ACI 347R-14 references ACI 117 regarding tolerances for plumb, line, and level. The guide advises that forms must be built within tolerances slightly stricter than the final concrete requirement to account for movement during placement.
The is the industry-standard document published by the American Concrete Institute that provides comprehensive guidelines for the design, construction, and materials of formwork systems. Often searched for in its PDF format by engineers and contractors, this guide prioritizes three core objectives: safety, quality, and economy . Core Responsibilities and Collaboration aci 347r14 guide to formwork for concrete pdf