Architectural · A-WRZAR

Accessible Protruding Objects Cane Detection and Clearances

Elements

Columns Walls Doors Stairs Ramps Railings / Guards Floors / Slabs Foundations / Footings Entrances Roof / Floor Openings

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Accessibility requirements for protruding objects, cane detection zones, and wall or post mounted hazards. Objects mounted on walls or posts must maintain defined clearance ranges to protect visually impaired pedestrians from overhead and ground-level hazards. Cane detection areas extend up to twenty-seven inches above the finish floor, while overhead hazards require a minimum vertical clearance of eighty inches. Posts and pylons are restricted in size and spacing to ensure proper detection along pedestrian paths of travel.

FINISH FLOOR FINISH FLOOR CARPET 2 1 1:2 SLOPE MAX 2 1 . . 1/4" MAX. 1/2" MAX. AT 1:2 SLOPE . . 1/4" MAX. 1/2" MAX. AT 1:2 SLOPE FINISH FLOOR EVEN THRESHOLD . COMPRESSE D CARPET 1/4" MAX. BELOW THRESHOLD NOTE: CARPET SHALL BE SECURELY ATTACHED; HAVE A FIRM CUSHION, PAD OR BACKING OR NO CUSHION OR PAD; AND HAVE A LEVEL LOOP, TEXTURED LOOP, LEVEL-CUT PILE OR LEVEL- CUT/UNCUT PILE TEXTURE. THE MAXIMUM PILE HEIGHT SHALL BE 1/2 INCH A. THRESHOLD B. TRANSITION TYPE 1 C. TRANSITION TYPE 2 TRANSITION TYPE 1 OR 2 D. CARPET TRANSITION TYPE 1 E. CARPET TRANSITION TYPE 2 F. OPENINGS IN THE FLOOR DOMINANT DIRECTION OF TRAVEL . 1/2" MAX. LONG DIMENSION PERPENDICULAR TO DOMINANT DIRECTION OF TRAVEL NOTE: OPENINGS SHALL NOT ALLOW PASSAGE OF A SPHERE MORE THAN 1/2" DIAMETER, EXCEPT AT AN ELEVATOR DOOR THRESHOLD. HIGHER 27" OR 4" MAX. LOBBY 80" MIN. BELOW 27" OR ANY AMOUNT CANE RANGE MAX. 27". WALKING PERPENDICULAR TO WALL WALKING PARALLEL TO WALL PROTECT SHADED AREA FROM CROSS-TRAFFIC CANE DETECTION AREA MAX. 2' - 3" 80" . CANE RANGE THAN 27" WHEN GREATER OBJECTS MOUNTED ON POSTS OR PYLONS 12" MAX. POST MAX. 1' - 0" MAX. 1' - 0" 2' - 3" -80" 27"-80" THAN 12" GREATER POST POSTS POST-MOUNTED PROTRUDING OBJECTS OVERHEAD HAZARDS GUARDRAIL OR OTHER BARRIER HIGHER 27" OR 4" MAX. LOBBY 80" MIN. BELOW 27" OR ANY AMOUNT CANE RANGE MAX. 27". WALKING PERPENDICULAR TO WALL WALKING PARALLEL TO WALL PROTECT SHADED AREA FROM CROSS-TRAFFIC CANE DETECTION AREA MAX. 2' - 3" 80" . CANE RANGE THAN 27" WHEN GREATER OBJECTS MOUNTED ON POSTS OR PYLONS 12" MAX. POST MAX. 1' - 0" MAX. 1' - 0" 2' - 3" -80" 27"-80" THAN 12" GREATER POST POSTS POST-MOUNTED PROTRUDING OBJECTS OVERHEAD HAZARDS GUARDRAIL OR OTHER BARRIER NOTE: A. TOP AND BOTTOM OF EACH STAIR RUN REQUIRES A WARNING STRIP ON THE TREAD. B. THE REQUIRED MINIMUM HANDRAIL EXTENSION AT EACH BOTTOM RISER IS 12" + THE DEPTH OF ON TREAD. C. 12" MINIMUM HANDRAIL EXTENSION REQUIRED AT EACH TOP RISER. D. 42" GUARDRAIL REQUIRED AT STAIRWAYS WITH 30" OR MORE ABOVE GRADE OR FLOOR BELOW. E. OPENINGS IN GUARDRAILS AND HANDRAILS SHALL NOT ALLOW A 4" SPHERE TO PASS THROUGH. SOLID RISER TYPICAL ROUNDED OR BEVELED NOSING, TYPICAL (a) (b ) (c) 1-1/4" MAX 30° MAX 1-1/4" MAX 30° MAX (d) (e) ROUNDED NOSING BEVELED NOSING 1/2" RADIUS MAX. 1/2" BEVEL MAX. WIDTH MIN 12" PLUS TREAD T 34" TO 38" T= TREAD WIDTH * * * * NOTE :EXTERIOR STAIRS ALL TREADS ARE TO HAVE WARNING STRIPES PER SEC1133B.4.4 1" MAX FROM EDGE 2" MIN TO 4" MAX WARNING STRIP 34" TO 38" 12" MIN. 34" TO 38" EXTENSION (PRIOR TO TURN) EXTENSION (PRIOR TO TURN) 27" MAX. 27" MAX. ALLOWABLE STAIR RISER PROFILES NOTE: 1. MOUNTING HEIGHT IS 34"-38" TO TOP OF GRIPPING SURFACE ABOVE STAIR NOSINGS. 2. SURFACE OF HANDRAIL SHALL BE SMOOTH WITH NO SHARP EDGES. 3. EDGES OF HANDRAILS HAVE A MINIMUM RADIUS OF 1/8" AND NOT ROTATE WITHIN FITTINGS CLEAR 1 1/2" MIN 1 1/2" MIN 3" MAX. 18" MIN. MAX 1 1/2" TO SUIT MIN 1 1/2" 2" MAX 1 1/4" MIN 2 1/4" MAX 2" MAX HANDRAIL NON-CIRCULAR CROSS SECTION NOTE: AT TYPE 2 AND 3: 4" MIN. - 6 1/4" MAX PERIMETER TYPE (A) 34"-38" ABOVE STAIR NOSING CLEAR 1 1/2" MIN 1 1/4" MIN - 34"-38" ABOVE STAIR NOSING 34"-38" ABOVE STAIR NOSING 2" MAX. 1 1/4" MIN - 2" MAX. 1 1/2" CLEAR 1 1/4" MIN - 2" MAX. 1 1/2" MIN CLEAR 2" MAX 1 1/4" MIN CLEAR 1 1/2" 1/8" MIN. RADIUS TYPICAL ALL CORNERS TYPE 1 TYPE 2 TYPE 3 TYPE (B) TYPE (C) TYPE (D) NTS ACCESSIBLE PROTRUDING OBJECT 8 NTS STAIR HANDRAIL REQUIRMENTS 11

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