Cast-in-place concrete stairs bear on a crushed aggregate base and compacted subgrade, featuring an expansion joint at the adjacent pavement. A 1.66-inch diameter stainless steel pipe handrail with a one-half-inch by one-and-one-half-inch stainless steel bar intermediate support post is embedded in the concrete or anchored to end posts with a flat cap. Troweled grooves with contrasting concrete stain are provided at each top approach and stair tread, paired with a stair nosing enlargement detail showing a one-inch reveal and one-quarter-inch radius. All stainless steel components require a flat finish.
EQUALLY SPACED 6' MAX. 36" 4" 12" FLAT TREAD PER PLAN TREAD PER PLAN 1/4" R 1.66" DIA. STAINLESS STEEL PIPE HANDRAIL TREAD PER PLAN RISER PER PLAN 12" CAST-IN-PLACE CONCRETE STAIRS EXPANSION JOINT CRUSHED AGGREGATE BASE COMPACTED SUBGRADE ADJACENT PAVEMENT PER PLANS HANDRAIL EMBEDDED IN CONCRETE, SEE DTL 4, THIS SHEET EXPANSION JOINT ADJACENT PAVEMENT PER PLANS 1/2" X 1 1/2" STAINLESS STEEL BAR INTERMEDIATE SUPPORT POST AS REQUIRED SEE ENLARGEMENT FOR TYPICAL CONDITION AT NOSING SLOPE TO DRAIN 2% MAX STAIR NOSING ENLARGEMENT 1" 1/4" RADIUS 2" GROOVES REQUIRED AT EACH TOP APPROACH AND EACH TREAD OF ALL EXTERIOR STAIRS AND UPPER APPROACH STAINLESS STEEL FLAT CAP AT HANDRAIL ENDS. ROUND EDGE 1/4", TYP. END POST - SEE PLAN ENLARGEMENT 36" EQ EQ 1/2" 1" REVEAL 12" FLAT R3" R3" 1/4" x 1/4" x 3/4" TROWELED GROOVES WITH CONTRASTING CONCRETE STAIN. PROVIDE COLOR CHART FOR REVIEW PRIOR TO CONSTRUCTING FIELD MOCK UP ALIGN WITH NOSE NOTE: SEE CIVIL DTL 03/C502 FOR STRUCTURAL DETAILING PLAN SECTION HANDRAIL ABOVE 1 1 2 " X 1 2 " S.S. BAR 1" X 1" S.S. TUBE END POST PLAN ENLARGEMENT 36" GROOVES SHALL EXTEND FULL LENGTH OF THE STEP OR UPPER APPROACH. 30° MAX NOTE: ALL STAINLESS STEEL TO HAVE FLAT FINISH
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