire sawing techniques were used to cut the concrete-filled monument into four sections. Following several years of consultation and inspections, the village of Lowville issued a Request for Quotation in 2011 and the contract was awarded to CSDA affiliate member McKay Lodge Conservation Laboratory, Inc. of Oberlin, Ohio. Funding for the job was provided through the donations of the citizens of the village and local organizations within the county. In addition, the New York State Office of Parks, Recreation & Historic Preservation provided a grant for the work. While the art and historic preservationists at McKay Lodge were responsible for the restoration of the monument, the company does not cut concrete. Therefore, concrete cutting specialist MMG Industrial of Buffalo, New York was contracted to help with the cutting and removal aspects of the job. McKay Lodge found MMG by searching the CSDA Membership Directory for a local contractor. “I regularly read industry magazines like Concrete Openings because concrete is often a mighty tough obstacle blocking the path of our work. I need to keep up with what services cutting professionals offer that could assist us” says Robert Lodge, president of McKay Lodge. “I contacted Matt Gehman at MMG Industrial and his company had the ideal solution for this project.” The monument was well bonded to a steel reinforced, full pour of concrete, from the base line all the way up to the foot of the soldier— Zinc castings were separated so that concrete could be removed from the inside of the structure.

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This is not the first time that McKay Lodge Conservation Laboratory has worked with a CSDA contractor. Regular readers of Concrete Openings may remember the company joining forces with Matcon Diamond, Inc. to restore a famous mural at a Pittsburgh subway station (June 2010). Visit and click on “Archives” to find the issue and story.

For larger sections, core drills created access holes for diamond wire runs. a solid 23-foot-tall tower of steel reinforced concrete. It was clear that the monument would need to be sliced horizontally to not only make weight-manageable portions, but to create opportunities for coring out the concrete. “McKay Lodge elected to utilize our services due to our experience in making precision cuts on metal components with our diamond wire system,” said Matt Gehman, president of MMG. “The zinc casting (shell) was very thin and the segments needed to be parted in a controlled manner without sacrificing any of it. Additionally, all reinforced concrete needed to be removed in a precise manner once the segments were separated and this needed to be done in a facility with adequate crane tonnage—the largest part weighed over 14,000 pounds.” MMG mobilized a three-man cutting crew with equipment to work dawn-to-dusk and complete the work within a three-day window. Operators used a Hilti DS WS15 wire saw with a 100-foot length of diamond wire to make the cuts. A 60-ton crane was used to sling sections of the monument while being cut with diamond wire, and to lower each section onto a truck for transport to the contractor’s facility. Once there, operators would use other cutting and coring techniques to separate the concrete from the zinc monument. However, the crane was not allowed on the park grounds due to its weight, so the crane’s boom was extended to the work area from the street.

The dismantling of the monument required three separate horizontal cuts that would split it into four pieces, starting from the top down. The largest wire saw cut measured 49 square feet. It was important that the cuts were as controlled as possible to eliminate damage to the soft and brittle zinc castings, so correct pulley setups, cutting speed and wire tension were crucial. The contractor fabricated a “soft mount” guide system for controlling the cut path of the wire, which included rubber bumpers and clamping mechanisms, and cuts at height were set up using man lifts. The cutting team from MMG took three days to complete the cutting and removal of the four monument sections that totalled over 20,000 pounds in weight. The cuts each took an average of two to three hours to complete. Upon arrival at the cutting contractor’s facility, the sections were positioned so that the concrete filling could be removed and the remaining zinc castings be transported to McKay Lodge for restoration. To protect the castings from the elements, MMG put up a floor-to-ceiling membrane around the work area with a rooftop ventilator. Dust masks and full face shields were also provided. Hilti DD 350 core drills were used to create four 2-inch-diameter wire access holes up to 10 feet deep in the corner of each of the poured segments. The holes needed to be within 2 inches of the casting wall and on an angle, because the width of the monument walls decreased from the base to the top. The wire saw was set up to cut

Pull cuts were made parallel to the walls of the monument to create trapezoidal concrete sections for removal.

Cut sections were lifted out, leaving a 2-inch-thick layer of concrete to be removed by chisels.

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The restored monument has now been returned to the people of Lowsville. between the access holes, making four cuts per section averaging one to two hours per cut. Trapezoidal-shaped concrete cores were extracted by crane, before pneumatic hand chisels were used to remove the remaining 2-inch-thick layer of concrete that was bonded to the inner monument walls. The zinc casting walls varied in thickness from 0.375 inches to almost paper-thin, so operators proceeded with caution. An ICS 695F4 gas powered chain saw and a Reimann & Georger Corp. C150 hydraulic chain saw were used for the bulk removal of concrete from the sections cut from the top of the monument. For these sections, a handheld cutting wheel split the casting walls at the corner joins, as little concrete had bonded to the inner walls of these sections. The amount of concrete removed exceeded 20,000 pounds and took between four and five weeks to cut and break. With all of the concrete removed, the zinc castings were transported to McKay Lodge for restoration. The company specializes in unique work with zinc monuments. The old, distorted soft zinc castings were straightened and the cuts and numerous cracks were welded and chased. Losses were molded and cast in-house with zinc and welded into place. In November, 2012, after almost a year of restoration, the Lewis County Civil War Monument was returned to the village of Lowville. The precise cutting work and careful restoration of these two CSDA members will help the monument stand for many years to come. “This was a very satisfying project for our company. A significant portion of this project was financed through the fund-raising efforts of the local veterans, so we wanted to make sure that their hard work and trust was repaid. Especially gratifying, is knowing that this monument will stand another 100-plus years and be testament to the men who made this country great,� concluded Gehman. REVIEW AND COMMENT ON THIS ARTICLE AT:

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Company Profile MMG Industrial has been a CSDA member since 2009 and was established in 1998. The company is based in Buffalo, New York, has two trucks, 10 operators and service all mainland states of the U.S. MMG Industrial offers the services of flat sawing, core drilling, wall sawing and wire sawing and specializes in the cutting of metals. Based in Oberlin, Ohio, McKay Lodge Conservation Laboratory has been in business since 1989 and has been a CSDA member for two years. The company has 10 employees and is principally engaged in the preservation of sculpture, monuments, fountains and architectural elements, mostly within multi-year national GSA contracts.

Resources General Contractor: McKay Lodge Conservation Laboratory Oberlin, Ohio Phone: 440-774-4215 Email: Sawing and Drilling Contractor: MMG Industrial Buffalo, New York Phone: 716-348-3434 Email: Methods Used: Wire Sawing, Core Drilling, Chain Sawing

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The Business of Business

How to Close the Sale in the Google Era By Marc Wayshak


n today’s technology-driven world, information is cheap. The Internet has changed everything for prospects. No longer do they need the big sales pitch explaining all of the features and benefits of a product. There is a website for that—and probably many of them. Prospects are savvier than ever now that they are armed with so much information. They are also more guarded because of the way sales people have been portrayed over the past 50 years in the media. Finally, prospects are also busier than ever before—the average corporate employee has well over a full week of work piled up on their desk right now. Times are different in the 21st century—sales people and business owners must adapt or fail. A salesperson’s job now entails helping prospects identify whether they are the right fit for a particular product or service. Most importantly, the ability to close a sale in today’s economy depends more on one’s mindset than his or her specific closing technique. Bill was the sales manager at a mid-sized construction firm that struggled with sales despite having an intelligent and charming sales team. The team had been trained by an old-school sales trainer to smile a lot, turn on the charm and give rehearsed pitches based on some preliminary probing questions. The result was that they were simply not closing deals— and the deals they did close were won through very competitive pricing. Bill didn’t understand what the problem was. His sales people would often get positive feedback from prospects about how they were treated, and people always mentioned how his sales team had “the gift of gab.” By giving rehearsed sales pitches based on little information, being insincerely friendly and trying to persuade prospects rather than understand them, Bill’s sales people were acting like all of the other sales people the prospects had ever met. It is not that this technique is inherently wrong; it is just extremely common. When the sales people were perceived to be like every other sales person out there, they instantly appeared less engaging to their prospects.

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The New Mindset In order to close sales in today’s economy, sales people must be different from the rest of the pack. By being authentic and aiming to understand your prospects, you come off as unique from the majority of sales people out there. Think of yourself as a doctor, rather than a salesperson. When you go to the doctor with a problem in your elbow, the doctor does not say, “Well, I have a solution for YOU! You are simply going to LOVE this fantastic arthroscopic surgery that we can offer. It is so great!” That would be ridiculous and insincere, but that is what most salespeople are doing right now.

A good doctor asks you where it hurts, what it feels like and what you’ve been doing that might have caused the pain. Mirror the doctor-patient dynamic in your selling life. Replace all of that enthusiasm with a genuine desire to understand where prospects hurt and determine whether you can help them. People open up to those that they perceive as a real person that understands them. A connection with a prospect is ultimately created when they feel that you seek to understand their situation. That is why salespeople must change their goal when with prospects. The entire focus of sales meetings must be on the prospect and his

situation. This is achieved when you ask questions that begin to dig into where the prospect hurts about his current situation. For example, rather than begin a sales meeting by talking about the benefits of your product, begin with one of these questions: “Tell me about your challenges with regards to [your category of service or product]” “Give me an example of that challenge” “Tell me a little more about [prospect’s challenge]” It goes back to the mindset of a doctor. A good doctor will thoroughly examine a patient before telling the patient if there is a solution. Only poor doctors will offer solutions without identifying the real problem. Salespeople must have this same mindset with their prospects. Realistically, about 50% of your prospects will not be a good fit for buying from you. This could be for a wide range of reasons, whether it be that they do not need your product to they do not have any money to hire your services. Whatever the reason, it is your job to discover as quickly as possible whether they are or are not a fit for you and your company’s product or service by using your doctor mindset. As life has become more complicated, many salespeople have sought more complicated solutions to their selling problems. However, the solution is not complicated. In fact, it is as simple as a small shift in mindset. Vince Lombardi once said, “Some people try to find things in this game that don’t exist but football is only two things—blocking and tackling.” The same is true for selling. By changing your mindset to think more like a doctor, rather than like the traditional salesperson, you immediately move into an elite group of salespeople that stand out from the pack. This is the difference required to close the sale in the new economy.

Marc Wayshak is a sales coach and the author

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Presenting Yourself Professionally: In the Flesh, On the Podium and On the Web By Sue Ann Kern


irst impressions are made within those initial few seconds that you meet someone new. You know that feeling when you meet someone for the first time? You may feel comfortable, impressed, disappointed or distrustful. Your first impression of an individual is a critical building block in the growth of a relationship, whether professional or social, and may very well be the reason why you decide to pursue a relationship, or why not. Negative first impressions can be nearly impossible to overcome. Suppose you blew your first presentation to your new boss. Even if you have stellar performances after that, your boss may still have the image of your first disastrous appearance. It may take far more effort to make your boss forget that image than to ruin a positive first impression. Think about that—if you start off on the wrong foot, it is difficult to recover. People will be harder to impress. However, if you start off on the right foot then have a failure down the road, people are more likely to give you the benefit of the doubt in the future because they know what you are capable of. First impressions are not just made in person. Consider a resume that has a misspelled word, or a post on Facebook that is inappropriate. Consider the glaring “Under Construction” message when you go to a website. Now consider a resume that is impeccably worded and formatted. Consider a wellthought-out and professional social media presence. Consider a LinkedIn profile and website that effectively present your expertise to the world. Presenting yourself in person, on the podium and on the web are all opportunities to create positive first impressions and help you grow professionally. No matter how afraid you are or how shy you think you are, you can do this. Just follow some simple tips and tactics.

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In the Flesh What are some of the physical things about you that will cause a person to form a first impression? Appearance, body language and attitude all are key factors involved in providing a first impression. Your attire will be dictated by the situation, location and your audience. Know your audience. Is a suit appropriate? Is it casual Friday every day? Professional dress in New York is different than professional dress in LA or Miami. In a professional situation, err on the side of caution and dress more conservatively. One piece of advice you may have already heard: dress the way the individual in the position you aspire to dresses. Body language is incredibly important and often overlooked. It can be a very effective communication tool, but it can also convey much more than you really want to share. A subtle hand gesture or change in posture can alter the message you are giving, and someone’s first impression of you.

Communication is 55% non-verbal, 38% voice inflection and only 7% words. Think about a written message, text or email, and how often we misinterpret the meaning because all we have to work with are words. There is no voice inflection and no body language to help those words convey the message completely. Often this can backfire. Think about these gestures that you may or may not realize you use: The head tilt – when you tilt your head you expose your neck, showing your ear. This signifies you are listening and displays trust. It can also be a sign of sympathy, pity or insincerity. The head bob – a simple nod is a sign of agreement, but excessive head bobbing is more of a concession or even resignation. Use the head tilt and head bob to show that you are paying attention, but when you need to command authority or make a statement, keep your head straight. What about your posture? People of power don’t worry about taking up too much

First impressions are important when you meet someone in person, but equally important when you step in front of a room to give a presentation. Did you know that it takes only 0.02 seconds for us to decide whether we like a speaker? You may very well decide whether or not you like a speaker even before her or she begins their speech. Jerry Seinfeld once said, “According to most studies, people’s number one fear is public speaking. Number two is death. Death is number two. Does that sound right? This means to the average person, if you go to a funeral, you’re better off in the casket than doing the eulogy.” Fear is a healthy emotion. It keeps us on our toes. Do not pretend that you will never be afraid before presenting. The key is to recognize and acknowledge the fear and nervousness, then find your own way to overcome them. Try breathing and relaxation techniques. Sit in a quiet area for a few minutes and calm yourself while thinking of something comforting. Listen to your “pump up” song before you speak. Above all, remember why you are there. There is a reason you are presenting: you are the expert. You have something to offer. You know something that your audience wants to learn. Sure, someone out there may know something that you don’t, but you know a lot more about the subject than they do or else they would have been asked to speak instead of you. What can you do to increase the chance that people to like you when you first step onto

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space. Their power is evident in their posture. Picture someone cowering in fear and shame - they tighten up and contract, holding their elbows to their side, wringing their hand or shrugging their shoulders. Stand up tall, push your shoulders back and don’t be afraid to own the space around you. Your appearance and your body language are indicators of your attitude and mood. Project positivity and show up with the intention to learn and participate. You have to be there, so make the most of it. Be courteous and use manners. Be on time. If you are not early, you are late. Who wants to hear excuses? Plan for the unexpected traffic delay. Nothing shows disrespect more than tardiness. Smile but don’t go overboard. Smiling can be very effective and make you more personable and approachable. Overdoing it and smiling too much, or in a fake way, will make you look disingenuous. Smile, make eye contact and raise your eyebrows to show you are listening. However, when the conversation gets serious, stop smiling.

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s oc i a l m e d i a focu s

the podium? Again, body language is crucial in those first few seconds when you take the stage. Own your space. Stand with confidence and pull your shoulders back. Look at the audience and smile. If you see a speaker with a dumbfounded look like a deer caught in headlights, your sense of confidence and trust that that person will be worth your time is smashed. Use your hands to share your energy. When you are using gestures, you are expressive and animated and the audience will copy your energy. If you keep your hands at your side or stuffed in your pocket, what does that say about your energy level or your confidence? Stand still. Don’t rock, sway or thrust your hips. You want to move around the podium and step

away from the lectern, but don’t dance around like you have to find the nearest restroom. With that said, you can walk onto the stage with the most confident stride and capture the audience with that gleam in your eye and engaging smile. However, if your presentation isn’t good, none of that matters. Visual aids, if used effectively, can really help get your message across to your audience. Remember, 55% of communication is non-verbal. Make sure that you secure the necessary equipment: projector, screen, microphone, speakers, WiFi, white board, cables and extension cords. Go to the site early in the day to ensure that the room, AV equipment and other material is set up the way you need. PowerPoints are very effective visual aids. They can enhance your speech or they can be a distraction. They are there to help convey your message, rather than give your audience reading material. How often have you seen a presentation with so much information on the slides that you spend more time trying to read the slide than listen to the speaker? Limit text on slides and use images that help convey your point or paint a picture of your idea. If you want the audience

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to have some detailed written information to take away, then put it on handouts.

On the Web Today, more than ever before, we are often presenting ourselves for the first time through the World Wide Web. This could be through a website, LinkedIn profile, Facebook page, Twitter account or another social media site. It is just as important to create a first impression from the web as it is in person or on the podium. Have you ever researched a business online before contacting them to buy a product or enlist their services? Have you ever used LinkedIn to either look for a job or to hire someone to fill a position? Have you ever tried to locate an individual on a social media site after meeting them in person? First and foremost, separate business from pleasure. If you use a social media site for fun, make sure you have a different account for business. Your friends and family may care about your business, but chances are your business associates don’t care about your friends and family. They do not need to know about your Saturday evening escapades, son’s soccer game or your vacation pictures. Your professional image online should be a reflection of your professional self. Take an objective look at your website. Does it project the image that you want for your business? Your website is analogous to your store or office and you want it to present the same professional image. Is it messy and confusing? Sterile and boring? Are there misspelled words? Keep it updated regularly and make sure visitors easily find your contact information. The profile picture that you use on social media should be chosen wisely. For Facebook, Google+ pages, Twitter and Pinterest, use your logo. These types of social sites are about the business, not about you. If you use your picture it becomes confusing, because it is not clear whether this is a personal profile or a business profile. LinkedIn, however, is about you. You just happen to work for, or own, this business. Do not put a picture of you and your significant other, especially if you have a cross gender name, like Kelly or Tyler. If you see a profile picture of a guy and a gal and the name is Pat, then how do you know which one is Pat?

Don’t put a photo of your dog unless you are a vet or run an animal shelter—this is not the place to showcase your furry friend. Unless you are a professional sportsperson or athlete, stay away from profile pictures of you engaging in sporting activities. How often should you participate in social media? It is a fact that one can get lost and spend countless hours perusing the depths of social media. It is a labyrinth of information and can suck you into its vortex before you can say, “follow me,” yet a regular and reliable presence is very important. How often have you looked for a company’s Facebook page only to find that they haven’t posted in a long time? Are they still in business? Why don’t they care enough about their audience to post current activity? Create a schedule for yourself and stick to it. You may remember the acronym CRISP from one of my previous social media articles (Concrete Openings, December 2012): • Check social media sites three to five times a week • Respond to comments from connections • Inform your connections of new happenings with your business • Search for new connections • Peruse other sources for interesting information to share Then log off and get to work. If you create a schedule, stick to it and keep it CRISP. You should be spending no more than 15-20 minutes a day, 3-5 times a week on social media.

Conclusion Competition is fierce out there. Many companies are vying for the same chunk of business. Many others are trying to get that same job or promotion. You must make that first impression count! You know you have the right product or service to solve your potential client’s problem. You know you have the best idea to pitch to your boss. Now you know the tips and tactics to create a positive and professional impression in the flesh, on the podium and on the web.

Sue Ann Kern is a trainer, consultant and professional speaker on social media. Through her company, Face It! Social Media, she helps businesses and individuals to promote their products, services and themselves through Social Media. Kern earned her degree in Electrical Engineering and spent the early part of her career as a digital designer and programmer. She has presented to the CSDA membership and held a workshop on the subject of social media. Sue Ann can be reached at 435-201-8610 or by email at

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Safety CountS

Silica Dust Controls in Concrete Construction By Alan Echt


rystalline silica is found in several construction materials, such as block, mortar and concrete, usually in the form of quartz. Tasks that cut, break, grind, abrade or drill those materials can result in overexposure to dust containing respirable crystalline silica (RCS). RCS refers to that portion of airborne crystalline silica dust that is capable of entering the gas-exchange regions of the lungs if inhaled; this includes particles less than approximately 10 micrometers in diameter. Workplace exposure to RCS can cause silicosis, a progressive lung disease marked by scarring and thickening of the lung tissue, as well as autoimmune diseases, chronic kidney disease and other lung diseases. Controlling RCS exposures to levels below occupational exposure limits is essential to protecting the health of construction workers. The Hierarchy of Controls Industrial hygienists anticipate, recognize, evaluate and control hazards in the workplace. They use a hierarchy of controls to lessen workplace hazards in this order of preference: engineering controls, work practices, administrative controls and personal protective equipment. Engineering controls include substitution of a less hazardous process or substance, isolation of the worker or process (for example, placing the worker in an enclosed cab) and ventilation. Ventilation can dilute a contaminant or contain the contaminant at its source; control at the source is called local exhaust ventilation. In construction, mining and mineral processing, dust suppression with water or other liquids is sometimes used to control hazardous dust at its source. Work practices and administrative controls are sometimes considered together when industrial hygienists use the hierarchy of controls. Administrative controls include training and worker rotation. Personal Protective Equipment (PPE) means things like respirators, gloves and hearing protection. PPE must be worn properly and continuously while the worker is exposed to the hazard, must be

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selected based on the hazard, requires worker training in its use, must fit the worker and must be replaced or cleaned and maintained on a regular basis. Regulations often mandate written programs to govern the administration of those processes for personal protective equipment. The History of Silica Dust Control in Construction Among the first recorded engineering controls for silica dust was a patent granted in 1713 in England to Thomas Benson for a method for wet-grinding flints after it was recognized that the dry process harmed workers. Dust control in construction is not new either. A Public Health Service publication from the 1950s shows rock drills being used and fitted with a water hose. The operator controlled the water flow with a valve near the handle of the drill. A force cup from a toilet plunger was used to direct the water downward and away from the operator. Further back still, during the 1930s, journal articles were published showing local exhaust ventilation systems for rock drills that used a portable pneumatically-powered dust collector (an air mover and cleaner), a length of flexible exhaust hose and a hood that surrounds the drill steel at the emissions source. A hood, duct work, air cleaner and air mover (usually a fan) are the components of any local exhaust ventilation system. In construction, vacuum cleaners are often used as air movers for local exhaust ventilation. Dust Control Methods In concrete construction, water is often used to cool and lubricate the diamond blades that cut concrete to extend blade life while suppressing hazardous dust. However, water creates a slurry that must be cleaned up after the job is complete. Using local exhaust ventilation to control dust, on the other hand, requires bringing more equipment to the worksite such as vacuums, hoses and generators.

Construction often takes place outdoors or in large spaces giving the perception that diluting hazardous dust can control exposures. While the construction environment seems like an ideal setting to rely upon dilution to control the dust, this is problematic for several reasons. • Workers are often positioned too close to the source of the contaminant for dilution to be effective. • The rate at which the contaminant is generated is too great for dilution to reduce it to safe levels.

• The wind is variable, as is the rate at which the contaminant is generated. • Other workers are often downwind of the emissions source. • Dilution should only to be used to control hazards if the toxicity of the contaminant is low. Either local exhaust ventilation to capture dust at its source or water to suppress dust generation at the point of operation are preferred to relying upon the wind or the volume of the work space to dilute silica dust to acceptable concentrations. Highlights of Current Research in Silica Dust Controls for Construction Vacuum cleaner selection Recently, researchers at the University of Iowa studied the relationship between dust collection, flow rate and pressure loss across the filter in four vacuum cleaners used in construction. They were interested in controlling dust from tuck pointing, a masonry construction task that uses grinders to remove mortar from brick walls. They compared vacuum cleaners that used cyclones to those that used bags. The researchers found that debris accumulation affected the performance of cyclonetype vacuums only minimally, while the performance of bag-type vacuums fell as debris filled the bags. For tasks that generate large amounts of debris, they recommended using cyclone-type vacuums over bag-type vacuums to preserve the air flow rate and prevent the filter from clogging. The researchers noted that while cyclone-type vacuum cleaners are more expensive initially, the cost saved by buying a cyclone-type vacuum cleaner may be offset by the cost of the bags and the labor cost of changing them frequently. They also recommended research to determine task-specific air flow rate specifications to aid in selecting appropriate vacuum cleaners. Finally, the researchers recommended using vacuum cleaners with static pressure gauges and training workers to use static pressure readings to determine when maintenance is required to restore proper air flow. Jackhammers Some tasks performed by specialty concrete contractors result in RCS exposures that exceed occupational exposure limits. One of those tasks is breaking concrete pavement, walls and floors with jackhammers. Researchers in New Jersey found that 24 of 25 samples collected while workers broke concrete pavement exceeded the NIOSH Recommended Exposure Limit (REL) of 0.05 milligrams of RCS per cubic meter of air (mg/m3). The highest

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recorded exposure found in the study was 12 times the NIOSH REL. Additionally, a British researcher found that breaking concrete walls resulted in silica exposures four times the REL, while breaking concrete floors resulted in exposures three to four times the REL. Dutch researchers investigated the effectiveness of using water sprays for jackhammer dust control while three workers broke concrete slabs indoors. The Dutch study found that two hollow-cone spray nozzles, each supplied with 0.085 liters of water per minute (L/min) reduced RCS exposures by 64%, to an average concentration of 0.17 mg/m3. Since the average exposure with the control still exceeded acceptable levels, the researchers recommended optimizing the design of the controls to improve their effectiveness. NIOSH researchers also worked with partners in industry and labor to test jackhammer dust controls while workers broke up concrete highway barriers at a contractor’s yard. Water applied using a solid cone nozzle at a flow rate of 0.3 L of water per minute (about 1-1/4 cups) resulted in a 77% reduction in RCS exposure to an average of 0.085 mg/m3. Extrapolating to a full shift, that means that on average, a worker could use the jackhammer with the water spray for 4 hours and 45 minutes in an 8-hour shift without exceeding the NIOSH REL for RCS (an example of combining an engineering and administrative control). One of the NIOSH partners, the New Jersey Laborers Health and Safety Fund, posted do-it-yourself plans for the jackhammer dust control on its website, other/jackhammer.pdf. Cut-Off Saws Cutting concrete with a hand-held abrasive cutter (a cut-off saw) can also result in overexposure to RCS. Data reported by the Occupational Safety and Health Administration revealed that sawing concrete dry resulted in a RCS exposure nearly 40 times the NIOSH REL for a 39 minute sample, or nearly twice the NIOSH REL when extrapolating to an eight hour shift with no further RCS exposure. Although task-specific exposures can be short, they can be very high. British scientists also performed a laboratory study of dust suppression on cut-off saws with water by measuring dust emissions at various water flow rates. They found that optimal dust control (> 96% reduction) was achieved at 0.5 L/min (about a pint of water), although a respirator is still required to protect the worker. This research formed the basis of an RCS dust control campaign in Great Britain to identify a range of practical interventions, including the use of alternate work methods,

designs to minimize the number of cuts needed, and substitute materials. One of the campaign’s leaflets can be found at uk/pubns/misc830.pdf. A video from the campaign can be viewed at http://www.hse. Grinding Concrete Another concrete construction task that has been the subject of engineering control research is grinding poured concrete walls after the forms are stripped. Researchers at the University of Washington studied the use of tool-mounted ventilation shrouds to control dust from hand-held concrete surface grinders (angle grinders). They found that shrouds reduced RCS exposures 89%–94%, from an average of 0.25 mg/m3 without dust control to an average of 0.034 mg/m3 when the shrouds were used. They also reported that 26% of the RCS samples with the control exceeded the REL. The air flow rate used with the dust control shrouds was about 70 cubic feet per minute. The Future of Silica Dust Control Research Silica dust control in construction is an area of ongoing research at NIOSH and around the world. At NIOSH, scientists and engineers are continuing to work with partners in industry and labor to evaluate engineering control technology for asphalt milling machines, concrete floor polishers and grinders, and saws used to cut fiber cement siding. To learn more about NIOSH research in silica dust control for construction or to partner with the organization in an upcoming study, visit http://www. or http:// NIOSH can also be contacted by phone at 513-841-4221. Alan Echt is an industrial hygienist with the Engineering and Physical Hazards Branch in the Division of Applied Research and Technology at the National Institute for Occupational Safety and Health in Cincinnati, Ohio. He has been involved in evaluating engineering controls for silica dust in construction since 1998. Alan recently gave a presentation on silica controls to the CSDA Board of Directors in September 2012. He can be reached at 513-841-4111 or “The findings and conclusions in this report are those of the author(s) and do not necessarily represent the views of the National Institute for Occupational Safety and Health.” Mention of any company or product does not constitute endorsement by the National Institute for Occupational Safety and Health (NIOSH). In addition, citations to websites external to NIOSH do not constitute NIOSH endorsement of the sponsoring organizations or their programs or products. Furthermore, NIOSH is not responsible for the content of these websites. All web addresses referenced in this document were accessible as of the publication date.

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OSHA/CSDA Alliance Latest

The Alliance between the Concrete Sawing & Drilling Association (CSDA) and the Occupational Safety and Health Administration (OSHA) is now in its eighth year and continues to educate contractors, prevent on-the-job accidents and injuries and provide vital materials to advance a safe work environment for sawing and drilling professionals. Here is the latest news from the Alliance Program.

Top 10 Frequently Cited Standards 2012 Listed here are the top 10 standards cited by Federal OSHA during the period October 2011 through September 2012. To generate a report on the most frequently cited federal or state OSHA standards, based on individual SIC codes and employee numbers, visit citedstandard.html. The OSHA/CSDA Alliance has released Best Practice documents on electrical safety and ladder safety, which are available to download in PDF format. In addition, CSDA has 35 industry Standards, Specifications and Best Practice documents available online. CSDA members also have over 100 Toolbox Safety Tips at their disposal, which cover all of the areas included in OSHA’s Top 10 citations list.

Standard 1. 1926.501


Fall Protection


2. 1910.1200 Hazard Communication


3. 1926.451 Scaffolding


4. 1910.134 Respiratory Protection


5. 1910.147 The Control of Hazardous Energy (Lockout/Tagout)


6. 1910.178 Powered Industrial Trucks


7. 1910.305 Electrical – Wiring Methods


8. 1926.1053 Ladders


9. 1910.212


Machine Guarding

10. 1910.303 Electrical – General Requirements 2,698 For more information about the OSHA/CSDA Alliance program, or to view documents released by this partnership, visit and click on the “OSHA Alliance” link under “Safety” or call 727-577-5004.

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Industry Bits Brokk Launches New Models at Bauma Exhibition Brokk AB is pleased to announce the addition of two new machines to its lineup, the Brokk 60 and Brokk 400D. At a height of just 34.4 inches, 2.75 inches lower than its predecessor, the Brokk 50, the 1,100-pound Brokk 60 is the smallest remote-controlled demolition machine in the world. Improvements to the hydraulic system have increased the unit’s flow rate from 4.8 to 5.8 gallons per minute. The addition of a sturdy steel cover and a covered slewing table protect internal components from debris, while LED lights have been installed to provide better illumination to the work area. The Brokk 60 maintains a horizontal reach of 8.2 feet and a vertical reach of more than 10 feet. It features the same mounting plate as the Brokk 50 it replaces, so is compatible with all existing attachments. Like the Brokk 50, the Brokk 60 can be transported in an ordinary passenger elevator and maneuver up and down stairs. The diesel-powered Brokk 400D is a more heavy duty machine that delivers a 60% increase in transport speed over its predecessor, the 330D. The new 400D has a slightly bigger envelope than the 330D, weighs approximately 2,200 pounds more and can reach out horizontally nearly 23 feet. With a total weight of 12,125 pounds, the 400D also features a powerful new engine. The company launched the new machines in April at the bauma 2013 exhibition in Munich, Germany. For more information, call 800-621-7856, email or visit

Blount Announces Director of Sales for ICS Business Blount International, Inc. has announced the promotion of Kevin Warnecke to the director of ICS sales for the Americas, a region focused on the United States, Canada and South America. Kevin’s responsibilities will be to serve the markets of professional sawing and drilling contractors, general construction and North American exports. Warnecke has been associated with the company for 23 years, has served on the CSDA Board of Directors and is chairman Warnecke of the association’s Training Committee. For more information, contact Kevin Warnecke at or call 503-709-1658.

Concut, Inc. Introduces 50-Horsepower Electric Slab Saw Concut has added the C-50E electric slab saw to its growing line of walkbehind concrete saws. Designed to maximize productivity on the job, this saw will pull up to a 60-inch-diameter blade out of the cut. A 4-speed gearbox means that a full range of blade sizes can be run on one saw. The extra-low gear has extra torque for larger diameter blades, while the true neutral setting allows for safe movement while moving around the job site. The C-50E is available in two different frame sizes. The full size frame has a blade capacity of 48 inches and a cutting depth of 21.5 inches; at just 33 inches wide, the saw can fit through a standard door opening. The larger “max” size frame can handle even deeper sawing, with a 60-inch blade capacity and a maximum cutting depth of 26.5 inches. Both frame sizes are 55 inches long and come with additional “bogey wheels” on the back side for turning and maneuverability. All C-50E saws feature the latest high-efficiency motors and run off a minimum generator size of 54 kilowatts. For more information, contact Tom Monaghan at 800-243-5888 or email

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CS Unitec Introduces EBM 350/3 PSA Rig-mounted Electric Core Drill The EBM 350/3 PSA rig-mounted core drill from CS Unitec is suitable for drilling up to 14-inch-diameter holes in concrete, reinforced concrete, asphalt and natural stone. The EBM 350/3 PSA weighs 79 pounds and features a 24.5AMP high-torque motor, three-speed gearbox with drilling speeds of 230, 500 and 1,030 RPM. An internal oil pump lubricates the gearbox and shaft for longer life. The EBM 350/3 PSA features soft start and overload protection and has a mechanical slip clutch to protect the drill in case of jamming. The 43-inch-tall anchor stand features a quick lock motor mount, positive locking knob and two 5-inch wheels for portability. It also includes a screw jack for bracing. The hand-crank, with an adjustable angle of up to 45 degrees, can be mounted on either side of the drill stand. For more information, call 800-700-5919 or email

Green Bond Diamond Blades from Dixie Diamond Dixie Diamond Manufacturing (DDM) adds a range of Green Bond diamond blades to its lineup for cutting green concrete. The blades are available in sizes from 12 to 16 inches in diameter and move slurry away from the core using specially designed inserts brazed into the gullets. This design can also guard against undercutting with segment heights between 0.425 and 0.525 inches. Green Bond blades have a maximum cutting depth of 5 inches with thicknesses from 0.125 to 0.375 inches. The blades are compatible with all slab saws. For more information, call 800-654-7224 or visit

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New CB80CT Power Unit from Diamond Products Diamond Products Limited announces its expanded power unit line with the CB80CT trailer mounted hydraulic power unit. The unit contains an 80-horsepower Cummins® diesel engine that is compliant with Interim Tier 4 emissions. The hydraulic flow and pressure control is fully adjustable with a maximum of 30 gallons per minute and 3,000 pounds per square inch with twin circuits. The CB80CT has a cordless remote controlled engine throttle and two Hannay® reels. For more information, call 800-321-5336 or visit

Robert Hodson, 1935–2013 Robert “Bob” Hodson, an industry professional from Leawood, Kansas, passed away peacefully at his home on February 7, 2013 from stage 4 lung cancer. Bob graduated from the Illinois Institute of Technology (IIT) in 1961 with a B.S. Degree in Metallurgical Engineering. Upon graduation, he worked for IIT as a research metallurgist until 1967. From 1968 to 1979, he was the research director for MK Diamond Products. During the 80’s and 90’s, Bob worked for several companies, including Magnum Diamond, Penhall Company and Sanders Saws, then in the early 2000s, became an independent metallurgical consultant. In 2005, Bob became the metallurgical consultant for Multiquip/ Sanders based in Honey Brook, Pennsylvania, a position he held until his passing. He was also a regular contributor to Concrete Openings as a writer of Tech Talk articles. He is survived by his loving wife of 24 years, Loann “Lolly” Hodson; son Roger; brothers Homar and Dick; six step-children and 10 step-grandchildren. He will be sorely missed by all who knew him.

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B ITS New MALA Utility Detection Solution MALA Geoscience recently released its new Easy Locator utility detection tool. This new unit uses GPR technology to locate both metallic and non-metallic utilities and has more than 14 hours of continuous operating time. Scan rate is above 1,024 scans per second and can be operated above 15 mph. The Easy Locator has a High Dynamic Range (HDR) broadband antenna and a large, color LCD monitor screen. The software has been improved and the graphical user interface simplified. Other features include a back up cursor for quick and accurate utility marking, save and export functions for GPS markers and a real-time zoom function. For more information, call 843-852-5021 or email

EDCO Introduces New Generation of Concrete Floor Grinders Equipment Development Company, Inc. (EDCO) introduces a new line of grinders that replace the traditional wooden wedge system of installing grinder accessories. The new system has been engineered with a faster, customer-friendly slide-on system. Using only new holding cases, the company’s Dyma-Sert and PCDyma-Sert accessories slide onto the new grinders without the use of tools. New grinding and resurfacing accessories are also available for the new models. The new two-disc grinders are available with gas and electric power options, Velcro dust shrouds, multivacuum ports and laser-cut side loading weight trays. For more information, contact Jason Stanczyk at 800-638-3326 or email

Brute Turbo Breaker Introduced by Bosch

CSDA Training 2013–2014 Operator Certification Concrete Polishing

Nov 4–9 Nov 7–8

World of Concrete Jan 20–23, 2014 24/7

For more information, visit or call 727-577-5004.

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The Association of Cutting Professionals

Bosch is pleased to introduce the BH277OVCD Brute™ Turbo breaker hammer. A new motor has been designed to deliver 23% more impact energy than the previous Brute model. The unit weighs 63 pounds with EPTA impact energy of 43 foot-pounds. The vibration control system includes a longer air cushion in the hammer mechanism, designed to substantially reduce vibration levels at the source. Shock-mounted handles complete the vibration control system, providing contractors with the lowest vibration levels possible without adding additional size or weight to the tool. The BH277OVCD also features a new hammer tube design that dissipates heat buildup inside the tool, while a reinforced hammer tube collar, spring and bolts improve durability and dampen blank beats. A non-slip rubber cover helps prevent the tool from tipping over while not in use. The BH2770VCD Brute Turbo Kit includes four chisels and a deluxe cart that converts to a hand truck. For more information, visit or call 877-267-2499. Visit for additional tips and videos.

DITEQ Introduces the C63-AX13 Diamond Blade DITEQ Corporation has added to its diamond blade line with the introduction of the C63-AX13—a Generation II ARIX blade with diamond placement technology throughout the diamond segment. This blade is designed for cutting medium hard to hard aggregates on high-horsepower saws and is available in sizes from 14 to 42 inches in diameter. The C63-AX13 is particularly suitable for cutting concrete bridge decks and asphalt overlays and blade thicknesses range from 0.125 and 0.187 inches. The new blade is available with inserts for undercut protection. For more information, call 866-688-1032 or visit

Husqvarna Announces New Territory Managers Husqvarna Construction Products is pleased to announce four new appointments. Craig Caliva is the new territory manager for Arkansas, Louisiana and Mississippi. Caliva has been in the demolition industry Caliva since 1995 and started his own company in 2005. Carlos Gomez is the company’s new district manager for Northwestern Mexico. Working out of Tijuana, Gomez is in charge of Baja California, Baja California Sur, Chihuahua and Sinaloa. Gomez He brings 15 years of sales experience with him to this position. Gary Morrisette is the new equipment applications manager for the central region of the United States. Prior to joining Husqvarna, Morrisette was the owner and operator Morrisette of a concrete cutting business for 30 years. Ruben Rodriquez is the company’s new territory manager for Northeast Mexico. Ruben is responsible for Coahuila, Durango, Nuevo Leon, Tamaulipas, San Luis Potos and Zacatecas. Rodriquez He has 16 years of work experience. For more information, call 800-825-028 or visit

Hilti Launches DD 160 Diamond Coring System The Hilti DD 160 diamond coring system is designed for rig-based wet coring work on concrete walls and floor decks, including drilling holes in diameters up to 8 inches. The DD 160 has a 2,200-watt motor, 3-speed gearing and features power control LED lights to help inexperienced users achieve the optimum rate of drilling progress and maximum core bit life under all conditions. The system is also suitable for drilling penetrations for pipes of all kinds— through-holes for ventilation ducts or cable installations and blind holes for large diameter anchors, reinforcing bars and the installation of railings and barriers. Two different drill stand options are available. The basic version is equipped with a compact base plate for anchor fastening. The premium stand has a tilt mechanism and vacuum base plate for convenient vacuum fastening. The rig has a total weight of 36 for the basic version or 47 pounds for the premium. For more information, contact Hilti customer service at 800-879-8000 in the U.S., 800-461-3028 in Canada, or visit in the U.S. or in Canada.

Apollo Introduces Insurance Program for CSDA Members Apollo General Insurance Agency, Inc. has introduced an insurance program specially tailored to the specific needs of CSDA contractor members. Utilizing a “15 Best” rated insurer, General Liability and Commercial Automobile coverage is written in-house. The company also provides coverage for Property & Equipment, Excess Liability, Contractors’ Pollution, Workers’ Compensation and Bonds. The program is open to all members of the association, with a General Liability minimum premium of $2,500. It also offers a credit structure for CSDA members that are loss free and have achieved Level 1, 2 or 3 certification through the association’s Company Certification Program. A discount between 5% and 15% is applied to these companies. Apollo representatives can work directly with the contractor or with an agent or broker. For more information, contact Bob Elster at 707-996-2912 x17 or


The all New BROkk 100: fOR ThOSe haRd TO ReaCh plaCeS. With a vertical reach of over 14 feet, the all new one-ton class B100 demolition robot is smaller and lighter than its predecessor, the best-selling B90. Yet the B100 boasts a whopping 35% more hitting power and still fits easily through a 3' 0" doorway. Confined space concrete cutting, crushing, grinding and breaking never looked so good. Brokk. Bring it on.

Brokk Inc | 800.621.7856 | 360.794.1277 |

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Penhall Company Appoints New Strategic Business Manager

New Line of Diamond Tools from K2 K2 Diamond is pleased to announce its Freedom Line of diamond tools. This new line is designed for professionals cutters who need to change the size, specification and performance of their tools to fit today’s job challenges. Blades are available from 12 to 90 inches in diameter to fit 5- to 500-horsepower concrete saws. Included in K2’s new Freedom Line of diamond tools are the Red Hawk, White Falcon, Golden Eagle and SR Viper cured concrete blades. The company is currently developing additional tools, including a new USA asphalt blade, to expand this new line. For more information, visit or call 800-539-6116.

Penhall Company recently announced the appointment of Lisa Mullen as the company’s strategic business manager, with responsibility for growing market share in target industries. Her primary task is the development of contacts, leads and projects in the nuclear industry. Prior to joining Penhall Company, she worked as marketing coordinator at Cutting Edge Services Corp., and served in many management positions during her 20+ years with the Bluegrass Companies. She joined Bluegrass in 1989 and served as CEO and business development Mullen director. Lisa has also served on the CSDA Board of Directors, the National Demolition Association (NDA) Board and the DD&R sub committee of the American Nuclear Society (ANS). For more information, contact Mike Meagan at 714-578-3221 or email

Pentruder Announces Additional Blade Guard Sizes Pentruder, Inc. has announced the availability of two new sizes of wall saw blade guards to meet the needs of its North American customers. The new blade guards are designed for use with 42and 54-inch-diameter blades and are compatible with the entire line of Pentruder’s high frequency wall saws. These new sizes have been developed in response to customer requests and join the existing line of 32-, 40-, 48-, 63- and 79-inch guards. For more information, contact Terry Martin at 562-445-6429 or email

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Brokk Appoints Catalanotto as Northeast Regional Sales Representative Brokk AB has added James “Cat” Catalanotto to its U.S. sales team. Catalanotto, who owns and operates EMCAT LLC, a manufacturers’ representative company in Boston, is Brokk’s new regional sales representative for the New England states. Catalanotto is working to strengthen relationships with current customers while developing new Catalanotto connections for Brokk in Connecticut, Massachusetts, Rhode Island, Vermont, New Hampshire and Maine. Catalanotto brings more than 22 years of sales experience in both distribution and direct lines to his new role. Prior to launching EMCAT in 2012, he was the northeastern United States sales manager for Husqvarna Construction Products for nearly 12 years, and before that he worked for Dixie Diamond Manufacturing and Pro-Companies. For more information, call 800-621-7856, email or visit

SC330 Concrete Crusher Released by Traxx The SC330 concrete crusher from Traxx Construction Products consists of a crusher tool and a high pressure power pack with either a petrol engine or single/3-phase electric motors. It is suitable for use on reinforced and non-reinforced concrete, brick walls, structures in composite stones and masonry, ceilings, pillars and stairways. Weighing 42 pounds, the mouth of the 3-horsepower crusher opens up to 12 inches wide and can crush concrete to a depth of 6.7 inches. The SC330 can achieve a maximum crushing force of 600 bar. For more information, visit

IND U STR Y Bosch Adds New Rotary Hammer to Lineup Bosch Power Tools announces the next generation RHH181 18V Li-Ion SDSplus® rotary hammer. The hammer’s brushless EC motor delivers up to 30% more power than previous models. New Bosch CoolPack batteries have been designed to incorporate an advanced, heatconductive housing that reduces heat build-up. This can increase battery life up to 100% longer than regular batteries. The RHH181 18V Li-Ion rotary hammer also features a new chisel function and a pneumatic hammer mechanism. The new tool can drill more than 150, 0.25-inch-diameter by 1.5–inch-deep holes in concrete with one battery charge. A 3-mode selector switch lets users choose between rotary hammer, rotation only and chisel mode. The Vario-Lock™ rotates the chisel into various positions for chiseling work at any angle. Additional features include an LED work light to illuminate work areas during low light applications and large soft-grip handle for reduced fatigue during extended use. For more information, visit or call 877-267-2499. Visit for additional tips and videos.

Two New Appointments at Concut Concut, Inc. is pleased to announce that Chris May has joined its sales team as regional sales manager for the Midwest. Chris brings a great deal of diamond tool and equipment knowledge and experience to his new position. In a professional career spanning nearly 20 years, his sales and marketing background includes work with both Husqvarna and Hilti. In his new role, Chris will lead Concut’s May sales efforts in the Midwestern states. He will focus on providing technical expertise and service to professional sawing and drilling contractors, as well as to Concut’s distribution partners in the region. Terry Lannom has joined the company as sales manager of Concut’s Wolverine Equipment division. Terry has over 30 years of experience in the construction industry, primarily in highway Lannom grooving and grinding. At Concut, Terry will initially focus on sales and new product development for Wolverine Equipment, best known for building specialized hydraulic equipment. Later in 2013, Terry will transition to supporting Concut’s expanding grooving and grinding business throughout the U.S. and overseas. He is based in Lebanon, Tennessee. For more information, contact Tom Monaghan at 800-243-5888 or email

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EDCO Launches New Division, Appoints Sales Manager After investing in new manufacturing technology, Equipment Development Company, Inc. (EDCO) has launched a fabrication division. EDCO Fabrication is a full service provider of contract manufacturing services, specializing in laser cutting, forming and welding. The Knable division also offers machining, assembly, powder coating, wet painting and world-wide shipping. To coincide with the launch of EDCO Fabrication, the company has announced the hiring of Josh Knable as sales manager for the new division. Knable has over seven years of experience in the metal fabrication industry. For more information, visit or contact Josh at 301-514-4209.

Members of German Association Travel to South America for Cement & Minerals Road Show In May, a group of members from the Verband Deutscher Maschinen und Anlagenbaum (VDMA), the German Engineering Federation, travelled around South America as part of the first Cement & Minerals road show. The road show was organized by the association of construction equipment and building material machinery, which is part of VDMA, in cooperation with the German Chambers of Commerce. It included stops in Peru, Chile and Brazil. Seven companies working in the field of cement engineering and mineral processing joined forces for the event. They invited South American cement manufacturers and mine operators to familiarize themselves with high tech solutions on offer in other parts of the world, and to discuss their local requirements and challenges so the Germans could share knowledge with them. The aim of the road show was to strengthen existing business contacts and attract new clients from this growing market. The delegation was led by Mr. Lothar Jungemann of Thyssen Krupp, who was accompanied by Dr. Reinhold Festge of Haver & Boecker—the chairman of the Latin American Initiative by the German Economy (LAI). Prof. Dr. Holger Lieberwirth of the Technical University of Freiberg was also in the party, along with Christian Pfeiffer, Claudius Peters, Toni Technik and representatives from Loesche and FLSmidth Pfister. For more information, contact Alessandro Colucci at +49-69-6603-1254 or

Kroeker Elected President of NDA Jeff Kroeker of CSDA member Kroeker, Inc., a sawing and drilling, demolition and recycling contractor from Fresno, California, has been elected President of the National Demolition Association (NDA). He was elected at the association’s 40th Annual Convention in San Diego this past March. Other changes to the NDA Executive Committee are the election of Peter Banks of CEI Boston LLC, Norfolk, MA as Vice President; Scott Knightly of EnviroVantage, Epping, NH as Secretary; and Christopher Godek of New England Yankee Construction Kroeker LLC of Milford, CT as Treasurer. Don Rachel of Rachel Contracting LLC of St. Michael, MN is Past President. Michael R. Taylor CAE serves as Executive Director. The Association has appointed a number of new members to its Board of Directors. They are John O’Keefe of Brandenburg Industrial Service Co., Chicago, IL; Rick Givan of LVI Environmental Services, Inc. of Denver, CO; Anthony Pirrone of Ontario Specialty Contracting Inc. of Buffalo, NY; Andrew DeBaise of Rocky Mountain Recycling Inc. of Commerce City, CO; and William Sinclair of Safedem Limited, Dundee, Scotland. For more information, visit

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CertifiCATION Operator Certification

COMPANY Certification

Companies listed here have invested time and money to send their operators to CSDA’s Operator Certification. If you are committed to professionalism in the concrete cutting industry, consider sending your operators through the training programs offered by the CSDA.

The CSDA Company Certification Program is the first of its kind in the industry. This 3-tier program has been created for cutting contractors to provide owners, architects, engineers, general contractors and government officials with a valuable pre-qualification tool that acknowledges sound business practices. It is available to all sawing and drilling contractors.

abc cutting contractors birmingham Bessemer, Alabama

East Coast Concrete Specialities, Inc. Jessup, Maryland

abc cutting contractors mobile Daphine, Alabama

ELMER’S CRANE & DOZER, INC. Traverse City, Michigan


HAFNER & SON, INC. Danielsville, Pennsylvania


Hard Rock Concrete Cutters, Inc. Wheeling, Illinois

Atlantic Concrete Cutting, Inc. Mt. Holly, New Jersey

Hard Rock Sawing & Drilling Specialist Co. Keshena, Wisconsin

AUSTIN ENTERPRISE Bakersfield, California

Holes Incorporated Houston, Texas

B.T. Rentals Limited Woodbrook, Trinidad & Tobago

HOUSLEY DEMOLITION CO., INC. Visalia, California

Cal West Concrete Cutting, Inc. Union City, California

International Drilling & Sawing, Inc. Montgomery, Alabama

Central Concrete Cutting, Inc. Edgar, Wisconsin

j-ray contractors, llc Marrero, Louisiana




Con-Cor Company, Inc. Menomonee Falls, Wisconsin

K.C. Coring & Cutting Construction, Inc. Kansas City, Missouri

Concrete Cutting & Breaking Co. Jacksonville, Florida

L&S FORMLESS CURB COMPANY Hanover, Pennsylvania

cobRa concrete cutting services co. Arlington Heights, Illinois

Concrete Cutting Specialists, Inc. Freeland, Michigan

LIUNA local 506 Training Centre Richmond Hill, Ontario, Canada

Concrete Penetrating Co. Dallas, Texas


Concrete Renovation, Inc. San Antonio, Texas

M6 Concrete Cutting & Coring Wichita, Kansas

Core Solutions Ltd. Maraval, Trinidad & Tobago

Oklahoma Coring & Cutting, Inc. Arcadia, Oklahoma

Coring & Cutting of Springfield, Inc. Nixa, Missouri

Pacific Concrete Cutting & Coring, Inc. Lihue, Hawaii

Coring & Cutting Services, Inc. Bentonville, Arkansas

Penhall Company/Concrete Coring Company of Hawaii Aiea, Hawaii

Coring & Cutting Services, Inc. Jacksonville, Arkansas Cut-Rite Concrete Cutting Corp. Pawtucket, Rhode Island Cutting Edge Services Corp. Batavia, Ohio d.m. conlon/dan-kel concrete coring, sawing & scanning Myrtle Beach, South Carolina

LEVEL THREE Atlantic Concrete Cutting, Inc. Mount Holly, New Jersey

deandrea coring & sawing, inc. Henderson, Colorado Di-tech international, inc. Winnipeg, Manitoba, Canada hard rock concrete cutters, inc. Wheeling, Illinois Holes Incorporated Houston, Texas

PG cutting services Lake Elsinore, California Professional Concrete Sawing Erie, Pennsylvania quick cuts concrete cutting services, llc Belvidere, Illinois


Roughneck Concrete Drilling & Sawing Morton Grove, Illinois

central concrete cutting, inc. Edgar, Wisconsin

DARI Concrete Sawing and Drilling Raleigh, North Carolina

True Line Coring & Cutting of Chattanooga, LLC Chattanooga, Tennessee

DeAndrea Coring & Sawing, Inc. Henderson, Colorado

True Line Coring & Cutting of Knoxville, LLC Knoxville, Tennessee

Concrete Renovation, Inc. San Antonio, Texas

Delta Contractors & Associates, LLC Baltimore, Maryland

True Line Coring & Cutting of Nashville, LLC Nashville, Tennessee

Dixie CONCRETE CUTTING CO. College Park, Georgia

wolf industrial services San Francisco, California

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Cutting Edge Services Corp. Batavia, Ohio GREENE’S, INC. Woods Cross, Utah WESTCOAST CUTTING & CORING, LTD. Coquitlam, British Columbia, Canada

membership NEW MEMBERS The Concrete Sawing & Drilling Association is a nonprofit trade association of contractors, manufacturers, distributors and affiliates from the construction and renovation industry. Membership in CSDA is open to concrete cutting contractors, manufacturers and distributors of concrete cutting equipment and affiliated companies who provide products and services to the concrete sawing and drilling industry. Founded in 1972, CSDA reached the milestone of 500 member companies in 2006.

North American Contractor ACE Concrete Cutting Cumberland, Rhode Island Aggregate Technologies, Inc. Houston, Texas Allegheny Diamond Services Elizabeth, Pennsylvania

Custom Concrete Cutting McHenry, Illinois We Cut Concrete Co., Inc. Bend, Oregon

Overseas Contractor CJSC Moscow, Russia

Brookbank Core Drilling & Sawing, Inc. Waldorf, Maryland


Color Surface Henderson, Nevada

Carmenita Truck Center Santa Fe Springs, California

CT Concrete Cutting, Inc. Murrieta, California

UPS Freight Savings Program


CSDA members can enroll and take advantage of the UPS Freight Savings Program. Companies that join the program can save a minimum of 70% on qualifying shipments. Enrollment is free, with no obligations or minimum shipping requirements.

In 1947, my grandfather helped manufacture the company’s first diamond core and my family has been involved with the diamond tooling industry ever since. Western Saw became a member of CSDA in 1986, but it wasn’t until around five or six years later that I began to see how the association was refocused and trying to impact the industry in a positive way. For me, the number one benefit of being a part of this association is networking. CSDA provides me with several opportunities to talk with not only my customers—diamond tool manufacturers—but with end users—concrete cutters—about how the company’s products are performing out on the jobsite. The feedback I receive from contractors is invaluable to both my company and my customers, giving us a great advantage over our competitors. My son and nephew represent the company’s fourth generation of diamond tool manufacturers, and they too are seeing the benefits of CSDA membership. Both are part of

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Member Benefits

The UPS Freight Savings Program applies to shipments weighing 150 to 20,000 pounds that are: • Shipments billed collect to your company

Kevin Baron

• Pre-paid shipments from your company • Shipments billed to your company as a third party

the association’s Next Generation group. They can talk with others who are poised to succeed their parents or mentors and discuss their business problems, or they can turn to experienced guys who have been through it all. I am proud to do my bit to improve the industry as part of the association’s Board and committees, and in return I feel my family and business are reaping the rewards of being a CSDA member.

For more information about this program, call 866-443-9303, ext. 4081 or email For information about CSDA’s other partnerships and member benefits, visit and click on “Member Benefits” under the Members button or call 727-577-5004.

Kevin Baron Western Saw, Inc. Oxnard, California

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Membership Application company information

background information


start up date


average annual gross income $

city state/province

annual growth rate

zip/postal code

no. branch locations




years in business

no. employees

contractors: no. trucks


principals/owners of business

web address

other professional association memberships

official representative others participating in csda activities

contractors only—check below to identify the services you offer, which will be listed in the print and online directories:

principal business activity

flat sawing

core drilling

wall sawing

selective demolition

curb cutting

ground penetrating radar

wire sawing

concrete polishing

surface preparation

slurry recycling

membership dues schedule please circle your dues amount gross sales north american contractor polishing contractor gpr imaging contractor manufacturer distributor overseas contractor affiliate*














$1,390 $750 $1,875 $1,250











*AFFILIATE: A person, firm, corporation, society, government agency or other organization providing services to the concrete sawing and drilling industry.

membership dues

payment check enclosed (us funds and drawn on a us bank) visa mastercard discover

company annual dues (from above)


additional branch locations ($130 per location)


csda website hotlink ($100) links directly to your company website


card no. expiration date

3-digit verification (csc)

name on card billing address

annual membership total



csda • 13577 feather sound drive, suite 560, clearwater, fl 33762 • tel: 727.577.5004 • fax: 727.577.5012 • E-MAIL: INFO@CSDA.ORG •

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BENEFITS Networking at the Annual Convention and Quarterly Meetings The number one benefit for members has always been the opportunity to network with industry professionals at the annual convention and quarterly meetings. This networking provides opportunities to forge new relationships and learn from other experienced professionals.

Representation with Governmental Organizations CSDA has an Alliance with OSHA to advance the safety of cutting contractors. This partnership included issuing Best Practice and Toolbox Safety Talk documents, joint exhibitions at trade shows, review of safety materials and round tables.

Discount Programs The Association negotiates member benefit programs with national vendors in order to provide cost-savings opportunities for CSDA Members. • Staples • UPS Freight • V-Belt

CSDA Website The CSDA Website at contains a wealth of information available 24/7 in the “Members” section. The online discussion boards also provide members a forum to discuss technical issues, sell equipment, hire employees or any other relevant topics.

CSDA Training and Certification Programs Over 3,000 members have graduated from more than 20 classroom, hands-on and online training programs. In addition, CSDA has certification programs for companies and individual operators. See pages 8 and 9 for more details.

CSDA Safety Resources and Toolbox Safety Tips (TSTs) The 230-page CSDA Safety Manual, CSDA 57-page Safety Handbook and five safety DVDs are designed specifically for concrete cutters, polishers and scanners. They are available to members at a significant discount. TSTs can be used in employee safety meetings and can be an important part of your company’s safety program. CSDA has released over 100 TSTs since the program began. A new TST is released every month.

Concrete Openings ConcreteOpenings at is the only professional magazine dedicated to concrete cutting with a circulation of 17,500 per issue. Members can advertise at significant discounts and use the opportunity to have their job stories reach almost 7,000 architects, engineers, general contractors and government officials.

CSDA Next Generation Committee The committee aims to continue the growth of the association while serving the needs and wants of the younger generation, with the goal of continuing to set a standard of excellence.

Mentor Program New Members can receive personalized assistance from a current CSDA Board or Committee member during their first year of membership.

Market Intelligence • Helps you plan, measure, understand trends and markets. • 3rd party non biased market research • Surveys and reports

World of Concrete Co-Sponsor Members receive free registration and significant discounts on educational seminars fees. CSDA also supports the industry by exhibiting at this event and sponsoring seminar sessions.

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Other benefits and programs can be reviewed by visiting the CSDA Website at or call the CSDA office at 727-577-5004.

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Calendar 2013 June 6-7 CSDA Summer Meetings Westlake Village, CA Tel: 727-577-5004 Email:

June 14-16 Construction Expo 2013 Colombo, Sri Lanka

August 22-23 Our World in Concrete and Structures Conference Singapore Tel: 65-6733-2922 Email:

September 2-4 BIG 5 Construct India 2013 Mumbai, India

CSDA FALL meetings September 5–6

November 6-7

January 22-23

CSDA Wall Sawing 201 Operator Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email:

CSDA Concrete Polishing Class Las Vegas Convention Center Las Vegas, NV Tel: 727-577-5004 Email:

November 7-8 CSDA Concrete Polishing Class Austin Enterprise Bakersfield, CA Tel: 727-577-5004 Email:

CSDA Wire Sawing 201 Operator Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email:

November 14-15 International Conference on Stone and Concrete Machining Dortmund, Germany Email:

CSDA Winter Meetings Stein Eriksen Lodge Park City, UT Tel: 727-577-5004 Email:

CSDA Fall Meetings The Westin Annapolis Annapolis, Maryland Tel: 727-577-5004 Email:

September 12-15 International Concrete Polishing and Staining Conference Gwinnett Center Duluth, GA Tel: 716-228-0265

November 4-5 CSDA Slab Sawing & Drilling 201 Operator Certification St. Petersburg College Clearwater, FL Tel: 727-577-5004 Email: 6 0 | J U NE.1 3

January 22–23

November 8-9

December 5-6

September 5-6

csda wall sawing 101 training class

2014 January 20-21 CSDA Estimating Class Las Vegas Convention Center Las Vegas, NV Tel: 727-577-5004 Email:

January 21-24

January 22-23 CSDA Wall Sawing 101 Training Class Las Vegas Convention Center Las Vegas, NV Tel: 727-577-5004 Email:

January 23 CSDA Next Generation Meeting Las Vegas Convention Center Las Vegas, NV Tel: 727-577-5004 Email:

March 4-8 ConExpo – Con/Agg 2014 Las Vegas Convention Center Las Vegas, NV

March 11-12

World of Concrete Las Vegas Convention Center Las Vegas, NV Tel: 972-536-6379

CSDA Spring Meetings The Westin La Paloma Resort & Spa Tucson, AZ Tel: 727-577-5004 Email:

January 22

March 13-15

CSDA Board Meeting Las Vegas Convention Center Las Vegas, NV Tel: 727-577-5004 Email:

CSDA Convention and Tech Fair The Westin La Paloma Resort & Spa Tucson, AZ Tel: 727-577-5004 Email:

ADVERTISING and readership

the official magazine of the concrete sawing & drilling association

Want to Target the Specialized Industry of Sawing & Drilling?

Readership by Profession

Circulation 17,500+ minimum, per issue

Advertising in Concrete Openings magazine is the only way to reach the specialty market of sawing and drilling contractors who cut concrete, asphalt or masonry because it is the only magazine in the market specifically targeted to this segment of the sawing and drilling industry.



6,500+ general contractors, engineers, architects and government officials who specify sawing and drilling

How Do You Reach 17,500+ Sawing and Drilling Professionals?



Each issue of Concrete Openings magazine is sent to more than 11,000 sawing and drilling operators, manufacturers of sawing and drilling equipment and suppliers to the industry and more than 6,500 specifiers of concrete cutting services around the world.

Who Reads the Magazine? Concrete Openings reaches sawing and drilling contractors, as well as specifiers of sawing and drilling services including engineers, architects, general contractors and governmental agencies. Why waste your message on unnecessary circulation? Advertising in Concrete Openings guarantees a targeted audience of industry professionals.

Concrete Openings has its own website. Advertisers have direct links to their websites placed on our Advertisers page as a complimentary addition to ad placement. A full copy of the magazine is also available for visitors to read on the website. Visitors to the site can now access our advertisers at the touch of a button. The Concrete Openings Website also has advertising opportunities available throughout the year. Visit for more information.

Readership Per Issue In a recent poll, a section of Concrete Openings subscribers revealed that 66% pass on their copy of the magazine to at least one other person, with almost 25% stating that the magazine is passed on to four or more people each issue. This translates to an average of 3.75 people reading each issue of the magazine for a total readership per year of approximately 60,000.

Not a Subscriber? Get your free subscription today! Visit and click “subscribe”.

the official magazine of the concrete sawing & drilling association

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member and prospective member companies made up of sawing and drilling contractors,manufacturers, distributors and affiliates

• Specifiers • Cutting Contractors • Manufacturers, Distributors


The number of countries where Concrete Openings subscribers receive their copies.

Do you “Like” CSDA? CSDA is on Facebook, and we hope you “like” it! The CSDA page is packed with all the latest news, updates, photos and videos from the association and Concrete Openings magazine. Look out for exclusive content and become “friends” with others who are looking to network and promote the sawing and drilling industry. Join our growing fan base and stay in touch with the association through your PC, laptop or mobile device.

c o n c ret e o p en i n g s | 6 1

ADVERTISers To receive additional information about products advertised in this issue, visit the advertisers page on, or contact the vendors below.






Brokk, Inc.


45, Inside Front Cover

Diamond Products



Diamond Tools Technology



DITEQ Corporation



Dixie Diamond Manufacturing



43 Expert Equipment Company


41 GDM Technologies/Terra Diamond


49 GelMaxx


16 Geophysical Survey Systems, Inc. (GSSI)


Inside Back Cover

Hilti North America


32, 33, Outside Back Cover

Husqvarna Construction Products


2 ICS, Blount Inc.



James Instruments



K2 Diamond



Merit Engineering & Equipment Company



Multiquip/Sanders Saws


48 Pentruder, Inc.





EDCO-Equipment Development Co., Inc.

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Western Saw, Inc.

Cured Concrete Asphalt Green Concrete Joint Widening

When the blade hits the road...DTT will be there to find the right solutions for your project.

Diamond Tools Technology 723 Hastings Lane Buffalo Grove, IL 60089 **877-345-6388**

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c o n c ret e o p en i n g s | 6 3

director’s dialogue

CSDA Members Rock!

Patrick o’brien Executive Director


SDA has always been a generous and helpful group of individuals dedicated to advancing the interests of the association and the industry. Member surveys and feedback/testimonials consistently identify that networking is by far the greatest CSDA member benefit. Now CSDA members are taking that spirit of cooperation to another level by partnering on projects and utilizing each other’s strengths. The March 2013 Concrete Openings article “Break in the Bahamas” highlighted a cooperative wire saw job that brought together two CSDA members who met while serving on the association’s Board of Directors. Tim Beckman (Cutting Edge Services) and Skip Aston (Ohio Concrete Sawing & Drilling) forged a relationship of understanding and respect for each other’s skills that ultimately led to partnering on a job to remove a sunken pier in the Bahamas. Since the job story was published, these contractors have been approached by others to conduct similar partnerships. Over the years I have informally heard many stories of cooperation between CSDA members. One of the more interesting stories occurred at a hotel bar in Tokyo. One contractor, who was a novice at wire sawing, had just been awarded a big wire sawing job. The more experienced wire sawing contractor volunteered to send his operators to train the novice operators. Now that is being generous!

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But it isn’t just the large jobs where one CSDA member can help another. Frequently, one member will call another for all sorts of advice. The members may have met at a CSDA Convention, a quarterly Board and committee meeting or at industry events like World of Concrete. Contractors will share knowledge about what has worked well for them on the jobsite, things they have had to learn the hard way or offer up business and operational advice that has helped them succeed. Many of the presentations or roundtables at the association’s annual Convention are the result of one contractor going through a bad experience and wanting to help other CSDA members avoid the same unpleasant experience. In addition, many contractors who have successfully completed a challenging project are willing to share their experience with other CSDA members. These experiences are rather unique, in my opinion, and the great people in the association are why I have stayed in this industry for so many years. So if you are a CSDA member, call and take advantage of the friendly and cooperative relationship between members. If you are not a member, consider becoming a part of CSDA and join this network of professionals who are dedicated to advancing the association and the industry. I know that you will be surprised at how helpful and friendly CSDA members are. Quite simply, they rock!

DST 10-E Wall Saw System

Designed for speed and ease of use. Quickly transported and easily set up by one person, the Hilti DST 10-E Wall Saw is ideal for small- to mediumsized jobs. Its unique design and impressive performance make this type of work easier than ever before. And because the electronics are incorporated into the saw head, there’s no need for a separate electrical power unit. Visit Hilti Online or contact your Hilti representative for more information.

Hilti. Outperform. Outlast.

Hilti Diamond Systems 1-800-879-4000 •

Cut deep. Husqvarna’s High Frequency wall saws are easy to transport and quick to assemble at the site. Every detail is carefully planned and designed to ensure efficient operation. The Husqvarna WS 482 HF wall saw boasts more power, a larger blade capacity (63") and offers the best power-to-weight ratio on the market. The saw features a powerful, water-cooled electric motor, which generates an impressive 25 hp to the bladeshaft. Its two-speed gearbox delivers a wide RPM range to handle blades at their optimal performance level. In addition to its powerful motor, the saw is operated by radio remote control. This allows total control of the sawing process and freedom to move around the workplace. Power and control enable the WS 482 HF to handle many different applications.

HUSQVARNA CONSTRUCTION PRODUCTS 17400 West 119th Street • Olathe, Kansas 66061 • T 800-288-5040 • F 800-825-0028 • 2077 Bond Street • North Bay, Ontario P1B 8J8 • T 800-461-9589 • F 800-825-0028 • Copyright © 2013 Husqvarna AB (publ.). All rights reserved. Husqvarna is a registered trademark of Husqvarna AB (publ.).

June '13 Concrete Openings  

Official magazine of CSDA. Latest job stories, business articles and industry news. June 2013 issue.

June '13 Concrete Openings  

Official magazine of CSDA. Latest job stories, business articles and industry news. June 2013 issue.