Concrete Facts Magazine Online

CFA Elects New Board Members

Mt. Vernon, Iowa (Oct 10, 2013) — The Concrete Foundations Association (CFA) – a North American association serving as the voice and recognized authority for the residential concrete industry – announces the arrival of two new members to the Board of Directors.

During the CFA Annual Convention, held this summer at the Hyatt Tamaya in Santa Ana Pueblo, New Mexico, members in attendance elected two new members to the Board of Directors from the slate of candidates offered.  Doug Doggett of Doggett Concrete Construction in Charlotte, North Carolina and Kirby Justesen of SCW Footings & Foundations, Inc. in Salt Lake City, Utah joined the board for three-year terms.  Additional members will be placed by the Board to terms from at large invitation during their Fall Board meeting in Phoenix, Arizona later this month.

Doug Doggett, CEO of Doggett Concrete, begins his first term on the CFA Board.  His company is dedicated to the residential industry in North Carolina and also specializes in high-rise and multi-family commercial work.  They promote cross-training in their crews between commercial and residential work to benefit their customers.  He brings new energy and focus to the Board for the next stage of enhancing the mission and vision identified this past April.

Kirby Justesen returns to the CFA Board after last serving in 2001.  He has led the CFA as chair of the technical committee for many years and has been a voting member of ACI 332 through the critical development stages of the initial standard document.  Kirby has a strong focus on complicated residential foundation construction given the high-seismic region in which his companies operate.  Formerly president of Formco Foundations, he now serves as sales and project manager for this new partnership established in 2011.  His return to the Board brings a strong focus to CFA direction for West Coast and Mountain regions.

Leaving the Board after successful and dedicated terms  were Bruce Neale of Modern Foundations, Woodbine, Maryland (18 years); Mark Saldana of Saldana Concrete, Rice, Minnesota (9 years); Mike Hancock of Basement Contractors, Edmond, Oklahoma (9 years); Neal Weiler of Weiler Walls, Denver, Pennsylvania (3 years) and James Dean of Beran Concrete, Wichita, Kansas (2 years).

 

About the CFA

The CFA was established in 1974 for the purpose of improving the quality and acceptance of cast-in-place concrete foundations. Since that time, the CFA has transitioned to a network where foundation contractors can focus on building better businesses and improving the recognition of performance in codes and standards.  CFA is developing an insurance captive for its members and has maintains a fall protection task force working with its members to achieve compliance with OSHA’s current regulations as well as improving the industry position on fall protection.  CFA also provides the only certification for the industry in the form of an individual technician rating and a company-rating program for greater quality assurance.  Additionally, CFA provides promotional materials, educational seminars, opportunities for networking, and technical meetings for members throughout the U.S. and Canada.

The CFA represents the interests of its members and the industry on several code and regulatory bodies, such as ACI 332 the American Concrete Institute’s committee responsible for the creation of the “Residential Concrete Standard” and the International Residential Code (IRC) as well as concentrated efforts with the National Association of Home Builders (NAHB) and Portland Cement Association (PCA). The CFA produces industry-shaping documents including the CFA Standard for Residential Poured Foundations and the CFA Cold Weather Research Report. For more information about CFA, please visit www.cfawalls.org.

Marvin Earl Bolten Obituary

The CFA was notified of the passing of a former active member from Texas this summer.  Many long-time members will remember the energy of Marvin Bolten.

Barry Herbert of Herbert Construction Co. writes, “When I first joined the CFA in 1991, Marv was active and if I remember correctly, he was on the board the first year I was. Gary Bromley (ABI Corp.) arranged for us to have a booth at several NAHB annual shows and Marv worked one or more of them when I did.  That would have been in the early eighties.  I remember him as being very likable and outgoing.”

Marvin’s Obituary as published in the Star-Telegram on August 16, 2013 reads:

Marvin Earl Bolten passed away Monday, Aug. 5, 2013. Memorial service: 10 a.m. Saturday, Aug. 17, in Laurel Land Memorial Chapel. Marvin was born in St. Joseph, Mo., to Marvel and Earl Bolten. He was the oldest of five children and was preceded in death by his mother and father. He passed away in Sturgis, S.D., where he loved to travel every year with his brothers and friends. Marvin was a journeyman carpenter with Carpenters Union Local 1822. Marvin went on to start Metro Basements and Waterproofing and was a pioneer in the building of underground homes and basements in Texas. Mr. Bolten also served his country as a US Marine and Navy Seabee. Marvin was loved by his family and many friends, who will miss him dearly. He possessed a passion for traveling the world never meeting a stranger. Marvin was always planning his next adventure in life. Survivors: His wife, Vicki Bolten; daughter, Jenna Renee Hill of Rhome; son, Jeff Conley of Houston; grandchildren, Harlin “Trey” Hill III and Laurel Hill; brothers, James Bolten of Cleburne, John Bolten of Burleson and Michael Bolten of St. Joseph, Mo.; sister, Marvel Michler of Crowley; and many nieces and nephews who loved Marvin very much.

ThermalDrain™ Chosen as Finalist for 2013 RISE® Durable Product Awards

Cleveland-based GMX, Inc.’s ThermalDrain nonwoven drain protection board is a finalist for the 2013 RISE Durable Product Awards. The award recognizes and rewards innovation in new, durable products that utilize nonwoven fabrics in a way that expands the usage of nonwovens in the consumer or industrial marketplace.

 

Cleveland, Ohio – GMX, Inc.’s premier recycled nonwoven drain protection board, ThermalDrain, is a finalist for the 2013 RISE (Research, Innovation & Science for Engineered Fabrics) Durable Product Awards. The award recognizes and rewards innovation in new, durable products that utilize nonwoven fabrics in a way that expands the usage of nonwovens in the consumer or industrial marketplace. The winner will be announced on October 3 at the annual RISE Conference held in Denver, Colo.

ThermalDrain is a user-friendly synthetic protection board that is more durable than fiberglass and provides excellent drainage. It is also the only protection board that provides an R-Value in addition to containing 70 percent post-consumer recycled content. ThermalDrain’s patented design provides consumers with a flexible, easy-to-bend protection board that is environmentally friendly and will not irritate your skin. It is designed to be used in conjunction with spray-applied waterproofing. DryDog Barriers, LLC was recently acquired by GMX, Inc., a wholly owned subsidiary of Garland Industries, Inc. and manufacturer of commercial and residential waterproofing systems. The DryDog line of products and services is being integrated into GMX’s line of high-performance, below-grade waterproofing products.

“It is an honor to have one of our premier products selected as a finalist for the RISE Durable Products Award. At GMX, we pride ourselves on developing innovative and versatile products that meet the strict performance demands of our customers’ diverse application requirements,” explains Lindsay Castles, vice president of GMX, Inc.

The annual RISE conference is sponsored by the Association of the Nonwoven Fabrics Industry (INDA®). Founded in 1968, INDA member companies represent the entire nonwovens value-chain. From raw materials and roll goods producers, to machinery manufacturers and converters, to brand owners, INDA works every day to fulfill their mission of “advancing nonwovens worldwide for the benefit of our members.” INDA achieves that by providing world-class networking events, industry leading education, accurate research and industry information, on-demand consultation and strong advocacy on key issues facing the nonwoven fabrics industry.

GMX, Inc.^® is a manufacturer and supplier of below-grade waterproofing products for the building envelope and is the only ISO 9001: 2008 certified manufacturer of residential and commercial waterproofing systems. GMX high-performance products are engineered to provide superior protection against water intrusion and degradation, guarding your building and its contents from moisture. Our continued investment in research and development and improvement to manufacturing facilities and processes guarantees superior product consistency and performance under the harshest of waterproofing conditions. GMX is headquartered in Cleveland, Ohio.

For more information, contact your local GMX Representative at 866-228-7743 or visit http://www.gmxwaterproofing.com.

Irving Equipment Announces Arrival of Loop Belt® Truck Mounted Conveyors

Irving Equipment is pleased to announce the arrival of Loop Belt® truck mounted conveyors. Offering

the LB32T4 and LB40T5 models, they are 100% designed, patented, and built in the US. Boasting

several brand new patents on each model, with others pending, both units offer advantages and

applications that outperform other competitive placing systems. Loop Belt® is committed to high

performance, with service engineers and technicians that are considered to be some of the best in the

world for conveyor systems. Additionally, LB has design engineers with considerable experience in

conveyor system design.

 

The LB32T4 has a horizontal reach of 32 meters and has four telescopic sections. The 18” wide

conveyor will handle 4” aggregates and up to 360 cubic yards per hour. This is ideal for wind energy

projects and other low slump foundation mixes.

The LB40T5 has a horizontal reach of 40 meters and has five telescopic sections. The 20” wide

conveyor will handle aggregates up to 6”. All transition points were designed to run clean and transfer

material smoothly with up to 480 cubic yards per hour capacity.

 

Both models have the capability of set-up in an area with less than 18 feet of overhead clearance.

The feeder “pins” to the transfer turret, allowing for easy removal for maintenance and service. The

upper conveyor section is fixed at a negative angle to provide a better belt transition and material flow

into the transfer area. A free-floating hinge and control arm allow for full retraction of the hydraulic

cylinders. Feed conveyor contact with the ground is under self-weight only. The hydraulic cylinder

pressure is monitored and switched to allow for full use of the telescopic conveyor, while feed

conveyor is securely in contact with the ground. Minor variations in machine leveling, due to outrigger

pad settlement, are automatically compensated for via control arm float position.

 

Boom and feeder functions are fully proportional for precise movements using Hawe valves and radio

remote controls; single and double joystick models. The backup handset controller, also proportional,

comes with hard wire capacity. The outriggers are completely hydraulic for easy and safe operation. No

manual pulling or maneuvering is required to set-up outriggers; a bonus on uneven ground. The modern

lattice boom sections are fabricated from high strength steel that is stronger and lighter than most

aluminum booms. This lightweight design allows for legal axle weights in most states. The Loop Belt®

hydraulic system is very efficient, thus it requires relatively low power and low fuel compared to other

placing methods. Other standard features are: a clean-up washers system, hydraulic oil cooler,

toolboxes, tool kit, portable cable adjuster kit, and much more.

 

The traction-drive frame structure is built into the base section for increased strength and rigidity.

Mechanical components for the traction-drive are located outside the base section, where they are

easily removable for maintenance and service. The traction-drive rope system is simplified with fewer

sheaves and shorter wire rope lengths.

Oil on Rebar

by JAMES R. BATY II

As published by Concrete Contractor Magazine.
Created: August 21, 2013

The Concrete Foundations Association explains the code reference and common misconceptions regarding oil on rebar for residential concrete.

Question: On several of our most recent residential projects, the inspector in our area has been complicating our pour schedule when finding form oil over-sprayed on the rebar in our walls. Is it our misunderstanding that form oil on rebar shouldn’t pose a problem to the wall performance or the acceptance of our pre-pour inspection? – Concrete Contractor (Ohio)

Answer: Your question addresses a common problem across the construction industry that is created as codes are modified over time. Regardless of the comparison of residential to commercial work, code edition after code edition presents challenges to professionals throughout the industry to remain current with the latest acceptable practices and minimum requirements.

For the complete article, visit the article at www.forconstructionpros.com.

For more information on the codes affecting this issue or the research, contact Jim Baty, CFA Managing Director.

Schwing SPTO 4000 is a Valuable Tool for Concrete Pumpers and Contractors

ST. PAUL, MN.—August 5, 2013. Schwing’s SPTO 4000 is a compact package that provides high volume performance for commercial work. This unit utilizes the truck’s engine to power the concrete pump, providing impressive output and distance capabilities. The SPTO 4000 pump kit handles concrete mixes with up to 2.5-inch aggregate for high utilization on commercial projects. The economical single-axle truck adds to the overall value of this new combination to provide a faster return on investment.

The pump kit is the proven all-hydraulic, open loop Schwing design requiring less horsepower for greater fuel economy. The twin-cylinder pump provides up to 170 cubic yards per hour output with the standard 2023H-6 120/80 MPS. It features  the proven, low maintenance  M Rock Valve that is excellent for high pressure pumping. The M Rock utilizes an axial roller bearing that enables it to to shift with less friction in high pressure pumping situations. An optional pump kit boosts output to 208 cubic yards per hour.  Both pumps have the ability to switch in minutes from high volume to high pressure for added distance. The SPTO 4000 can be easily paired with Schwing’s octagonal mast system and separate placing booms for engineered projects with high volume and high-pressure distance pumping requirements.

The SPTO 4000 has been engineered for maximum performance on the job with storage for up to 500-feet of hose. Clamps, elbows and gaskets are easily stored in a standard clamp basket. A sealable 36-inch toolbox is also included to keep other items organized and secure.

Standard equipment includes sideboards and decking, water tank with pump, an auxiliary hydraulic circuit and 100-foot cable operated remote control. Factory installed options include vibrator, auto-greaser, dual display stroke counter, water tank heater and overhead pipe rack.

Owners of Schwing truck engine powered pumps report easier maneuverability on the job site and maintenance savings with one engine instead of two. “The SPTO is a great concept that provides high utilization. We find it is a simple effective tool in our market, “ according to Wayne Bylsma, owner of Cherokee pumping located in the Atlanta area.

For more information on the SPTO 4000, contact Schwing at 888-SCHWING or visit http://schwing.com/.

 

About Schwing America

Schwing America is a member of the Schwing Group, a worldwide designer, manufacturer and distributor of premium concrete production and handling equipment, headquartered in Herne, Germany. Schwing, committed to supporting its customers’ success, excels in producing high quality concrete equipment used in even the most demanding construction applications, through innovative engineering, premiere manufacturing and optimum after-sales support. Schwing America, located in St. Paul, Minnesota, offers industry leading concrete pumps, truck mixers, batch plants, reclaimers and genuine parts for distribution in North and South America. http://schwing.com

2013 Projects of the Year: Commercial/Multi-Family

Commercial/Multi-family

Clifton Pointe

MPW Construction Services

Lakewood, Ohio

The final project of the year recipient for 2013 is in the category for commercial or multi-family structure by Modern Pored Walls, Inc.  The 12,600 sq.ft. Clifton Pointe is a three building, seventeen-unit development sitting on a ½-acre site, 150 feet above a river.  The challenge of this project included twenty-five different elevations with footing widths ranging from 4-ft to 12-ft wide.  Continuous #7 bars were required in all footings.  Built into the side of a cliff, some walls were required to be 17-ft tall and at each end of the building a 17-ft tall fireplace was cast.

While digging foundations, the engineer decided the original design would not work and the entire structure changed and we adapted during excavation.  The project required large mats of steel and 14 different concrete placements by pump.  In all, more than 2,000 man-hours were logged on the project for our scope of excavation, foundations, flatwork and spoils removal.

Sean Smith, sales manager for MPW was asked how they approached the project with so much complexity and restricted access.  “For starters, we estimated and completed this project based on time and materials.  There were far too many complexities for an accurate number to protect both our company and our client.  This was especially rewarding when the project design changed in the middle of excavation.  Ultimately, our client realized that because of the multiple projects we have completed with them, they knew we would be capable of building the project and they were comfortable that we would help make sensible foundation designs where possible.  A true collaborative spirit and arrangement that resulted in a very quality project.”

Project Specifications:

• Total Sq. Ft. Plan: 12,600
• Total Lin.Ft. Wall: 1,445
• Concrete Used: 375 cu.yds. (walls), 235 cu.yds. (footings)
• Steel Used: 8 tons (walls), .5 tons (footings)
• Wall Heights: 6 ft. to 17 ft. (ranging)
• Wall Thickness: 8″ to 14″ (ranging)

2013 Projects of the Year: Single Family Residence 2,000-5,000 sq.ft.

Single Family Residence 2,000-5,000 sq.ft.

Private Residence

Herbert Construction

Marietta Georgia

The mid-size foundation winner this year is a private residence in Marietta, Georgia by Herbert Construction Company.  While the idea of the mid-size residence is often pictured with regular geometry and relatively plain structural conditions, the building sites in and around Marietta add significantly to any project.

The complexity on this project was defined by the five footing sizes the engineer specified ranging from 10-in. x 20-in. to 16-in. x 48-in..  Each footing was heavily reinforced and included a lug 130 feet long, 16-in. deep x 14-in. wide extending below the footing for sliding restraint.  Seven continuous vertical steps in the footing were also required and a total of twenty one wall heights were encountered.  Due to poor soil conditions, fifty piers were drilled prior to placing rebar and concrete in the footing.

The design called for 119 vertical feet of angled corner as well as a section of curved wall.  The most complex walls, however, were the 17 and 18-ft tall walls with double matt #5 rebar at 12-in. o.c. in each direction.  These walls sat on footings containing eight #5 continuous rebar and #5 cross bars at 12-in. o.c. as well as #5 “L” dowels at 11-in. o.c. at each face of the wall.  Under these footings, the lug was 16-in. x 14-in. with two #4 continuous rebars and #4 vertical lug bars at 18-in. o.c.

Amanda Morris, vice president of operations for Herbert Construction stated, “Total station was critical to this project as was planning the details for the preparation of the crew.  The layout required 99 points or corners for such a relatively small plan.  The total station also aided in top of wall checking and all points and conditions were checked three and four times to maintain accuracy.”  The builder for this project validated this aspect of the delivery stating; “Starting the house with a correct foundation is the most important part of the homebuilding process.  Herbert Construction Company’s technology ensures an accurate layout of my complex foundations.  I know that they will put in a high quality basement.”

Project Specifications:

• Total sq. ft. plan: Not Provided
• Total Lin. Ft. Wall: Not Provided
• Concrete Used: 165 cu.yds. (walls), 81 cu.yds. (footings)
• Steel used: 4.1 tons (#4 walls, lugs and footings), 5.73 tons (#5 walls, lugs and footings)
• Wall Heights: 4 ft. to 18 ft.
• Wall Thickness: 8″ to 20″

2013 Projects of the Year: Single Family Residence < 2,000 sq.ft.

 

Single Family Residence <2,000 sq.ft.

Private Residence

Doggett Concrete

Charlotte, North Carolina

Demonstrating that small projects are many times as challenging as the monster foundations is this private residence by Doggett Concrete, Inc. of Charlotte, NC.  Located in Charlotte, this 1,200 square foot basement was combined with a 2,500 crawl space and was part cast-in-place and part concrete masonry.  Footings for the crawl space and basement were 24 to 30 inches deep and 36 inches wide, far greater than the standard footing required for most soil conditions.  Multiple pier footings were required ranging from 12 to 18 inches thick.

The project requirements included a safe room of nearly 1,000 square feet.  The footings for this area were constructed with doubled dowels to tie into the double mat rebar required in the walls.  The double mat steel allowed ledges to carry the concrete “roof” and the first floor framing.  The safe room was topped with an 8-inch thick concrete “roof” or lid that doubled as the floor for an indoor firing range above. The partial basement of this project eliminated some excavation and disturbance of the lot and yet the plan still required over 200 tons of gravel to bring the garage and basement slabs up to sufficient grade.

Doug Doggett, president of Doggett Concrete was asked why this “small” project was so unique.  “This house was built at The Sanctuary in Charlotte, a combination of lake-side living and natural preserve where only 20% of all 1,300 acres will ever be allowed for home construction.  This makes homeowners, homebuilders and foundation contractors especially responsible for their building practices.  It is largely for this reason that builders have been selecting our services because of our cross training in multi-family and high-rise commercial work.  This builder chose us for our experience in typical and over-the-top projects.  Our customers come to us for “what-if” scenarios that we make into reality.”

Project Specifications:

• Total sq.ft. Plan: 1,200 (basement), 2,500 (crawl space)
• Total Lin.Ft. Wall: 954
• Concrete Used: 93 cu. yds. (walls & columns) 61 cu. yds. (slabs), 90 cu. yds. (footings)
• Steel Used: 2.5 tons (walls), .29 tons (slabs), 2 tons (footings)
• Wall Heights: Not provided
• Wall Thickness: 12″ to 16″

2013 Projects of the Year: Above Grade Concrete Home

Above Grade Concrete Home

Private Residence on Lake Hiawasee

Basement Contractors

Lake Hiawasee, Edmond, Oklahoma

 

Receiving the top recognition for above grade concrete homes this year is a private residence on Lake Hiawasee in Edmond, Oklahoma by Basement Contractors, also of Edmond, Oklahoma.  The home is a 3,758 square foot, sophisticated architectural and construction challenge that offers many new perspectives on a cast-in-place concrete residence.  The challenges of this project were many including the tops of all walls sloping from 24 to 32-feet.  Two structural decks, a landing for a staircase and an internal stair support wall with embedded steel were additional challenging concrete features.  The owner asked that all electrical conduit be placed in the concrete walls.  Despite the heights of the walls, the team delivered the challenge keeping all interior wall surfaces clean and crisply modern.

The walls were also built as insulated sandwich walls.  This method of wall construction places high-performance insulation between two concrete layers during the single monolithic pour.  It further complicated the forming requiring the electrical boxes to be pushed back into the foam to fit within the concrete layer.  The contractor used a non-stop scaffolding system due to the height of the walls as it permitted a working height of up to 40-feet, if needed.  An 8-foot walkway was created all the way around the house with the scaffolding.

Additional features for the concrete structure included footings that stepped three times with a 6-foot step height at each location.  The house also features cast-in-place benches around a cast fire pit with oblique angles in all directions; cast-in-place display for art work bed, structural concrete decks and structural concrete headers.  The stair landing is also cast-in-place with cantilevered steel treads.

Mike Hancock, president for Basement Contractors felt this was one of the most challenging concrete homes he had produced.  “I think the real success for us in this home was in our ability to engineer the structure as well as build it,” states Mike.  “While we are involved in a surprising number of homes with basements in a state where few would believe basements possible, we also have found that many of our customers see the advantages of the above-grade concrete home for durability and security.  It has become one of our distinguishing services in the market.”

Project Specifications:

• Total Sq.Ft. Plan: 3,758
• Total Lin. Ft. Wall: 578
• Concrete Used: 282 cu.yds. (walls), 65 cu.yds. (footings)
• Steel Used: 10 tons (walls), 5 tons (footings)
• Wall Heights: 24 ft. to 32 ft. (sloping)
• Wall Thickness: 8″ to 12″