They are calculated using the standards set forth in astm e1155 which is the standard test method for determining f f floor flatness and f l floor levelness numbers the american concrete institute indicates acceptable ranges for flatness and levelness in aci 302 1 guide.
Floor levelness computer.
F numbers provide architects and contractors a method of determining the flatness and levelness of a concrete floor slab.
How to determine if a floor is level.
Computer programs to analyze and design slabs and other structures.
The following appendix is a discussion on floor flatness measurement methods and is provided for general information only 01 history of flatness and levelness measurement of concrete substrate surfaces to receive flooring.
Over time an unlevel subfloor could cause costly damage to the.
He was the owner and president of one of the southeast s largest concrete contractors.
Is a concrete construction consultant for structural services inc.
Floor flatness and levelness testing the complete.
Levelness how closely the floor conforms to the specified slope and flatness how much the surface deviates from a two dimensional plane have become important specifications in construction.