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home > pervious surfaces > pervious surfaces types > construction options
Dependent upon the surface material and use of the surface, the underlying construction usually consists of a combination of :
It may also include, if necessary, drainage networks to discharge water entering
or flowing through the construction.
The outflow from the pervious pavement construction can be achieved in a number
of ways:
Often pervious areas are required only to handle rainfall landing directly upon their surfaces, but their capacity is such that they may also be used to provide a drainage path for water discharged from adjacent areas, such as roofs or impermeable areas of car park. It is advisable to release any additional waters either onto the surface of the pervious construction, or via a debris trap, in order to prevent clogging of the sub-surface layers.