B. UNDERWRITERS LAB FIRE RATED ROOF & FLOOR TRUSS ASSEMBLIES

Restrained & Unrestrained 1, 1 1/2 & 2 Hour UL Assemblies

DESIGN UL  "P521" -- ROOF TRUSSES

DESIGN UL  "P523" -- ROOF TRUSSES

DESIGN UL "G540" -- FLOOR TRUSSES

DESIGN UL  "L549" -- FLOOR TRUSSES

        C. BasicWind Speed Chart For USA - Click On   "WindChart"

            D. Snow Drift LoadChart For USA - Click On  "SnowChart"