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  • a. Foundation drains shall be provided in accordance with the building subcode.
  • b., c. and d. DELETED
  • e. Where foundation drains are below the required point of discharge, one or more automatic sump pumps shall be provided. The pump or pumps shall have adequate capacity to convey all drainage to its point of discharge. The minimum pump capacity shall be 15 gallons per minute at the required discharge head. Sump pits shall be sized to accommodate the pump(s), as recommended by the pump manufacturer, but shall be not less than 15 inches in diameter nor less than 18 inches deep. Sump pits shall be provided with fitted covers. Pits shall be located to avoid foot traffic where their covers do not have sufficient strength to carry such weight. Discharge lines from sump pumps shall be sized according to the design pump capacity and shall be not less than 1-1/4" pipe size. A check valve shall either be incorporated into each sump pump or be installed in the discharge line from each sump pump, except that check valves may be eliminated where the discharge pipe would be subject to freezing. Under such conditions, the sump pit shall be adequately sized to prevent short cycling of the pump.
  • f. Where sump pumps discharge at grade on unpaved surfaces, the discharge pipe shall extend to a splash block or equivalent, which shall be designed to contain the discharge, reduce its velocity, and avoid disturbing adjacent areas. Where necessary, the discharge pipe shall terminate with an elbow to direct the flow along the splash block. Splash blocks shall be at least 24 inches long.
  • g. Water-operated sump pumps shall comply with Section 3.1.13.
See Figures 13.1.5-A and 13.1.5-B
Figure 13.1.5 - A
A FOUNDATION DRAIN OUTSIDE OF A FOOTING
Figure 13.1.5 - B
A SUMP PUMP FOR FOUNDATION DRAINS

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