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Question:

What is the distance between the waterproof plate and the top of the tunnel?

What is the distance between the waterproof plate and the top of the tunnel? What are the relevant provisions of this specification?

Answer:

Some of the design drawings, the specification seems to be unable to find, which is related to the location of longitudinal flexible drainage pipe
Geotextile, composite geomembrane, bentonite waterproof blanket, a new type of three-dimensional mesh pad, geocell and other engineering materials
The main production and operation of a variety of plastic geogrid, steel plastic composite geogrid, fiberglass geogrid, warp knitted polyester geogrid

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