1mW Water Reticulation Design to SPAN-UTG 006
Water Pipe Routing
It is preferable to lay water pipe within reserve, and this is mandatory for supply main with diameter larger than 900mm.
Water pipe should not be laid under roadway unless for road crossing and serving individual building.
Pipe bedding must be provided based on the depth of cover and surface loading condition. Generally, the cover should be at least 1m, and protection is required if shallower cover is provided.
Horizontal clearance between water pipe and drain or other utilities should be at least 600mm. When encountering sewer pipe, the minimum clearance is 3m.
300mm clearance is required when water pipe crosses above culvert. S-bend should be provided when we have insufficient clearance.
Water pipe should always be laid above sewer pipe with minimum 1m clearance.
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