Prior to the 2014 revision, lateral pressure formulas were based on traditional vibrated concrete. With the rise of Self-Consolidating Concrete (SCC) in precast and cast-in-place applications, ACI 347R-14 added significant guidance on how SCC exerts higher fluid pressures on vertical formwork until it gains initial set. Ignoring these updates could lead to catastrophic blowouts.

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: The formwork should be designed to resist overturning, sliding, and buckling.

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.

Disclaimer: This write-up is for informational purposes only. For actual design and construction, users should purchase and reference the official ACI 347R-14 PDF document from the American Concrete Institute.

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