Committee Mission: Collect, develop and specify tolerances and related information for concrete construction and materials through liaison with other ACI committees and related industry organizations.

Goals: 1) Draft a new document that addresses the compatibility between concrete and interface materials; 2) Draft new document that establishes a tolerance measurement protocol; 3) Revise ACI 117 Specification to eliminate the commentary; 4) Move tolerance acceptance criteria toward a statistical evaluation.

Chair: Michael Ahern

TAC Contact: Theresa Ahlborn

Upcoming Open Meetings:
117 Virtual Meeting - 3/30/2021 11:00 AM-EST-3:00 PM-EST - GotoMeeting
ACI Spring Convention 2021 - 3/30/2021 11:00 AM-3:00 PM - Virtual

Published Committee Documents:
• ACI SPEC-117-10: Specification for Tolerances for Concrete Construction and Materials (ACI 117-10) and Commentary-Reapproved 2015
• ACI PRC-117.1-14 Guide for Tolerance Compatibility in Concrete Construction
• ACI SPEC-117M-10 Specification for Tolerances for Concrete Construction and Materials and Commentary (Reapp 2015) (Metric)
• ACI SPEC-117S-01: Standard Specifications for Tolerances for Concrete Construction and Materials (Reapproved 2002) - Spanish Language
• ACI SPEC-117-10: Specification for Tolerances for Concrete Construction and Materials (ACI 117-10) and Commentary-Reapproved 2015

See all 117 Committee Documents...