CRSI Technical Note CTN-G-4-22 - 8 pp; 2022
The tolerances in ACI 117 help ensure a structure will have adequate strength and will perform as intended even though the shape, dimensions, location of the reinforcing bars, or other physical characteristics of the completed structure do not coincide exactly with those on the construction documents prepared by the licensed design professional (LDP). Tolerances have a direct impact on constructability and are needed to make reinforced concrete construction economically possible.
Problems can occur even when specified tolerances are presumably met. This Technical Note provides guidelines to identify tolerance conflicts commonly encountered in the construction of steel reinforced, cast-in-place concrete structures. Recommendations on how to possibly avoid such conflicts are also given.