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]]).   
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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| erosion control blanket]]).   
*Mats should be applied with soil fill technique:
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Mats should be applied with soil fill technique:
**Grade the swale and smooth the top soil, removing any debris and large rocks,
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#Grade the swale and smooth the top soil, removing any debris and large rocks,
**Seed with turf grass mixture,
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#Seed with [[turf]] grass mixture,
**Dig 150 mm anchor trench at the top of the channel,  
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#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,
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#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,  
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#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,  
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#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,  
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#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,
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#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 blankets|ECB]]  may be applied to protect the surface through the first one or two years,  
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#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.  
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#Irrigate until turf grass is established.
 
 
 
[[category: materials]]
 
[[category: materials]]

Latest revision as of 15:13, 19 October 2018

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 swaleA shallow constructed channel, often grass-lined, which is used as an alternative to curb and channel, or as a pretreatment to other measures. Swales are generally characterized by a broad top width to depth ratio and gentle grades. 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.