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PHYSICAL CHARACTERISTICS – CAST IRON



            DOME GEOMETRY
             ADA  (R305.1.1) specifies truncated domes shall have a base diameter of 0.9” minimum,
             a top diameter of 50% of the base diameter minimum, and a height of 0.2”.













            DOME SPACING




               ADA (R305.1.2) specifies truncated
               domes shall have a center-center
               of 1.6” to 2.4”




















           CAST IRON WET-SET
          Material – Gray Iron


          ASTM C 1028                   Slip Resistance                      Dry-.948        Wet-1.099
          ASTM A 48                     Tensile Strength                     35,900 psi

          ASTM C 501-84                 Abrasion Resistance                  88 (lower number = better wear properties)
          ASTM D 695                    Compressive Strength                 81,700 psi
          NCHRP Procedure               Impact Resistance                    No substantial damage
          T4-33
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