ASTM E1155

Full Name

ASTM E1155 – Standard Test Method for Determining FF Floor Flatness and FL Floor Levelness Numbers


This test method 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) using the inch-pound system of units.


Ff; FF Flatness; Fl; FL Levelness; floor; floor profile; floor profilometer; F-Number

ASTM E1155 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM E1155 standard.

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