The main contents of the concealed project are water supply and drainage engineering, wire and pipeline engineering, as well as the base layer of the floor and the base of the partition wall. These projects are especially important in kitchen decoration. Drainage concealed works: PP-R pipe installation layout should be reasonable, horizontal and vertical, and pay attention to the pipeline should not be close to the power supply, the shortest distance from the power supply is 0.2 cm, the connection between the pipeline and the sanitary equipment must be tight, no water seepage through the water test Leakage is acceptable. Whether the floor drainage is smooth: the bathroom and the kitchen are the main places for drainage, so the ground leveling should have a certain slope (2%) to ensure that the water collects into the natural water flow on the ground and eventually flows to the floor drain. However, it should be noted that the slope cannot be emphasized too much for the smooth flow of water, because the slope is too oblique, which will affect the appearance and slip resistance. Waterproof layer is good waterproof: kitchen and back wall are higher in waterproof requirements than other rooms, waterproof paint should be brushed to 1.8 meters high, and other rooms should be 0.3 meters high. PVC pipe connection is tight: the power cable must be PVC pipe when it is buried in the wall, ceiling, floor or floor. There should be no kinking in the pipe. For the bend of the wire protection pipe, the matching pipe bending tool or matching elbow should be used, and there should be no wrinkles. Protection of PVC pipe: After the ground circuit is laid, the wooden side should be placed on both sides of the laid PVC pipe, or the cement mortar should be used as the slope protection to prevent the PVC pipe from being stepped on during the construction of the worker. The spacing between strong and weak electricity should be around 50 cm to reduce the electromagnetic interference between them and prevent the occurrence of safety accidents. Ground base: Mainly depends on whether the ground cement leveling layer is qualified: firstly, the ground of the original house should be flattened with cement mortar, and the kitchen and toilet should have slope, and the slope is also very particular. Solar Green House,Solar Greenhouse Construction,Small Solar Greenhouse,Passive Solar Greenhouse Jilin Yidao Technology Co., Ltd , https://www.yidaotechnology.com