Section 504.2 covers the current ADA Standards for the treads and risers on stairways.
Search Results "Riser Height"
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  Treads and Risers: ADA Standard Section 504.2
  
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  Pool Stairs: ADA Standard Section 1009.6.1
  EXCEPTION: Pool step riser heights shall not be required to be 4 inches (100 mm) high minimum and 7 inches (180 mm) high maximum provided that riser heights are uniform.... 
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  11B-1009.6.1 Pool stairs
  Exception: Pool step riser heights shall not be required to be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum provided that riser heights are uniform.... 
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  11B-504.2 Treads and risers
  All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Risers shall be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum.... 
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  4.9.2 Treads and Risers
  On any given flight of stairs, all steps shall have uniform riser heights and uniform tread widths.... 
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  OPEN RISER
  [DSA-AC] The space between two adjacent stair treads not closed by a riser.... 
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  504.2 Treads and Risers
  504.2 Treads and Risers. All steps on a flight of stairs shall have uniform riser heights and uniform tread depths.... 
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  504.2 Treads and Risers
  All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Risers shall be 4 inches (100 mm) high minimum and 7 inches (180 mm) high maximum.... 
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  504.2 Treads and Risers
  All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Risers shall be 4 inches (100 mm) high minimum and 7 inches (180 mm) high maximum.... 
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  RISER
  [DSA-AC] The upright part between two adjacent stair treads, between either an upper or lower landing and an adjacent stair tread, or between two adjacent landings. 
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  Open Risers: ADA Standard Section 504.3
  Section 504.3 covers the current ADA Standards for open risers on stairways. 
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  1009.6.1 Pool Stairs
  EXCEPTION: Pool step riser heights shall not be required to be 4 inches (100 mm) high minimum and 7 inches (180 mm) high maximum provided that riser heights are uniform.... 
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  1009.6.1 Pool Stairs
  EXCEPTION: Pool step riser heights shall not be required to be 4 inches (100 mm) high minimum and 7 inches (180 mm) high maximum provided that riser heights are uniform.... 
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  11B-1009.6.1 Pool stairs
  Exception: Pool step riser heights shall not be required to be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum provided that riser heights are uniform.... 
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  1009.6.1 Pool Stairs
  EXCEPTION: Pool step riser heights shall not be required to be 4 inches (100 mm) high minimum and 7 inches (180 mm) high maximum provided that riser heights are uniform.... 
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  11B-1009.6.1 Pool stairs
  Exception: Pool step riser heights shall not be required to be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum provided that riser heights are uniform.... 
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  11B-1009.6.1 Pool stairs
  Exception: Pool step riser heights shall not be required to be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum provided that riser heights are uniform.... 
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  11B-504.3 Open risers
  Open risers are not permitted. Exceptions: On exterior stairways, an opening of not more than ½ inch (12.7 mm) may be permitted between the base of the riser and the tread.... 
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  4.9.2 TREADS AND RISERS
  On any given flight of stairs, all steps shall have uniform riser heights and uniform tread widths.... 
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  11B-504.2 Treads and risers
  All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Risers shall be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum.... 
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  11B-504.2 Treads and risers
  All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Risers shall be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum.... 
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  11B-504.2 Treads and risers
  All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Risers shall be 4 inches (102 mm) high minimum and 7 inches (178 mm) high maximum.... 
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  Treads and Riser Specifications in the ADA Standards (§504)
  Treads and Riser Specifications in the ADA Standards (§504) Nosing Specifications... 
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  RISER
  RISER. The upright part between two adjacent stairs treads.... 
