1. Water supply and drainage works. Because the galvanized pipe is easy to rust, foul, and not insulated, and will crack and crack, it will be phased out. At present, the most used plastic aluminum composite pipe, plastic steel pipe, PPR pipe. These pipes have good plasticity and toughness, and the insulation is not cracked or fouled. Special copper joints or thermoplastic joints are used for quality assurance and low energy consumption.
2. Electrical pipeline engineering. The general power line is divided into hard wire, soft wire, sheath wire, etc. According to the thickness of the copper core, it is divided into 1 square millimeter wire, 1.5 square millimeter wire, 2.5 square millimeter wire... For safety reasons, it is more convenient for maintenance, power cord Sleeve should be sleeved. In addition, audio lines, signal lines, and the like are commonly used. The socket is divided into 10A, 15A, ..., there are many brands, and there are many fakes. Inferior sockets are prone to accidents, and it is recommended to buy them at regular electrical appliance stores. Electrical line engineering requires construction specifications, and workers should be certified to ensure safety and eliminate hidden dangers.
3. Floor base. There are two ways to make a solid wood floor base: one is to brush the cold base oil on the concrete floor, the wooden keel is laid, and finally the floor is nailed; the other method is to lay a layer of blockboard on the keel, or the floor, then nail In this way, the floor is evenly stressed and the structure is firm. The composite floor is easy to install, and there are two ways to make the base layer: one is to make the leveling layer first, then the PVC cushion layer is laid, and then the composite floor is laid; the other is to lay the wooden keel and the wool floor on the cement leveling layer, and the two paving composite floor.
4. The base layer of the siding. The siding has a flat and concave shape. The method is to first apply a layer of cold base oil on the wall, and then install a 30mm*40mm wooden keel, on which the multi-layer board or blockboard is nailed, and finally the nailed veneer. To prevent mold, a series of 6mm diameter courage holes are placed in the siding.
5, the door and window sets of the base layer. First arrange the keel, then nail the blockboard or MDF, and use the veneer to nail the surface. Note that MDF is expected to be soaked in water to avoid future expansion.
6, the ceiling base. Suspended ceiling materials include gypsum board, gray board, plywood, aluminum alloy gusset, plastic gusset, milled glass, stained glass, etc., keel keel and light steel keel. Cracking of the ceiling often occurs, as is the case with elastic putty caulking and nylon straps.
When the concealed project is completed, it is necessary to pass the acceptance test before the veneer construction can be carried out. If the concealed project does not improve, it will leave hidden dangers, affect quality, delay the construction period, and cause huge economic losses. Therefore, acceptance is particularly important.
The acceptance method of the concealed project can be started from the following aspects: take a look, take a look, try it, and shake it. See if the dragon skeleton is even and even, whether the material is solid; see if there is any dead angle in the wire conduit; see if the water supply pipe interface leaks, and whether the drainage pipe is unblocked; see if the wall tile paste is clean and see the gray bottom. Whether the wire is firmly connected and pulled freely. Try to check whether the waterproof project is qualified or not. Dangling the door, whether the window panel is fixed firmly, whether the floor base layer emits a "beep" sound, and so on.
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