about 1.5 m in diameter, depending

about 1.5 m in diameter, depending on the flow of water flows that have the drain diameter varies according to the design. During the construction of sewer manholes, as well as dig holes in weak land need to close the old tram or iron piles, 1m2 about 25 trees CU tram, the aim is to land subsidence prevention, fixed against the avalanche.

with a diameter of about 1.5m, depending on the flow of water that drains diameters vary by design. During the construction process drains, manholes and pits dug in the soft soil, it should piling Melaleuca or iron poles, piles 1m2 25 Melaleuca trees, the aim is to fix the land, against subsidence, erosion control.

Kết quả (Anh) 2:

about 1.5 m in diameter, on the flow of water phụ thuộc có có drain flows diameter varies theo design. During the construction of the sewer manholes, as well as dig holes in weak land need to close the old tram or iron piles, about 25 trees CU 1m2 tram, the aim is to land subsidence prevention, fixed Against the avalanche.

With a diameter of about 1.5m, on the flow of water phụ thuộc có drains diameters vary by design. During the construction process drains, manholes and pits dug in the soft soil, it shouldnt piling Melaleuca or iron poles, piles 1m2 25 Melaleuca trees, the aim is to fix the land, Against subsidence, erosion control.