WebHave a minimum tread depth of 8.5 inches (22 cm); and 1910.25 (f) (4) Have open risers if the tread depth is less than 9.5 inches (24 cm); 1910.25 (f) (5) Have a minimum tread width of 7 inches (18 cm), measured at … Web1. Minimum clear walking path of 26 inches. A 5-foot diameter or larger stair will provide this width. 2. Each tread will have a minimum of 7 1/2-inch tread depth at 12 inches from the narrow edge. 3. All Treads will be identical. 4. The tread rise shall not be more than 9 ½ inches high. 5. Minimum headroom of 6 foot 6 inches shall be provided ...

1910.25 - Stairways. - Occupational Safety and Health Administration

WebException: Alternating tread devices used as an element of a means of egress in buildings from a mezzanine area not more than 250 square feet (23 m 2) in area which serves not … WebException: Alternating tread devices used as an element of a means of egress in buildings from a mezzanine area not more than 250 square feet (23 m 2) in area which serves not more than five occupants shall have a minimum projected tread of 8.5 inches (216 mm) with a minimum tread depth of 10.5 inches (267 mm). compass offices philippines

Stair tread and riser dimensions for access to storage areas?

WebFor projects falling under the IBC, the minimum tread depth is 11 inches. There is no requirement to provide a nosing, but the maximum nosing projection is 1.25 inches. Note … WebWinder treads shall have a minimum tread depth of 11 inches (279 mm) between the vertical planes of the foremost projection of adjacent treads at the intersections with the … WebFor projects falling under the IBC, the minimum tread depth is 11 inches. There is no requirement to provide a nosing, but the maximum nosing projection is 1.25 inches. Note … ebc-a40l software download