Name: Division B: Part 9: Housing and Small Buildings
Author: Guides Team

9.14.5. Drainage Disposal

9.14.5.	Drainage Disposal
9.14.5.1.	Drainage Disposal Foundation drains shall drain to a sewer, drainage ditch or dry well.
9.14.5.2.	Sump Pits Where a sump pit is provided it shall be not less than 750 mm deep, not less than 0.25 m² in area, and provided with a cover. Covers for sump pits shall be designed to resist removal by children, and to be airtight in accordance with Sentence 9.25.3.3.(7). Where gravity drainage is not practical, an automatic sump pump shall be provided to discharge the water from the sump pit described in Sentence (1) into a sewer, drainage ditch or dry well.
9.14.5.3.	Dry Wells Dry wells may be used only when located in areas where the natural groundwater level is below the bottom of the dry well. Dry wells shall be not less than 5 m from the building foundation and located so that drainage is away from the building.