ASTM WK44968

    Revision of E1155 - 96(2008) Standard Test Method for Determining FF Floor Flatness and FL Floor Levelness Numbers

    (What is a Work Item?)

    Active Standard: E1155 - 14

    Developed by Subcommittee: E06.21 | Committee E06 | Contact Staff Manager


    1. Rationale

    E1155 was developed at a time when field measurement capabilities limited contractors to recording single point measurements by physically contacting the surface of a floor. The mere act of recording single point measurements is time consuming and only provides floor profiles in straight lines (two dimensions). Technology has advanced, now 3D laser scanning devices have become more affordable so that they might be deployed in a cost-effective manner on job sites. A 3D laser scanner can collect millions of measurements a second without ever physically touching the floor. This allows contractors to provide not just straight line floor profiles, but full 3D topographical maps of the floor which provide much more insight with regard to the overall flatness and levelness of the floor. With this type of visual deliverable, owners and contractors can quickly and easily identify areas where grinding and filling might be needed. This revision does not aim to dispute the validity and usefulness of FF and FL as they currently exist, rather to provide building owners and contractors with an option to specify a project deliverable which fully documents their floors in 3D.


    Ff; FF Flatness; Fl; FL Levelness; floor; floor profile; floor profilometer; F-Number; Flatness; Flooring/floor covering systems; Leveling characteristics;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Philip Lorenzo

    Draft Under Development