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Council adopts opinion: stair landing slope provision does not apply to ramp landings; references A117.1 guidance
Summary
The Building Code Council adopted an official opinion that IRC stair-landing slope provisions do not apply to ramp landings and advised jurisdictions to consult ICC/ANSI A117.1 guidance; the council flagged the issue as a code gap for future amendment.
The Washington State Building Code Council on Oct. 17 adopted an opinion clarifying that the residential-code provision governing stairway landing slope (IRC 311.7.7) applies to stair landings only and does not set the maximum cross slope for ramp landings.
Staff prepared the opinion after a request from Spokane Valley and others who reported that, in some retrofit cases, a ramp terminates at a sloped driveway or sidewalk and the absence of explicit ramp-landing guidance has produced inconsistent local approaches.…
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