PROJECT ADDRESS
3.
3.
4.
1.
4.
1.
MODULARITY DIAGRAM
THE TREAD NOSINGS. BARRIERS MUST BE PROVIDED UNDERNEATH STAIRS TO MAINTAIN 80" VERTICAL CLEARANCE.
FOR STAIRS SERVING AN OCCUPANT LOAD OF MORE THAN 50, STAIR TREADS MUST NOT BE LESS THAN 44" IN WIDTH.
EVERY LANDING SHALL HAVE A MINIMUM DEPTH, MEASURED PARALLEL TO THE DIRECTION OF TRAVEL, EQUAL TO THE WIDTH OF THE STAIRWAY OR 48". STAIR RISERS AND TREADS MUST BE OF UNIFORM SHAPE AND SIZES.
STAIR RISERS MUST BE AT A MAXIMUM OF 7" AND A MINIMUM OF 4". RISERS ON ACCESSIBLE EGRESS PATHS MUST BE CLOSED AND SOLID. THE TREADS OF EXTERIOR STAIRS MUST BE MARKED BY A CONTRASTING STRIPE, BETWEEN 2" WIDE AND 4" WIDE.
STAIR TREADS MUST BE AT A MINIMUM OF 11" AND BE MEASURED HORIZONTALLY. THE NOSINGS OF TREADS SHALL HAVE A MAXIMUM PROJECTION OF 1 1/4".
GUARDRAILS MUST BE 42" HIGH OR MORE, MEASURED VERTICALLY AS FOLLOWS: FROM ADJACENT WALKING SURFACES. ON STAIRWAYS, FROM THE DISTANCE BETWEEN THE LEADING EDGES OF THE TREAD NOSINGS. OPENINGS IN GUARDRAILS MUST BE SMALLER THAN 4".
HANDRAILS, MEASURED ABOVE STAIR TREAD NOSINGS AND ADJACENT WALKING SURFACES, MUST BE BETWEEN 34" AND 38".
HANDRAILS MUST BE UNIFORM IN SIZE AND SHAPE, AND AT A CONSISTENT HEIGHT.
CIRCULAR PROFILE OF HANDRAILS MUST BE BETWEEN 1 1/4" AND 2" IN DIAMETER.
HANDRAILS MUST EXTEND 12" PAST THE TOP TREAD, AND THE DEPTH OF ONE TREAD + 12" PAST THE BOTTOM OF THE STAIR. HANDRAILS MUST RETURN TO A WALL OR GUARD OF THE WALKING SURFACE. THE CLEARANCE SPACE BETWEEN A HANDRAIL AND WALL OR GUARD MUST NOT BE LESS THAN 1 1/2".
1 WINDOW 2 WINDOW 3
WINDOW SCHEDULE
25tekcoP
0010302B >seirav<>seirav< 5gniwS >seirav< >seirav< 0010302B >seirav<>seirav<71gniwS >seirav< >seirav< 0010302B >seirav<>seirav< 6gniwS >seirav< >seirav<
8gniwS
