Specification synopsis: This specification provides standard tolerances for concrete construction. This document is intended to be used by specification writers and ACI committees writing standards asthereference document for establishing tolerances for concrete construction.
Commentary synopsis: This report is a commentary on the Specifications for Tolerances for Concrete Construction and Materials (ACI 117). It is intended to be used with ACI 117 for clarity of interpretation and insight into the intent of the committee regarding the application of the tolerances set forth therein.
Keywords: construction; concrete; drilled piers; formwork; foundation; masonry; mass concrete; pier; precast concrete; prestressed concrete; reinforced concrete; reinforcement; specification; splice; tolerances.
Note to Specifier: This Specification is incorporated by reference in the Project Specification using the wording in P3 of the Preface and including information from the Mandatory Requirements and Optional Requirements following the Specification.

PREFACE
P1. ACI Specification 117 is intended to be used by reference or incorporation in its entirety in the Project Specification. Do
not copy individual Parts, Sections, Articles, or Paragraphs into the Project Specification because taking them out of context
may change their meaning.
P2. If Sections or Parts of ACI Specification 117 are copied into the Project Specification or any other document, do not refer
to them as an ACI Specification because the specification has been altered.
P3. A statement such as the following will serve to make ACI Specification 117 a part of the Project Specification: “Work on
(Project Title) shall conform to all requirements of ACI 117-06 published by the American Concrete Institute, Farmington
Hills, Michigan, except as modified by these Contract Documents.”
P4. The language in each technical Section of ACI Specification 117 is imperative and terse.

Download ACI 117-06 to read more