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411.2.3 Top Tread
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The vertical distance from the pool coping, deck, or step surface to the uppermost tread shall be not greater than 12 inches (305 mm).
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411.2.3 Public Swimming Pools, Top Tread
The vertical distance from the pool coping, deck, or step surface to the uppermost tread shall be not greater than 12 inches (305 mm) ...
Swimming Pool and Spa Code 2015 of Washington > 4 Public Swimming Pools > 411 Special Features > 411.2 Pool Stairs > 411.2.3 Top Tread
411.2.3 Public Swimming Pools, Top Tread
The vertical distance from the pool coping, deck, or step surface to the uppermost tread shall be not greater than 12 inches (305 mm) ...
Swimming Pool and Spa Code 2018 of Washington > 4 Public Swimming Pools > 411 Special Features > 411.2 Pool Stairs > 411.2.3 Top Tread
702.4.6 Onground Storable Residential Swimming Pools, Top Tread
The vertical distance from the pool coping, deck, or step surface to the uppermost tread shall be not less than 7 inches (178 mm) and not greater ...
Swimming Pool and Spa Code 2015 of Washington > 7 Onground Storable Residential Swimming Pools > 702 Ladders and Stairs > 702.4 Type D In-Pool Ladders > 702.4.6 Top Tread
702.4.6 Onground Storable Residential Swimming Pools, Top Tread
The vertical distance from the pool coping, deck, or step surface to the uppermost tread shall be not less than 7 inches (178 mm) and not greater ...
Swimming Pool and Spa Code 2018 of Washington > 7 Onground Storable Residential Swimming Pools > 702 Ladders and Stairs > 702.4 Type D In-Pool Ladders > 702.4.6 Top Tread
610.6.1 Aquatic Recreation Facilities, Surface Area
An unobstructed surface equal to or greater than that required for the top tread of the pool stairs shall be provided in accordance with Sections ...
Swimming Pool and Spa Code 2015 of Washington > 6 Aquatic Recreation Facilities > 610 Special Features > 610.6 Swimouts > 610.6.1 Surface Area