the year any well used sports pitch becomes compact.
It is shown that this compaction can seal the surface
of the pitch and make it difficult for any water to
penetrate and get through to the drainage system. This
often leaves the playing surface water logged and can
draining is a method of relieving the surface by introducing
a series of spikes which penetrate the surface 250-300mm.
method is repeated on average every year in the autumn
or spring when the ground is soft.