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24.45.030 Minimum Surfacing Standards for Driveways Serving Structures More than 150 Feet from an Improved Public Right-of-Way.

City code section
  1. Surfaced areas must be constructed on properly drained, well-compacted subgrade, that is free of organic materials. Minimum pavement structure must be:
  2. A. Two inches of asphalt concrete on 4 inches of 1-inch minus, compacted crushed rock; or
  3. B. Five inches of Portland cement concrete having a compressive strength of 3,000 psi after 28 days, or
  4. C. A driveway surfaced as per Section 24.45.020 for the first 40 feet contiguous with the right-of-way paving and the remaining portion of 8 inches of 1-inch minus, compacted crushed gravel over filter fabric, or
  5. D. Grid paving blocks, paving stones or materials with adequate spacing for drainage infiltration, or other stormwater management control surfaces. Where such surfaces are provided in accessible parking and as part of an accessible pedestrian path, the surfaces must meet accessibility standards of the Building Code.

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