704.13.3.2 Primers, paints and encapsulants.
BC § 704.13.3.2
Where the SFRM is to be applied over primers, paints or encapsulants other than those specified in the listing, the material shall be field tested in accordance with ASTM E 736. Where testing of the SFRM with primers, paints or encapsulants demonstrates that required adhesion is maintained, SFRM shall be permitted to be applied to primed, painted or encapsulated wide flange steel shapes subject to the following conditions: 1. The beam flange width of such shape may not exceed 12 inches (304.8 mm); 2. The column flange width of such shape may not exceed 16 inches (406.4 mm); 3. The beam or column web depth of such shape may not exceed 16 inches (406.4 mm); and 4. The average and minimum bond strength values shall be determined based on a minimum of five bond tests conducted in accordance with ASTM E 736. Bond tests conducted in accordance with ASTM E 736 shall indicate an average bond strength of not less than 80 percent and an individual bond strength of not less than 50 percent, when compared to the bond strength of the SFRM as applied to clean uncoated 1/8-inch (3.2 mm) thick steel plate.
