Title:
Concrete Q&A: Do Details in the Structural or Architectural Sheets Eliminate Tolerances?
Author(s):
Bruce A. Suprenant and Jim Klinger
Publication:
Concrete International
Volume:
45
Issue:
3
Appears on pages(s):
67-68
Keywords:
contractor, drawing, slab, column
DOI:
10.14359/51738696
Date:
3/1/2023
Abstract:
This month’s Q&A discusses a disagreement between a subcontractor and a general contractor (GC) on tolerances governing concrete work on the project. While the subcontractor believes that 1 in. tolerances in ACI 117-10(15) for horizontal deviations for edge-of-slab location and column location apply, the GC insists on a zero-tolerance condition illustrated in a detail drawing.
Related References:
1. ACI Committee 117, “Specification for Tolerances for Concrete Construction and Materials (ACI 117-10) and Commentary (ACI 117R-10) (Reapproved 2015),” American Concrete Institute, Farmington Hills, MI, 2010, 76 pp.
2. “Concrete Q&A: Allowable Tolerances for Suspended Slab Edge,” Concrete International, V. 40, No. 5, May 2018, p. 56.
3. “Constructability Series: Coordination and Completeness of Structural Construction Documents,” ACI On-Demand Course, www.concrete.org/store/productdetail.aspx?ItemID=WCEU2212&Format=ONLINE_LEARNING&Language=English&Units=US_Units.
4. CASE Guideline 962-D: “A Guideline Addressing Coordination and Completeness of Structural Construction Documents,” Coalition of American Structural Engineers, Washington, DC, 2020, 70 pp.