Trench mesh is long, narrow sheets of concrete reinforcing mesh, ideally sizes for trenches, paths or other narrow spaces.
Trench mesh common uses include rock walls, brick walls and house footings and used specifically for residential footing trenches.
Trench mesh (schematic diagram as the TM-2) made from grade D500L ribbed reinforcing wire including main wire and cross wire. Its longitudinal wires (main wire) from 7.6 mm up to 15.6 mm diameter, and cross wire in 4 mm or 4.77 mm diameter.
The trench rib mesh products all come 6.0 m longs with a variety of standard widths from 200 mm to 500 mm. Its specification table as below:
|Items||Length (m)||Width (m)||No. of Main Wires||Main Wires (mm)||Cross Wires (mm)||weight (kg/sheet)|
|RTM276||6.0||0.2||3||7.6 @ 100||4 @ 300||7|
|RTM376||6.0||0.3||4||7.6 @ 100||4 @ 300||9|
|RTM476||6.0||0.4||5||7.6 @ 100||4 @ 300||12|
|RTM576||6.0||0.5||6||7.6 @ 100||4 @ 300||14|
|RTM210||6.0||0.2||3||10.65 @ 100||4.77 @ 300||13|
|RTM310||6.0||0.3||4||10.65 @ 100||4.77 @ 300||18|
|RTM410||6.0||0.4||5||10.65 @ 100||4.77 @ 300||22|
|RTM510||6.0||0.5||6||10.65 @ 100||4.77 @ 300||27|
|RTM211||6.0||0.2||3||11.9 @ 100||4.77 @ 300||16|
|RTM311||6.0||0.3||4||11.9 @ 100||4.77 @ 300||22|
|RTM411||6.0||0.4||5||11.9 @ 100||4.77 @ 300||27|
|RTM511||6.0||0.5||6||11.9 @ 100||4.77 @ 300||33|
|RTM215||6.0||0.2||3||15.9 @ 100||4.77 @ 300||31|
|RTM315||6.0||0.3||4||15.9 @ 100||4.77 @ 300||41|
Overlap reinforcement trench mesh
When the slab area is larger than the reinforcement trench mesh, you will need several trench meshes to cover the area. Then trench mesh must be lapped. Where trench meshes are joined end to end, they need to be overlapped by at least 500 mm. The overlaps should be held together with tie wire. Where they overlap at T or L intersections the overlap should be the width of the trench mesh. Shown as below picture TM-3: