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Title: Movements That Affect Tolerance Measurements

Author(s): Bruce A. Suprenant and Ward R. Malisch

Publication: Concrete International

Volume: 38

Issue: 7

Appears on pages(s): 27-32

Keywords: slab, slope, shortening, temperature

DOI:

Date: 7/1/2016

Abstract:
As-built measurements are used to determine if concrete construction is in compliance with specified tolerances. But concrete members move after concrete has hardened and most of these movements occur over a period of months or years. The article discusses requirements of ACI 117-10 for surface measurements of slabs and suspended slabs, and asks why similar timing restrictions are not used for other compliance measurements.