There is no F-number equivalent to any straightedge spec. The ACI/CSA F-Number System applies to 99% of all floor slabs – all floors that support random traffic be it vehicular or pedestrian traffic. F-Numbers are linear, so an FF 20 is twice as flat as an FF 10, but only as half as flat as an FF 40. The higher the F-Number, the bettr the characteristic of the floor. for prostatitis, 344-345 Dipstick testing for glucose, 92 for hematuria. The new standards include two F-Numbers: FF for flatness and FL for levelnessįlatness relates to the bumpiness of the floor, while levelness describes the local tilt or pitch of the slab. F-Number replaces the familiar “1/8 inch in ten feet” type specs that had proven unreliable, unmeasureable and unrealistic. Briggs and Stratton 10A902-2272-E1 Exploded View parts lookup by model. The F-Number System is the American Concrete Institute (ACI117) and Canadian Standard Association (CSA A23.1) standard for the specification and measurement of concrete floor flatness and levelness.
Testing labs, building owners, developers, contractors, universities, research institutions and government agenices on six continents choose the Dipstick because it producecs the most accurate and repeatable flatness/levelness data. correlation between dipstick positivity for protein and protein concentration in urine, causes of hematuria, and causes of hematuria by age and gender.
Floor Slab F-Number Determinations performed using a FACE CO 2272 Digital Floor Profiler.