ASTM F-Number System
The test method in ASTM E1155 covers a quantitative method of measuring floor surface profiles to obtain estimates of the floor’s characteristic FF Flatness and FL Levelness Face Floor Profile numbers (F-Numbers).
Table 4.8.5.1-ASTM E1155 method
| Floor surface classification | Specified overall flatness SOF F | Specified overall levelness SOFL |
|---|---|---|
| Conventional | 20 | 15 |
| Moderately flat | 25 | 20 |
| Flat | 35 | 25 |
| Very flat | 45 | 35 |
| Super flat | 60 | 40 |
Table 4.8.5.1-ASTM E1155 method
The F-Speed Reader is simply walked along the floor between the start and stop points and the data collected digitally. At the end of a survey run the data is downloaded to a handheld device and then the next run can start. When the whole of the chosen floor area is surveyed, the handheld device is then connected to a laptop or PC and the survey data is downloaded to the F-Speed Reader program. At the touch of a button the data is analysed, the overall and local F-Numbers are calculated, and a results table is produced.
The table illustrated is from ACI 117-10 showing different Ff and Fl classifications
Related Documents
- Click Here to Download F-Number Further Explanatory Information
- Click Here to Download F-Number Classifications Table 4.8.5.1 from ACI 117-10
Quick and Accurate F Number Testing
Face Consultants compliance test concrete floor surfaces to ASTM E 1155 quickly and accurately.
Contact us now to book your survey.
Face F-Speed Reader
By using the F-Speed Reader, Face Consultants can quickly test your floor to the ASTM E1155 F-Number system.
F-Number runs being taken on site
The F-Speed Reader being used to collect data between the start and stop points for calculation of the overall and local F-Numbers.
Measurement Standards
TR34 4th Edition
The Concrete Society’s TR34 Free Movement (4th Edition) Classifications
(Current Version)
ASTM F Number System
Surface Regularity
can be checked to ‘BS 8204-2:2003+A2:2011’ straight edge specifications SR1, SR2 and SR3
TR34 3rd Edition
The Concrete Society’s TR34 Free Movement (3rd Edition) Classifications
(Previous Version)*
