Title:
Is the F-Number System Valid for your Floor?
Author(s):
Robert E. Loov
Publication:
Concrete International
Volume:
12
Issue:
1
Appears on pages(s):
68-76
Keywords:
concrete construction; concrete slabs; floors; measurements; tolerances (mechanics); Design
DOI:
Date:
1/1/1990
Abstract:
Reviews the basic assumptions (measurements are normally distributed random variables) of the F-number system for specifying and measuring floor flatness and levelness. Describes a simple statistical test for verifying the randomness of collected data. Reports the results of analysis of over 90 floor survey profiles that indicate that a majority of floor profiles do not pass the statistical test for randomness.