Difference between revisions of "Turf reinforcement"

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

Revision as of 15:41, 28 July 2017

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). Mats should be applied with soil fill technique:

  1. Grade the swale and smooth the top soil, removing any debris and large rocks,
  2. Seed with turf grass mixture,
  3. Dig 150 mm anchor trench at the top of the channel,
  4. Secure blanket into the trench with staples every 300 mm. Backfill and compact soil into the trench,
  5. Unroll mat in the direction of flow. Staple as recommended by manufacturer,
  6. Overlaps should be 150 mm and stapled. Upstream mat should always overlay the downstream mat,
  7. Anchor the bottom end of the channel in a similar fashion to the top,
  8. 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,
  9. An erosion control blanket may be applied to protect the surface through the first one or two years,
  10. Irrigate until turf grass is established.