How to install the ductile iron manhole cover

The botou tianlong casting installation of nodular cast iron manhole should be noted

1. In order to enhance the strength of the hole compression, increase the area of the bottom surface of the well, and when installing the well, the diameter of the well should not be larger than the inner diameter of the well.

2. The structure of the well structure must be the masonry structure. It must be strong and balanced to form the structure force, so that the well circle and the seats can be installed.

3. When installing a pedestal, the base of the stand cannot be suspended. You can refer to the method of well mounting.

4, well placed and Bi, should be in circle and Bi concrete at the bottom of the well (concrete thickness shall be not less than 30 mm) not when frozen in place, and compaction force or struck vibration well circle, make well circle together with concrete, in order to increase well circle and Bi with well body contact area.

5. The carrying capacity of the product after installation shall not exceed the carrying capacity of the product regulations.

6. Remove the clutter from the well before it is covered and avoid "point contact" with the well cover.

7. Open with a special tool.

8. When the well cover and the rainwater grates are not installed in place, safety should be placed to prevent the rolling pressure of the vehicle.