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ACI, ASCC team on Tolerances

Sources: American Society of Concrete Contractors, St. Louis

ACI 117 – Tolerances has become a joint American Concrete Institute and American Society of Concrete Contractors committee, tasked with collecting, developing, coordinating, and specifying construction and materials tolerances through liaison with other ACI committees and related industry organizations.

ACI and ASCC are major and minor sponsors of the joint committee, respectively. “In addition to committee assistance, ASCC will provide technical input during document review and be instrumental in selecting committee leadership,” says ASCC Technical Director and ACI 117 Vice Chair Bruce Suprenant.

The organizations have informally worked together on construction and materials tolerances for the past several years, he adds, noting, “From 2007-2011, ASCC supported ACI 117 with an $82,000 grant to complete ACI 117.1R-14 ‘Guide for Tolerance Compatibility in Concrete Construction.’ Being a joint committee will provide formal recognition to the efforts of both organizations with respect to their interest in tolerances.”

“Contractors can contribute a significant amount of data to the tolerances conversation, as they have the ability to measure their projects and share findings,” affirms ACI 117 Chair Eric Peterson of San Francisco-based Webcor Builders. “Only when we are able to determine what tolerances are practical can we accurately specify those numbers for the industry.”