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There has been a number of important changes included in the masonry codes and standards that will become referenced in 2009.
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The Concrete Reinforcing Steel Institute's (CRSI) new Products & Services catalog contains a multitude of resources for precast concrete producers and design and construction professionals who rely on reinforcement products and supplies. The catalog has ordering information on essential...
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How thick should concrete be to withstand four hours of temperatures of 2000 degree F without degrading or failing? The concrete barrier likely will be exposed to more than 2000 degrees F. The barrier would be more than 30 feet tall and more than 30 feet long. It will be outdoors and subject to...
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I have a customer who tore out a slab with delamination problems. He subsequently found some sections where the #4 bar had not bonded to the concrete at all. Naturally, he is assuming the concrete is "bad." Besides oil and rust what other reasons can explain the lack of...
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Our precast plant recently received a shipment of galvanized rebar for a state project. While examining the rebar, our inspector noticed that some bars had a gray coating, a king of mottled appearance. Is the presence of this coating a possible cause for rejection?