Beijing Concrete Manhole Inspection: What to Check in Concrete Manholes? (Ruiheng Shengmao)
What are the construction details of cement manholes? Let's find out with the editor from Dongsheng Cement Products Factory!
Cement inspection wells yield excellent results, provided their quality is guaranteed. Of course, prior to using cement inspection wells, it is crucial to pay attention to the inspection process. So, what does a cement inspection well need to be inspected for? The specific steps are as follows:
Inspect the sequence of mechanical and equipment connections between the wellhead and the pipeline. First, the mechanical and equipment should be separated from the upstream and downstream sections of the receiving pipe. The machinery and equipment should be used in the order of wellbore to wellbore.
The construction methods for connecting manhole covers to piping and piping connections should be the same as those for similar joint piping connections.
3. The diameter at the connection points of the sewage manhole covers, inlet pipes, and outlet pipes needs to be reduced. When using reducers, if the pipe diameter is smaller than the diameter of the manhole's spigot pipe, flush the top of the pipe; when the pipe base extends beyond the lower pipe, flush the outer bottom of the pipe.
When adjusting the inclination of pipes with variable angle or spherical joints, when the pipe diameter is 3.15 mm, a tool should be used instead of a chain wrench.
5. For equipment with additional fittings, choose the tool based on the drilling standards and the diameter of the connecting pipe to bore holes in the wall. The circumference of the hole should be smooth, and other fittings of the equipment must not be reversed.
6. When local water levels are high or during a drought season, technical measures should be taken to prevent the well from floating up upon completion of pipeline (including manhole) equipment, but before irrigation tests are conducted.
