Changes

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]]).   

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 grass 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,

#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 blankets| 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|turf grass]] is established.

#Irrigate until turf grass is established.

[[category: materials]]

[[category: materials]]