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What have we done:
There are eight sprinklers located on the pitch which are housed in bespoke irrigation chambers which had a membrane skirt to allow a watertight welded seal to the surrounding membrane. The working area was restricted within the stadium, so materials were transported in across the laid Permavoid blanket as works progressed using a lightweight, low load bearing, compact tractor.
The Permavoid units provide a void through which surface water can rapidly drain and air can be blown through for soil aeration.