// CODE SNIPPET
809.5.1 Tread Dimension and Area
JUMP TO FULL CODE CHAPTER
Treads shall have a minimum unobstructed horizontal depth of 10 inches (254 mm) and a minimum unobstructed walking surface area of 240 square inches (0.15 m2).
Related Code Sections
411.2.1 Public Swimming Pools, Tread Dimensions and Area
Treads shall be not less than 24 inches (607 mm) at the leading edge. Treads shall have an unobstructed surface area of not less than 240 square ...
Swimming Pool and Spa Code 2015 of Washington > 4 Public Swimming Pools > 411 Special Features > 411.2 Pool Stairs > 411.2.1 Tread Dimensions and Area
411.2.1 Public Swimming Pools, Tread Dimensions and Area
Treads shall be not less than 24 inches (607 mm) at the leading edge. Treads shall have an unobstructed surface area of not less than 240 square ...
Swimming Pool and Spa Code 2018 of Washington > 4 Public Swimming Pools > 411 Special Features > 411.2 Pool Stairs > 411.2.1 Tread Dimensions and Area
809.5.1 Permanent Inground Residential Swimming Pools, Tread Dimension and Area
Treads shall have a minimum unobstructed horizontal depth of 10 inches (254 mm) and a minimum unobstructed surface area of 240 square inches (0.15 m ...
Swimming Pool and Spa Code 2015 of Washington > 8 Permanent Inground Residential Swimming Pools > 809 Special Features > 809.5 Pool Stairs > 809.5.1 Tread Dimension and Area
809.5.1 Permanent Inground Residential Swimming Pools, Tread Dimension and Area
Treads shall have a minimum unobstructed horizontal depth of 10 inches (254 mm) and a minimum unobstructed walking surface area of 240 square inches ...
Swimming Pool and Spa Code 2018 of Washington > 8 Permanent Inground Residential Swimming Pools > 809 Special Features > 809.5 Pool Stairs > 809.5.1 Tread Dimension and Area
1011.7.1 Means of Egress, Stairway Walking Surface
shall be placed so that the long dimension is perpendicular to the direction of travel.
In Group F, H and S occupancies, other than areas ...
2015 Washington State Building Code > 10 Means of Egress > 1011 Stairways > 1011.7 Stairway Construction > 1011.7.1 Stairway Walking Surface