The Floor Flatness Report


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Title: The Floor Flatness Report

Author(s): Mark A. Cheek

Publication: Concrete International

Volume: 33

Issue: 1

Appears on pages(s): 35-39

Keywords: floor flatness, floor levelness, F-numbers, engineering report

Date: 1/1/2011

Floor profile finish quality has traditionally been specified by limiting the gap under either an unleveled or leveled 10 ft (3 m) straightedge. Some specifications still take this tolerance approach, even though there is no nationally accepted standard either for taking measurements or for establishing compliance of a floor profile. In many specifications, slab finish quality is not addressed at all. Use of a nonstandard test procedure and failure to specify floor profiles often lead to conflict and litigation. This article attempts to help designers interpret floor flatness reports.