Views: 0 Author: Site Editor Publish Time: 2023-02-17 Origin: Site
Since the hard polyethylene pipe for building drainage has great flexibility and
is easy to bend, if it is not installed carefully, the verticality of the pipe often fails
to meet the requirements of the specification, which affects the appearance.The correct installation method is that the vertical pipe needs to be straightened, and the horizontal branch pipe needs to be corrected for slope ,strictly in accordance with the operating procedures required by the specification.
The correct installation method is that the scale of expansion should be reserved for the installation of expansion joints, which is 5-10cm in summer and 15-20cm in winter. When the floor height is less than or equal to 4m, the sewage standpipe and ventilation standpipe shall be equipped with an expansion joint
for each floor.
When the floor height is higher than 4m, its number should be calculated and determined according to the design expansion and contraction of the pipeline and the allowable expansion and contraction of the expansion joint, and the design expansion and contraction should not be greater than the maximum allowable expansion and contraction of the expansion joint.
An inspection port shall be set every other floor on the standpipe, and shall be set at the lowest floor or the upper floor with sanitary appliances. If it is a two-story building, the inspection port of the standpipe can be set only on the ground floor.
The turning of the inspection port should be convenient for maintenance. The standpipe should be installed, and the inspection door should be installed at the inspection port.
The pipe cannot be hooped too tightly, and there should be a gap between the pipe body and the pipe body. For long pipeline, calculate the total expansion and contraction, select the number of expansion joints and determine the installation position according to the expansion and contraction allowed by each expansion joint.At the same time, in order to solve the problem that the galvanized clamp is easily corroded and pollutes the pipeline, the pipe clamp should use rubber-coated pipe clamp or plastic pipe clamp.
