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Turf reinforcement

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<p>Turf reinforcement mats (TRM) may be required in swales which are designed to convey higher velocity events. Most TRM are made of synthetic fibres and intended as a permanent part of the construction (unlike a temporary [[Erosion control blankets| erosion control blanket]]).
Mats should be applied with soil fill technique:
<ol><li>#Grade the swale and smooth the top soil, removing any debris and large rocks,</li><li>#Seed with turf grass mixture,</li><li>#Dig 150 mm anchor trench at the top of the channel,</li> <li>#Secure blanket into the trench with staples every 300 mm. Backfill and compact soil into the trench,</li><li>#Unroll mat in the direction of flow. Staple as recommended by manufacturer,</li><li>#Overlaps should be 150 mm and stapled. Upstream mat should always overlay the downstream mat, </li><li>#Anchor the bottom end of the channel in a similar fashion to the top, </li><li>#Apply 15-20 mm of [[topsoil]] over the TRM, without the use of heavy machinery which can tear the mat and/or compact the soil, </li><li>#An [[Erosion control blankets| erosion control blanket]] may be applied to protect the surface through the first one or two years, </li><li>#Irrigate until turf grass is established. </li></ol>
[[category: materials]]

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