Pipe Drained Pitch

Drainage pipe which has typically been installed into a soil-based pitch. The diameter of the pipe will vary, but 60mm diameter is typical. The spacing of the pipes will vary, but 5 metres up to 10 metres is typical. Drainage pipes will usually be connected to wider diameter perimeter pipes, typically being 80 to 100mm in diameter. The 60mm pipes joining onto perimeter drains are termed lateral pipes. Pipe drains are installed at the base of a dug trench, which is typically 600mm deep, and then backfilled with gravel, or similar material, to a depth of 200mm from the surface. A 50mm coarse sandy grit blinding layer is applied, and then topped off with a 150mm firmed depth of sandy soil.