Water Supply Construction Specifications for Home Decoration
Upon entering the site, water supply workers must first conduct a water retention test on the kitchen and bathroom. After 2 days, go downstairs to check for any leaks. If leakage occurs, notify the owner immediately so that waterproofing treatment can be done in time.
The routing and layout of dual water supply pipes should be reasonable, avoiding diagonal runs and crossings.
For water line renovations, use straight-angle aluminum-plastic pipes and connecting fittings. Before installation, check if the pipes and connecting fittings have any damage, pinholes, cracks, or other issues.
The water meter installation position should allow easy reading. The distance between the water meter, valves, and walls should be appropriate to facilitate usage and maintenance.
Within walls and under floors, minimize or avoid using connecting fittings to reduce potential leak points. The installation of connecting fittings must ensure they are secure, without leaks, and properly aligned at corners.
For dual water supply faucets, the two reserved openings should be on the same horizontal line and symmetrical with the axis of basins or pools. The center axis of the reserved opening plane should be perpendicular to the wall.
The height of the reserved water supply opening (bend) on the wall should be appropriate, facilitating maintenance while minimizing the exposure of flexible pipes. No additional flexible pipes should be added, providing a simple and aesthetically pleasing appearance. For sanitary fixtures without cabinets below, such as column basins, the reserved opening height is generally set around 600mm from the ground.
The drain outlet for column basins should be located at the center bottom of the column or behind it, covered by the column as much as possible. For wall-hung basins (without columns or cabinets), the drainage pipe must be set horizontally with a bend protruding from the wall (i.e., the drainage pipe enters the wall).
For cabinets and basins with sinks, use bends to lead the water supply pipes out from the wall and the back panel of the cabinet. The height should be approximately 300mm above the cabinet base (400mm from the ground), not from the bottom panel of the cabinet. Generally, the faucet should be 1-1.2 meters from the ground and 30-40cm from the basin.
After completing the pipe connections, fix them in the wall grooves first. Use plugs to block the reserved bends, close the water valves, and conduct a pressure test. The test pressure should be 0.8 MPa, maintaining it for 24 hours without dropping to qualify. Only then can the water pipes be enclosed within the wall.
The drainage of the toilet should directly enter the main drainage pipe and must be equipped with a sedimentation pipe head to prevent odors.
The floor drain must be placed at the lowest point of the ground to prevent water collision against the wall corner.
In cabinets and basin cabinets, avoid placing drainage pipes near cabinet doors or central areas. Seal the gaps between the drainage pipes and the cabinet bottom with latex-modified cement.
After installing the drainage pipes, perform a water test to ensure smooth drainage without leaks or overflow.