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OMy Bookmarks ` <br /> vapor retarder X Q <br /> G Dimensions at Stairs: Reference Surfaces Co x <br /> DIMENSION AT STAIRS:REFERENCE SURFACES <br /> Stair riser at landing 1TVI U t/Q Imo) <br /> •• Vertical plane of 4"min,7"max QQQQ <br /> foremost projection <br /> / *All dimensions exclusive of �n Landing <br /> carpets,rugs,or runners <br /> Trea�� <br /> 11"min <br /> min <br /> • • Stair riser C <br /> 4"min,7"max / ✓ /VI <br /> osin <br /> Y10 <br /> N <br /> • <br /> • <br /> Finished Floor n <br /> Q �l <br /> OVERVIEW <br /> The dimensions of stair risers and treads should be measured in a manner that does not include <br /> l carpets, rugs or runners. Carpets, rugs, or runners are not permanent fixtures. They can be <br /> removed, replaced, or wear out over time, which could alter the actual dimensions of the stairs. <br /> Thus, building codes require that stairs meet size and uniformity standards without the inclusion of <br /> Y these additional elements. <br /> PRIMARY SECTIONS <br /> WA BC 1011.5.1 Dimension Reference Surfaces('18) WA BC 1011.5.2 Riser Height and Tread Depth ('18) <br /> RELATED SECTIONS <br /> WA BC 1011 Stairways('18) WA FC 1011.5.1 Dimension Reference Surfaces ('18) WA FC 1011 Stairways ('18) <br /> WA FC 1011.5.2 Riser Height and Tread Depth ('18) <br /> upont load of less than 50 shall have a width of <br /> ' (914 mm). <br /> ' ' ded for in Section 1011.10. is <br />