“Hidden works” are construction projects that are hidden after decoration and cannot be seen on the surface. According to the decoration process, these “concealed works” will be covered by the latter process, so it is difficult to check whether the materials meet the specifications and whether the construction is standardized.
Concealed project acceptance content
1. Power distribution engineering
Whether the hidden wire has a tube sleeve, whether the telephone line, closed circuit TV line, computer network cable, etc. are unblocked, whether the diameter of the wire meets the standard, whether there is a grounding wire, whether the wire is branched, whether the location of the socket is reasonable, etc.
2. Plumbing engineering
Whether the drainage area is waterproofed, what materials are used for the water pipes, and whether the heating pipelines are connected tightly and leak-proof.
3. Wood production base
Whether the wooden keel is strong, what kind of plate is used for the base layer, what nails are used, whether a nail shooting machine is used, etc.
4. Ceiling base
Whether the internal structure of the ceiling is strong, whether the keel is flat, whether the specifications, models, quality, spacing, etc. of the hanging parts, connectors, and solid parts meet the requirements, what materials are used, and whether the various pipes, lines and equipment in the ceiling have been made Airtight test, electrical insulation, resistance test, whether the connection is firm, etc.
5. Ground base
Whether to chisel the hair first, whether to clean it, what is the thickness of the sand, whether to dry it, etc.
6. Wall base
Whether the putty is flat and smooth.