Short, Easy Dialogues
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Published in 2014, this revision updated prior versions (347R-03) to incorporate modern materials, digital design methodologies, and increased safety protocols, particularly regarding lateral pressure on vertical formwork. The document addresses everything from design loads and deflection tolerances to formwork materials and field construction practices.
A contractor wants to pour a 20-foot-tall foundation wall at 8 feet per hour. The concrete temperature is 50°F. Using the outdated 2003 guide, the calculated pressure might be 1,200 psf. Using ACI 347R-14’s updated SCC and high-strength adjustments, the pressure calculates to 1,800 psf. Without the PDF, the contractor would under-design the ties and walers, leading to a blowout. aci 347r14 guide to formwork for concrete pdf
A spec calls for "ACI 347 Class A" form finish. The PDF defines Class A as requiring plywood with a specific face veneer, sealed joints, and maximum deflection of L/360. A superintendent who has memorized the table in the PDF can immediately reject a damaged form panel. Published in 2014, this revision updated prior versions
Why Every Concrete Professional Needs the PDF Version The concrete temperature is 50°F