Bruce Suprenant, Technical Director, The Voice Newsletter July 2016 Shrinkage and temperature reinforcement requirements for design of reinforced concrete structures have been included in the ACI building code since 1928, and haven’t changed much in nearly 85 years. The ACI 318-14 Commentary states that the amounts of shrinkage and temperature reinforcement specified for deformed bars and...

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Bruce Suprenant, Technical Director, The Voice Newsletter June 2016 Shrinkage and temperature reinforcement requirements for design of reinforced concrete structures have been included in the Know the Design Requirements Operable partitions are those that can be quickly put in place or removed and stored to provide flexibility in the spaces typically used for meetings or social functions. Th...

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Bruce Suprenant, Technical Director, The Voice Newsletter May 2016 When is 24.88 equal to 25? The project specification required a specified overall value (SOV) for floor flatness of 25. F-numbers were measured within 72 hours in accordance with ASTM E 1155-14 “Standard Test Method for Determining FF Floor Flatness and FL Floor Levelness Numbers.” Unlike most ASTM standard test ...

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Bruce Suprenant, Technical Director, The Voice Newsletter, April 2016 We have been asked recently about how to join an ACI technical committee. This is a nice step forward from when we used to be asked: Why join an ACI committee?” Now that we passed the “why” hurdle, let’s tackle the “how” of ACI committee membership. The information presented is excerpted fr...

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Bruce Suprenant, Technical Director, The Voice Newsletter, February 2016 Most contractors are aware of the criteria established by ACI 117-15 “Specifications for Tolerances for Concrete Materials and Construction” for measuring floor surfaces “within 72 hours after completion of slab concrete finishing operations and before removal of any supporting shores.” The criter...

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