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− | 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 blanket|ECB]]). | + | 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:
| + | Mats should be applied with soil fill technique: |
− | **Grade the swale and smooth the top soil, removing any debris and large rocks,
| + | #Grade the swale and smooth the top soil, removing any debris and large rocks, |
− | **Seed with turf mixture,
| + | #Seed with [[turf]] grass mixture, |
− | **Dig 150 mm anchor trench at the top of the channel,
| + | #Dig 150 mm anchor trench at the top of the channel, |
− | **Secure blanket into the trench with staples every 300 mm. Backfill and compact soil into the trench.
| + | #Secure blanket into the trench with staples every 300 mm. Backfill and compact soil into the trench, |
− | **Unroll mat in the direction of flow. Staple as recommended by manufacturer.
| + | #Unroll mat in the direction of flow. Staple as recommended by manufacturer, |
− | **Overlaps should be 150 mm and stapled. Upstream mat should always overlay the downstream mat.
| + | #Overlaps should be 150 mm and stapled. Upstream mat should always overlay the downstream mat, |
− | **Anchor the bottom end of the channel in a similar fashion to the top,
| + | #Anchor the bottom end of the channel in a similar fashion to the top, |
− | **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.
| + | #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, |
− | **An [[Erosion control blanket]] may be applied to protect the surface through the first one or two years.
| + | #An [[Erosion control blankets| erosion control blanket]] may be applied to protect the surface through the first one or two years, |
− | **Irrigate until turf grass is established.
| + | #Irrigate until turf grass is established. |
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| [[category: materials]] | | [[category: materials]] |