ASTM C502 - 09

    Standard Test Method for Wedging of Flat, Rectangular Ceramic Wall and Floor Tile

    Active Standard ASTM C502 | Developed by Subcommittee: C21.06

    Book of Standards Volume: 15.02


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    Significance and Use

    Tile are normally pressed in dies having true 90° angle construction. However, minor variations in die fill, compacting pressure, and heat treatment can result in finished tile with acute and obtuse angles. This out-of-squareness results in a difference in length of opposite sides, and the tile may have the appearance of a keystone or wedge.

    Excessive wedging presents difficulties in the installation of tile. This test method provides a means for determining the degree of wedging.

    1. Scope

    1.1 This test method covers the determination of the wedging or deviation from rectangularity of flat, rectangular wall and floor tile. The test method covers tile as defined in Terminology C 242.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C242 Terminology of Ceramic Whitewares and Related Products

    C499 Test Method for Facial Dimensions and Thickness of Flat, Rectangular Ceramic Wall and Floor Tile


    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/C0502-09

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