Drainage pipe pre-burying device with telescopic, waterproof and drainage functions and mounting method
A technology of pre-embedded devices and drainage pipes, applied in the direction of pipes, pipes/pipe joints/fittings, mechanical equipment, etc., to reduce the risk of leakage
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[0039] 1. After the wooden formwork of the concrete floor slab of the toilet on each floor is installed, the center point of the drainage riser is released on the formwork surface according to the plane positioning diagram of the drainage pipe, and the center point is used as the center of the circle, and the diameter of the external device is released. The outer edge line is connected and fixed with the floor formwork with iron nails through the small holes on the earrings at the bottom of the outer device, so that the plane of the outer device can be accurately positioned;
[0040] 2. Use sealing glue or other materials to seal the upper opening of the external device before pouring the floor concrete to prevent concrete from entering the interior of the external device when pouring the floor concrete;
[0041] 3. After the construction of the main structure is completed, from the bottom to the top, check whether there is any position deviation in the pre-embedding of the ext...
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