The assembly consists of a one-and-a-half-inch diameter steel pipe handrail supported by vertical steel pipe posts spaced at a maximum of six feet on center. The top three inches of each vertical support are reduced in diameter to provide a continuous gripping surface for the handrail. The posts are secured into the concrete walk and curb using a two-inch diameter by twelve-inch long steel pipe sleeve cast into the concrete, with the rail inserted and the void filled with grout. The handrail includes a minimum twelve-inch extension beyond the top and bottom of the ramp, returning to the wall, guard, or landing surface. All welds are to be ground smooth and pits filled, with the assembly primed and painted unless noted otherwise.
1-1/2" PIPE STEEL HANDRAIL PRIMED AND PAINTED U.N.O. SPECIFICATIONS - GRIND ALL WELDS SMOOTH AND FILL ALL PITS 3" RAD. TYP. 12" MIN. BEYOND END OF RAMP @ TOP & BOT. 7-1/4" MIN. SEE STRUCT. 1-1/2" VERTICAL PIPE STEEL SUPPORTS @ 6'-0" O.C. MAX.. TOP 3" OF VERTICAL SUPPORTS SHALL BE SMALLER THAN HANDRAIL FOR CONTINUOUS GRIPPING SURFACE MIN. 12" HANDRAIL EXTENSION AT TOP & BOT. OF RAMP - RETURN TO WALL, GUARD OR THE LANDING SURFACE OR SHALL BE CONT. TO HANDRAIL OF AN ADJACENT RAMP RUN. CONC. WALK & CURB 2" DIA X 12" LONG STEEL PIPE SLEEVE CAST IN CONC. - INSERT PIPE-RAIL AND FILL W/ GROUT FOR FIXED RAIL 30" MAX. 34" - 38" 3" +/- 1" 3"
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