Concrete Contractor May/June 2020

Unexpected Underslab Implications

12 May/June 2020

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Building the Hard Rock Guitar Hotel

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WHAT’S INSIDE

May/June 2020 | Issue 3, Volume 21

COVER STORY 6

Building the Hard Rock Guitar Hotel A tight timeline and unique shape made this project one for the books.

DEPARTMENTS 4

Editor’s Letter

50 Last Placement

Cover Photo Credit:CEMEX USA

FEATURES 12 Underslab Insulations and Structural Implications Molded poystyrene foam has a range of applications, including as a lightweight structural fill.

16 Using Data Loggers for Optimal Concrete Curing Data loggers can monitor the concrete curing process to save time and money.

18 Parking Lot Paving: Concrete vs. Asphalt Parking lots paved with concrete could be a game changer for the industry

22 Robotic Demolition Enables Big Work in Tight Spaces Breaking Solutions operates demolition machines in tight spaces in New York.

28 Wastewater Tips: When the Stakes and pH Levels are High Robotic hydrodemolition provides fast, safe and efficient concrete removal.

30 Equipment Specification Guides: Screeds A compilation of technical information for choosing your next screed.

37 Equipment Specification Guides: Concrete Saws A compilation of technical information for choosing your next saw.

44 Building Up the Construction Industry While the industry is under pressure to complete projects faster, it’s struggling to attract young people to the field.

WHAT’S ONLINE Planning Ahead Concrete industry associations are starting to plan fall conferences and conventions.

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40 Polishing Contractor: Atomized Mist Meets Strict Standards Learn how Southwest Concrete Paving Company used atomized mist technology during airfield tarmac construction.

45 Polishing Concrete: Concrete Construction Innovation During Uncertain Times Now might be the perfect time to learn about the newest tools and technologies to increase profits and decrease project time.

5 Strategies for Hiring During a Pandemic There’s a new normal for hiring and onboarding these days. Read the five actionable tips for your hiring process.

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EDITOR’S LETTER

Concrete Construction Innovations During Uncertain Times

T

Meanwhile, Stephen hese have Knuth from T&D US undoubtedly says data loggers enable been some accurate and effective of the strangest and concrete curing. most difficult days When it comes to contemporary Americans workforce development, have ever faced. While SHEENA INGLE, EDITOR National Flooring some concrete contractors SHEENA.INGLE@ have been able to ACBUSINESSMEDIA.COM Equipment vice president Connie Johnson says keep working through improving the perception quarantines and pandemic of the concrete construction threats, others have seen projects industry is key to inspiring a new halted. generation of jobseekers to consider Whether you're working steadily contracting. At the same time, Dale or trying to figure out how to Mullikin, a national account director jump-start your business upon a for Atlas Molded Products, says return to normalcy, now might be molded polystyrene foam can solve an excellent time to learn about the a lot of common challenges with latest technologies, advancements, its high compressive strength for a innovations and expert tips that are lightweight structural fill. driving the industry forward.

Wherever your company stands at the moment, learning everything NEW TECHNOLOGIES: you can about boosting efficiency, ROBOTICS, DATA implementing best practices and LOGGERS AND MORE discovering what's new in the From robotic demolition that enables industry can only help. Even if we big work in tight spaces to high-tech are forced to set new goals in the face atomized dust suppression solutions, of adversity, together, we can all get new technological innovations boost through these tough times and look productivity, safety, efficiency and ahead to better days. advancement.

Robotic technology is allowing contractors to perform a range of tasks autonomously that previously required manual work, such as rebar tying, demolition and surveying.

Published by AC Business Media

Q

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Associate Editor Contributing Writers Senior Production Manager Art Director Audience Development Manager

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CONCRETE CONTRACTOR (USPS 021-799, ISSN 1935-1887 (print); ISSN 2471-2302 (online) is published 6 times a year: January, February/March, May/June, August/September, October/ November and December by AC Business Media, 201 N. Main Street, 5th Fl., Fort Atkinson, WI 53538. Printed in the U.S.A. Periodicals postage paid at Fort Atkinson, WI, and additional entry offices. POSTMASTER: Send address changes to Concrete Contractor, PO Box 3605 Northbrook, IL 60065-3605 May/June 2020, Issue 3, Volume 20 One year subscription to non-qualified individuals: U.S. 1 year: $35, 2 years: $70. Canada & Mexico 1 year: $60, 2 years: $105. All other countries 1 year: $85, 2 years: $160 (payable in U.S. funds drawn on U.S. banks). Single copies available (prepaid only) $10.00 each (U.S., Canada & Mexico), $15.00 each (International).

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COVER STORY

»

BY AMY WUNDERLIN

Building th

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ng the

A tight timeline and a unique shape made this project one for the books.

T

he Seminole Hard Rock Hotel & Casino in Hollywood, Florida, recently underwent a billiondollar expansion consisting of 60,000 square feet of retail and restaurant space, a 7,000 seat theater venue, 10-acre lagoon pool, and 41,000 square feet of spa space.

The main attraction, however, is the 36-story guitar shaped hotel, reaching 450 feet into the sky. The hotel broke ground in 2017 and officially opened in October of 2019.

More than 40,000 cubic yards of ready-mix concrete was delivered by Cemex for the iconic structure, which was poured by the Joint Venture team of Baker Concrete Construction and Liberty Conshor. In total, Baker has poured over 80,000 cubic yards of concrete for the expansion thus far.

“The idea behind the East Tower, or the guitar-shaped hotel, was to create an iconic landmark to represent the Hard Rock’s executive home base in Hollywood, Florida,” says RayC Southern, operations manager, South Florida at Baker Concrete Construction Inc. “After numerous design attempts, the Seminole tribe decided to proceed with the guitar-shaped structure rather than a rectangular building with a guitar design on the face. The architect firm, Klai Juba Wald, worked with Desimone Consulting Engineers on the

Photo Credit: CEMEX USA

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COVER STORY CONTINUED Superior Rigging and Erecting Co. assisted with the construction of the Hard Rock Hotel and Casino expansion using Liebherr LR 1300 SX crawler crane.

Photo Credit: LIEBHERR USA

Photo Credit: LIEBHERR USA

design, with three demands in mind: budget, schedule and hotel room count,” he adds.

In order to achieve the silhouette of a guitar, Southern explains that the structure has varying floor sizes to create the narrowing and widening of the structure.

“At each of these curves, most of the exterior columns needed to be sloped by as much as 40 degrees,” he says.

According to Bill O’Donnell, a partner and principal at Desimone, the horizontal forces from the sloping columns create significant thrust loads, which are redirected back into the floor and shear walls with additional thrust reinforcing.

Another design consideration that fulfills the hotel room count demand is the slab thicknesses.

“As the height of the hotel was limited by a nearby airport’s restrictions, that design team attempted to save inches by reducing the slab thicknesses. This was achieved by designing post tensioned slab with enough reinforcing to get the slabs between 9 and 12 inches thick,” Southern explains.

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PREPARING FOR AN UNTRADITIONAL STRUCTURE Planning, communication and collaboration between the Baker team members and other key subcontractors was imperative to the success of this project.

Southern adds that the opportunity to collaborate with strong suppliers such as Cemex allowed Baker to remain aggressive with concrete pour times, ultimately contributing to keeping the Hollywood Hard Rock Hotel ahead of schedule.

“CEMEX was honored to participate in this extremely unique project that will quickly become an icon of South Florida,” says CEMEX USA President Jaime Muguiro. “We are proud to have contributed our high-quality materials to another eye-catching structure that will be enjoyed for years to come.”

Jeff Bobolts, CEMEX USA Regional President—Florida Region, adds that CEMEX's extensive network and position in Florida is a key element in helping to fulfill the specifications for high-profile and highly-technical

projects such as the Seminole Hard Rock Hotel & Casino.

"This project had 10,000 psi columns, it had 7200 psi decks, which in some parts of the country is unique, but for us and for our team in that South Florida area, it's stuff we do every day, so we're very familiar with it. And I think we're a known quantity in that respect to our customers in that market," he explains.

Safety was also a high priority in the success of this project.

“Every morning, the Hard Rock project team and foremen would sit down and begin the day with the morning meeting. The very first thing our team talks about, regardless of what is going on in the world, is always safety on the jobsite," Southern says.

The Liebherr LR 1300 SX crawler crane was used to hoist the large 65,000-lb. steel trusses used to build the new structure.

Photo Credit: LIEBHERR USA

MAY/JUNE 2020 www.ForConstructionPros.com/Concrete

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M

COVER STORY CONTINUED Photo Credit: CEMEX USA

L B

T h o A

"After safety discussions, our production, quality and schedule goals were reviewed with the foremen. We discussed areas for improvement and set goals.

Our team makes sure everyone is on the same page and working toward the same goal, safely. We drive accountability with safety, quality and production no matter how unique the project is,” he adds.

OVERCOMING COMPLEX CHALLENGES The Hard Rock East Tower was a complex and demanding project due to its tight schedule and unique shape, Southern says.

While it consisted of conventional shear walls, post-tensioned slabs and reinforced columns, Southern says the curves created by the guitar shape required an advanced design for the sloped columns that now give the guitar its iconic silhouette.

“This design required Baker to incorporate innovative construction methods that would allow the sloped columns to remain fully supported during the construction process by using a complex system of cantilevered bracing that would span multiple floors,” he explains.

Baker was tasked with the layout and install of over 180 embeds in each floor, which Southern says required meticulous

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coordination with other trades to ensure accuracy. He adds that the building’s slab edges were also a crucial design aspect as it guided where the curtain wall system needed to hang and the location of the embeds for anchoring curtain wall panels to the structure.

“These embeds had extremely strict tolerances for each location, and out of all the 7,000 embeds placed in the project, only two embeds required rework, largely due to the iPad technology implemented by Baker,” he says, further explaining that “all drawing changes and coordination documents were controlled and evaluated by the office team and distributed to the field team in real time on their iPads. The teams diligent planning and coordination encouraged speed and efficiency in the field.”

In addition to the structural complexities, the entire Seminole Hard Rock Hotel & Casino expansion had a strict completion date in advance of the 2020 Super Bowl. Southern explains that the tight deadline required the structure’s completion to precede the arrival of the custom curtain wall coming from abroad and was further exacerbated by the delayed pour of the mat foundation and the design’s complexities.

“In order to meet the schedule other innovative strategies were utilized,

including the self-climbing form work system for the core walls,” he says. “This method utilized an elaborate hydraulic jacking system capable of hoisting the massive core wall form work without the assistance of the tower cranes. This in turn allowed greater efficiency on the project by freeing up additional tower crane hook time.”

Concrete pumping was also maximized, Southern explains, by mounting a placing boom on the selfclimbing core. This allowed the placing boom to be elevated over the form to pour the core, columns and decks from above.

“With the strategic location of the placing boom, all the decks could be reached by the boom, whether it was a 26,000 square foot floor in the widest part of the guitar or a 2,600 square foot floor at the top of the guitar.

With these techniques, Baker was able to achieve a five-day cycle despite the fluctuating floor sizes,” Southern concludes.

For more information on the Seminole Hard Rock Hotel & Casino, visit ForConstructionPros.com/ concrete/article/21116192/ building-the-hard-rock-guitarhotel.

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FLATWORK/SLAB

»

BY SEAN O’KEEFE

Underslab Insulations and Structural Implications

L

ightweight and versatile, molded polystyrene foam is a commercial building material that despite being commonly used remains somewhat misunderstood.

Frequently identified by the misnomer Styrofoam, molded polystyrene products range from lightweight structural materials and insulations used in commercial construction to packaging for medicines, electronics, and other delicate payloads to OEM applications like the hull of a jet ski, or insulation fill in RVs, and so much more.

“Molded polystyrene foam is very versatile and efficiently solves a lot of common challenges,” says Dale Mullikin, a national account director for Atlas Molded Products.

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Molded polystyrene has incredible compressive strength, making it well suited as a lightweight structural fill.

At Snowbird Ski & Summer Resort in Utah, when a new 23,000-sf guest center was built at 14,000 feet on top of Hidden Peak, molded polystyrene geofoam helped stabilize a 45-year-old mountainside tram. Designers didn’t want any loading from settling soils to be added to the tram’s foundation wall as the result of the new building.

Designers developed a structural barrier that will never erode by filling the void between the guest center’s foundation and the tram wall with Foam-Control Geofoam.

Like compressive strength, molded polystyrene’s thermal insulation

Frequently identified by the misnomer Styrofoam, molded polystyrene products have a range of applications.

Photo Credit: Sean O’Keefe

capacities are also quite exceptional.

Used as insulation, molded polystyrene rigid foam is ideal almost anywhere a high-performance building envelop is desired. At Badger State Fruit Processing, a Wisconsin Cranberry processor, Foam-Control PLUS+ molded polystyrene insulation was selected based on a combination of performance, environmental impact, and cost. Badger State’s insulation objectives were a full building envelop solution - walls, roof, foundation perimeter, and underslab

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- making it a six-sided challenge. The underslab insulation was Foam-Control PLUS+ 400. With a compressive strength of 40 psi, the stackable insulation can support the weight of the plant’s massive freezers without risk of structural collapse.

Atlas Molded Products manufactures Foam-Control Geofoam and FoamControl PLUS+ across a wide range of compressive strengths that begin at 15 pounds per square inch (psi) and scale up to 60 psi. Though structural loading is never an issue for molded polystyrene, occasionally, proving it can be. Recently a company building a large food processing facility had some questions about using Foam-Control PLUS+ insulation beneath the cold storage slabs that Mullikin had never been asked before.

The engineer's reply by email read in part: “I was forwarded your technical brochures regarding the properties of Foam-Control PLUS+ insulation. I wanted to verify if you had technical information regarding the insulation foundation modulus (equivalent modulus of subgrade reaction) for your product. We are expecting very high point loads on the slab for this project, so I’d like to have that information available for verification and future reference.”

“This was a first for me,” says Mullikin. “The term modulus of subgrade reaction wasn't something I was familiar with.”

Fortunately for Mullikin, a reliable resource was at the ready in Todd Bergstrom, Ph.D., of AFM Corporation. Bergstrom has spent the last 22 years applying his doctorate in material science and engineering from Northwestern University to researching, developing, and testing molded polystyrene against variables of every sort. From conducting water absorption testing, and quantifying structural performance to proving R-values, Bergstrom has invested his career in molded polystyrene.

“Modulus of subgrade reaction refers to the relative stiffness of the layers of support beneath a concrete slab,” says Bergstrom.

Molded polystyrene has incredible compressive strength, making it well suited as a lightweight structural fill.

Though the materials are identical, there are two separate designations within ASTM International standards, ASTM C578 for insulation and ASTM D6817 for geofoam.

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Photo Credit: Sean O’Keefe

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FLATWORK/SLAB CONTINUED

Molded polystyrene can be used as both an insulation and as a structural fill.

Photo Credit: Sean O’Keefe

Quantified, the modulus of subgrade reaction assists engineers in selecting the appropriate molded polystyrene foam to support the pressure of the loaded slab.

“In this case, the engineering proved that Foam-Control PLUS+ molded polystyrene insulation would support the same loads as a subgrade composed using XPS.” Bergstrom shares that some of the confusion surrounding molded polystyrene is that it can be used as both an insulation as in the case of Badger State Fruit Processing and a structural fill called geofoam as in the Snowbird guest center. Though the materials are identical, there are two separate designations within ASTM International standards, ASTM C578 for insulation and ASTM D6817 for geofoam.

Rigid cellular polystyrene has been used as a roof and in-wall insulation in commercial construction for more than 50 years. It was first tested and published in ASTM standards under ASTM C578 “Standard Specification

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for Rigid, Cellular Polystyrene Thermal Insulation.”

Rigid cellular polystyrene products include both extruded polystyrene and molded polystyrene materials whose practical purposes in commercial construction have grown well beyond the original thermal insulation objectives to now prominently include structural support.

“Until 2002, all rigid cellular polystyrene fell under C578 when ASTM D6817 was introduced, specifically to account for structural applications using geofoam,” says Bergstrom. “Many architects still think of these products exclusively as insulations and problematically, the original structural capacities listed in the insulation standard for XPS materials are inadequate without adjustment factors. Structural loading should always be specified using the structural capacities in ASTM D6817.”

ASTM D6817 “Standard Specification for Rigid Cellular Polystyrene

Geofoam” determines the structural capacity of rigid cellular polystyrene by compressing the material until it is deformed by only 1%. The insulation specification, ASTM C578, compresses the same material until it is deformed by 10%.

“C578 is meant to compare two types of materials against one another,” summarizes Bergstrom. “D6817, however, defines the loading capacity the material can support indefinitely when used structurally.”

While both Foam-Control Plus+ molded polystyrene and extruded polystyrene materials can support the intended structural load at the Midwestern cold storage facility, Foam-Control PLUS+ is much more efficient to build with.

Insulations made from XPS are manufactured in flat, rigid sheets just a few inches thick and must be stacked to achieve depth. FoamControl Plus+ is molded in blocks as large as 8’ x 4’ x 36”-thick.

Despite their size, these large blocks are easily moved by hand and builders can quickly and easily install large structural fill sections in tight places with only manual labor. Hot wire cutters are used to easily customize blocks to fit around pipes, columns, or other obstacles.

“Twenty-plus years of working with clients on insulations and structural solutions and they never run out of questions,” says Mullikin. “Atlas Molded Products wants to make sure owners, engineers, architects, and contractors understand the incredible capacity, resiliency, and versatility of molded polystyrene foam and we’ll do it one project at a time.”

For more information on polystyrene foam, visit ForConstructionPros. com/21116137.

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EQUIPMENT FOCUS

»

BY STEPHEN KNUTH

Use Data Loggers for Optimal

C

oncrete curing is the process of maintaining adequate moisture in concrete within a proper temperature range, in order to aid cement hydration at early stages. This process is incredibly delicate, and if handled improperly, the structural integrity and strength of dried concrete is severely compromised.

However, it is impossible to expect someone to be present during the entire three-week-or-longer curing process to measure moisture levels and temperature. This is why it’s imperative to have the right tools for the job to monitor the process in real-time, 24/7. The right tool for this job is a data logger with wireless data transmission capabilities.

In order to understand the need for data loggers, we have to understand the curing process and the factors that can disturb it. Concrete temperature, air temperature and the concrete’s dimensions have a significant influence over the hydration process. For concrete to maintain its shape and texture, these parameters must be carefully measured over time. Even small deviations from the recommended measurement guidelines can take concrete from sturdy and smooth and turn it into a cracked mess that becomes a safety hazard and liability to all.

EFFECT OF HEAT ON CONCRETE CURING Concrete curing conducted during hot days can speed up the process,

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which will lead to decreased strength over time. This is counteracted by adding water when temperatures rise.

Additionally, the larger a concrete structure, the more heat it will generate.

And as the cement is mixed with water, heat becomes trapped in the mixture and the core continues to heat while the outside cools. Keeping track of the temperature level vs. the water added is key to ensuring concrete falls within the American Concrete Institute’s guideline for 70% compressive strength.

HOW COLD IMPACTS CONCRETE CURING Cold weather can also prove detrimental to the curing process. Concrete can

experience as much as a 50% strength reduction due to freezing. This can be counteracted by using live steam, embedded heating coils, heating pads or concrete blankets. But, in order to determine the need for these strengthening agents, construction professionals need to be able to measure internal and external temperatures.

USING DATA LOGGERS FOR CONCRETE CURING The purpose of a wireless data logger is to take the human element out of the temperature measurement process.

Oftentimes, temperature is measured manually and on a set schedule. If the user forgets to measure the temperature

or is tied up with other work, then the user loses that interval of measurement.

If the concrete fell out of the specified temperature range during those times, it could be compromised and nobody would know.

Data loggers can be placed on the outside of the concrete to measure air temperature, as well as have their sensors inserted into the drying concrete to measure core temperature. The logger can then be set up to send alerts to multiple users whenever temperatures fall-out of a designated range. Therefore, even if construction staff isn’t on-site, users can be alerted in real-time to take immediate action or call a colleague close by to add more water or use a strengthening agent.

Data loggers come in multiple configurations to best suit the needs of the user. Since most construction curing locations are placed outside of Wi-Fi zones, there are data loggers equipped with Bluetooth to send data to smart devices seamlessly. By having this feature, companies remove the risk of losing their data as a result of inconsistent or nonexistent Wi-Fi. There are also mobile base stations available to connect with cellular device services at even longer ranges. Devices with these capabilities can be obtained at prices that pale in significance to that of the overall project.

When companies install data loggers during the concrete curing process, they gain the benefit of cost savings, operational efficiency and having a clear record of temperatures for quality assurance. Construction companies have everything to gain from choosing highquality loggers and everything to lose from having incorrect measurements.

Save your company the hassle and cure your concrete correctly from the start.

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CONCRETE PAVEMENT

»

BY MACKENNA MORALEZ

R C R

Parking Lot Paving: CONCRETE VS. ASPHALT

“C

oncrete is hell of an industry to be a part of,” Dylan Milis of Milis Flatwork says. “No matter what it is, the first thing anybody sees when they pull into an establishment is their parking lot. I always say ‘never judge a book by its cover,’ but first impressions are everything.”

At the National Ready-Mix conference in July, Milis was invited to speak on how concrete is a viable option to parking lot paving.

In his keynote speech, he touched on how using concrete for parking lots, overlays and new construction blocks is an efficient and cost-effective option.

“Nobody down there [the southern United States] is really using concrete for parking lots,” Millis says. “There’s an entire Northern market that somebody should grab and start doing it.”

Currently, only 8% of surface parking lots are paved with concrete.

Typically, contractors choose to pave parking lots with asphalt because of quicker installation times and lower costs. However, asphalt requires significant maintenance. Given the low number of concrete lots, that means more than 6,000 square miles of surface parking lots will need to be resurfaced within the upcoming year.

“The reason that the number is so

Typically, contractors choose to pave parking lots with asphalt because of quicker installation times and lower costs.

Photo Credit: Tim Smurf on Unsplash

small is because of the lack of people that want to do it,” Milis says. “There’s a lot of concrete work out there right now with commercial buildings, foundations, sidewalks and other residential areas.

There’s a lot of work that people haven’t really had a chance to explore because they’re busy all the time. Why even look at other markets?”

© n

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CONCRETE PAVEMENT CONTINUED CONCRETE LOTS REAP BENEFITS Parking lots paved with concrete could be a game changer within the industry, though. Milis explains that asphalt can

be competitive because of its low price point, making it seem worthwhile to replace them every 10-15 years.

Meanwhile, concrete requires less maintenance – only needing joint sealing

and an annual cleaning each year. In addition, it is better suited for warmer climates, which the South could potentially benefit from. Milis explains that asphalt tends to soften in extreme heat or the pavement can become too hot to touch. In addition, the material can lower cooling costs for adjacent buildings, as it can stay upwards of 10 degrees cooler than asphalt.

Concrete is also able to remain cool and less likely to crack in warmer weathers.

“Concrete is the way to go, I wouldn’t try to sell something if I thought it was a less superior product,” Milis says. “Concrete is such a viable option, though, because it requires virtually no maintenance. You don’t have to seal coat it or restripe it all of the time. Once you pour concrete, it’s going to be there for 40 years.”

Concrete also gives off a more polished look, reflecting light better.

This allows companies to put in less lighting, as concrete parking lots stay bright at night. Businesses are able to eliminate three of 10 light fixtures in their lots and still have the same amount of lighting, as opposed to using asphalt, potentially saving money and energy consumption. In addition, concrete has more design options and can structurally hold itself.

“It [concrete] is self-supporting, whereas asphalt relies on the base. If the base is wet, saturated or done poorly, it’s going to deteriorate faster,” Milis explains. “Concrete can support its own strength – and create its own strength.

It’s more heavy duty and it lasts longer.”

There are also challenges that asphalt has that concrete does not, Milis says.

For example, drainage, weather and soft subsoil can all play negative roles when it comes to an asphalt project.

Drainage can weaken a lot’s substructure while soft subsoil can quickly lead to cracks or potholes that will need to be filled earlier than planned.

“Concrete is the way to go, I wouldn’t try to sell something if I thought it was a less superior product,” says Dylan Milis of Milis Flatwork.

Photo Credit: Mak

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t

Meanwhile, unpredicted weather can have a drastic impact on an asphalt lay, potentially wrecking a stabilized base and creating significant delays.

“From my experience with doing parking lots, people just assume that concrete is going to be expensive. Most people know that concrete is better than asphalt, but the reason why they don’t consider it is because they have this idea that it’s super expensive,” Milis says. “We’ve been able to get that price gap a lot closer.”

Specs can also be misconstrued by engineers as well, leading people to choose asphalt over concrete because of high prices. Milis explains that oftentimes when a business owner is presented with concrete and asphalt options for a parking lot, the spec plan outlines a heavy-duty pavement project, such as a highway, for concrete, compared to a simple designed asphalt lot.

expensive. Overall, asphalt preservation can take up 80% of construction costs, while costs for concrete upkeep is nearly zero. Only some joint sealing and annual cleaning is needed.

“Without having the opportunity to talk about it, the owner of the property or the tenant is just going to walk away with the mindset that concrete is

twice as expensive. For just 15% more, you’re going to have a product that’s going to last twice as long and no maintenance. That is why the discussion is so important,” Milis explains.

For more information, visit ForConstructionPros. com/21125328 .

OPEN THE LINES OF COMMUNICATION “It’s hard to compare apples to apples when really, you’re comparing a heavyduty pavement to a light duty parking lot. Sometimes engineers don’t have the project plans backed appropriately.

They’ve been copying and pasting the same concrete detail for the last 50 years,” Milis says.

It is important to have the discussion on which material to use, as it is the face of the business, Milis explains. Concrete and asphalt are cost competitive, and most business owners are unaware of that. Simply presenting general information on the two products can make a difference.

“You have to let the owner know that it’s cost competitive and that you’re getting a better product [with concrete] that lasts longer,” Milis says. “In the long run, it’s going to cost less money to maintain.

Initial costs are going to be higher with concrete, but when you take it into consideration, you’re more or less coming in at the same, or close to the same, price.”

When comparing the costs of installation and at least two decades worth of maintenance costs for asphalt lots, concrete is considerably less

www.ForConstructionPros.com/Concrete

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CONCRETE CONTRACTOR 21 6/16/20 10:48 AM

CONCRETE TECHNOLOGY

»

BY BROKK

‹‹‹‹‹Robotic Demolition Enables

BIG WORK IN TIGHT SPACES

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s

T

he Big Apple, despite its name, is not known for extra legroom.

Apartments are small and expensive, streets and subway cars are packed, and demolition contractors are continually tasked with finding new ways to do their work in the cramped urban environment.

Some companies have found ways to adapt to and excel in the limited-space environment of New York City. New York City-based concrete breaking and rental company, Breaking Solutions, has been doing so since 1994. Unlike many demolition contractors, Breaking Solutions doesn’t often use handheld breakers or mini-excavators; they turn to remotecontrolled demolition robots instead.

The resulting safety, productivity and versatility has led them to expand the business to include more than 50 machines, complex projects and government contracts, and a successful rental and service business.

series bringing the total number of remote-controlled machines in Breaking Solutions’ fleet to 50 Brokk models, seven from Husqvarna, and the latest range of Brokk machines on order.

“I still love to get my hands on every Brokk 250 I can find,” Amorosano Sr. says. “The model is the perfect

INTRODUCING INNOVATIVE SOLUTIONS Breaking Solutions’ founder, John Amorosano Sr., bought his first remotecontrolled demolition machine in 1994.

The Brokk 250 he purchased is the most popular model in the manufacturer’s history. He operated the machine for the first time 10 years earlier while working for Break-Tech, a demolition company that helped pioneer the use of the equipment in that area.

Amorosano Sr. was a collector, though, and didn’t stop at the one machine. He regularly bought new models as they were released. Now, in the company’s second generation, his son John Amorosano Jr. continues to expand the fleet with new models.

The latest this year were the dieselpowered Brokk 120D and Brokk 500

Breaking Solutions’ founder, John Amorosano Sr., bought his first remotecontrolled demolition machine in 1994.

Photo Credit: Breaking Solutions

www.ForConstructionPros.com/Concrete

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CONCRETE CONTRACTOR 23 6/16/20 11:00 AM

CONCRETE TECHNOLOGY CONTINUED

The contractor must be able to effectively break concrete in tight spaces on a short deadline.

Photo Credit: Breaking Solutions

BUSTING INTO NEW MARKETS The remote-controlled demolition machines’ versatility, power and flexibility, along with the contractor’s large fleet of machines, attachments, skilled operators, mechanics and service trucks opened the door to success in new applications. The company has a contract with a local transit authority requiring them to be on call 24/7 with a fleet of machines and operators.

To avoid transit delays and liquidated damages, the contractor must be able to effectively break concrete in tight spaces on a short deadline.

“We’ve never missed a deadline.

Period,” Amorosano Sr. says.

A notable project was the Brooklyn Battery Tunnel rehab completed in 2017. The 1.7-mile tunnel connects Brooklyn to Manhattan and consists

24 CONCRETE CONTRACTOR CONC0620_22-27_ConcreteTech.indd 24

of two, two-lane tubes running east and west. Breaking Solutions was hired to remove concrete in several areas of the project. The contractor’s two-year portion included breaking about three miles of new trenches in the extremely hard concrete walls for fire line replacements, wall scaling for tile replacement and the removal of curbing, bench walls and other concrete. Project officials originally planned to use a mini-excavator to complete the trenches. Crews could complete about 8 to 10 feet per night with the method. Breaking Solutions had a better idea. The contractor used remote-controlled demolition machines to complete more than 200 feet per machine per night. Most nights consisted of six machines at once doing different phases for about 1,200-feet of concrete at a time. This dramatically accelerated the project schedule. In addition to the improved speed and productivity, Breaking Solutions was able to complete the work with a skeleton crew and minimal hand work.

BREAKING THE BANK The robots’ flexibility in constricted spaces resulted in a niche for the company: bank vaults. Amorosano Sr. said the vaults have become another specialty for them. The equipment’s compact size and stair-climbing abilities mean the contractor can sometimes drive the machine right in without dismantling parts of the building. Other

times crews disassemble the machine to fit in the building and then reassemble the machine in the work area. Amorosano Sr. said the machines make quick work of the reinforced, 18- to 36-inchthick walls. The buildings are typically occupied so the emission-free qualities of the electric-powered machines are another significant benefit. Similarly, the company has had success with interior rock excavation, drilling into then breaking through bedrock common in New York.

A LIGHT FOOTPRINT The robots’ light footprint, even load distribution and — with electric models — emission-free operation paved the way to other applications that would otherwise need to be done manually with hand tools. Breaking Solutions regularly works on rooftops or upper floors of buildings that would be unsafe to work on with larger, heavier equipment. In addition, Amorosano Sr. said as a result of the equipment’s light footprint, project owners sometimes allow the company to work on bridge decks. When faced with restrictions requiring that a 45-pound-maximum jackhammer

The company has a contract with a local transit authority requiring them to be on call 24/7.

Photo Credit: Breaking Solutions

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6/16/20 11:00 AM

Breaking Solutions works on rooftops or upper floors that would be unsafe to work on with heavier equipment.

Photo Credit: Breaking Solutions

IMPROVING SAFETY WITH ROBOTS Breaking Solutions is committed to safety and prides themselves on their excellent record and being able to provide the best tools and equipment for any task at hand. The company does a lot of full demolition work, including taking down entire buildings. Because of the urban environment, this is a controlled process with workers demolishing the structure piece by piece from the top down. Breaking Solutions

www.ForConstructionPros.com/Concrete

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be used to complete the work, Breaking Solutions conducts demonstrations to show how operators can use a demolition robot with a 500-pound hammer and do less damage than the lighter weight version.

“This works because you don’t need to have a guy pushing down on the jackhammer to use it,” Amorosano Sr. says. “The down pressure required for the tool to work makes it difficult to control and be precise, sometimes meaning rebar damage or damage to what’s supposed to be untouched concrete. With a robot and a skilled operator, we can use a light and precise touch to break through the bridge deck, basically just tickling the concrete.”

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CONCRETE CONTRACTOR 25 6/16/20 11:01 AM

CONCRETE TECHNOLOGY CONTINUED opts to use the remote-controlled demolition machines in these applications as opposed to mini-excavators and similar equipment. Although cheaper compared to demolition robots, Amorosano Sr. says they aren’t worth the safety risks in that type of job.

“Machines are replaceable, people are not,” Amorosano Sr. says.

Aside from the obvious benefit of keeping workers safe, Amorosano Sr. says he sees savings in health insurance costs. This is primarily because the company can achieve work with 35 employees that may otherwise require 100 laborers, thanks to the power and productivity offered by the equipment.

Because insurance costs make up about 30 percent of each worker’s wage, a smaller workforce means big savings, which are passed along to their clients.

RENTAL SUCCESS Amorosano Sr. began renting equipment out with experienced operators, which is now a significant portion of their business. Because of their expertise in the field, they are able to provide recommendations to clients for the most optimal machine and efficient solution for their project.

“A small portion of our customers’ business is 100 percent of our business,” Amorosano Sr. says. “So us sending an operator with the machine allows our customers to relax and leave the breaking to Breaking Solutions.”

By constantly servicing their own machines in a state-of-the-art facility, the company also offers maintenance

and repairs for Brokk machines not owned by the business.

According to Amorosano Sr., rental success has been in large part because of the machines themselves, the company’s highly-skilled operating engineers and its customer service. The company places a large investment on upkeep and keeping the machines in pristine condition, with regular parts and service. Managers also work with potential clients carefully to determine whether the job is appropriate for the machine or if there’s a better option.

“It’s important to us that every customer is set up for success,” Amorosano Sr. says. “After all, the equipment is only new for one day but we pride ourselves on sending out a good, clean machine every time.”

REMOTE-CONTROLLED SUCCESS Amorosano Sr. says, aside from safety, the biggest benefit of the machines is productivity, allowing for an ROI on the high-priced equipment. He estimates they complete jobs about 50% faster and with fewer workers with the remotecontrolled machines than they would with other methods.

Not only that, in an industry struggling to find new skilled labor, Amorosano Sr. said he regularly receives unprompted calls from potential hires wanting to work for him and he thinks his high employee retention rate is partly a result of minimizing backbreaking labor common in the demolition world.

Amorosano Sr. says the business has grown steadily over the years as Breaking Solutions adds new applications, services and improves They complete jobs about 50% faster and with fewer workers with the remote-controlled machines than other methods.

Photo Credit: Breaking Solutions

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productivity and safety. Much of the growth, he says, is due to the company’s embrace of innovative equipment in a slow-to-change industry and consistently outperforming their customers’ expectations.

Though competition in the Big Apple is fierce, the contractor’s ability to use the high-tech machinery in tight quarters and pass along significant savings to its clients has enabled the company to expand.

ABOUT BREAKING SOLUTIONS INC. Breaking Solutions Inc. is a New York City-based demolition and heavy equipment rental company. Established in 1994, Breaking Solutions is a boutique, customer-oriented business with a track record of completing complex and demanding projects throughout the five boroughs and the tri-state area and providing nationwide rentals. With a fleet of meticulously maintained equipment and experienced engineers, the company provides its expertise to clients seeking recommendations for the optimal machines to maximize efficiency, productivity and safety. For more information, visit www.breakusa.com and Breaking Solutions’ Instagram, Facebook and LinkedIn pages.

ABOUT BROKK Brokk has been the world’s leading manufacturer of remote-controlled demolition machines and attachments for more than 40 years. Through continuous innovation in engineering and design, Brokk is able to offer unique solutions to multiple industries worldwide, including construction, demolition, mining and tunneling, cement and metal processing, nuclear and other specialty applications. For more information: Brokk Inc., 1144 Village Way, Monroe, WA 98272; 800-621-7856; info@brokkinc.com; www.brokk.com.

For more information on robotic demolition, visit ForConstructionPros. com/21125297.

www.ForConstructionPros.com/Concrete

6/16/20 11:02 AM

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CONCRETE TECHNOLOGY

»

BY KEITH ARMISHAW, BUSINESS DEVELOPMENT MANAGER, AQUAJET SYSTEMS AB

WASTEWATER TIPS: When the Stakes and pH Levels are High

T

here has never been a time when the stakes were higher for construction contractors. For starters, demand is expected to grow 85% by the year 2030. The Associated Builders & Contractors reports that construction backlog hit a historical high of 9.9 months in mid-2018, with bridges particularly desperate for renovation. An estimated backlog of $123 billion in bridge rehabilitation haunts contractors’ collective to-do lists, with nearly one-third of U.S. bridges rated structurally deficient.

Robotic hydrodemolition is one method growing in popularity. It is rising to the challenge of addressing the need for fast, safe and efficient concrete removal during infrastructure projects.

But with hydrodemolition comes the obvious question, “What do you do with the wastewater?”

The answer: collect and clean it.

More and more contractors are finding that a water collection system paired with original equipment manufacturer (OEM) treatment equipment will keep government and environmental agencies happy and keep work coming.

EFFICIENCY THROUGH HYDRODEMOLITION Hydrodemolition robots use highpressure water jets as powerful as 40,000 psi to remove damaged or deteriorated concrete on bridges, office buildings, airport runways, or virtually any concrete structure in need of repair. It is more efficient than traditional handheld methods, matching the speed and surpassing the precision of 15-20 workers operating pneumatic breakers. Contractors looking for ways to keep up with increasing demand can maximize their

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productivity by adding one or more hydrodemolition robots to their crew.

This efficiency, however, does not come without responsibility. While it eliminates the dust and noise pollution associated with pneumatic breakers, the wastewater created during the hydrodemolition process has an increased pH level and high turbidity — cloudiness or haziness caused by the presence of a large number of debris particles. The wastewater must be captured and treated before being released into the environment or reused by a robot.

Hydrodemolition contractors needs to set up a wastewater capture system before beginning a project. The method of capture depends on the project, but typically involves damming up and guiding the water to a holding area where it can be collected and treated.

Crews completing a recent parking garage renovation constructed barricades to contain water and debris as the robot removed concrete. The water was routed across each level of the garage and through a series of filters, allowing gravity to assist with particle removal by the time the water reached ground level.

Another contractor working on a recent Department of Transportation bridge renovation project dammed up the storm collection box on the downhill end of the bridge, as well as any other areas water could escape. Vacuum trucks then sucked the water from the collection area, as well as any standing water in the work area. The entire process, from collection to treatment, was carefully monitored by state officials.

After collection, contractors have the choice between hiring a third party to treat the used water for pH and

Some advanced water treatment systems provide insight into the cleanliness of the discharged water, including pH levels.

turbidity or investing in a water treatment system to do it themselves.

THIRD-PARTY TREATMENT For newcomers to hydrodemolition, capturing and treating the wastewater can seem daunting, and many resort to hiring a third party to manage the process.

These water retrieval contractors haul the water away on vacuum trucks to be treated at a specialized facility.

While this removes some of the logistical burden from the contractor, it is too costly to be a permanent solution.

These wastewater removal services can cost as much as $2,000 per truckload, and there may be a need for upwards of five hauls per day, depending on the project. That means that over the course of a bridge deck repair, for example, contractors could pay as much as $50,000 for water removal services for a one-we ek hydrodemolition project.

Given the high cost of paying a third party for wastewater management, experienced contractors generally favor owning a water treatment system over hiring out the services.

ABOUT THE AUTHOR Keith Armishaw is the business development manager for Aquajet’s North American subsidiary. He has more than 24 years of industry and leadership experience.

Read the full article at ForConstructionPros.com/21128058.

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6/16/20 11:06 AM

A

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•F

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ALL THINGS CONSTRUCTION, ALL UNDER ONE ROOF. • Digital issues • Spec guides • Construction news • Industry directories • Video network • Featured articles • And more!

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SPECIFICATION GUIDE: SCREEDS

SCREEDS

A compilation of technical information when choosing your next screed.

Hand and Spin Screeds 1. THE EZ SCREED COMPLETE TOOL SET The EZ Screed Tool is designed for walks, driveways and slabs of various sizes. The EZ Screed Tool used in an upright position is faster and more effective in the leveling of concrete, resulting in a more precise, professional finish to your concrete job while minimizing stress on back and knees as in the traditional method of screeding. Features: Powder coated handle with stand, quality aluminum blades (3 to 7 lbs. each), lightweight and durable.

ForConstructionPros.com/10080016 Model

Weight (lbs.)

Blade Lengths

Handles

EZ Screed Complete Set

5 lbs. per handle, 1 lb. per foot for aluminum screeds

3’, 4’, 5’ and 7’ aluminum screeds

Powder coated steel handle

Model

Weight (lbs.)

Blade Lengths

Handles

EZ Screed Pro Two

5 lbs. per handle

Will attach to any 10’ to 20’ aluminum or wood screed

Powder coated steel handles

2. EZYSCREED WITH INBUILT LEVEL EZYSCREED is a manual screed, featuring an inbuilt level and reversible capabilities. It is lightweight with a designed screeding edge and reinforcements, making it the most useful, economical and strongest screed on the market. Available in lengths from 0.9 m / 2’11” to 3.6 m / 11’9”.

ForConstructionPros.com/12003790 Model

Weight (lbs.)

Blade Lengths

Handles

EZYSCREED

Multiple weights

Multiple

1

3. SPIN SCREED RUGGED SCREED The Rugged Spin Screed Weighs less than 100 lbs with 22’ pipe and screed Pipe lengths up to 22’ • T-handles The electric powered Rugged Spin Screed is lightweight, quiet; simple to clean, and make rapid length changes. It works on both flat surfaces and steep slopes. The Spin Screed can be used with concrete having a 3” slump and still produce a high quality durable surface.

With the Spin Screed, you’ll produce flatter concrete surfaces with less work and time.

• •

ForConstructionPros.com/10084911

Model

Weight (lbs.)

Blade Lengths

Handles

Rugged Spin Screed

Less than 100 lbs. with 22’ pipe

Pipe lengths up to 22’

T-handles

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4. KRAFT TOOL DIAMOND XX MAG SCREED The Kraft Tool Diamond XX Mag Screed is patented (U.S. Patent #10,352,005 B1) and made from Genuine Extru-Lite™ magnesium which is 30% lighter than aluminum screeds.

• Quality material won’t rust.

• This screed is built for extra strength and rigidity, but lightweight for the largest of jobs.

Available in 1-1/2 in. x 3-1/2 in. or 2 in. x 4 in. for hand screeding.

• Inside the screed, the unique Diamond XX™ pattern gives it superior resistance to bending, twisting, and warping. Secured metal end caps eliminate build-up. Made in the USA. ForConstructionPros.com/21133281 Model

Weight (lbs.)

Blade Lengths

Handles

Diamond XX™ Mag Screed CC606DX

9-35 lbs.

6’, 8’, 10’, 12’, 14’, 16’, 20’, 24’

N/A

5. KRAFT TOOL DIAMOND XX GATORLOY SCREED The Kraft Tool Diamond XX GatorLoy Screed is patented (U.S. Patent #10,352,005 B1) and made from ultra-light, ultra-strong GatorLoy™, a unique aluminum alloy.

• • • •

Quality material won’t rust.

Built for extra strength and rigidity, but lightweight for the largest jobs.

Available in 1-1/2 in. x 3-1/2 in. or 2 in. x4 in. sizes for hand screeding.

Inside the screed, the unique Diamond XX™ pattern gives it superior resistance to bending, twisting, and warping. Secured metal end caps eliminate build-up within the screed. Made in the USA.

ForConstructionPros.com/21133279 Model

Weight (lbs.)

Blade Lengths

Handles

Diamond XX™ GatorLoy™ Screed GF11216

8-38 lbs.

6’, 8’, 10’, 12’, 14’, 16’, 20’, 24’

N/A

6. HYDRA-SCREED HS3000 FROM CURB ROLLER The Hydra-Screed HS3000 is a two-operator machine that has the weight and strength to move over 6 in. of concrete along the pour while allowing operators to remain in a standing position.

ForConstructionPros.com/21062138

Model

Weight (lbs.)

Blade Lengths

Handles

Engine/Motor HP

Hydra-Screed HS3000

115 lbs.

3’ to 30’

Multi-position adjustable

Can connect to any available hydraulic power source: skid loader, mini excavator, power pack and more.

7. CURB ROLLER BATT SCREED 6000 BATTERY POWERED ROLLER SCREED The lightweight Batt Screed 6000 battery-powered roller screed is powered by a removable and rechargeable 60-volt lithium ion DeWalt FLEXVOLT battery.

• One fully charged battery estimated to screed off 1,800 to 2,500 sq. ft., depending on slump and pipe length • Easily accommodates jobs from 3 to 22 ft. with expandable tube inserts ForConstructionPros.com/21062140

Model

Weight (lbs.)

Blade Lengths

Handles

Engine

Engine/Motor HP

Batt Screed 6000

75 lbs.

3’ to 22’

Multi-position adjustable

DeWalt FLEXVOLT battery

60-volt lithium ion battery

www.ForConstructionPros.com/Concrete

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SPECIFICATION GUIDE: SCREEDS 8. CURB ROLLER MANUFACTURING EELSCREED 6100 The Curb Roller Manufacturing Eel Screed 6100 takes corded roller screeds to a whole new level! With its state of the art patent-pending technology, the Eel Screed takes on any flatwork or pervious job with ease.

• Three-position handle folds and locks when not in use for safe transport • Variable speed lever can be moved from the right to left side for easier access • Kickstand keeps the drive end upright and ready to go, yet removes quickly for storage ForConstructionPros.com/21133307 Model

Weight (lbs.)

Blade Lengths

Handles

Engine/Motor HP

Eel Screed 6100

70 lbs. (before interchangeable roller pipe)

3’ to 22’

Multi-position adjustable

Requires a 120-volt, 60-hertz outlet or generator

Wet Screeds 1. MBW SCREEDEMON The MBW ScreeDemon employs a simple, durable, low cost rubber isolator to drive the eccentric. The backto-back triangular construction of the ScreeDemon bar is extremely rigid and minimizes variability in the transmission of vibration.

The ScreeDemon simply clamps to the specially designed bar. The ScreeDemon’s patented mount retention method enables use of low durometer isolators without loss of operator control. Hand/arm vibration is 50 to 90% lower than competitive screeds.

ForConstructionPros.com/10083973 Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

SCREEDEMON WS500H

29 lbs.

Honda GX35

1.5 hp

1.9 in3

4’ up to 24’

Low Vibe Handle

0.17 gal.

2. THE LIBBY CONCRETE SPREADER AND LEVELER FROM IGOE INTERNATIONAL The Libby Concrete spreader and leveler, a unique, one man operated machine capable of leveling a truck load of concrete effortlessly in less than 10 minutes. Because of its patented horizontal vibration, this machine can be pushed forward as well as pulled backwards without sinking and gets a very good finish with minimal ‘fat ‘pulled to the surface.” Unit includes 5 ft. blade.

ForConstructionPros.com/20999428 Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

Libby

30 lbs.

Honda

1.1 hp

N/A

5’, 8’ and 10’

1

600 mL

3. SOMERO COPPERHEAD XD 3.0 This self-propelled 4th generation walk-behind Laser Screed® model automatically cuts concrete to finish grade, screeds it flat, vibrates it smooth, in a single pass. Superior productivity, increases labor savings, levelness, and return on investment. Applications: Slab-on-Grade, Slab-on-Deck, chaired rebar or mesh, in-floor heat, freezer slabs and ice rinks, including many NHL rinks. Winner of numerous Golden Trowel® awards.

ForConstructionPros.com/11151571 Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

Copperhead XD 3.0

850 lbs.

Honda 4-Stroke; Kohler Diesel Optional

13 hp

389 cm4

8’ or 10’

Adjustable

3.5 gal.

Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

Mini Screed C

470 lbs.

Honda 4-Stroke

8.5 hp

270 cm4

83.25”

Fixed

1.4 gal.

32 CONCRETE CONTRACTOR

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CONC0620_30-36_SpecGuidesScreeds.indd 32

6/16/20 11:10 AM

acity

Wet Screeds Continued

4. MULTIVIBE MVPR100H Joe Lindley, owner of Jlin Corp. DBA Multivibe has an impressive background in the art of working with concrete. He had 20 years of experience as a contractor prior to his 26 years of design/ building equipment for concrete placement. Listening to customers is why Multivibe has the largest selection. All of the company’s products are designed and built with the Multivibe quality on focus.

ForConstructionPros.com/12189542 Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

Multivibe MVPR100H

30

Honda

1.5 hp

35 cc

Up to 24’

Option: Single or Two

.6 qts.

5. MQ WHITEMAN DUOSCREED Multiquip’s DuoScreed utilizes a unique blade profile that enables one person to strike-off concrete floors. The screed’s vibratory action embeds aggregate and reduces air voids, producing a strong, dense slab, while eliminating the strenuous time-consuming labor of manual screeding. Unlike competitive designs (which require different blades for each application) the DuoScreed uses a unique reversing blade that allows for the usage of either the curved form to form edge or the wet-screeding edge.

ForConstructionPros.com/10079949 Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

DuoScreed (DSGPULW)

32 lbs.

Honda GX-35SAT

1.3 hp

35 cc

6’, 8’, 10’, 12’, 14’, 16’

Adjustable

.67 U.S. qt.

al.

6. WACKER NEUSON WET SCREED NOW AVAILABLE WITH MAGNESIUM BOARDS Wacker Neuson’s wet screed is now available with a full line of magnesium boards.

Magnesium is a strong, lightweight metal that will reduce the weight of the boards by over 25 percent compared to aluminum boards. The full line of magnesium boards is available in seven different lengths: 6’, 8’, 10’, 12’, 14’, 16’ and a 2-meter option. All the magnesium boards have a 4.9” width and range in weight from 9.8 lbs. to 25 lbs.. The boards are easily connected to the wet screed system.

ForConstructionPros.com/12058112 Model

Weight (lbs.)

Engine/Motor Manufacturer

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

P35A Wet Screed

34.2 lbs.

Honda GX35

1.6 hp

2.2 in³

4’ to 16’

Twin handle

0.7 qts,

7. SILVER BEAUTY POWER SCREED The Silver Beauty power screed helps contractors achieve high F-Numbers, even in extremely low-slump concrete.

Tank apacity

• T-handlebar design for greater control and maneuverability • Enclosed eccentric • Equilateral triangle bars from 4 to 20 ft.; L bars from 6-1/2 to 10 ft.

• Unit weighs 29 lbs.

.5 gal.

ForConstructionPros.com/10076840

acity

l.

Model

Weight (lbs.)

Engine

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

Silver Beauty 9900

29 lbs.

Honda

GX35 1.5 hp

35.8 cm3

2’ to 14’

T and bicycle

0.67 qts.

www.ForConstructionPros.com/Concrete

CONC0620_30-36_SpecGuidesScreeds.indd 33

MAY/JUNE 2020

CONCRETE CONTRACTOR 33 6/16/20 11:10 AM

SPECIFICATION GUIDE: SCREEDS Wet Screeds Continued

8. BLACK BEAUTY POWER SCREED • • • •

Uses dual vibration, horizontal and vertical 10 lbs. extra weight than the average screed Allows contractors the ability to handle 2- or 3-in. slump or a 16 ft. bar with just one unit New Extended Life Motor Mount isolates motor to keep most of the vibration down on the lower unit • Honda 4-stroke gas motor ForConstructionPros.com/10087821 Model

Weight (lbs.)

Engine

Engine/Motor (horsepower)

Displacement

Blade Lengths

Handles

Tank Capacity

Black Beauty 9700HD

33 lbs.

Honda

GX35 1.5 hp

35.8 cm3

2’ to 20’

T and bicycle

0.67 qts.

9. MARSHALLTOWN BATTERY OPERATED SPIN SCREED MARSHALLTOWN’s Spin Screed, the world’s first lightweight power roller screed, produces flatter, more durable concrete surfaces with less effort, time, and labor. The battery-operated model is powered by the 18V X2 LXT (36V) Brushless Right Angle Drill from Makita (10-amp corded model also available). Each unit comes equipped with 4 batteries (5.0 ah) and a dual-battery charger, ensuring non-stop, worry-free power all day long.

ForConstructionPros.com/21134340 Model

Battery Operated Spin Screed

Weight (lbs.)

28 lbs. (power head only)

Engine

Engine/Motor (horsepower)

Makita

18V X2 LXT (36V) Brushless Makita Right Angle Drill

Displacement

Blade Lengths

Handles

Tank Capacity

N/A

SCH 40 Aluminum Pipe from 4’ to 22’

N/A

N/A

W I N C H E S W I N C H E S

America’s Original Upright Manual Screed System

EZ Screed Complete Set

4’

5’

Y INDUSTR RUCTION ST N O C E TH HES FOR TY WINC SPECIAL

7’

3’

BLOOM MANUFACTURING, INC. Custom Engineered Solutions Since 1910

EZScreedTools.com

34 CONCRETE CONTRACTOR

937-884-0081

MAY/JUNE 2020

CONC0620_30-36_SpecGuidesScreeds.indd 34

Independence, IA 50644, USA | bloommfg.com P: 319-827-1139 | 800-394-1139 | F: 319-827-1140

www.ForConstructionPros.com/Concrete

6/16/20 11:11 AM

Power Screeds 1. LIGCHINE SPIDERSCREED In 2019, Ligchine™ introduced the SPIDERSCREED™ Series–a compact, lightweight and maneuverable drive-in system designed for upper deck concrete and slab-on-grade screeding applications.

The drive-in SPIDERSCREED machine was designed to be lightweight and powerful, featuring a 100% TIG welded tubular aluminum cage design that keeps overall weight down to approximately 1,280 lbs. (581 kg). Its patent-pending 3-wheel Versa-Drive system, independent zero-turn drive, up to 90° horizontal drive, and lateral drive. It offers the industry’s best power to weight ratio (55 lbs. (25 kg) per horsepower), allowing lower slumps and cooler running at all times. It also incorporates Ligchine’s patented machine leveling system to ensure flatter floors and greater compaction than simple screed head only leveling systems.

ForConstructionPros.com/21133295

Model

Height (inches)

Width (inches)

Weight (lbs.)

Blade Lengths

Engine

SpiderScreed

57”

94”

1,280 lbs.

10’ screed head

Honda GX630

Engine/Motor (Mfg & Horsepower

# of Drive Wheels

Machine zero turn drive capable

Fuel Type

20.8 hp.

3

Yes

Gas

SCAN TO LEARN MORE

2. LIGCHINE SCREEDSAVER PRO 220 The PRO 220 combines the accuracy and durability of our standard MAX 200 with design features included on our top-of-the line BOSS 240 mega screed. Unique to the PRO 220 is the inclusion of our patent-pending zero-turn drive system that allows the upper boom frame and lower drive frame to independently spin 360°. It also features our automated concrete additive spray bar system integrated into the screed head and our on board color touchscreen full diagnostic display.

ForConstructionPros.com/21081078

Model

Height (inches)

Width (inches)

Weight (lbs.)

Blade Lengths

Engine

PowerScreed

4’6”

6’4”

4,870 lbs.

12’ 6” auger/ plow head

Kubota D90Z series

Engine/Motor (Mfg & Horsepower

# of Drive Wheels

Boom Coverage

Machine zero turn drive capable

Fuel Type

25 hp.

4

220 sq. ft./pass

Yes

Diesel

www.ForConstructionPros.com/Concrete

CONC0620_30-36_SpecGuidesScreeds.indd 35

NEW

RB401T-E

The extended frame of the RB401T-E allows you to stand-up and tie rebar for concrete slabs.

The RB401T-E uses the same battery and tie wire as the RB441T and RB611T TwinTiers.

WWW.MAXUSACORP.COM | 800.223.4293 | MAY/JUNE 2020

CONCRETE CONTRACTOR 35 6/16/20 11:12 AM

SPECIFICATION GUIDE: SCREEDS Power Screeds Continued

3. SOMERO SRS-4 LASER SCREED® The compact Boom Laser Screed Machine has been perfected. Introducing the Somero SRS-4 Laser Screed® Machine. The SRS-4 is safer with better visibility, more maneuverable, easier to operate with a smoother roller boom and lighter weight.

ForConstructionPros.com/21136283 Model

Height (inches)

Width (inches)

Weight (lbs.)

Blade Lengths

Engine

Engine/Motor (Mfg & Horsepower

Boom Coverage

Machine zero turn drive capable

Fuel Type

SRS-4 Laser Screed Machine

5’5”

6’1”

4,400 lbs.

N/A

Kubota Diesel 25 hp

N/A

18’ boom, 10’ head

180 steering angle

Diesel

4. SOMERO S-940 LASER SCREED MACHINE The S-940 provides unmatched versatility and simplicity with increased power and productivity!

Available with a fully automated self-leveling screed head, raking/fine grade head, this powerful machine has fewer switches and an easy-access hinged console, making any job comfortable for your operator.

ForConstructionPros.com/21136301

Model

Height (inches)

Width (inches)

Weight (lbs.)

Blade Lengths

Engine

Engine/Motor (Mfg & Horsepower

Boom Coverage

Machine zero turn drive capable

Fuel Type

S-940 Laser Screed Machine

5’

4’9”

1,775 lbs.

N/A

16 kW Subaru EH65

22 hp

8’ head, no boom

360 steering angle

Gas, diesel optional

5. SOMERO S-22EZ LASER SCREED MACHINE The S-22EZ is equipped with 360° machine rotation, a 20’/6m telescopic boom and the choice of pivoting screedheads.

ForConstructionPros.com/21136302

Model

Height (inches)

Width (inches)

Weight (lbs.)

Blade Lengths

Engine

Engine/Motor (Mfg & Horsepower

Boom Coverage

Machine zero turn drive capable

Fuel Type

S-22EZ Laser Screed Machine

8’3”

7’2”

14,500 lbs.

N/A

16 kW Subaru EH65 22 hp; 48.5 kW Cummins Diesel QSF 2.8 T4f 65 hp

N/A

20’ boom with 12’ head

360 steering angle

Diesel

6. BATT SCREED FROM CURB ROLLER MANUFACTURING According to the company, the Batt Screed is the world’s first battery powered roller screed which not only eliminates exhaust fumes, power cords, and hydraulic power sources, but is designed for quick assembly and break down. The removable ends can be installed quickly in tubes from 3 ft. to 22 ft. long, and the single pin connection allows for easy transport. Powered by DeWalt FLEXVOLT, the Batt Screed offers unparalleled mobility, precision, and efficiency to contractors of all sizes.

ForConstructionPros.com/21062140

Model

Height (inches)

Width (inches)

Weight (lbs.)

Boom Coverage

Engine/Motor (Mfg & Horsepower

# of Drive Wheels

Machine Zero Turn Drive Capable

Fuel Type

Batt Screed

52”

Up to 22’

70 lbs. (before pipe)

N/A

Battery powered (DeWalt FLEXVOLT)

N/A

N/A

N/A

36 CONCRETE CONTRACTOR

MAY/JUNE 2020

CONC0620_30-36_SpecGuidesScreeds.indd 36

www.ForConstructionPros.com/Concrete

6/16/20 11:12 AM

SPECIFICATION GUIDE: SAWS

CONCRETE SAWS

A compiliation of technical information when choosing your next concrete saw.

1. HUSQVARNA K 770 CONCRETE SAW The Husqvarna K 770 is a powerful all-around power cutter with features that make it one of the best power cutters on the market. Equipped with a semi-automatic SmartTension™ system that allows for optimal power transmission, minimum wear and maximum belt life. The K 770 is light weight with an outstanding power-to-weight ratio, reliable starts and exceptionally low vibrations.

ForConstructionPros.com/21134484

Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

K 770 Power Cutter

5”

14”

N/A

Wet (dry cutting models available)

N/A

Husqvarna X-Torq

5 hp

2. HUSQVARNA K 970 CONCRETE SAW Sturdy, reliable, light and powerful – the Husqvarna K 970 power cutter is ready to perform when you are. The ultimate choice when you need an all-around cutter performing in the toughest conditions, withstanding climate and fuel variations. The K 970 is equipped with semi-automatic SmartTension™ that minimized the risk of under- and over-tensioning. It is easy to start and has long service intervals.

ForConstructionPros.com/21134489

Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

K 970 Power Cutter

6”

16”

N/A

Wet

N/A

Husqvarna X-Torq

6.5 hp

3. HUSQVARNA FS 7000 D CONCRETE SAW The Husqvarna FS 7000 D is our most powerful diesel walk-behind flat saw with low emissions, developed to be compliant with Tier 4 regulations. It is ideal for concrete and asphalt cutting (up to 17-1/2” deep) and is suitable for mid-sized road work, service work and smaller jobs that require high production rates. It is highly versatile due to the its high output, compact size and good maneuverability. It is equipped with an intuitive and ergonomic digital control panel.

ForConstructionPros.com/21134492

Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

FS 7000 D Flat Saw

17 1/2”

42”

Electrohydraulic pump for the blade depth control

Wet

N/A

Deutiz C4D155.4

74 hp

www.ForConstructionPros.com/Concrete

CONC0620_37-39_SpecGuidesSaws.indd 37

MAY/JUNE 2020

CONCRETE CONTRACTOR 37 6/16/20 11:19 AM

SPECIFICATION GUIDE: SAWS 4. MX FUEL 14-IN. CUT-OFF SAW Part of the new MX FUEL™ Equipment System, the MX FUEL™ 14” Cut-Off Saw delivers the best 14” cut-off saw experience by providing full 14” blade capacity, the fastest cuts from start to finish and no gas headaches. No emissions, less vibration, and quiet operation allows users to work safer and be more productive.

ForConstructionPros.com/21131552

Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

MX FUEL 14” Cut-Off Saw

5”

14”

Mechanical

Wet

No

No engine. This is the first battery-powered 14” cut-off saw.

Battery-powered.

5. ATLAS COPCO LS 14 The LS 14 concrete saw makes quick work of cutting concrete, asphalt and steel. The direct drive and simple machinery means high productivity and reduced maintenance, especially in comparison with belt-driven saws.

ForConstructionPros.com/20986019 Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

Power Technique LS 14 Concrete Saw

5.2”

14”

Hydraulic

Both

N/A

N/A

9.1 hp

4

PECORA-DECK HB1000

6

FAST CURING, LOW-ODOR, INDUSTRIAL GRADE POLYURETHANE COATING

PROTECT YOUR INVESTMENT

SUN

WATER

SNOW/ICE

CHEMICALS

5 n

FAST CURE ALLOWING FOR QUICKER RETURN TO SERVICE n

HIGH IMPACT AND ABRASION RESISTANCE FOR USE IN HEAVY DUTY VEHICULAR AND PEDESTRIAN AREAS

n

HIGH-MIL APPLICATION WITHOUT OFF-GASSING, BUBBLING OR SWELLING OF THE COATING UPON CURE

n

LOW-ODOR MEANS IT IS SAFE FOR INTERIOR APPLICATIONS WITH ADJACENT OCCUPIED SPACE n

n

FIELD TINTABLE OPTIONS ARE AVAILABLE

COMPLIMENTS THE EXISTING PECORA-DECK LINE OF PRODUCTS

FOR MORE INFORMATION CONTACT YOUR PECORA SALES REPRESENTATIVE

PECORA.COM

38 CONCRETE CONTRACTOR

MAY/JUNE 2020

CONC0620_37-39_SpecGuidesSaws.indd 38

www.ForConstructionPros.com/Concrete

6/16/20 11:20 AM

6. CP 0044 AIR-POWERED SAW The powerful and durable CP 0044 pneumatic cut-off saw is designed to cut a variety of materials including concrete, asphalt and stone. It is driven by a direct drive 4 horsepower engine. Engineered for precise balance, so less effort is needed to do the job. A built-in oiler provides continuous lubrication. Safety features include a standard lock-off trigger to help prevent accidental starting and a blade guard that can be operated by one hand for convenience.

ForConstructionPros.com/10090437 Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

CP 0044 Pneumatic Cut-Off Saw

4”

14”

Direct drive

Dry

N/A

Air motor.

4 hp

7. SKILSAW’S MEDUSAW IS FIRST WORM DRIVE SAW SPECIFICALLY FOR CONCRETE Medusaw™ Walk Behind Worm Drive is the only worm drive walk behind concrete saw. Cutting long control joints is simple with the new integrated handle that adjusts height and folds easily. Legendary SKILSAW® worm drive power and a pivoting pointer deliver unmatched precision and convenience. Used wet or dry, the integrated dust management system controls dust for cleaner cuts. The all metal components featuring rust-resistant brackets and fasteners protect from corrosion for longer life.

ForConstructionPros.com/12272511 Model

Max Depth of Cut

Max Blade Size

Hydraulic/Mechanical Blade Lowering Device

Wet or Dry Cut

Onboard Dust Collector

Engine

Horsepower

Medusaw™ Walk Behind Worm Drive

2”

7”

Mechanical

Both

Yes

Electric - 15 AMP Dual-Field ™ Motor

N/A

6

NEWfor2020

EXPANDED CONCRETE DIMENSIONS LINEUP

7 Unique, easy-to-use, reusable stencils to enhance your work – now with more than double the designs!

CONCRETE

dimensions

Full catalog: www.brickform.com • (800) 624-0261

www.ForConstructionPros.com/Concrete

CONC0620_37-39_SpecGuidesSaws.indd 39

MAY/JUNE 2020

CONCRETE CONTRACTOR 39

6/16/20 11:20 AM

BY BOSSTEK

ATOMIZED MIST

MEETS STRICT STANDARDS

A

pioneer in atomized mist technology has helped a government contractor comply with strict military concrete quality and dust emission standards during the construction of an airfield tarmac. By providing a consistent humidity level in a high-heat desert environment, the

40 CONCRETE CONTRACTOR

CONC0620_40-43_PC.indd 40

DustBoss DB-30, manufactured

by BossTek, helped Southwest Concrete Paving Company (SWCP) maintain the proper moisture levels needed for high-grade concrete production.

In addition, the mobile misting cannon offered dust suppression during the demolition

Specialized nozzles create a mist that’s propelled by a powerful industrial fan.

Photo Credit: BossTek

of the previous tarmac and storage of dusty material. The result of the nine-month, multi-phase contract was a premium quality 87,000-sq.-yd. concrete tarmac that

MAY/JUNE 2020 www.ForConstructionPros.com/Concrete

6/16/20 11:23 AM

passed inspections the first time while adhering to all workplace dust standards throughout the project.

PROPER CURING: CRITICAL FOR COMPLIANCE The consequence of not meeting the required standards can be ripping out entire sections of the project to create a compliant product. The life cycle of a normal road is 15–20 years, whereas the life cycle of an airstrip apron is 40-60 years. Due to the point loads of jets and other aircraft, proper curing is critical, thus engineers meticulously test for slump and moisture content every step of the way.

Paving crews in arid conditions generally work through the night to control surface temperature and slump. Critical factors include

ambient temperature, concrete temperature, wind speed and humidity. As the concrete mix temperature increases, slump will decrease approximately 20 mm (0.8 in.) for each 10°C (or 20ºF) rise in temperature.

PRECISE SURFACE CONDITION AND MOISTURE CONTENT CONTROL “The night temperatures fluctuated, but often remained above 80º F (27º C),” explains David Rath, QCQA manager for SWCP. “In those conditions, the relative humidity across the curing slab has to consistently stay above 40%. If the surface conditions aren’t precisely controlled, the concrete surface will be prematurely exposed to tensile stresses that it cannot withstand before the

hydration of the cement has passed a certain stage. This causes small cracks known as plastic shrinkage, which can significantly reduce the life of the concrete.”

Once the sun went down, the atomized misting cannon was moved to the front of the paving machine to lay an even surface of moisture across the base layer. When pouring, the moisture content of the concrete mixture is precise, but the dry ground can draw the moisture out of the meal, increasing the chances of cracking.

UNIT MOBILITY LEADS TO IMPROVED TARGETING Due to the need for mobility, SWCP secured the DustBoss DB-30 to the back of a flatbed truck with a 250 gallon (946 L) water tank and a

everything you need for your concrete grinding & polishing project

s .

k

superabrasive.com

www.ForConstructionPros.com/Concrete

CONC0620_40-43_PC.indd 41

MAY/JUNE 2020

CONCRETE CONTRACTOR 41 6/16/20 11:24 AM

The self-contained unit follows as the project progresses.

Photo Credit: BossTek

portable generator to create a completely mobile and autonomous unit, designed for conditions that lack adequate access to water and power.

The water cannon could be removed and placed on a hydraulic forklift as high as 40 ft (12 m) in the air. This allowed improved targeting of the atomized mist sprayed over and around the newly poured concrete to provide the humidity and surface moisture needed for proper finishing. Using the variable height and the DB-30’s adjustable 0-50° vertical angle settings, operators were able to control the humidity levels and coverage area, while compensating for wind.

42 CONCRETE CONTRACTOR

CONC0620_40-43_PC.indd 42

Water from the tank is forced through a circular stainless steel manifold with 30 atomizing spray nozzles at the front of a heavyduty cone-shaped barrel design. A powerful 7.5 hp fan at the back of

the cannon, producing 9,200 cfm (260.50 cmm) of airflow, launches millions of tiny droplets in a 100foot (30 meter) cone. With 180º horizontal oscillation, the unit has a coverage area of 17,000 sq. ft.

MAY/JUNE 2020 www.ForConstructionPros.com/Concrete

6/16/20 11:26 AM

When properly positioned, the DB-30 coversthe entire area of the night’s pour.

Photo Credit: BossTek

(1,580 sq. m.). Using only 9.8 gpm (37 lpm) of water, the unit raises the humidity of an entire area with evenly distributed droplets between 50-200 microns in diameter (approx. the size of fine dust), while minimizing pooling or runoff.

The unit is designed to be set up by a single worker and operated autonomously without further attention. Able to be operated by remote control, the DB-30 also has a touchscreen panel for adjusting the settings (oscillation, pump settings, etc.). The panel is encased in a NEMA 3R cabinet to protect it from the harmful elements of outdoor operation such as dust, rain and contaminants.

The mobility and adjustability of the DB-30 allowed crews to reposition and recalibrate the settings of the atomized mist cannon to raise the humidity above the paved surface and prevent water from being sheared away by high winds.

“Some of the wind conditions would have stopped construction cold in the past,” says Rath.

“Positioning the DustBoss upwind, allowing the air to carry the humidity with it, kept us up and running on several occasions. Otherwise, we might have had to go back, rip out what we poured and start again.”

Water-Based Enhancer & Water Repellent Sealer

Te cu

Low-VOC penetrating water repellent & concrete enhancer seals while preserving the natural look of the substrate DECRA-SEAL NATURAL is designed for various applications, including interior, exterior, horizontal, and vertical concrete and masonry surfaces, unglazed tiles, and a variety of porous natural and artificial stone applications.

FEATURES & BENEFITS: • Enhances & enriches color • Does not create a glossy finish • Repels water • Reduces water & salt penetration • Low VOC

AL

L RA TU NA D TE EA

TR

For a solution based on your needs, visit wrmeadows.com or call 1-800-342-5976.

SE

CONC0620_40-43_PC.indd 43

™

UN

www.ForConstructionPros.com/Concrete

DECRA-SEAL NATURAL

A-

Wrapping up the finishing touches of the project, core samples of the concrete taken by inspectors demonstrated high quality, with no compliance issues. The meticulous planning, technical skill of the staff and use of modern technology allowed SWCP to complete the project on time and on budget with no major downtime.

The technology has proven to be applicable across several segments

“DustBoss technology has added to our success,” concluded SWCP Vice President David Nuttall. “The fact that they’re highly durable American-made products supported by excellent service definitely sets them apart from the competition.”

CR DE

FINISHING TOUCHES

within SWCP’s business, from road construction to military and public airports. Enhanced control over the finishing process helped improve the outcome and extend the life of the finished product. This attention to detail and quality has become a hallmark of SWCP projects.

#wrmeadows © W. R. MEADOWS, INC. 2020

MAY/JUNE 2020

CONCRETE CONTRACTOR 43 6/16/20 11:26 AM

BUSINESS 101

»

BY CONNIE JOHNSON

Building Up the Construction Industry

O

ver three million tourists head to Barcelona every year to see one of the most impressive Catholic churches in the world, the Sagrada Familia.

What many don’t realize is that the building’s construction isn’t even complete, and it won’t be until 2026 — 147 years after construction work began. However, as less people join the construction industry, can we guarantee that the church will ever be finished? In this article Connie Johnson, vice president of marketing at surface preparation equipment manufacturer National Flooring Equipment, explores how the construction industry can end the skills shortage. This article is written from a UK perspective, but its lessons and tactics are applicable to the American construction and concrete industries as well.

Construction has always been a vital part of our lives, culture and economy.

In 2017, the UK’s construction industry generated £113 billion (~$129 billion USD), which represented 6% of the country’s economy. The UK construction industry also contributes to employment, with 2.93 million people currently working in the sector, representing 10% of all employed people.

DEMAND Construction businesses are currently under pressure to provide more infrastructure at a faster rate. However, the industry is struggling to encourage young people to enter the field and only about 10% of construction workers are aged between 19 and 24. On the opposite end of the spectrum, 15% of UK contractors are in their 60s and planning to retire soon, creating more of a skills shortage as experienced construction workers leave the field.

The Chartered Institute of Building (CIOB) has reported that the UK industry must find 157,000 new recruits by 2021 to keep up with demand for more

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infrastructure. So how will businesses source the skilled workers to meet this demand?

students real life examples of careers in construction and challenge any stereotypes before it impacts a student’s opinion.

PERCEPTION IS KEY Construction is often perceived as a dirty, outdoor job that does not require much skill. However, the construction industry includes a range of disciplines such as architects, engineers, surveyors, bricklayers and many more. All of these are challenging and rewarding careers that require a broad range of skills.

Construction businesses are often also perceived as old-fashioned, but many are starting to invest in technology to remain competitive. In many areas of construction, including surface preparation, contractors have traditionally completed work using hand tools, which makes work time consuming and labor intensive.

By investing in powerful, modern equipment, contractors can work more quickly, efficiently and safely to meet demand. By promoting their investment in technology, businesses can highlight improvements in the sector and change outdated perceptions.

RESPONSIBILITY A lack of understanding about who is responsible for developing the next generation of construction workers is one of the main barriers to tackling the skills gap. Everyone in the industry should be concerned about the growing skills gap and do what they can to ensure the future of the sector.

Businesses, schools and trade bodies must work together to show students that construction can be a rewarding career that involves more than wearing a hard hat and working in a dirty, outdoor environment. Trade bodies can support companies to provide safe, efficient and modern workspaces for employees and challenge perceptions about the industries. Businesses and schools can also collaborate to ensure students have the opportunity to see construction as a potential career in the future.

National Flooring Equipment has over 50 years’ experience in the industry and aims to increase knowledge and understanding across the industry. We offer quarterly training sessions so that contractors can understand how to efficiently and safely use surface preparation equipment during construction work, which will hopefully help close the skills gap present in the industry.

We often forget that buildings like the Sagrada Familia would not exist without construction workers. Supporting the industry is the best way to ensure that buildings, both impressive and for everyday life, are built to meet the demands of our growing population.

INSPIRING A NEW GENERATION According to data from the Construction Industry Training Board (CITB), young people often perceive construction careers as a path for people who do not get a place at a college or university.

Its data also found that people aged 14 to 19 scored construction a 4.2 out of 10 on its appeal as a career option.

Businesses and education should work together to encourage younger people to see construction as an appealing career opportunity. Teachers should help young people to challenge stereotypes and understand the multiple skills and disciplines required in the industry. Businesses can also work with local schools to show

For further information contact Connie Johnson, National Flooring Equipment: Connie.J@nationalequipment.com

www.ForConstructionPros.com/Concrete

6/16/20 3:09 PM

BY SHEENA INGLE

CONCRETE CONSTRUCTION INNOVATIONS DURING

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hese have undoubtedly been some of the strangest and most difficult days contemporary Americans have ever faced. While some concrete contractors have been able to keep working through quarantines and pandemic threats, others have seen projects halted.

Whether you're working steadily or trying to figure out how to jump-start your business upon a return to normalcy, now might be an excellent time to learn about the latest technologies, advancements, innovations and expert tips that are driving the industry forward.

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www.ForConstructionPros.com/Concrete

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metamorworks/ iStock / Getty Images Plus

NEW TECHNOLOGIES: ROBOTICS, DATA LOGGERS AND MORE From robotic demolition that enables big work in tight spaces to high-tech atomized dust suppression solutions, new technological innovations boost productivity, safety, efficiency and advancement.

Robotic technology is allowing contractors to perform a range of tasks autonomously that previously required manual work, such as rebar tying, demolition and surveying.

Meanwhile, Stephen Knuth from T&D US says data loggers enable accurate and effective concrete curing.

When it comes to workforce development, National Flooring Equipment vice president Connie Johnson says improving

the perception of the concrete construction industry is key to inspiring a new generation of jobseekers to consider contracting.

At the same time, Dale Mullikin, a national account director for Atlas Molded Products, says molded polystyrene foam can solve a lot of common challenges with its high compressive strength for a lightweight structural fill.

Wherever your company stands at the moment, learning everything you can about boosting efficiency, implementing best practices and discovering what's new in the industry can only help. Even if we are forced to set new goals in the face of adversity, together, we can all get through these tough times and look ahead to better days.

Verify ACI Certification The American Concrete Institute’s Certification Verify app allows users to quickly and easily verify the status of ACI-certified individuals through three search options: (1) verify an individual’s certification ID number, (2) search by an individual’s name, and (3) find the total number of ACI-certified individuals in an area.

Accessible through a phone or tablet, the app is the perfect tool to use on the jobsite to verify the status of people working on a project. Using the same functionality of the popular concrete.org/verify webbased verification tool, the ACI Certification Verify app helps the entire verification process become more seamless so jobs can keep moving forward.

The app is currently available in iOS platforms.

An Android version is expected to be available soon.

Learn more about ACI Certification at whyACIcertification.org.

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Idea File

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The TwinTier RB401T-E is the world's only cordless rebar tying tool designed exclusively for slab work. No more bending to tie RB401T-E miles and miles of slab. This tool allows users to simply stand-up and tie, with no strain on their back. The tool’s triggerless technology allows end users to tie rebar by simply placing the contact SCAN TO LEARN MORE arm into rebar cross sections and pushing down.

The RB401T-E forms strong and secure ties on #3 x #3 up to At 3-1/2 ft. tall, and 11 #6 x #6 rebar lbs., this lightweight combinations. cordless rebar tying tool can form a tie in half a second. To accommodate the height of various end users, the tool’s handles can be adjusted to two positions.

LAVINA 32RE is a 32” remote-controlled floor grinder from the LAVINA Elite Series. Features include: easy-to-use remote control for precise operation, intuitive HMI touchscreen, forced planetary drive, three 13.2” grinding heads, integrated weights, misting system, LED lights. Also offered with 9” heads suitable for prep and removal projects. Available in 220V and 480V. WWW.SUPERABRASIVE.COM

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Idea File

Honda iGX700 and iGX800 Engines When it comes to providing enhanced performance and dependable power for heavy-duty construction equipment, OEMs of general-purpose engines are faced with a number of challenges. Among these are how to best produce reliable, intelligent products that are adaptable, versatile, and fuel efficient, and most important, capable of keeping tools running in the most demanding of applications. At the same time, contractors seek the most efficient, technologically advanced and cost-effective equipment—machines that deliver on-time performance, require minimal maintenance without compromising on durability, and provide the best return on investment.

HONDA V-TWIN IGX ENGINES: HOW RELIABILITY MEETS INTELLIGENCE FOR THE MODERN CONTRACTOR Two Honda V-Twin engines, the iGX700 and iGX800, offer commercial construction customers versatile power and greater adaptability with excellent fuel efficiency in a compact package. Providing enhanced performance and quality, the engines are equipped with fuel injection technology and an integrated electronic self-tuning regulator (STR) governor that delivers drive-by-wire remote control capability to manage key aspects of engine operation.

The Honda iGX700 and iGX800 models, configured with horizontal shafts, are designed with electronic governors that allow the engines to regulate power when the load changes for the demanding commercial applications including concrete and construction equipment (power screeds, hydraulic power units, concrete saws, ride-on concrete trowels, vibratory rollers, generators and pressure washers). Because the new Honda V-Twin iGX engines eliminate the need for manual manipulation of the choke and throttle, they also are ideal for rental applications.

Additional iGX design features include a digital ignition system; long-life air filter; automotive-style starter motor; low- pressure and highpressure fuel pumps; and engine temperature monitoring.

Honda iGX models carry a three-year, non-declining warranty. Parts and services are available via the Honda national dealer network.

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Idea File

INDEX ADVERTISER .......................................PAGE Advance Metalworking Co. ............................................... 45 American Concrete Institute .......................................... 5, 46 Bloom Mfg. ......................................................................... 34 CAT Dealer Network .......................................................... 19 Curb Roller Mfg. ........................................................... 21, 49 EDCO................................................................................... 23 EZ Screed Tools .................................................................. 34 Honda - Engines ............................................................. 9, 48 IGNITE Construction Summit ............................................ 51 Ligchine International................................................... 47, 52 Max USA ........................................................................ 35, 47 Minnich Mfg. ....................................................................... 11 NLB Corp............................................................................. 25 Pecora Corp. ....................................................................... 38 Quikrete......................................................................... 15, 48 Simpson Strong-Tie ............................................................ 27 Solomon Colors ............................................................ 39, 47 Somero Enterprises ........................................................ 2, 49 Superabrasive ............................................................... 41, 47 W. R. Meadows ................................................................... 43

www.ForConstructionPros.com/Concrete

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CURB ROLLER MANUFACTURING Take your curb & gutter game to the next level! The Curb Roller lets you shape 2X faster than traditional methods.

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MAY/JUNE 2020

CONCRETE CONTRACTOR 49 6/16/20 3:22 PM

THE LAST PLACEMENT

»

BY BRAD HUMPHREY

What’s a Contractor to Do… with COVID19?

O

K, you have heard all the same prevention steps I’ve heard regarding slowing down and eventually stopping this incredible virus that has seemingly taken over the world. I’m not being sarcastic, the more I learn about this incredible “enemy,” it’s no wonder that our political leaders, including our president, have called this time, a war.

But what sort of war do we want to fight? If we want to fight a war such as the Vietnam War, or more recently, the “war” in Afghanistan, are we willing to stretch this COVID-19 War some eight, 10, even 12 years or more? Instead, do we want to go the route of the war with Iraq, when in less than almost a few days, General Norman Schwarzkopf led the U.S Troops to completely take out the Iraqi military?

Well, as contractors, we don’t fight wars of the kind mentioned above.

But we have a war of sorts in battling against the potential that customer might hold back a bit from making business decisions about maintaining their property. Let’s take a few steps toward addressing this reality for many contractors, who are simply trying to keep their companies alive during this questionable time period.

1. Remember, Many Customers Have Moved to Working Remotely Many organizations have recommended, if not required, their workers to work remotely from their home. For contractors, this might mean that the property manager, who hasn’t been to their office in one or more weeks, is still answering the phone. Don’t stop the calling…they are simply doing more of their work via their cell phone, Skype, Facetime, etc.

2. Look to Keep Your Own Workers Healthy…

Practice Smart Healthy Guidelines Since most states, to date, appear to be including construction as an essential service, this doesn’t mean that suddenly our entire industry is completely immune from the virus. As much as possible, put the 5-10 people in a confined area into practice, encourage the guys not to stand right over other workers, wash the hands, etc. If your workers complain about symptoms that eerily sound like the flu, or the COVID-19 Virus…get them to stay home, if not get tested. You simply can’t take the chance that one, or more workers, might have the virus and stand the chance to infect others. No workers…no work!

3. Keep a Vigilant Watch Over Workers in the Critical Categories Any of your workers, office or field, who fit any of the “at risk” descriptions, be extra cautious about their working.

Older employees, and our industry still has many, those in the mid-to-late sixties (and up), are easy to address. However, even some of our younger workers, should they have serious ailments, such as asthma, can be at great risk if they get the virus. As we know, our industry has its share of workers, some whom have not taken great care of themselves over the years. Such past behavior will not miraculously change now; encourage all your workers to “cool it” on the drinking, smoking, partying, etc. as these efforts can put them, and others at risk.

4. Remind Customers that Your Crews are “Essential” Some of your customers may actually think that since they are down, that you are too. Call them and let them

know that there is a reason why most state government, modeling the national focus, have deemed construction as an essential, therefore, an allowed industry to work. Why? Because maintaining the infrastructure and costs associated with construction is less expensive now, than waiting another year to fix cracks, deteriorating parking lots, badly fading handicap parking markers, etc. Plus, with our 90% of our work, or higher, being completed outside, the risk to catch the virus is greatly reduced due to our workers being spread out across a job site.

Stay atop of the warnings and guidelines that our health professionals put out. Unless you have a medical background, demonstrate prudent decision making in how you treat your workers and how the public views your own behavior. This is not the time to be cavalier, stepping out and taking unneeded risks. The potential consequences are simply too high.

If ever the term “Work Smart” fit a time, that time is now!

Work Smart…and Wash Your Hands!

For more information on navigating the COVID-19 pandemic, visit ForConstructionPros. com/21126932.

SA $

W EA RE

If th atte

FRO

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