Concealed engineering acceptance

Concealed engineering acceptance refers to pipeline engineering and structural engineering hidden inside the decorative surface. Pipeline engineering includes electrical circuits, water supply and drainage, gas pipes, air conditioning systems, etc. Structural engineering refers to the internal structure used to fix and support the load of the house.

Concealed project acceptance details: 1. The bathroom does not seepage: check whether the bathroom floor is leaking, you can fill it with sand on the floor drain, and then store some water in the bathroom. After 24 hours, go to the corresponding lower bathroom and look at the top Whether there is leakage. This test is best performed at the same time as the upper-floor households, so that you can detect whether the floor of your own bathroom is leaking, or whether the top of your own bathroom is leaking. Check whether there is water on the floor of the bathroom. First, store some water in the bathroom and then release the water to see if there is water on the floor. There should be no standing water on the qualified floor, because the floor drain is the lowest part of the toilet. However, the rough house is excluded, because a certain height of the later pavement ground is reserved around the floor drain. 2. Check whether the doors and windows are flexible and sound insulation:  Try to see if the doors and windows are open flexibly, visually check whether the sides of the door and the door frame, the window and the window frame are parallel, close the doors and windows to listen to the sound insulation effect, and also understand their sealing degree. However, the bathroom door is not required to be tightly closed. In order to be waterproof, it is required that the bottom should be 1.5 cm from the ground. The paint quality of doors and windows mainly depends on whether there is sag (the trace of paint dripping). The top side of each door must be painted, and the bottom side of the bathroom door must be painted. 3. Tap on each wall to hear whether there is a cracking sound: whether there is a cracking phenomenon in the plastering of the wall, the decorative surface of the ground and other decorative surfaces, just tap it with a small hammer. If you hear the sound of “empty”, it means that there are gaps between each surface and the wall (ground) surface and need to be reworked; if you hear a dull knocking sound, it indicates that they are in good contact. 4. Residents on the top floor check the rain seepage situation:  If you buy the top floor, you must check the top surface of each house for signs of rainwater leakage. Because in accordance with the construction requirements, the houses handed over have either undergone two heavy rain “tests”, or the construction party has conducted a rain test under the supervision of the supervision unit. 5. Whether the balcony is cracked: Generally speaking, most of the wall cracks are not structural cracks, which affect the appearance, but are not dangerous. The structural problems of the house often appear on the balcony. If there is a crack in the connection between the room and the balcony, it is likely to be a precursor to the balcony break. You must notify the relevant unit immediately. 6. Check for leaks and water pipes: Open the faucet to check for leaks and water pipes for seepage, leakage or blockage. It should be noted that the water flow should be as large and urgent as possible. First, check the water pressure, and second, try the drainage speed. 7. Heating pipeline inspection: The heating branch pipe has a slope. The heating supply and return water branch pipes are not placed horizontally. The end of the water supply branch pipe connected to the water inlet pipe is higher than the end connected to the radiator, and the height of the two ends of the return water branch pipe is opposite. The slope is proportional to the length of the two branch pipes, and the difference is generally 1% per meter. Heating pipes should be sleeved. Heating pipes should pass through the wall and through the floor. Pipes should be provided (at the junction of the pipe and the wall or floor, put a small pipe on the pipe), and the floor should be 2-3 cm higher than the ground. , The ground is newly decorated, it should be 5 cm above the ground. Its function is to prevent the wall and floor from arching and cracking after the heating pipe expands and contracts. 8. Try to open the switch to cut off the power:   If the switch and the meter are outdoors, check whether it can control the indoor lamps and the indoor sockets. The method is to see if the indoor power is completely cut off after the switch is opened; It should also be separately checked whether each opening is fully controlled by each branch circuit.

Concealed project acceptance specifications: 1. After the concealed project has passed the self-inspection, notify the supervisor and the person in charge of the project in written form and indicate the time and content of the acceptance. 2. The acceptance of concealed projects must be jointly checked and accepted by project managers, supervisors, construction unit constructors, and construction teams. If necessary, the next procedure construction team must participate. 3. The foundation, foundation trough, and pile foundation projects should be attended by the relevant responsible personnel of the survey unit, design unit and the relevant inspection unit. 4. After the acceptance of the concealed project is qualified, the construction unit can proceed to the next procedure after the supervisor and the project manager sign the acceptance record of the concealed project. 5. If the concealed project fails to pass the acceptance, it must be re-inspected after rectification, and the concealed project acceptance record can be signed only after it is qualified, and the construction of the next procedure is allowed. 6. The masonry drawing steel reinforcement project shall be checked and accepted by the daily inspection by the supervisor or the person in charge. 7. If the concealed project fails to pass the acceptance check, it must be rectified within a time limit. If it is not rectified in time, the construction unit will be warned or punished in accordance with the “Relevant Reward and Penalty Rules.

Concealed project acceptance method: 1. The ceiling becomes “dropped” due to the overall or partial collapse of the ceiling. This is mainly caused by the poor combination of the suspended ceiling and the floor, the keel and the decorative panel, or the excessive load-bearing. According to regulations, the ceiling keel must not be distorted or deformed. The installed keel should be firm and reliable. The surrounding horizontal deviation should not exceed 5 mm. Chandeliers or ceiling fans weighing more than 3 kilograms cannot be hung on the ceiling keel, but a hook should be provided. If the ceiling is made of gypsum board, its thickness should be about 9 mm. 2. The balcony encapsulation is not firmly fixed and causes collapse. In the current house design, there is no “footprint” reserved for packaging materials on the balcony, which makes it difficult to package the balcony. When encapsulating the balcony, the doors and windows must be horizontal and vertical, consistent in height, without deformation, welding, or fracture in appearance, and the gap between the frame and the wall should be full and dense. 3. The ceiling is damaged by pipeline leakage. In addition to the water pipes in the kitchen and bathroom, the heating pipes in each room are actually more prone to problems in the family room. Since pipeline installation is not easy to inspect, all pipelines must be inspected by water injection and pressure after the completion of the construction, and there is no running, dripping, dripping or leaking to pass. More about decoration knowledge. 4. Dangerous situation of hidden buried line. Since many houses currently use buried lines, it is not easy for the head of the household to inspect the construction quality. According to regulations, concealed lines cannot be directly buried in the plaster layer, but should be sleeved outside the wires. The wires in the casing must not be twisted or connected. In addition, during line installation, you must strictly abide by the “live wire enters the switch, the neutral wire enters the lamp holder, the left and the right are fired, and the ground is on the top”. After the construction is completed, in addition to the power-on inspection, the construction team will also provide the head of the household with a detailed circuit configuration diagram. 5. The substrate is not clean before painting, causing the paint to peel and fall off. Before painting the wall, be sure to remove the original wall skin, not to leave oil stains. The putty applied on the wall should be combined with the wall densely, firmly, without peeling, chalking and cracking.

Concealed engineering acceptance criteria: 1. Circuit quality acceptance criteria: 1. The strong and weak current pipes are routed separately, there are no joints or kinks in the pipes, and the joints are in the junction box. If you need to branch, you must use a junction box. The wire connection is sturdy, the connection is not subject to tension, the wrapping is tight, and the core is not exposed. 2. Waterway quality acceptance criteria: 1. The pipeline should be installed horizontally and vertically, close to the wall, walking on the top surface, laying firmly, without shaking, and adding 1 fixed card or 1 boom every 800 mm.