The space between two adjacent stair treads not closed by a riser....
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OPEN RISER
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1017.8.4 Turning Space
This section requires a turning space complying with 304.2.3 of the Architectural Barriers Act Accessibility Guidelines where resting intervals are provided adjacent to the trail tread....
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11B-705.1.2.4 Bus stops
warnings are provided at bus stop boarding and alighting areas, the detectable warnings shall extend the full width of the boarding/alighting area and shall be 36 inches (914 mm) minimum in depth...
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1003.2.12.1 Height
Guards shall form a protective barrier not less than 42 inches (1067 mm) high, measured vertically above the leading edge of the tread, adjacent walking surface or adjacent seatboard....
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1003.2.12.1 Height
Guards shall form a protective barrier not less than 42 inches (1067 mm) high, measured vertically above the leading edge of the tread, adjacent walking surface or adjacent seatboard....
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Transfer Platform: ADA Standard Section 1009.5.1
Transfer platforms shall provide 19 inches (485 mm) minimum clear depth and 24 inches (610 mm) minimum clear width....
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11B-1009.5.1 Transfer platform
Transfer platforms shall provide 19 inches (483 mm) minimum clear depth and 24 inches (610 mm) minimum clear width....
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§ 38.153(a)
(a) Floor surfaces on aisles, step treads and areas where wheelchair and mobility aid users are to be accommodated shall be slip-resistant....
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§ 38.117(a)
(a) Floor surfaces on aisles, step treads and areas where wheelchair and mobility aid users are to be accommodated shall be slip-resistant....
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11B-504.4.1 Contrasting stripe
Interior stairs shall have the upper approach and lower tread marked by a stripe providing clear visual contrast....
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§ 38.79(a)
(a) Floor surfaces on aisles, step treads, places for standees, and areas where wheelchair and mobility aid users are to be accommodated shall be slip-resistant....
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§ 38.99(a)
(a) Floor surfaces on aisles, step treads, places for standees, and areas where wheelchair and mobility aid users are to be accommodated shall be slip-resistant...
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1012.2 Height
Guards shall form a protective barrier not less than 42 inches (1067 mm) high, measured vertically above the leading edge of the tread, adjacent walking surface or adjacent seatboard....
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Passing Spaces [1017.4]
A trail tread width less than 60 inches does not permit two people using mobility devices to pass each other....
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Clearance Reduction: ADA Standard Section 306.3.4
Section 306.3.4 covers the current ADA Standards for knee clearance width reduction.
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Station 5-Lateral Operating Space (Sweep Width)
Both the tread and max values of sweep width were recorded. The tread is the width of the contact(s) with the ground. For example, the tread of a bicycle is the width of its tires....
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Conclusions
Conclusions Design criteria based on the univariate analysis of abdomen depth is sufficient if all other clearance dimensions are unbounded (i.e., unrestricted) and abdomen depth is the...
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§ 38.157(a)
(a) Any stepwell or doorway immediately adjacent to the driver shall have, when the door is open, at least 2 foot-candles of illumination measured on the step tread....
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Technical Requirements for Accessible Hiker/Pedestrian Trails
Section 7.4 of FSTAG explains the accessibility requirements for trails, including trail surfacing, clear tread width, grade and cross slope, resting intervals, passing spaces, tread obstacles...
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§ 38.31(a)
(a) Any stepwell or doorway immediately adjacent to the driver shall have, when the door is open, at least 2 foot-candles of illumination measured on the step tread or lift platform....
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T502.4 Doorways with Steps on Over-the-Road Buses
The door opening clear width above a height of 48 inches (1220 mm) measured from the lowest step tread shall be permitted to taper so as to reduce in width to 18 inches (457 mm) minimum....
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Homemods.org
In some cases, modifying the home may also require repairs such as improved wiring to eliminate the need for dangerous extension cords or fixing loose stair treads....
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Stairs
Requirement: 4.9.4(2) If handrails are not continuous, they shall extend at least 12 in (305 mm) beyond the top riser and at least 12 in (305 mm) plus the width of one tread beyond the...
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§ 38.101(a)
(a) Any stepwell or doorway with a lift, ramp or bridge plate shall have, when the door is open, at least 2 footcandles of illumination measured on the step tread, ramp, bridge plate, or...