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Hygrade Products Ltd.
102 Neilson St
2013 Onehunga, Auckland / New Zealand
0800 494 723
james.logan@hygrade.net.nz

surface drainage

Surface drainage refers to the drainage from ground and building surfaces. When designing the optimal channel run for surface drainage, it is first necessary to determine the catchment area and the probability of precipitation.

 
 
 

Hygrade Products Ltd.
102 Neilson St
2013 Onehunga, Auckland / New Zealand
0800 494 723
james.logan@hygrade.net.nz

 

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