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3202.1.5 Sidewalk Supports
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Exterior foundation walls are permitted to be constructed with a ledge that projects beyond the street line not more than 4 inches (102 mm) to support sidewalk construction, provided that:
- the top of the ledge is not more than 8 inches (203 mm) below the ground or sidewalk level; and
- bottom of the ledge is not more than 24 inches (610 mm) below the ground or sidewalk level.