The Digital Construction Marketplace
Floor flatness (FF and FL) numbers explained.
Love this item?
Subscribe to download this item, and get 7 days of unlimited downloads - for free!
To download FF And FL Measurements Explained today just enter your email address!
What used to take me hours now takes me just minutes. I can plan and schedule my job again.
No longer am I searching the web for the right resource, files.construction has all of the documents I need to do my job.
Each of my teams now uses the same documents across their projects - keeps us all on the same page.
We used the checklists to implement a new quality program on my project site. We've reduced our deficiencies on average 25% since launching.
A whitepaper on how FF and FL measurements are used in constructions.
The F-Number system is a statistical method of evaluating horizontal concrete surfaces for flatness and levelness. The Face Company, in conjunction with ACI Committee 117, developed the basis for the system through the use of a patented continuous Profileograph machine. For a typical random traffic industrial or other similar floor slab there are two F-Numbers used to evaluate the floor flatness and levelness, FF and FL; respectively. FF (flatness) is most affected by the finishing operation. FL (levelness) is most affected by forming and strike-off. Both numbers are dimensionless and the higher the number the more accurate the floor construction.