Problem 1: Floor seams are too large and cracking
Supervisor explained: According to regulations, wooden floor paving straightness within 5 meters should be less than 1.5 mm, the gap width should be less than 0.5 mm. In floor paving, the most important thing is that the first row should be straight spliced ​​and it must be tight. Otherwise, the more difficult it becomes, the more difficult it will be to make the gap tighter.
Question 2: There is no "S" bend in basin water
Supervisor explained: If the sanitary ware and plumbing installation of the bathroom is not standardized during the renovation process, it will cause inconvenience for future use. In order to reduce costs, merchants often use plastic water pipes. They do not make "S" bends during installation, which can lead to odors in the entire bathroom. It is recommended to use stainless steel pipes with "S" bends.
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Question 3: The cabinet installation is not standardized
Supervisor explanation: When installing the basin in the cabinet, check whether the basin material, brand, and accessories are complete. No special circumstances are allowed and no accessories should be saved. When testing and acceptance of the water, store the water and then unscrew the water outlet. Observe each connection carefully. In this case, some of the accessories are omitted and replaced with other accessories.
Question 4: Outlet Grounding Line
Supervision explanation: According to the national standard GB50327-2001 16.3.9 electrical installation requirements, when installing the power socket facing the direction of the socket, the left side of the neutral line (N), the right side of the phase line (L), the upper grounding line (PE) . The red light in the middle of the three-phase detector in the figure lights up, which means that there is a lack of ground. The lack of ground wires will shorten the life of appliances such as refrigerators and water heaters.
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Question 5: Excessive moisture content of wood keel
Supervision explanation: According to the regulations, the base layer material should be damp-proof before wooden floor pavement. The wood keel used must be dried, and the moisture content is less than 12%. In addition, wood keels should be protected against decay and corrosion. In addition, the spacing of wooden keel nails should be less than 60 cm.
Question 6: Luminaire installation without expansion screws
Supervision explanation: According to the regulations, when the weight of the luminaire exceeds 3 kg, the embedded parts shall be installed on the top plate first, and then the luminaire shall be fixed on the rear embedded parts. In the picture, this phenomenon is that the luminaire is directly fixed on the suspended ceiling. An angle or steel bar should be led from the original roof first, and then the luminaire should be connected with it.
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