Glossary

SAND DRESSED PITCH
A type of artificial grass pitch (normally of tufted carpet) where the carpet is sand-filled to within 2 – 3 mm of the top of the pile.

SAND FILLED PITCH
A type of artificial grass pitch (normally of tufted carpet) where the carpet is only partially filled with sand. The sand is to help stabilise the carpet and retain some moisture in the system. The infill is not normally necessary for the playing performance of the surface.

SBR GRANULES
Styrene Butadiene Rubber granules form the base layer of the surface and produce the absorbent properties of the system. 2mm – 6mm SBR granules are made from recycled truck tyres.

SELF BINDING GRAVEL
The process of binding gravel together by rolling and hosing down with water.

SHRINKAGE
Where the surface pulls away from the edge or surface it is bonded to.

All Impact absorbing surfaces (IAS) should carry a test certificate confirming that the surface has been tested in accordance with procedures set out in BSEN 1177 and BS7188: +A2 2009

STRINGLINE A type of spirit level used for levelling across longer distances. Tightly pulled string can be used to find level ground between two stakes.

SUB-BASE
The layer on which the base course layer is installed.

SUDS COMPLIANT
A Sustainable Urban Drainage System is any surface in which water is allowed to drain through to natural ground or directed directly into a natural or installed soak-away.