Jul y 2013
SIMPLY GRAND The hidden strengths of a magical mansion at Finisterre on Florida’s Grand Lagoon concretehomesmagazine.com $4. 9 5 Jully 2013
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concretemonthly.com
Inside:
CFA 2013 AWARDS
Special Supplement: News from the cement and concrete industries
THIS ISN’T JUST A FLOOR
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Compatible with all traditional structural systems
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contents
12 7 THE 2013 CFA PROJECTS OF THE YEAR
7
12 SIMPLY GRAND 18 SOLVING THE COMMON PROBLEMS OF LEAKY BASEMENTS
22 GREEN BUILDING FOR HOTEL &
HOSPITALITY
22
25 BOULDERSCAPE RESTORES THE ROCK
departments 4 Design Note 6 PCA Insights 22 Low-Rise Construction
18 Below Grade 25 Concrete Monthly 28 Association News
Cover photograph by Beck Graben, Jelly Graphics, LLC
See page 25
WHEN YOU’RE READY TO BUILD WE’RE AT YOUR SERVICE
Vol. 16, No. 4 President/Editor In Chief Gary L. Pittman Editorial Director Brona Stockton Managing Editor Sherry Boyd (303) 476-1336 Contributing Writers Jim Baty Doug Herbert Chad Corley Eldon Howe Contributing Photographers Brian Denton Beck Graben Art Director Lisa Gouveia Advertising Executive Dennis Carter (512) 637-0371 Circulation Manager Beth Chorba (512) 637-0344 Accounting Manager Beth Chorba (512) 637-0344
A unique program created exclusively for Concrete Homes + Low-Rise Construction readers, Concrete Concierge is a complementary service offering direct access to the country’s finest building systems, home design and build firms. Our team is available to assess your needs, assist you in making informed choices and facilitate your initial meeting.
Web and Network Manager Joel Nosal (512) 637-0322 Published by Publications and Communications, Inc. 13552 Highway 183 N, Suite A Austin, TX 78750 phone (512) 250-9023 • fax (512) 331-3950 Concrete Homes (ISSN 152-5547) is published bimonthly by Publications & Communications, Inc., Gary L. Pittman, President. Subscriptions are available for $22 per year, single copy price $4.95. Foreign subscriptions are available for $45 per year. Payment must accompany orders. Copyright 2013 by Publications & Communications, Inc.. All rights reserved. Reproduction in any form without written consent from the publisher is strictly prohibited. Postmaster: Send change of address to Circulation Dept., 13552 Highway 183 N, Suite A, Austin, TX 78750 (512) 250-9023.
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Concrete Homes • July 2013
From my perspective
We are delighted to receive comments from our readers. Please see the letter shown on this page from a reader whose dream home was on our cover in March 2013. This issue features the Selby Residence in Panama City Beach created by Heidi and Nathan Graben of Graben Construction. The amazing images you see on the cover and in our main feature were taken by a new talent in the world of architectural photography, their son, Beck Graben – remember that name. I want to thank Troy Gibson of Reward Wall for directing our attention to this unique custom home. Coming up soon, the 2013 CFA Summer Convention takes place July 10-13 in Santa Ana Pueblo, New Mexico. The convention theme is THE ROAD THAT LIES AHEAD, and to help contractors experienced with poured wall methods find new opportunities on that road, the association is doing something different this year. CFA is offering a one-day preconference workshop all about how contractors can take advantage of the emerging demand for above-grade residential building. (See page 5.) When I talked with Jim Baty about the Concrete Foundations Association projects of the year, I never imagined I’d see such interesting photos. All the award-winning foundations addressed significant technical challenges, and the above-grade residence designed by a commercial architect, Bobby Newman of 3 Level Design is worth a closer look. This issue also contains guidelines for Solving the Common Problems of Leaky Basements, written by Doug Herbert of Herbert Construction Co. Relevant product news can be found in the Concrete Monthly section. Concrete Homes + Low-Rise Construction promotes the benefits of sustainability and resilience that concrete construction delivers. I am always on the lookout for great photography and stories about single-family homes, as well as public, commercial, and multifamily low-rise buildings. Our Concrete Monthly section showcases unique projects, industry news and new developments in methods and materials. We rely upon industry professionals and property owners to help us find the outstanding projects we write about in each issue. Please contact me with information and ideas for consideration.
Sherry Boyd Managing Editor sherryb@pcinews.com
Dear Ms. Sherry Boyd, I want to thank you for the wonderful article about our home in West Virginia. The photo layout showcased all the great elements of our concrete home and the writer, Stacy Klemenc, expressed our ideas and concepts beautifully. Your magazine was a great resource to us during the building process and we enjoyed reading about other homeowners’ building experiences, as well. Once again, we thank you and we appreciate the opportunity you have given us. Sincerely, Kay Leslie P.S. When we were in the planning phase, your magazine gave us the pros of using concrete as a building material. Also, as a homeowner, your advertising and resource information were very helpful to us.
July 2013 • Concrete Homes
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designnote
SIMPLICITY AND UTILITY AT YOUR FINGERTIPS For Those Who Can’t Ever Get Enough of Concrete
A
clockwise from top left NEX GEN salt and pepper shaker set, Ammonite tray, mini spice stacker set, spice caddy set, simple serving tray with cleat handle, iPhone dock, and stacking coasters. Photos courtesy of Port Living Company.
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Concrete Homes • July 2013
former concrete contractor has founded a company that sells MANY appealing handcrafted concrete kitchenware, household concrete hardware and office accessories THAT ARE destined to become classics – and maybe even limited edition collectors items. “I strive to produce concrete products that are thoughtfully designed and functionally driven. I am particularly interested in crafting products that are made better by the very fact that they are composed of concrete... A great example of this would be our coasters, which absorb condensation from a wet glass thanks to the inherent porosity of concrete,” says Jordan Castro of Port Living Company. Although Jordan studied both fine art and construction project management at the Wentworth Institute of Technology in Boston, it was Fu Tung Cheng’s training through Concrete Exchange that helped him find his passion and launch a successful business venture that is getting buzz in lifestyle magazines and on the Internet. Visit: culinariumkitchenware.com and etsy.com/shop/ zeitgeistfactory#.
CFA Announces Above-Grade Concrete Homebuilding Workshop Registration is open for CFA’s Above-Grade Concrete Housing Workshop, Thursday, July 11, 2013, at the Hyatt Tamaya, Santa Ana Pueblo, New Mexico. The one-day workshop permits companies with prior experience in poured wall methods to focus on the above-grade construction opportunities for concrete contractors. “Nearly every contractor has the tools and skills to make a smooth transition into above-grade home construction with the information offered in this workshop and additional CFA resources,” says Jim Baty, technical director of the Concrete Foundations Association. “Above-grade residential building is a hot topic and the demand is increasing. Property owners want to reduce energy costs and improve resilience. We see the stories about hurricanes, tornados, wildfires and other natural disasters in the news every day, and homeowners are seeking ways to reduce the risks of damage and loss of life.” Baty says, “Contractors can offer the right solution at the right time. Concrete homes are high performance systems combining insulation and thermal mass to deliver comfortable dwellings and reduced operating costs.” The workshop leaders, Brent Anderson of BDA Associates, Brad Nesset of Thermomass and award-winning concrete contractor, Mike Hancock of Basement Contractors will share their expertise. Core topics to be covered in the July 11 Concrete Housing Workshop include maximizing thermal characteristics and performance efficiency, best practices for incorporating mechanical and electrical systems and understanding the whole building design and construction process. The $150 workshop fee for members and non-members covers the full day training from 9:00 a.m. to 5:00 p.m. July 11, 2013. Lunch is included, and technology exhibits will be open following the session. Register online at www.cfawalls. org. Or contact CFA staff at 866-CFAWALL (232-9255). The Concrete Homes workshop is presented in conjunction with the 2013 CFA Summer Convention, July 10-13, 2013 - Santa Ana Pueblo, New Mexico. The Concrete Foundations Association (CFA) is a voluntary, nonprofit association that brings together concrete contractors and professionals nationwide to improve the quality of cast-in-place concrete walls and foundations. The CFA provides promotional materials, educational seminars, and networking opportunities to its members and the industry. CFA also works on behalf of its members and the entire industry to develop support and influence code bodies. Visit cfawalls.org.
pcainsights Awards History The awards program was created in 2000 by the Portland Cement Association as part of its environment and energy strategic plan for the U.S. cement industry. Judges for the 2013 awards Program included representatives from U.S. EPA-ENERGY STAR, Wildlife Habitat Council, U.S. Geological Survey, World Wildlife Fund, and Cement Americas.
Lafarge North America in Bath, Ontario, winner for Overall Environmental Excellence. Photo courtesy Lafarge North America, Inc.
Environmental Excellence Awards Five cement plants received special recognition for their commitment to improving the environment and their communities during the 12th Annual Cement Industry Environment and Energy Awards, presented by the Portland Cement Association (PCA) at PCA’s Spring Meeting in Chicago. “Although it is one of the most highly regulated industry sectors in the North America, cement companies are consistently challenging manufacturing policies and procedures and are on the forefront of new technologies to make their plants more energy efficient and to become better stewards of the land and resources,” said Greg Scott, PCA president and CEO. “Making a quality product is not enough. These and other cement companies take extra steps to ensure their communities are excellent places to work, live and learn.” The Lafarge Bath plant that was recognized for overall environmental excellence took on projects to improve its efficiency and environmental footprint in 2012. For example, the plant reduced its specific heat consumption 2.5 percent compared to 2011 levels through improvements in energy management, process engineering, and production practices. To improve its footprint, Lafarge Bath engaged in low carbon fuel and virgin biomass research, water foot-printing 6
Concrete Homes • July 2013
studies, a legacy landfill management effort addressing cement kiln dust, and achieved a waste diversion recycling rate exceeding 60 percent in 2012. The plant used social media throughout 2012 to provide daily updates on the project’s progress and relay general information about low carbon fuels. Six categories recognized plants throughout North America: Overall Environmental Excellence: Lafarge North America Inc., Bath, Ontario Outreach: Titan America LLC/Roanoke Cement Company, Troutvale, Va. Environmental Performance: Lafarge North America Inc., Bath, Ontario Land Stewardship: CEMEX USA, Brooksville South, Brooksville, Fla. Innovation: CEMEX USA, Balcones, New Braunfels, Texas Energy Efficiency: CEMEX USA, Victorville, Calif. The annual awards honor individual cement facilities that exemplify the spirit of continuous environmental improvement and support this spirit with action. These plants went beyond government regulations and local laws to ensure that their processes and policies contributed to making their communities better places to live and work. Eighteen cement plants in North America were nominated for the awards.
Cement Facility Safety Records Recognized The Chairman’s Safety Performance Awards for outstanding safety records also were announced at PCA’s Spring. PCA honored plants in three categories designated by the number of hours employees collectively worked in 2012 for achieving superior safety records. The plants were: Texas Industries Inc., Riverside, Calif. – Less than 193,500 employee hours St. Marys Cement, Detroit, Mich. – Less than 193,500 employee hours CEMEX USA, Odessa, Texas – 193,501-255,500 employee hours CalPortland, Rillito, Ariz.—193,501255,500 employee hours Lafarge North America, Alpena, Mich. – More than 255,001 employee hours Alamo Cement Company, San Antonio, Texas – More than 255,001 employee hours This year the records of 101 portland cement plants in the United States and Canada were reviewed to determine which ones achieved the best safety records. Several of these plants had no accidents in 2012, and all the plants excelled in preventing accidents. About PCA Based in Washington, D.C., with offices in Skokie, Ill., the Portland Cement Association represents cement companies in the United States and Canada. It conducts market development, engineering, research, education, and public affairs programs. More information on PCA programs is available at cement.org.
THE 2013 CFA PROJECTS OF THE YEAR
The Above-Grade Residence Winner, a 3,758-square-foot Lake Hiawasee private residence designed by a commercial architect, was submitted by the concrete contractor, Basement Contractors of Edmond, Okla. Photography by Brian Denton.
What a difference a year makes! By Jim Baty, Technical Director, Concrete Foundations Association The 2013 class of winners for the annual Projects of the Year competition hosted by the Concrete Foundations Association is yet another sign of the strengthening economy. Receiving the largest number of entries in the history of the competition. Some of the highest quality projects ever awarded were selected by popular vote made through the Internet and at the World of Concrete. The Projects of the Year demonstrates the challenges and capabilities found in the professional cast-in-place concrete industry. Following the submittal process, all entries are viewable online. Ballots cast for all projects were compared to determine the popular vote for top project in each category and the top overall grand project, which is a true representation of the impact the projects have among cast-in-place peers and an interested public. This year’s recipients are as follows: Overall Grand Project of the Year – A California Cliff Hanger Submitted by CFA member, Ekedal Concrete, Inc., this 11,000-square-foot private residence in Laguna Beach, Calif., is a “cliff hanger.” The project started by drilling forty-seven 36-inch-diameter caissons, which went down between 40 feet and 60 feet in depth. It has a mat slab footing, ranging from 4-foot to 4-foot-6-inches thickness with three keyways The Grand Project of the Year winner is a residential basement for a five-level, concrete home, four of those levels below grade. Photos courtesy Ekedal Concrete, Inc. July 2013 • Concrete Homes
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below, each was 3-foot by 3-foot by 50-foot long. The slab consumed 560 cubic yards of concrete with a topping slab 6-inches thick. Only the four square corners existed for the foundation walls. The rest were acute and obtuse angles with intersecting interior walls at off angles. Several columns were also required between 30 feet and 40 feet in height.
Edmond, Okla., that was an architectural and construction challenge. The demands of this project were many, including tops of all walls sloping from 24 feet to 32 feet and two structural decks. The walls were built as insulated sandwich walls
and the owner asked that all electrical conduits be placed inside the concrete walls. A non-stop scaffolding system was used, due to the height of the walls, permitting a working height of up to 40 feet, as needed. An 8-foot walkway was created all the way around the house with the scaffolding. The interior focal point of the Lake Hiawasee house is a cast-in-place landing for a staircase and an internal stair support wall with cantilevered steel treads. Photos courtesy Basement Contractors of Okla. Photography by Brian Denton.
Above Grade Residence – The Oklahoma Lake Home “I think the real success for us in this home was in our ability to engineer the structure as well as build it,” states Mike Hancock, president of Basement Contractors. “While we are involved in a surprising number of homes with basements in a state where few would believe basements possible, we also have found that many of our customers see the advantages of the above-grade concrete home for durability and security.” Receiving the top recognition for above grade concrete homes this year is a sophisticated 3,758-square-foot Lake Hiawasee private residence by Basement Contractors of 8
Concrete Homes • July 2013
Single Family Residence, 2,000 - 5,000 square feet – A Jigsaw in Marietta While the typical mid-size residence is often regular in its geometry and has relatively plain structural conditions, this is not so for this year’s category winner – a private residence in Marietta, Georgia by Herbert Construction Company. The engineer for the complex project specified five different footing sizes, which ranged from 10-inch by 20-inch to 16-inch by 48-inch. Each footing was heavily reinforced and included lugs 130-feet long, 16-inches deep by 14-inches wide that extended below the footing for sliding restraint. Due to poor soil conditions, fifty piers were drilled prior to placing rebar and concrete in the footing. The design called for 119 vertical feet of angled corner, as well as a section of curved wall. The most complex walls were the 17-foot and 18-foot tall walls
with double matt #5 rebar at 12-inches on center in each direction. These walls sat on footings containing eight #5 continuous rebar and #5 cross bars at 12-inches on center, as well as #5 L-dowels at 11-inches on center at each face of the wall. Under these footings, the lug was 16-inches by 14-inches with two #4 continuous rebars and #4 vertical lug bars at 18-inches on center. Single Family Residence < 2,000 square feet – The Sanctuary, Lot 120 Proving that small projects often are many times as challenging as monster foundations, this private residence in Charlotte, N. C., completed by Doggett Concrete, Inc., also of Charlotte, has a 1,200-square-foot cast-in-place basement, combined with a 2,500-square-foot concrete masonry crawl space. Footings for the crawl space and basement were 24-inches to 30-inches deep and 36-inches wide – far greater than the standard footing required for most soil conditions. The footings for the safe room were constructed with doubled dowels to tie into the double mat rebar, required in the walls. The double mat steel allowed ledges to carry the 8-inch thick concrete lid that doubled as the floor for an indoor firing range above. (See photo on page 10.) Seven continuous vertical steps in the footing and a total of twenty-one wall heights resulted in an award-winning residential basement that looks like a jigsaw puzzle. Photos courtesy Herbert Construction Co.
The award-winning basement at The Sanctuary was part cast-in place and part concrete masonry and provided a spacious, 1,000 square foot safe room for the homeowners. Photo courtesy Doggett Concrete, Inc.
Sitting on a half-acre site 150 feet above a river, the 12,600-square-foot Clifton Pointe in Lakewood, Ohio, is a three building, seventeen-unit development. The award-winning foundation has 25 different elevations. Photos courtesy Modern Poured Walls. 10
Concrete Homes • July 2013
Commercial / Multi-Family – Clifton Pointe The final project of the year recipient for 2013 is Modern Pored Walls, Inc., in the category for commercial or multifamily structure. The challenge of this project included twenty-five different elevations with footing widths ranging from 4-feet to 12-feet wide. Continuous #7 bars were required in all footings. Built into the side of a cliff, some walls were required to be 17-feet tall and at each end of the building a 17-foot tall fireplace was cast. While digging foundations, the engineer decided the original design would not work and the entire structure changed during excavation. The project required large mats of steel and fourteen different concrete placements by pump. In all, more than 2,000 man-hours were logged on the project for the scope of excavation, foundations, flatwork and spoils removal. The Future With the residential economy moving strongly forward in 2013, there is a renewed sense of optimism and excitement about what will be seen once the calendar has turned to 2014. The latest structural challenges, technological applica-
tions and quality craftsmanship will continue to be expressed and recognized through the annual Projects of the Year competition hosted by the Concrete Foundations Association. CFA’s mission is to support the cast-in-place contractor as the voice and recognized authority for the residential concrete industry. Read more about these projects including the compiled statistics and the many other fine projects from previous years at cfawalls.org. James R. Baty II (@JBatyIA) is
Technical Director for the Concrete Foundations Association and the Tilt-Up Concrete Association. He is the chair of the ACI 332 Committee for Residential Concrete and secretary for ACI 551 Committee on TiltUp Concrete. Jim regularly provides guidance and technical solutions to designers, owners and contractors. He has authored articles in multiple domestic and international concrete publications and is a regular presenter during the World of Concrete.
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July 2013 • Concrete Homes
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SIMPLY GRAND The hidden strengths of a magical mansion at Finisterre on Florida’s Grand Lagoon Dramatic lighting accents the Sylvester Palms in four stone planters bordering the crystal-clear pool outside the indoor and outdoor areas created for poolside entertaining and relaxation. 12
Concrete Homes • July 2013
Visitors
to the site of the Selby residence say it is the
most spectacular location at “Finisterre”, which means the end of land in Italian. The Photography by Beck Graben, Courtesy of GRABEN CONSTRUCTION
Text by SHERRY BOYD
home is centered on two lots backed up to Grand Lagoon. Dotted by tall palm trees, the tropical landscaping surrounding the home adds to a sense of seclusion and serenity. July 2013 • Concrete Homes
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above Dramatic Foyer and formal Dining Room feature Corinthian precast stone columns, 48” Brescia marble flooring with red and green onyx and giallo reale marble floor borders and floor medallion. A Tribeca fountain and marble wall compliment the gallery hall. opposite page, top Spacious Leisure Room featuring floor-to-ceiling disappearing glass doors opens out to the Mediterranean pool, Solana Kitchen and Lanai area surrounded by Tuscan precast stone columns. opposite page, bottom Solana Kitchen and Lanai overlooking the Grand Lagoon and Mediterranean Pool features two gas grills, a full kitchen, and a comfortable sitting area surrounding a television hidden behind cyprus wood doors and a precast stone fireplace. Recessed cypress wood ceiling is illuminated by ambient rope lighting which compliments the additional lighting features.
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Concrete Homes • July 2013
During five years of planning, great care was taken to assure the best views of the landscaping features, sparkling water, Shell Island and Bay Point Marina can be enjoyed from the large windows and many private balconies around the complex. Precast concrete details, columns, and balustrades poetically complement the custom scrolled ironwork and gates throughout the property. Inside and outside this spellbinding property every detail has been carefully considered and masterfully completed by Graben Construction, working very closely with the homeowners. Heidi and Nathan Graben build homes that surpass standards and exceed client expectations. Since 1983, the Grabens have reinterpreted Florida’s vernacular Mediterranean architectural style through a creative collaboration that is nothing less than alchemy. Heidi and Nathan have collaborated on each decision made in every home they have built for thirty years. At each step in the building process, each home is customized to express the personal tastes of the homeowners in the architectural character and interior and exterior finishes, colors and materials selections of the finest quality. The 15,400-square-foot Selby Residence at Finisterre provides a superb study of the style and grace the Grabens bring to each project. The home is comprised of four separate buildings. Alongside the main building the guesthouse, a detached garage with second-story studio, and a recently added three-story carriage house are skillfully situated to achieve privacy and unobstructed views. The dynamic duo behind Graben Construction succeeded in merging conflicting requirements that might at first seem impossible. Their clients sought a home that would be warm and inviting, yet simultaneously awe-inspiring. It would be built with the finest materials available, but at the same time must provide a lifestyle of ease, comfort and simplicity. The property owners required an open feeling in the spacious buildings, while wanting extended family members to find privacy in individualized areas decorated to suit different personal preferences. Each area would have different color schemes and details, but it must all flow together seamlessly to appear as one unified style. Most importantly, the Selby’s dream home had to be built to safely withstand the extremes of wind and weather in the Gulf Coast hurricane belt without looking like the fortress it actually is. Although Florida has some of the most stringent building codes in the USA, the Selby Residence greatly exceeds these codes. Graben Construction built for superior strength and hurricane-resistance. In addition to Anderson hurricaneresistant windows and doors, all exterior walls are constructed from Reward Wall insulated concrete forms of 9.25-inch thickness with a 5.5-inch core filled with 4000 psi concrete and reinforced with 12½ tons of heavy steel rebar, positioned every 12-inches on center. The superior insulat-
July 2013 • Concrete Homes
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For the waterfront location Graben Construction built upon a deep concrete masonry foundation.
ing properties of the concrete and EPS blocks also provides an R-35 value to contribute to excellent operational efficiency and energy cost savings. Because of the waterfront location, the supporting foundation is built up 13 feet above water level using 12-inch thick concrete masonry blocks starting 7 feet below grade. Nathan Graben remarked, “In the 15 years we have been building with this method, we have never had any problems with settling or cracks. The ICF construction method far outweighs any alternative for achieving superior strength.” He continued, “It’s all the additional things we do, such as the extra hurricane straps above the code requirements, that make the house considerably stronger.” To achieve superior wind-resistance the roof trusses were built with 2x8 members and 2x10 fascia, steel posts and the ¾-inch roof decking was glued to the trusses. The concrete roof tiles were secured to the heavy-duty underlayment and decking using stainless steel screws, and leading rows of roof tiles were glued for additional safety. Graben Construction worked closely with ICF installer and concrete contractor, Gary Wiebers of Concrete Advantage. Wiebers reported that Reward Wall’s reversible ICF form saved time and reduced waste during this project. Due 16
Concrete Homes • July 2013
Experienced ICF specialist installer, Concrete Advantage used Reward Wall’s reversible ICF form to save time and reduce waste during construction.
to frequent afternoon thunderstorms and zoning restrictions on construction hours permitted in Finisterre, the workday often was cut short. The crew was able to make up time and stay on schedule due to the construction efficiency with the versatile forms. Weibers became a certified installer in 1999 after taking training offered by Reward Wall. When he became interested in ICF construction Weibers considered many options and decided the Reward Wall system was best suited to his projects because of the strong tie clips, which reduced blowouts. This was particularly important when constructing the 14-foot high first floor exterior walls of the Selby Residence. In addition to superior structural strength and dramatic visual appeal, the Selby residence has other hidden strengths. It has been built to superior environmental standards. The insulating concrete forms are produced from recycled materials and the materials and finishes throughout the home reduce the potential for any mold and allergens. No detail has been overlooked in the home design and building. From hidden storage spaces and state-of-the art-electronics to energy efficiency and sustainability, Nathan and Heidi Graben of Graben Construction have shaped the dream home Mike and Tomi Selby had long imagined.
The ICF home is prepped for concrete tile roofing installation. The upgraded 2 x 8 roof trusses are covered with 3/4” roof decking screwed and glued to the trusses. Photography Beck Graben.
The Selby’s spend time at their Finisterre home to relax, entertain, and pursue all their hobbies: fishing, diving, and all types of water activities. It affords the perfect location because of quick and easy access to Shell Island for recreation, followed by relaxation in the local cafes and restaurants. Tomi Selby has said that the Grabens exceeded all their expectations by crafting a place so exactly suited to what they imagined. Although this is one of many homes owned by Mike and Tomi Selby, it beckons to them to return frequently and spend more time each year enjoying the safety and beauty of their enchanting dream home with their extended family. TEAM Architect: C Dennis Evans, Panama City, Fla. Builder and General Contractor: Graben Construction, Panama City Beach, Fla. ICF Builder: Concrete Advantage, Panama City Beach, Fla. ICF System: Reward Wall Systems Unique views await visitors at every turn. July 2013 • Concrete Homes
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belowgrade
SOLVING THE COMMON PROBLEMS OF
LEAKY BASEMENTS IN
Text by DOUG HERBERT
a home there are few things that are more frustrating than a leaky basement. Nail pops in the drywall? No problem. HVAC unit stop working? It’ll cost you, but you can get a new unit. Roof leaks? It may take a few thunderstorms to isolate the leak, but you can get it stopped. However, water coming into the basement can be a completely different animal. Finding and fixing the problem can sometimes mean digging up the flowerbeds and bushes, or tearing out a decorative patio to get down to the problem. That can be very expensive and time-consuming. Nobody wins in these difficult situations. Those complicated scenarios, though, do not represent most of the water problems that are associated with basement foundations. Often, water issues have little to do with the actual waterproofing that was applied to the concrete wall.
For waterproofing to be effective, it needs to work as a complete system. That system is comprised of three things: Water drainage at footing and slab elevation (French drain) – A drain tile, strip drain or integrated footing form with drain, such as Certainteed’s Form-A-Drain, is needed next to the footing. This collects the surrounding water and directs it to an interior sump pit or to open drainage at a daylighted area. Membrane applied to concrete wall – The most common product is spray-applied elastomeric waterproofing. An additional drainage board or material can be installed over the waterproofing to improve drainage down to the drain tile and protect the waterproofing material during backfilling of the basement. Water management at finish grade and above – This is where most problems occur, and we will focus on this area.
above The majority of waterproofing problems occur above the waterproofing that was applied to the wall. Photo Courtesy Herbert Construction Co. 18
Concrete Homes • July 2013
belowgrade TROUBLESHOOTING GUIDE FOR BASEMENT WATER ISSUES These four items are some of most common problem areas that allow water to come into the basement. If you have water coming into your basement foundation, start here. Evaluate your situation against each of the following items. And, before you have a water problem with your basement foundation, incorporate these items into your building process. Ensure that each Trade contractor that is involved in this part of your home follows these guidelines.
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1. Slope Finished Grade to Standard
The Concrete Foundations Association of North America publishes the CFA Standard for foundation construction. CFA specifies that the grade must slope away from the foundation; specifically it has to have a slope of 6 inches within the first 10 feet out from the foundation. Without proper slope, rainwater can pool on the surface, and then work its way down through the backfill to accumulate next to the concrete wall and footing. When it isn’t removed efficiently by the drain-tile, it will find its way into the basement. To prevent this, ensure that the grade slopes away from the basement foundation on all sides of the home. 2. Keep Finished Grade Below Waterproofing
It is important to keep the finished grade below the waterproofing. If a grading contractor backfills the soil above the line of waterproofing, water can enter the basement through a shrinkage crack that isn’t covered by the waterproofing. Water entering through the outside will often reveal itself on the inside a few feet below the entry point. You may think that it is coming through the outside of the wall at the same point you see it inside the basement, but due to gravity this is often untrue. The finish grading isn’t the only area to watch out for. Sometimes, another couple of inches of
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July 2013 • Concrete Homes
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belowgrade
The polymer-enhanced asphalt waterproofing products in use today are very effective at stopping water from entering the basement. Photo Courtesy Herbert Construction Co.
Some drainage board products such as Tremco’s Warm-N-Dri board can add an R-value of 10 to the concrete wall. Photo Courtesy Herbert Construction Co..
topsoil get added over the grading. Also, during landscaping, mulch might be added. This all adds up to a foot or more of soil above the line of waterproofing, which increases the risk of water problems in the untreated area of the concrete wall. Be sure that you can see a small amount of waterproofing on the basement wall after the final landscaping is finished.
it gets as high as the sill plate on top of the wall, it will leak under the plate and come in over the concrete wall. Proper flashing in this area is critical. Water doesn’t always reveal itself at the same location where it is coming in. It may travel along the top of the concrete wall until it finds a shrinkage crack and then come into the basement a few feet down from the top of the wall. If your house has brick on it, be sure that weeps have been installed and they are above the finished grade. This will prevent many water problems. Sufficient attention given to these four areas will be likely to cover 90% of the water issues you have with a basement foundation. When you address each of these areas, you will be well on your way towards preventing a lot of headaches, frustration, and angry homeowners.
3. Address Backfill Settlement
When the basement foundation is backfilled without compaction of the soil, the soil adjacent to the basement wall will settle over time. This will leave a depression in the soil, causing water to collect next to the wall. When water is allowed to accumulate next to the wall, it will find a way into the basement. Evaluate the soil for settlement during the construction of the home. Before the landscaping is finished, be sure to fill in any depressions in the soil. Teach homeowners to watch for further settling of the soil and to fill in the depression before it creates a problem. 4. Install Weep Holes In Brick at the Correct Height
Most people assume that a brick or stone façade is watertight. The fact is that in a heavy thunderstorm rainwater penetrates through the façade and gets into the airspace between the brick and framing. The water travels down to the basement wall’s brick ledge and is intended to escape through weep holes in the brick. Oftentimes those weep holes have not been installed. Or, they have been installed too low and the backfilled soil covers them up. This will cause water to build up within the airspace between brick and framing. If 20
Concrete Homes • July 2013
Doug Herbert is a twenty-four year veteran of the concrete industry. He is President of Herbert Construction Co., which constructs concrete homes, residential basements and commercial foundations throughout the Southeast from its headquarters in Atlanta. Doug serves on the board of directors of the Concrete Foundations Association of North America (CFA), and is a CFA Certified Concrete Technician. He has been a Certified Instructor with the National Association of Home Builders. He is a frequent presenter for the CFA and a World of Concrete speaker. Herbert Construction Co. is winner of the CFA’s Project of the Year for Basement Foundations in 2013 and 2012, and the 2011 winner of the CFA’s Project of the Year for Concrete Homes. For more information, visit HerbertConstruction.com.
July 2013 • Concrete Homes
21
low-riseconstruction
GREEN BUILDING FOR HOTEL & HOSPITALITY
Introduction by SHERRY BOYD
IN
Peekskill New York, a 5-story, 76-room Holiday Inn Express is being built to LEED standards for completion summer 2013. The 62,000-squarefoot building has been carefully designed to attain maximum LEED points for heat island effect reduction, storm water management, water efficiency, indoor air quality, recycled materials and optimized energy performance. The building envelope is ICF contruction. To provide quiet rooms, all the internal walls are ICF construction, also. A white, light-reflective Duro-Last roof provides added energy efficiency and environmental benefits. George Liaskos, the building owner, decided to use ICF construction after careful consideration. Liaskos found information in magazines and by attending the International Builders Show several times before contacting manufacturers
for more information. He says that after exhaustive research, he was certain ICF offered the most energy efficient method to operate the building, and he expects to reduce operating costs by 50%. Liaskos calculates that he also will save $18,000 per year from installing LED lighting with motion sensors. Reducing operational expenses has been his main focus. As so often happens, it wasn’t easy to find a local crew with the experience needed for ICF construction. George Liaskos hired Eldon Howe, a commercial level D trainer/consultant, to train and supervise the crew for the 5-story ICF hotel construction. This reduced the hurdles and learning curves of ICF for a crew with construction industry experience, but no prior ICF experience. Eldon observed, “When you consider that all the hotel walls are ICF as well, and with only two weeks allowed per level, concrete floors included, that’s just a lot to ask of a green crew.” Due to the commitment of the project team onsite, it has all come together like clockwork.”.
above The ICF construction of the Peekskill Holiday Inn will provide sound attenuation and energy cost savings. 22
Concrete Homes • July 2013
low-riseconstruction Lessons learned during ICF construction in Peekskill, New York By ELDON HOWE of HOWE CONSTRUCTION Photography by Andrew Stein Videography CONSTRUCTION EFFICIENCIES The use of ring steel engineering allows for fewer but larger bars. The vertical bars as big as #8 are grouped together around openings and ends of all walls. Horizontal bars, might be as few as 3 or 4 bars per wall. This is not only a stronger structural arrangement than the typical 12-inch to 16-inch on center spacing usually seen, but is much faster to build as well. The IntegraSpec ICF forms can be stacked all the way to the top of the wall or window header before any horizontal steel is placed. Another time and cost saver, is that the large #8 vertical bar can be stood up and tied to the footing dowels before ICF Panels are installed. This eliminates the standard practice of lifting and dropping the full height bars down the inside of the ICF wall, while working on top of the ICF bracing. In the case of the Peekskill Hotel, 20-foot #8 bars were stood up and travel from the first floor to the top of the second floor. This eliminates the extra labor of splicing the bars between floors. Not to mention that a splice with an overlap of 40 inches or more is costly. These bars are also used to support handrails. A side benefit of pre-tying the vertical bars, is that the bar acts as “temporary” wind bracing. ICF walls are quickly built full height before bracing is installed. This was a big benefit with the 40 mph and even up to 60 mph winter
wind gusts coming directly off the Hudson River. (Although it is advisable to brace as needed.) WINTER WISE BUILD-THROUGH Whereas many ICF projects use wood or vinyl for door and window bucks, it is not the only choice. The disadvantages of this type of bucking are drilling holes in the pressure treated wood, so anchor bolts can be cast into the concrete. Additional lumber for shoring and extra ICF bracing are added in the middle of windows. All this lumber and bracing must be purchased, installed and removed. If aluminum storefront glass is used, additional lumber must be sistered to the pressure treated wood buck, because pressure treated wood is corrosive to the aluminum. The Peekskill hotel takes a different approach to ICF construction. It used an ICF buck for window and door bucking. EPS panels with dovetail edges are simply inserted into the ICF form, providing a fully insulated opening with 15/8 -inch furring strips. To simplify and speed construction, the buildthrough method is used. ICF panels with webs are stacked through openings and bucks inserted as the wall progresses up to the header height. Using a table saw, a horizontal 2½ inch slot is cut in both the inner and outer ICF panels. Then
As with all ICF projects the footprint of the building is sized in scale to the ICF being used. This greatly speeds construction time and reduces waste – a big requirement of LEED.
July 2013 • Concrete Homes
23
low-riseconstruction
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NO WASTED WOOD TO FILL LANDFILLS The opening is cut out after the pour. Nearly all of the ICF panels in the openings are reused. Only 3.5 square feet get lost to waste in this 5-foot by 7-foot-7-inch opening. Most ICF forms cost around $3.50 per square foot and that’s only $12.25 for shoring cost of this window opening. A buildthrough section can simply be removed and used as a unit elsewhere. Beyond simplifying the window and door openings, the ICF build-through is also left in place for winter heating until concrete floor slabs have sufficiently cured. Eldon Howe of Howe Construction became a licensed Residen-
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tial Builder in 1978, specializing in concrete construction. His First ICF was built in 1991 as a spec house with high R-value windows and radiant heat. In the following years ICF construction became a more significant part of his business after 2002. Since then, Eldon has become a sought after commercial, level D trainer/consultant.
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a standard panel is trimmed to match the 11-inch wall width and inserted into the slot. ICF Panels are then stacked to full height of wall. Walls remain straighter during concrete placement, mainly because of full support of the header panel by the ICF below it. No additional shoring or bracing is needed.
Concrete Homes • July 2013
News from the cement and concrete industries
July 2013
BOULDERSCAPE RESTORES THE ROCK
QUIKRETE® Shotcrete gives Alcatraz Island a facelift. By Chad Corley of the Quikrete Companies. During a challenging restoration project on the National Historic Landmark known as “The Rock,” Boulderscape, a premier design architect that specializes in shotcrete applications, used QUIKRETE ® Shotcrete MS – Fiber Reinforced and QUIKRETE® Shotcrete MS to successfully repair and stabilize a failing slope on the 22-acre Alcatraz Island. The company also installed spe-
cial planter pockets at the highest elevation to promote growth of vegetation. In addition to facing dangerous application conditions, a condensed six-week shotcrete schedule was required to avoid disruptions to regular tour operations while considering the habitat and migration patterns of local seabirds. The timing was crucial for the San Juan Capistrano, California contractor, who had agreed to complete the work during winter months before the return of the gulls in February. Much of the work
took place at night to avoid high winds that blew by day. “Navigating a variety of unique factors made this a very fulfilling project for everyone,” said Steve Jimenez, senior vice president commercial sales for Boulderscape. “We couldn’t start until the indigenous birds migrated from the island in November and we had to complete our portion of the work before the birds returned in February, which BOULDERSCAPE continued on page 26 July 2013 • Concrete Monthly
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Concrete Monthly
concreteMONTHLY
Concrete Monthly
BOULDERSCAPE continued from page 25
meant everything had to be expedited starting with the delivery of material. Beyond the challenging schedule, the application process was full of danger. The nozzlemen had to be hoisted more than 60 feet in lifts to spray apply the shotcrete before sculptors repelled down the cliff to shape the material. The end result was a structurally sound slope that matched the surrounding environment.” Safety measures were a top priority to ensure safety of the eight-man crew. A Safety Fall Protection Plan was specially written for this project. Critical issues of the hazards were addressed, such as fall arrest and restraint methods and maintenance for all climbing gear and machinery. Anchor points had to be determined and all wear areas needed to be covered and protected. In one weekend, 131 3,000-pound bulk bags of QUIKRETE® Shotcrete MS – Fiber Reinforced and 126 3,000-pound
26
Concrete Monthly • July 2013
bulk bags of QUIKRETE® Shotcrete MS were delivered to Alcatraz Island for the project. QUIKRETE® delivered 16 truckloads of material to Pier 50 in San Francisco before being shipped on two barges to Pier 33 on Alcatraz Island where it was offloaded at night by crane one-by-one before finally being transported to the jobsite on trailers pulled by four-wheel all-terrain vehicles. In all, a total of 810,00 pounds of materials had to be delivered to site. In addition to the work performed by Boulderscape, AIS Construction was the drilling contractor. The project was overseen by the San Francisco office of Wiss Janney Elster Associates, along with T.L. Peterson, Inc., as general engineering contractor. QUIKRETE® Shotcrete MS – Fiber Reinforced is a single component Micro Silica enhanced repair and restoration material that achieves more than 9,000 PSI at 28 days, and features very low rebound and permeability charac-
teristics. The QUIKRETE® Companies offers a full line of shotcrete products that can be applied through a wet or dry process to deliver high strength, high adhesion, low rebound and low sag in rehabilitating bridges, tunnels, parking garages, ramps, piers, dams and other concrete structures. QUIKRETE® shotcrete has been used on many unique and high-profile renovation and restoration projects including the Galveston Pleasure Pier in Texas, the Stanford Linear Accelerator in California, the Spokane River in Washington, and the Dennis Edward Tunnel in Oregon. The QUIKRETE ® Companies are leading manufacturers of packaged cement mixes for the construction and home improvement markets. For more information on QUIKRETE® and its products, visit quikrete.com, like it on Facebook and follow it on Twitter @QUIKRETE. CM Photos courtesy Boulderscape.
industrynews
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Concrete Monthly
Tornado-Proofing Houses Now Online A website about building disaster-resistant homes is available at tornadoproofhouses.com. Updated in 2013, it now provides “how to” information about building reinforced concrete shells capable of resisting the destructive forces of earthquakes, hurricanes and tornadoes. The disaster-resistant houses covered are built with reinforced concrete following conventional concrete design and construction practices as outlined by ACI-318 Building Code Requirements. In Japan, where this structural concept has been quite successful for earthquake design, the concept is known as “box moment frame”. The website links to an article about “disaster-resistant shell” houses constructed with reinforced concrete. It provides resources about disaster-prone locations in the world where for fifty years such houses have successfully survived a significant number of earthquakes and very high wind velocities without structural damage. Two senior structural engineers, Joseph Warnes and Kenneth Luttrell, undertook several years of research and study to gather substantive content about designing and constructing reinforced concrete houses to withstand nature’s destructive forces reliably. CM
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Concrete Monthly
associationnews TCA Releases New Publication: Engineering Tilt-Up The Tilt-Up Concrete Association (TCA) has announced the release of Engineering Tilt-Up. The newest publication from the TCA is the third in a trilogy of resources covering the architecture, engineering and construction of tilt-up. Engineering Tilt-Up contains basic engineering principles and code interpretation as well as in depth analysis of a tilt-up structure and its components. The thorough guide breaks down tilt-up design to educate beginners as well as experienced engineers. Authored by Timothy W. Mays, Ph.D., P.E. and Joseph J. Steinbicker, P.E., S.E., Engineering Tilt-Up contains 335 pages of completely new content. According to Mays, Associate Professor of Civil Engineering at The Citadel in Charleston, S.C., “The organization of the chapters making up the main body of the text are ideal for engineers just beginning with tilt-up or for seasoned tilt-up engineers looking for excellent example problems that focus on the latest codes and standards such as the 2012 IBC and ASCE/SEI 7-10.” In addition to the chapter material, Engineering Tilt-Up features three, fullbuilding design examples presenting simplified standard practice approaches to design on realistic yet complex situations and constraints that are considered on actual projects. “Adhering to the latest codes and standards, the book serves as a one-of-a-kind resource for tilt-up engineers looking for an excellent summary of standard practice in tilt-up and alternative ways to seek code compliance,” said Mays. Matthew Bell, P.E., who chaired the review task force of the TCA Technical Committee, also believes this resource fills a void in the education of the tilt-up industry. “There is currently no technical resource that educates engineers on a full-scope basis. We have the ACI 551 design guide for wall panel design, but nothing to educate on building shell analysis and how that trickles all the way down to the foundation design.” 28
Concrete Monthly • July 2013
Engineering Tilt-Up is available in both printed and digital form at tilt-up. org/resources.
CI YOUNG MEMBER AWARD A FOR PROF.ACHIEVEMENT – Scott R. Cumming, John T.Kevern, Kyle A. Riding
ACI Honored Outstanding Industry Contributions During the ACI Spring 2013 Convention Opening Session and Awards Program, the American Concrete Institute (ACI) recognized over 100 professionals, groups, and companies for their outstanding contributions and dedication to ACI and the concrete industry. Awards were presented at the at the Minneapolis Convention Center. ACI’s highest honor recognizes persons of eminence in the field of the Institute’s interest, or one who has performed extraordinary meritorious service to the Institute. The following five individuals were inducted as Honorary Members: Kenneth B Bondy, Allen Face, Per Fidjestol, Anthony E. Fiorato and Ward R. Malisch. The evening concluded with the presentation 21 medals and awards that recognize exemplary achievement, groundbreaking research, and service to ACI and the concrete industry:
ASON MEDAL FOR MOST W MERITORIOUS PAPER – W. Calvin McCall
RTHUR R. ANDERSON MEDAL A – Charles K. Nmai OGER H. CORBETTA CONR CRETE CONSTRUCTOR AWARD – Dean A. Browning J OE W. KELLY AWARD – Paul J. Tikalsky ENRY L. KENNEDY AWARD – H Thomas Otto Malerk LFRED E. LINDAU AWARD – A William F. Baker ENRY C. TURNER MEDAL – H Colin L. Lobo HARLES S. WHITNEY MEDAL – C ADAPT Corporation EDRIC WILLSON LIGHTWEIGHT C AGGREGATE CONCRETE AWARD – George Michael Robinson CI CERTIFICATION AWARD – A Keith Foster, Wally Rooke, Bruce A. Suprenant
CI CONSTRUCTION AWARD – A Jeffrey St. John ASON MEDAL – Alessandro P. W Fantilli, Hirozo Mihashi, Paolo Vallini, Bernardino M. Chiaia HESTER PAUL SIESS AWARD C – Jason Barrington, David Dickson, Luke A. Bisby, Tim Stratford CI DESIGN AWARD – José Riobóo A Martín ELMAR L. BLOEM DISTIND GUISHED SERVICE AWARD – Neven Krstulovic-Opara, Kimberly E. Kurtis, Diane Throop HAPTER ACTIVITIES AWARD C – Thomas J. Grisinger, Anthony I. Johnson, Bartley William Kanters, Ephraim Senbetta ALTER P. MOORE, JR. FACW ULTY ACHIEVEMENT AWARD – Zachary C. Grasley HAPTER AWARDS – C TIONS OF EXCELLENCE
CITA-
CI AWARD FOR UNIVERSITY A STUDENT ACTIVITIES E DUCATIONAL ACTIVITIES COMMITTEE SPEAKER OF THE YEAR AWARD – Robert J. Frosch ACI also inducted new 50-Year Members, and recognized these 40 individuals for maintaining their membership and participating in ACI activities for at least five decades. Next, ACI honored 36 Fellows for their outstanding contributions to the production or use of concrete materials, products and structures in the areas of education, research, development, design, construction or management. CM READ MORE: aciconvention.org
productnews
Keep Basements Dry & Healthy with Platon Waterproofing Membrane Platon® Waterproofing Membrane provides superior moisture protection for all types of foundation applications. It is a durable, environmentally responsible HDPE membrane with unique double-dimpled construction. Platon keeps wet soil away from the foundation, and provides a waterproof barrier to control interior and exterior moisture. Used in residential and light commercial projects, Platon easily bridges ¼-inch foundation cracks and keeps working even if the wall shifts, cracks or settles. Platon can be installed under all weather conditions, and does not require a special crew or equipment. Installation is fast and easy thanks to Platon Speedclip and Speedstrip Fasteners. Platon can also be installed over existing basement floors to isolate floors from cold damp concrete, keeping basements healthy, warm and dry. For more information, visit: certainteed.com/Products/311508.
Invisible Tru-Block Sealer and Water Repellent Protects Porous Concrete
Offer
Walttools’ new Tru-Block sealer and water repellent is the ultimate in invisible protection. The water based hybrid silicone technology provides long-term environmental protection without a hint of presence to the eye. This is ideal where it is imperative that rock and concrete stone-scapes appear natural and free of any shine, yet the work must be preserved and protected from the elements. The ultra low VOC formula performs very well against costly RTV silicone alternatives and avoids the hassle of dealing with harsh solvent based products. Tru-Block was developed for textured or sculpted vertical decorative concrete applications and for almost any porous concrete, stone or block surface where discrete and invisible protection is needed indoors or out. The application method is by spray coat, brush or roller. Tru-Block is available in 1-gallon and 5-gallon pails. Contact 888.263.5895 or visit Walttools.com.
Insulation Solutions, Inc. has launched Nu-Age Films, a line of high performance construction films designed and manufactured utilizing prime virgin resin. At less weight
continued on page 30
Lightweight Nu-Age Films Performance Breakthroughs
PRODUCT NEWS July 2013 • Concrete Monthly
29
Concrete Monthly
than standard polyethylene sheeting, Nu-Age offers from 2 to 3 times the performance. To protect walls and ceilings better, Nu-Age’s complete resistance to oxidation eliminates the principal cause of polyethylene deterioration. Nu-Age Vapor Control Films are the future in standards, providing long-term performance in real-world conditions. Please contact Insulation Solutions for pricing and availability. Visit: insulationsolutions.com.
Concrete Monthly
productnews PRODUCT NEWS continued from page 29
Announcing the Hilti HIT- HY 200 Adhesive Anchor System Hilti Safe Set™ Technology improves reliability and productivity because no manual hole cleaning is required to obtain optimum performance. Contractors can choose the perfect adhesive for the application and jobsite conditions. It’s available in two versions with the same load performance: HIT-HY 200-R for “regular” working times and HIT-HY 200-A for “accelerated” working times. For holes that clean themselves use the new Hilti TE-CD and TE-YD Hollow Drill Bits in conjunction with the Hilti VC 20/40 vacuum. Dust is removed by the Hilti VC 20/40 Vacuum System while drilling is in progress for faster drilling and a virtually dustless working environment. No more clean-
compressed air and a wire brush to clean the drill hole. Like all Hilti adhesive anchors, HIT-HY 200 can be installed using the traditional blow-brush-blow method. Because HIT –HY 200 only requires two blows of compressed air, two brushes and two more blows of compressed air (2x2x2) when using the traditional method, it is still faster to install than other adhesives on the market that require at least a 4x4x4. The blow-brush-blow cleaning technique maximizes the application range for the HIT-HY 200. Hilti HIT-HY 200 Adhesive Anchor System installed with the Hollow drill bit method, HIT-Z or standard hole cleaning is approved by ICC-ES in the ESR 3187 for use in all seismic zones and uncracked and cracked concrete. For more information on the Hilti HIT-HY 200 Adhesive Anchor System, please contact Hilti Customer Service. From the U.S., call Hilti, Inc., at 1-800-879-8000 or visit the HY200 info page us.hilti.com/HY200; from Canada, call Hilti (Canada) Corporation at 1-800-363-4458 or visit ca.hilti.com/ HY200.
Remove Efflorescence Safely
ing after drilling means higher productivity and less cleaning errors. This new method of installation is only allowed with one adhesive in the market- Hilti HIT-HY 200. No cleaning required - The new Hilti HIT-Z, zero cleaning rod with its cone shaped helix works as a torque-controlled anchor. This means that because of their shape, HIT-Z Anchor Rods, when used with HIT-HY 200, the unique shape of the HIT-Z Anchor Rod allows it to be installed in a standard (hammer drilled, dry or water saturated concrete, above 41°F/5°C) uncleaned hole. The benefits are clear: fewer steps, less equipment and extremely high reliability in anchoring applications. The traditional blow-brush-blow method is also an option. The current industry standard installation method uses 30
Concrete Monthly • July 2013
Xfflorescence is a gelled acid product that can be used to clean and remove efflorescence off the surface of sealed concrete with no damage to the sealer or protective coating. Now, you can conveniently remove efflorescence, rust, mold, mildew, grease/oil, organic waste, as well as surface glaze or slurry mix that has attached to the sealer. Xfflorescence can be applied to sealed horizontal, vertical and overhead surfaces. It eliminates the need for messy sandblasting or dry grinding, and Xfflorescence does not produce airborne silica dust. It contains no VOCs, and is incombustible and nonvolatile. It provides consistent results and does not damage the sealer. Unlike other harsh, liquid chemical cleaners, Xfflorescence controls and contains the waste residues for easier clean up and disposal. This product is safe for indoor and outdoor use and is LEED Green Building Rating System compliant. Surface Gel Tek’s patented formulations are environmentally safe, user friendly and easy to apply by brush, roller or squeegee. On unsealed concrete surfaces refer Tek Gel™ Technical Data Sheet. They are ready to use without measuring or diluting. Visit etchingconcrete.com. CM
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concretehomesmagazine.com 32
Concrete Homes • July 2013
today to be listed in the new Builder + Business Directory 512.637.0371 dennisc@pcinews.com
UNCOVER WHAT’S NEW Get the ultimate up-close look at the future of construction. CONEXPO-CON/AGG represents an immense unveiling of all the newest equipment, technology and product breakthroughs in construction. From earthshaking big iron to groundbreaking innovations you don’t even know exist, it’s all assembled in one place to help you work smarter.
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March 4-8, 2014 | Las Vegas conVention center | Las Vegas, Usa
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