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SASR Norms & Standards Vol 2 new.indd - Sport and Recreation ...

SASR Norms & Standards Vol 2 new.indd - Sport and Recreation ...

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51<br />

Hockey<br />

• The sub-surface drainage system is to be connected to a storm water system to ensure<br />

proper drainage.<br />

• A 250 micron damp proof layer is to be installed below a 125 mm thick (20 Mega Pascal<br />

design strength) concrete surface bed fi nished smooth to ensure proper adhesion.<br />

• Sealers <strong>and</strong> curing agents should not be used since these may affect the adhesion of the<br />

artifi cial grass surface.<br />

• All concrete surfaces need to be dry <strong>and</strong> dust free prior to the placement of the track<br />

surface.<br />

• A 25 mm thick cement levelling screed needs to be placed to true <strong>and</strong> smooth levels.<br />

• Any level defects are to be fi lled in to ensure a smooth <strong>and</strong> even fi nish. Any projections will<br />

damage the artifi cial grass carpet when subjected to use.<br />

Typical Section through Artifi cial grass<br />

Fibres are coated with silicone Curly fi bres keep the straight ones upright<br />

Layer of rubber granules<br />

Modern artifi cial grass<br />

Exp<strong>and</strong>ed polypropylene base

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