Fire Resistance Ratings - ANSI/UL 263 Design No. X623 December 03, 1999 Ratings — 1, 1-1/2, 2, and 2-1/2 Hr, 3 Hr (See Item 3) 1. Steel Column — Min size W10x49. The column surfaces shall be free of dirt, loose scale and oil. Steel surfaces to be primed with polyamide-epoxy and zinc rich primers to an approximate dry film thickness of 0.003 in. 2. Glass Fiber Mesh — 6 in. wide, weighing 4.5 oz per sq yd, embedded at approximately mid-depth of mastic coating. Glass fiber mesh must be applied for the 1-1/2, 2, 2-1/2 and 3 hr ratings. 3. Mastic Coating* — Coating spray applied directly from containers to the appropriate thicknesses shown in the table below. Rating Hr Material Thickness In. 1 0.19 1.5 0.26 2 0.34 2.5 0.42 3 0.53 PPG INDUSTRIES INC — Type Pitt-Char XP. Investigated for Exterior Use. *Bearing the UL Classification Mark
Ratings 1, 1-1/2, 2, and 2-1/2 Hr, 3 Hr (See Item 3)
1. Steel Column Min size W10x49. The column surfaces shall be
free of dirt, loose scale and oil. Steel surfaces to be primed with
polyamide-epoxy and zinc rich primers to an approximate dry film
thickness of 0.003 in.
2. Glass Fiber Mesh 6 in. wide, weighing 4.5 oz per sq yd,
embedded at approximately mid-depth of mastic coating. Glass fiber
mesh must be applied for the 1-1/2, 2, 2-1/2 and 3 hr ratings.
3. Mastic Coating* Coating spray applied directly from
containers to the appropriate thicknesses shown in the table
below.
Rating Hr Material Thickness In.
1 0.19
1.5 0.26
2 0.34
2.5 0.42
3 0.53
PPG INDUSTRIES INC Type Pitt-Char XP. Investigated for Exterior
Use.
