6? Hanging? Top？ Work? Cheng? 6. 1? General rules? 6. 1. 1? This chapter is applicable to the quality acceptance of sub-projects such as concealed keel ceiling and open keel ceiling. ? Description:? 6. 1. 1? This chapter is applicable to the suspended ceiling project with keel and decorative board. According to the different construction technology, it can be divided into dark keel ceiling and open keel ceiling. ? 6. 1.2? The following documents and records shall be checked during the acceptance of the suspended ceiling project: 1? Ceiling engineering construction drawing, design description and other design documents. ? 2? Product certificate, performance test report, entry acceptance record and material reinspection report. ? 3? Acceptance record of concealed works. ? 4? Building records. ? 6. 1.3? The formaldehyde content of wood-based panels should be reinspected in the suspended ceiling project. ? 6. 1.4? The suspended ceiling project shall accept the following concealed works: 1? Installation of pipes and equipment in suspended ceiling and pressure test of water pipes. ? 2? Fire prevention and anticorrosion treatment of wooden keel. ? 3? Embedded parts or Rachel reinforcement. ? 4? Boom installation. ? 5? Keel installation. ? 6? Setting of filling materials. ? Description:? 6. 1.4? In order to ensure the safe use of the suspended ceiling project and ensure that the decorative surface is not damaged during the final acceptance, the concealed engineering acceptance of the suspended ceiling project is very important, and the concealed engineering acceptance records signed by the supervision engineer shall be provided for the items listed in this article. ? 6. 1.5? The inspection lot of each sub-project shall be divided according to the following regulations: every 50 rooms (a room and corridor with a large area of 30m2) of the same variety of suspended ceiling project shall be an inspection lot, and less than 50 rooms shall also be an inspection lot. ? 6. 1.6? The number of inspections shall meet the following requirements: each inspection lot shall be at least 65438 00% and not less than 3; If there are less than 3 rooms, all rooms should be checked. ? 6. 1.7? Before installing the keel, handover inspection shall be carried out on the clear height of the room, the elevation of the hole and the elevation of the pipes, equipment and their supports in the ceiling according to the design requirements. ? 6. 1.8? The wooden suspenders, wooden keels and wooden decorative boards of the suspended ceiling project must be treated with fire prevention, and comply with the provisions of relevant design fire protection codes. ? Description:? 6. 1.8? Because the flame and hot air spread upward rapidly in the event of a fire, fire prevention is very important for the suspended ceiling project, so be careful when using wooden materials to decorate the suspended ceiling. The Code for Fire Protection Design of Interior Decoration of Buildings (GB 50222- 1995) stipulates that the combustion performance of ceiling decoration materials must reach Grade A or Grade B 1, but the combustion performance of wood materials without fire protection treatment cannot meet this requirement. ? 6. 1.9? The embedded parts, steel suspenders and steel suspenders in the suspended ceiling project should be rusted. ? 6. 1. 10? Before installing decorative panels, the debugging and acceptance of pipes and equipment in the ceiling should be completed. ? 6. 1. 1 1? The distance between the boom and the end of the main keel should not be greater than 300mm, when it is greater than 300? Well, we should increase the boom. When the boom length is greater than 1.5? M, brackets should be set up. When the boom meets the equipment, the boom should be adjusted and added. ? 6. 1. 12? It is forbidden to install heavy-duty lamps, electric fans and other heavy equipment on the keel of suspended ceiling project. ? Description:? 6. 1. 12? The setting of keel is mainly to fix the facing material, and some lighting equipment such as small lamps, smoke detectors, nozzles and tuyere grates can also be fixed on the facing material. However, if the electric fan and large chandelier are fixed on the keel, it may cause an accident of falling off and hurting people. In order to ensure the safe use of suspended ceiling engineering, this article is specially formulated as a mandatory provision. ? ________________________________________? 6.2? Hidden keel ceiling project? 6.2. 1? This section is applicable to the quality acceptance of concealed keel ceiling project with light steel keel, aluminum alloy keel and wooden keel as the skeleton and gypsum board, metal plate, mineral wool board, wood plate, plastic plate or grille as the decorative materials. ? ________________________________________? Master control project? 6.2.2? The ceiling elevation, size, bulging and shape should meet the design requirements. ? Inspection method: observation; Check the ruler. ? 6.2.3? The materials, varieties, specifications, patterns and colors of facing materials shall meet the design requirements. ? Inspection method: observation; Check the product certificate, performance test report, entry acceptance record and reinspection report. ? 6.2.4? The installation of suspenders, keels and decorative materials of concealed keel ceiling project must be firm. ? Inspection method: observation; Manual inspection; Check the acceptance records and construction records of concealed works. ? 6.2.5? The materials, specifications, installation spacing and connection mode of suspenders and keels shall meet the design requirements. Metal suspenders and keel should be treated with surface corrosion protection; Wooden suspenders and dragon bones should be treated with anti-corrosion and fire prevention. ? Inspection method: observation; Ruler inspection; Check the product certificate, performance test report, entry acceptance record and concealed engineering acceptance record. ? 6.2.6? The joints of gypsum board shall be treated with anti-cracking treatment according to the construction technology standards. When installing double-layer gypsum board, the joints between the surface board and the base board should be staggered, and there should be no joints on the same keel. ? Inspection method: observation. ? ________________________________________? General project? 6.2.7? The surface of facing material shall be clean and the color shall be consistent, and there shall be no warping, cracks and defects. Layers should be straight and even in width. ? Inspection method: observation; Check the ruler. ? 6.2.8? The positions of lamps, smoke detectors, nozzles, tuyere grates and other equipment on the decorative panel should be reasonable and beautiful, and the handover with the decorative panel should be consistent and tight. ? Inspection method: observation. ? 6.2.9? The seam between the metal suspender and the long flat should be uniform, the fillet weld should be consistent, and the surface should be smooth, without warping and hammering. Wooden suspenders and longping shall be straight without splitting and deformation. ? Inspection method: Check the acceptance records and construction records of concealed works. ? 6.2. 10? The variety and laying thickness of sound-absorbing materials filled in the ceiling should meet the design requirements, and anti-scattering measures should be taken. ? Inspection method: Check the acceptance records and construction records of concealed works. ? 6.2. 1 1? The allowable deviation and inspection method of concealed ceiling installation shall comply with the provisions in Table 6.2. 1 1. ? Table 6.2. 1 1? Allowable deviation (mm) for installation of concealed keel ceiling project? Project number? Project? Allowable deviation (mm)? Inspection method? Gypsum board? Metal plate? Mineral wool board? Wood, plastic, grille? 1? Surface flatness? 3? 2? 2? 3? Check with 2m guide rule and feeler gauge? 2? Seam flatness? 3? 1.5? 3? 3? Pull 5? M line, less than 5? M stay, check with a steel ruler? 3? What's the difference in seam height? 1? 1? 1.5? 1? Check with steel ruler and feeler gauge? ________________________________________? 6.3? Ming keel ceiling project? 6.3. 1? This section is applicable to the quality acceptance of the Ming keel ceiling project with light steel keel, aluminum alloy keel and wooden keel as the skeleton and gypsum board, metal plate, mineral wool board, plastic plate, glass plate or grille as the decorative materials. ? ________________________________________? Master control project? 6.3.2? The ceiling elevation, size, bulging and shape should meet the design requirements. ? Inspection method: observation; Check the ruler. ? 6.3.3? The materials, varieties, specifications, patterns and colors of facing materials shall meet the design requirements. When the facing material is glass plate, safety glass should be used or reliable safety measures should be taken. ? Inspection method: observation; Check the product certificate, performance test report and entry acceptance record. ? 6.3.4? The installation of decorative materials should be firm and tight. The lap width of facing material and keel should be greater than 2/3 of the width of stress surface of keel. ? Inspection method: observation; Manual inspection; Check the ruler. ? 6.3.5? The materials, specifications, installation spacing and connection mode of suspenders and keels shall meet the design requirements. Metal suspenders and keel should be treated with surface corrosion protection; The wooden keel should be treated with anticorrosion and fire prevention. ? Inspection method: observation; Ruler inspection; Check the product certificate, entry acceptance record and concealed engineering acceptance record. ? 6.3.6? Derrick and keel of Ming keel ceiling project must be installed firmly. ? Inspection method: manual inspection; Check the acceptance records and construction records of concealed works. ? ________________________________________? General project? 6.3.7? The surface of facing material shall be clean and the color shall be consistent, and there shall be no warping, cracks and defects. The decorative plate and the open keel should be connected smoothly, and the layering should be straight and uniform in width. ? Inspection method: observation; Check the ruler. ? 6.3.8? The positions of lamps, smoke detectors, nozzles, tuyere grates and other equipment on the decorative panel should be reasonable and beautiful, and the handover with the decorative panel should be consistent and tight. ? Inspection method: observation. ? 6.3.9? Metal keel joints should be smooth, consistent, consistent color, can not have scratches, scratches and other surface defects. Wooden keel should be straight, without splitting. ? Inspection method: observation. ? 6.3. 10? The variety and laying thickness of sound-absorbing materials filled in the ceiling should meet the design requirements, and anti-scattering measures should be taken. ? Inspection method: Check the acceptance records and construction records of concealed works. ? 6.3. 1 1? The allowable deviation and inspection method for the installation of open keel ceiling project shall comply with the provisions in Table 6.3. 1 1. ? Table 6.3. 1 1? What are the allowable deviations and inspection methods for the installation of open keel ceiling project? Project number? Project? Allowable deviation (mm)? Inspection method? Gypsum board? Metal plate? Mineral wool board? Plastic, glass? 1? Surface flatness? 3? 2? 3? 3? Check with 2m guide rule and feeler gauge? 2? Seam flatness? 3? 2? 3? 3? Pull 5? M line, less than 5? M stay, check with a steel ruler? 3? What's the difference in seam height? 1? 1? 2? 1? Check with steel ruler and feeler gauge? ________________________________________? 7? Lightweight partition wall project? 7. 1? General rules? 7. 1. 1? This chapter is applicable to the quality acceptance of sectional works such as plate partition, skeleton partition, movable partition and glass partition. ? Description:? 7. 1. 1? The light partition mentioned in this chapter refers to the non-load-bearing light interior partition. There are many kinds of materials used in lightweight partition wall engineering, and there are also many construction methods of partition wall. This chapter classifies them into four types: plate partition, skeleton partition, movable partition and glass partition. Aerated concrete blocks, hollow blocks and various small blocks are not included in the scope of this chapter. ? 7. 1.2? The following documents and records shall be checked during the acceptance of the light partition wall project: 1? Design documents such as construction drawing and design description of light partition wall project. ? 2? Product certificate, performance test report, entry acceptance record and material reinspection report. ? 3? Acceptance record of concealed works. ? 4? Building records. ? 7. 1.3? The formaldehyde content of wood-based panels should be reinspected in the light partition project. ? Description:? 7. 1.3? The construction of light partition wall needs to recheck the formaldehyde content of the wood-based panels used in the site. The purpose is to avoid polluting the indoor air environment. ? 7. 1.4? The light partition wall project shall accept the following concealed works: 1? Installation of equipment pipeline and pressure test of water pipe in skeleton partition wall. ? 2? Fire prevention and anticorrosion treatment of wooden keel. ? 3? Embedded parts or Rachel reinforcement. ? 4? Keel installation. ? 5? Setting of filling materials. ? Description:? 7. 1.4? The construction quality of concealed works in light partition wall engineering is an important part of the quality of this sub-project. This article specifies the contents of concealed engineering acceptance of light partition wall project, in which the concealed engineering acceptance of equipment and pipeline installation belongs to the equipment professional construction cooperation project. Acceptance of concealed works for equipment and pipeline installation in the skeleton shall be carried out before the skeleton partition wall is closed, and the panel can be closed only after the concealed works are qualified. ? 7. 1.5? The inspection lot of each subdivisional work shall be divided according to the following regulations: every 50 light partition wall projects of the same variety (a large area room and corridor is 30m2 according to the light partition wall) shall be regarded as an inspection lot, and less than 50 rooms shall also be regarded as an inspection lot. ? 7. 1.6? Anti-cracking measures should be taken at the junction of light partition wall, ceiling and other walls. ? Description:? 7. 1.6? Cracks are easy to appear at the junction of light partition wall and ceiling or other material walls, so anti-cracking measures should be taken in these parts of light partition wall. ? 7. 1.7? The sound insulation performance of lightweight partition wall engineering in civil buildings shall conform to the current national standard Code for Sound Insulation Design of Civil Buildings (GBJ 1 18).