Part 4 – Stormwater Drainage

4.14    Minimum Cover Over Pipes

4.14.1    General

All pipelines shall be specifically designed to support the likely loadings in relation to the minimum cover to be provided. 

Note:  NZS/AS 3725: 2007 provides a useful guide.  The minimum cover for all types of pipes under shall be 600 mm except as otherwise specified in Section 4.14.2 below, or otherwise agreed by the Asset Manager - Strategy and Policy.

4.14.2    Private Property

The minimum cover over Council pipes in private property shall be 500 mm.  Where due to the topography this cover cannot be provided, specific design and approval will be required by Council.

Where the reticulation lines are located in the front yard of lots, the invert level shall be deep enough not to interfere with any future development such as driveway construction.

4.14.3    Private Pipes

The depth of cover of private pipes is dealt with under the Building Act 2004 and overseen by the Council Building Department.