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Title: Section 1825  •  Size: 3032

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SECTION 1825 - WATERPROOFING REQUIRED

Where the groundwater investigation required by Section 1820 indicates that a hydrostatic pressure caused by the water table does exist, walls and floors shall be waterproofed in accordance with this appendix chapter.

EXCEPTIONS: 1. When the groundwater table can be lowered and maintained at an elevation not less than 6 inches (152 mm) below the bottom of the lowest floor, dampproofing provisions in accordance with Section 1821 may be used in lieu of waterproofing.

The design of the system to lower the groundwater table shall be based on accepted principles of engineering which shall consider, but not necessarily be limited to, the permeability of the soil, the rate at which water enters the drainage system, the rated capacity of pumps, the head against which pumps are to pump, and the rated capacity of the disposal area of the system.

2. Wood foundation systems constructed in accordance with Chapter 18, Division II, are to be provided with additional moisture-control measures as specified in Section 29.303.

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