Installation specifications of manhole covers

2015-5-7 19:24:46

As the saying goes, no rules are not a radius, manhole cover installation is the same, the same two manhole covers, because the installation specifications are not the same, after a period of time, a non-standard installation of the manhole cover will appear subsidence, displacement and other phenomena, and the installation of the manhole cover is no problem.

Therefore, the specification of manhole cover installation is very important, and the following is a summary for you:

1. Wellhead, reinforced well ring and well frame are consistent.

Second, before installing the manhole cover, it should be carefully checked whether the type, size and structure of the manhole cover meet the design standards, and check whether there is damage, cracks and other phenomena.

3. Well frame, well cover and accessories are firmly installed, stable and in correct position. Integrity shall be guaranteed.

Fourth, the use of commercial concrete pouring; When the curing time of concrete is insufficient, the early-strength and quick-setting concrete should be used. The concrete is vibrationally compact and closely integrated with the road structure.

5. The surface layer and base material at the location of the wellhead shall not disturb the surrounding pavement structure.

6. Before pouring the well ring, cushion the well frame according to the measured elevation; The internal wellhead mold adopts a stereotyped template.

7. No less than 6 embedded bolts; If embedded bolts cannot be installed, the well frame should be reinforced by other means, such as expansion bolts or steel mesh.