Ramped towards adjoining curbs with a gradient not more than 1:12.
Sloped towards the road with a maximum cross gradient of 1:20.
Height:
The lowest point of the curb should not exceed 25 mm above the road/gutter.
Design Considerations:
Continuous curb to prevent water collection.
Inclined surface on ramp not to exceed 1:12.
1:20 slope towards street gutter.
Variations considered at corners.
Curb Cut-outs
Conditions for Use:
Allowed only when it does not obstruct or lessen the width of a walkway.
Minimum Width:
900 mm.
Gradient:
Not more than 1:12.
Walkways
Surface:
Kept as level as possible.
Provided with slip-resistant material.
Minimum Width:
1200 mm.
Gradient:
No more than 1:20 or 5%.
Maximum cross gradient of 1:100.
Surface Irregularities:
No abrupt pitches in angle or interruptions by cracks that create edges above 6.5 mm.
Gratings:
Maximum opening dimension of 13x13 mm.
Shall not project more than 6.5 mm.
Rest Stops/Turning Spaces:
Minimum dimension of 1500 mm.
Provided in lengthy walkways.
Maximum distance of 12 meters between stops.
Routes:
Straightforward routes with right angle turns should be observed for the blind.
Maintenance:
Regular maintenance of adjacent plantings needed to avoid overgrowth and obstruction.
Headroom:
Walkway headroom shall not be less than 2 meters.
Obstructions:
Passageway for the disabled should not be obstructed by furniture, bollards, etc.
Handrails
Location:
Both sides of ramps and stairs.
Outer edges of dropped curbs at crossings.
Height:
900 mm and 700 mm above steps or ramps.
1 or 1.06 meters if for protection at great heights.
Extension:
300 mm long extension at start and end of ramps and stairs.
Hand Grips:
30 to 50 mm wide.
Clearance:
Minimum clearance of 50 mm from the wall or 40 mm from the ledge if attached to walls or ledges.
Open Spaces
Walkway Edges:
Defined edges using planters with dwarf walls, grass verge, or similar to provide a texture different from the path to aid the blind.
Signage
Location:
Located at points conveniently seen, even by a person on a wheelchair.
Design:
Simple and easy to understand.
Made of contrasting colors and gray values to make detection and reading easy.
Headroom:
Minimum headroom of 2 meters if a sign protrudes into a walkway.
Wall/Door Signage:
Maximum height of 1.60 meters and a minimum height of 1.40 meters.
Raised Elements:
Minimum height of 1 mm for raised letters and symbols in labeling public areas (Braille should also be included).
Crossings
Design:
Perpendicular to the carriageway.
Located at the narrowest part of the road.
Central refuges of at least 1.5 m deep and preferably 2 m where the width of the road to be crossed exceeds 10 m.
Tactile Surfaces:
Tactile blocks in the immediate vicinity of crossings as an aid to the blind.
High enough to be felt but low enough not to cause tripping.
Brushed or grooved concrete have not proved successful as tactile strips.
Light/Audible Signals:
Light controlled crossings and audible signals are best for the disabled.
Audible signals should be distinguishable, indicating the end of crossing time.
Crossing Period:
Minimum of 6 seconds crossing period or crossing distance times 0.9 m/sec crossing speed, whichever is greater.
Parking Areas
Width:
Minimum width of 3.70 m for accessible parking slots.
Location:
As close as possible to building or accessible entrances.
Perpendicular or at an angle to the road or circulation areas.
Walkways:
1.2 m clear width between front ends of parked cars from accessible spaces.
Signage:
Signs or markings for handicapped parking should be provided.
Slope:
Should never be located at sloping areas.
Inside Buildings and Structures
Entrance
Accessibility:
At least 1 entrance to every building should be accessible from arrival and departure points to the interior lobby.
Vestibules:
Level area with at least 1.8 m depth and a 1.5 m width.
Ramps:
Required if the entrance is not at the same level as the site arrival grade.
Ramps
Requirement:
Required for elevation change except when served by a dropped curb, an elevator, or other mechanical device.
Clear Width:
1.2 m.
Maximum Gradient:
1:12.
Maximum Length:
6 meters if the gradient is 1:12.
Landings:
Ramps exceeding 6 meters with a gradient of 1:12 shall be provided with landings no less than 1.5 m.
Level Areas:
Not less than 1.8 m at the top and bottom.
Handrails:
Provided on both sides at 700 mm and 900 mm from the ramp level.
Curbs:
Equipped with curbs on both sides with a minimum height of 100 mm.
Ramps near vehicular areas:
Ramp with a rise greater than 200 mm and leads down towards a vehicular area should have a railing across the full width of its lower end, not less than 1.8 m from the foot of the ramp.
Doors
Clear Width:
800 mm minimum.
Clear Level Space:
Minimum clear level space of 1.5x1.5 m shall be provided before and extending beyond a door.
Exception: Where a door opens onto but not into a corridor, the required clear level space on the corridor side of the door may be a minimum of 1.2 m corridor width.
Outswinging Doors:
Should be provided at storage rooms, closets, and PWD toilet stalls.
Hardware:
Latching or non-latching hardware should not require wrist or fine finger actions.
Doorknobs and other hardware should be located between 0.82 m and 1.06 m above the floor (900 mm is preferred).
Door Pulls:
Vertical pull handles centered at 1.06 m above the floor are preferred to horizontal pull bars for all doors.
Kick Plates:
Doors along major circulation routes should be provided with kick plates at a height of 300 mm to 400 mm.
Thresholds
Height:
Maximum height of 25 mm, preferably ramped for thresholds and sliding door tracks.
Switches
Position:
Manual switches shall be positioned within 1.2 m to 1.3 m above the floor.
Located no further than 200 mm from the latch side of the door.
Corridors
Clear Width:
1.2 meter minimum clear width (shall have no obstruction).
Turnabout Spaces:
Minimum area of 1.5x1.5 m, spaced at a maximum of 12 m for wheelchair passes and turning around.
Provided at or within 3.5 m of every dead-end.
Surface:
Maintained level and provided with a slip-resistant surface.
Washrooms & Toilets
Dimension:
1.7 x 1.8 meters minimum dimension for accessible toilets.
Turning Space:
A turning space of 2.25 sqm with a minimum dimension of 1.5 m for wheelchairs shall be provided outside water closet stalls.
Accessible Water Closets:
Minimum of 1 accessible water closet on each floor level (or on that part of a floor accessible to the PWD) where the total number of water closets per sex is 20.
Minimum of 2 accessible water closets on each floor level (or on that part of a floor accessible to the PWD) where the total number of water closets per sex exceeds 20.
Water Closet Height:
Maximum height of water closet should be 450 mm.
Flush Control Height:
Maximum height of 1.2 m.
Lavatories:
Maximum height of lavatories should be 800 mm with a knee recess of 600−700 mm vertical clearance and a 500 mm depth.
Urinals:
Urinals should have an elongated lip, the maximum height of the lip should be 480 mm.
Signage:
Men's washroom: Equilateral triangle with a vertex pointing upward (length of sides should be 300 mm).
Women's washroom: Circle (diameter should be 300 mm).
Stairs
Treads:
Slip-resistant material.
Edges of steps should be colored to be easily seen.
Nosing:
Slanted nosing is preferred over protruding nosing.
Open stringer should be avoided.
Tactile Strip:
A 300 mm wide tactile strip shall be provided before hazardous areas such as a sudden change in elevation and at the top and bottom of stairs.
Elevators
Location:
Accessible elevators should be located not more than 30 meters from the entrance.
Dimension:
Shall have a minimum dimension of 1.1 x 1.4 meters.
Button Height:
Centerline height of topmost buttons shall be between 0.9−1.2 m from the floor.
Button Size:
Minimum diameter of 20 mm with maximum depression depth of 1 mm.
Safety
Fencing For Road & Foot Works
Height:
Height of the rail should be at least 1 m above the adjacent surface.
Tapping Rails:
Should not be greater than 350 mm above the adjacent surface.
Strength and Gaps:
Fence should be strong enough to resist people walking into it, and gaps between adjoining fences should not occur.
Signages
Walkway Width:
Place sign on carriageway if it will diminish walkway width to less than 1.20 m.
Location Preference:
Signs should be located on verges or similar where these are available.
Braille:
Legend in Braille, textured symbols on plan (embossed).