Part 4A


When concrete is the finish material in a building or serves as the substrate for other work, it is one of the primary concerns of architects. The tables in this part provide useful information for specifying and inspecting both structural and finished concrete work.

Standards for Concrete Tolerances

Understanding industry standard tolerances for concrete work is critical not only for inspecting structural work but also for developing appropriate details and specifications for other construction that uses concrete as a substrate. The following tolerances are considered “industry standard” and are typically made a part of most specifications by reference to ACI-301. If more exact tolerances are required, they must be specifically ...

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