Section 504.5 covers the current ADA Standards for stair nosings.
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Nosings: ADA Standard Section 504.5
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NOSING
The leading edge of treads of stairs and of landings at the top of stairway flights....
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11B-504.5 Nosings
Advisory 11B-504.5 Nosings....
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R408.5 Nosings
R408.5 Nosings. The radius of curvature at the leading edge of the tread shall be 13 mm (0.5 inch) maximum....
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NOSING
NOSING. The leading edge of treads of stairs and of landings at the top of stairway flights....
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504.5 Nosings
504.5 Nosings. The radius of curvature at the leading edge of the tread shall be ½ inch (13 mm) maximum....
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504.5 Nosings
Nosings that project beyond risers shall have the underside of the leading edge curved or beveled....
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NOSING
The leading edge of treads of stairs and of landings at the top of stairway flights....
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NOSING
The leading edge of treads of stairs and of landings at the top of stairway flights....
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Figure 504.5 Stair Nosings – Drawing from the U.S. Access Board
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4.9.3 Nosings
The undersides of nosings shall not be abrupt. The radius of curvature at the leading edge of the tread shall be no greater than 1/2 in (13 mm)....
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4.9.3 NOSINGS
The undersides of nosings shall not be abrupt. The radius of curvature at the leading edge of the tread shall be no greater than 1/2 in (13 mm)....
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504.5 Nosings
Nosings that project beyond risers shall have the underside of the leading edge curved or beveled....
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11B-504.5 Nosings
Advisory 11B-504.5 Nosings....
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11B-504.5 Nosings
Advisory 11B-504.5 Nosings....
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American Safety Tread Co., Inc. Stair Nosing Style 950
Surface Design: Cross Hatched Non-Slip cast metal stair nosing with #24 virgin grain Silicon Carbide abrasive granules embedded into the walking surface while the matrix is in a molten...
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American Safety Tread Co., Inc. Stair Nosing Style 850
Surface Design: Cross Hatched Non-Slip cast metal stair nosing with #24 virgin grain Silicon Carbide abrasive granules embedded into the walking surface while the matrix is in a molten...
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11B-504.5 Nosings
Nosings that project beyond risers shall have the underside of the leading edge curved or beveled....
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American Safety Tread Co., Inc. Cast Metal Safety Stair Nosing Style 801
American Safety Tread cast metal stair nosings, structural treads, platforms, thresholds, and elevator sills have been installed in thousands of projects across the United States, Canada...
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American Safety Tread Co., Inc. E- Cast Metal Safety Stair Nosing Style 816
Surface Design: Cross Hatched Non-Slip cast metal stair nosing with #24 virgin grain Silicon Carbide abrasive granules embedded into the walking surface while the matrix is in a molten...
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Treads and Risers [4.9.2], Nosings [4.9.3]
Variation in riser height along a set of stairs can be a tripping hazard....
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Is color contrast required for stair nosings?
Visual contrast on stair nosings or the leading edges of treads is helpful for people with low vision, but it is not required by the Standards except at escalators in rail and fixed guideway...
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Stairways [§504]
Stairways [§504] Requirements for stairways address treads and risers, surfaces, nosings, and handrails....
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Treads and Riser Specifications in the ADA Standards (§504)
Treads and Riser Specifications in the ADA Standards (§504) Nosing Specifications...
