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Re: City sidewalk to front walkway transition
Left Coast Codes:
UBC 1997 1003.3.3.3 Rise & Run: Exception 2: Where the bottom or top riser adjoins a sloping public way, walk or driveway having an established grade (other than natural earth) and serving as a landing, the bottom or top riser may be reduced along the slope to less than 4 inches in height with the variation in height of the bottom or top riser not to exceed 1 unit vertical in 12 units horizontal (8.3% slope) of the stairway width. (See diagram)
2007 CBC 1009.3.2 is virtually the same wording with the addition of adding a distinctive marking stripe at the nosing or leading edges of treads, which shall be visible in decent of the stair and shall be a slip-resistant surface.
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