Technical

Jim Klinger, Concrete Construction Specialist, The Voice Newsletter, April 2021 Full disclosure: This writer’s first experience with shotcrete was in 1987; when the general level of industry understanding of structural shotcrete was evolving, shotcrete wall reinforcement was typically limited to a maximum #5 bar size, and only a minimal use of reinforcing steel contact lap splices was all...

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Jim Klinger, Concrete Construction Specialist, The Voice Newsletter, March 2021 Veteran concrete contractors will tell you one of the worst parts of getting blindsided is that you never see it coming. And so it is with COVID-19. How many are there among us who left World of Concrete last year without collecting our personal copies of “The COVID-19 Owner’s Manual” that explains...

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Jim Klinger, Concrete Construction Specialist, The Voice Newsletter, February 2021 In his suspense novel Skyscraper, author Robert Byrne employs lead character Brian Mitchell, an intrepid Colorado-based consulting engineer, as a foil to introduce and explain a massive construction failure and its aftermath to a non-technical audience. To oversimplify enormously, Google Books advertises the nove...

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Jim Klinger, Concrete Construction Specialist, The Voice Newsletter, January 2021 Hotline Question “We have a project featuring a 6-inch thick concrete slab-on-ground over an 85,000 SF footprint of prepared subgrade. Reinforcing for the slab is plain welded-wire mesh (WWR 6x6). We installed the WWR using a lap splice of one square overlap, or 6 inches. The project inspector has rejecte...

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Bruce Suprenant, Technical Director, The Voice Newsletter, December 2020 You might not have met Jim yet, but you will. He has been assisting ASCC on developing company certification, especially related to the company certifications. And he is also involved in ACI committees for ASCC including: ACI 318A-General Concrete and Construction, ACI 134-Concrete Constructability and ACI/ASCC 117-Toleran...

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Bruce Suprenant, Technical Director, The Voice Newsletter, October 2020 For the past few years, ASCC has been reviewing literature on constructability, especially that from the Construction Industry Institute (CII). CII started their constructability efforts in the mid-1980’s and have continued with a number of publications. We also reviewed constructability publications by AISC, ASCE, AA...

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Bruce Suprenant, Technical Director, The Voice Newsletter October 2020 For the past few years, ASCC has been reviewing literature on constructability, especially that from the Construction Industry Institute (CII). CII started their constructability efforts in the mid-1980’s and have continued with a number of publications. We also reviewed constructability publications by AISC, ASCE, AAS...

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Bruce Suprenant, Technical Director, The Voice Newsletter, September 2020 Recently two Hotline inquiries were looking for concrete repair products; one project in Iowa and one in Colorado. They were looking for products to recommend to the owner and architect/engineer for approval. There are many different repair products on the market for a variety of uses in different durability requirements....

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Bruce Suprenant, Technical Director, The Voice Newsletter September 2020 Recently two Hotline inquiries were looking for concrete repair products; one project in Iowa and one in Colorado. They were looking for products to recommend to the owner and architect/engineer for approval. There are many different repair products on the market for a variety of uses in different durability requirements. ...

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Bruce Suprenant, Technical Director, The Voice Newsletter August 2020 Two studies -- “Impact & Control of RFIs on Construction Projects (2016)” and “The Impact of Rework on Construction & Some Practical Remedies (2012)” -- both by Navigant Construction Forum, provide quantitative insight into the harsh realities of two jobsite issues. Contact bsuprenant@asccon...

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