Bunker Drainage

All the bunkers have an internal drainage system which collects the water that enters the bunker and carries it out of the bunker. There are different types of drainage systems but most bunkers consist of 4 inch perforated pipe laid in trenches surrounded by pea gravel.  An important part of the bunker renovation project is making sure the internal drainage is clean and working properly.  The bunker floor and the drainage are all designed to carry water out of the bunker.  The size and shape of the bunker determines how much internal drainage is needed.  Proper drainage only happens when the internal drainage system is free flowing and properly graded "downhill."

4 inch perforated pipe surrounded by pea gravel

drainage trenches without gravel or pipe

using a hose to flush the drain pipe exiting the bunker