First, the preparation work before the installation of water and electricity in the hotel
1. The hotel has detailed design drawings for water and electricity installation and construction.
Hotel water and electricity installation needs to grasp the layout and route of water and electricity installation in the whole space, including cooling water, exhaust, drainage, water supply and lighting. These should be fully considered in the design, and the construction should be carried out in strict accordance with the design drawings of hydropower installation in the construction process.
2. Mobilization and arrangement of construction personnel
Before the water and electricity installation of the hotel, it is necessary to arrange the water and electricity installation personnel, determine the construction period, professional construction personnel and management personnel.
3. Determination of building materials and technology
Hotel water and electricity installation materials and construction technology should be standardized, in line with building materials and contracts.
Second, the hotel electrical installation construction technology
1, hotel wire
Wire laying should comply with the design requirements, and can be laid by pipes (metal pipes or plastic pipes) and sheath line. Ordinary insulated wires shall not be exposed.
(1) Wiring of Hotel Electrical Installation Piping
Choose pipes, pipe-to-pipe connections, smooth nozzles and complete mouth protection. Pipes shall be fixed and arranged neatly. Box (box) should be set correctly and reliably. The distance between the electric pipeline and the steam hot water pipe and the pipeline laid on the ceiling should be fixed and reliable, and the distance from the ceiling surface should be greater than 50? Hmm? ;
(2) sheath line wiring
It is forbidden to have kinks, dead bends, insulation damage, sheath damage and other defects. It is forbidden to bury directly in alkaline materials such as plastering layer. Wiring should be straight, tidy and reliable, and there should be protective tubes for crossing beams, walls and floors.
(3) Installation of lighting appliances and switch sockets
The selection of lighting appliances should meet the design requirements, and the contact between appliances with high calorific value and combustible substances should be insulated; Socket, switch installation is firm, seamless around; 1.5m？ The following installed sockets shall be sockets with electric shock prevention measures; Switches installed in kitchens and bathrooms should be waterproof switches; The model and wire diameter of the conductor shall meet the design requirements; Wires are connected and fastened, and joint heads are tightened; Tight binding, no damage to the core wire, no kink, kink, dead bending, insulation damage and other defects.
2. Installation of wall lamp
( 1)? Installation position determination
Generally, the height of the wall lamp is 1440 ~ 1850 mm from the working face, that is, 2240~2650mm from the ground, and the wall lamp in the bedroom can be close to the ground, which is about1400 ~1700 mm; The distance from the wall lamp to the wall is about 95 ~ 400 mm
(2)? method of erection
The installation method of wall lamp is relatively simple. After the position is determined, the lamp holder of the wall lamp is mainly fixed, and the wall lamp is often fixed on the wall by means of embedded parts or punching holes.
(3) Install the chandelier
Large chandeliers are installed on structural floors, such as floors, lower chords and beams of roof trusses, while small chandeliers are usually installed on shelves or reinforced joists.
Building materials: wood, aluminum alloy, mainly used as supporting members, plastic, plexiglass plate and glass as spacers, external decorative veneer, radiator plate, copper plate and anodized aluminum plate as decorative members, and other accessories such as screws, nails, rivets, finished lamps and adhesives.
Construction tools: pliers, screwdriver, hammer, chainsaw, electric hammer, manual, ruler, paint brush, etc.
Operation method of connecting hanging cups and slings with structural layers: mainly consider the connection between embedded parts and transition pieces. Precautions for installation: the position and length of the ceiling, the hanging rod can be directly removed from the ceiling and sleeved, and the hanging rod should have a certain length of thread for height adjustment. Pay attention to the reliability of the connection when hanging the light box under the sling boom.
Step 3 install the ceiling lamp
( 1)? Classification of chandeliers
Ceiling lamps are classified by structure: there are two types: relief and embedded;
Ceiling lamps are divided into spherical, hemispherical, oblate, oblate, square, rectangle, diamond, triangle, cone, olive and vertical flower according to the shape of lampshade;
(2)? Installation method of ceiling lamp
Material preparation: the selection and installation of materials and tools refer to the chandelier.
Operation method:
Opening of ceiling: firstly, connect the small joist with the opening of ceiling lamp to form a hole frame, which not only provides connection points for lamps.
Connection between suspenders and lamps: Small ceiling lamps can only be connected with joists, and large ceiling lamps should be provided with suspenders on the structural floor, which should be installed during floor construction. The embedding method is the same as that of ceiling steel bars.
Building ceiling lamp: Non-disposable finished lamps are often used, but ordinary fluorescent lamps, incandescent lamps, lattice glass, plexiglass and polystyrene plastic crystal sheets are assembled into a large-area ceiling lamp.
(3) Installation precautions
Before construction, it is necessary to know the form, size and connection structure of lamps and lanterns, so as to determine the position of embedded parts and the size of four openings. High-quality ceiling lamps should be hung separately, and no hanging bars should be added after nail shooting.
Familiar with the plan and node details of ceiling lamps, study the layout and node details of lamps and lanterns, and sample lamps and lanterns.
At the joint of ceiling lamp and ceiling board, the edge component of ceiling lamp should press the panel or cover the panel seam.
The glass surface of the assembled ceiling lamp can be rhombic glass or polystyrene crystal, or ordinary glass and plexiglass can be used for grinding, so as to increase refraction and reduce transmittance and avoid dark light.
Three, sanitary ware and pipeline installation construction technology
1, installation of sanitary ware
(1) The model, specification and quality requirements of sanitary ware shall meet the requirements of design or engineering contract (engineering agreement).
(2)? The installation position of sanitary ware shall meet the following requirements:
The center of the drain hole of the squatting pan is not less than 540mm from the wall, and the center of the drain hole of the squatting pan is not less than 420 mm from the longitudinal direction of the wall, and the height of the sitting surface is 300 mm from the ground; The urinal mouth is about 600mm from the ground, and the washbasin mouth is about 800mm from the ground. The models and specifications of the bathtub are quite different, so it should be set reasonably according to the actual spatial position, and the upper edge of the bathtub is not more than 520mm from the ground.
(3) Sanitary wares are embedded in good condition
When sanitary ware is connected to the drainage pipe, the pipe diameter gradient of the drainage branch pipe is as follows: toilet pipe diameter 100mm, minimum slope of 0.0 12, urinal pipe diameter of 40-50mm, washbasin drainage pipe diameter of 32-50mm, and bathtub (shower) drainage pipe diameter of 0.020.
(4)? Support (bracket) should be flat and firm, and have good anti-corrosion protection.
(5)? Sanitary ware installation is firm and stable, without damage; Closely connected with water supply and drainage pipelines and accessories, without leakage.
(6) The drain plug and floor drain should be installed smoothly and firmly, below the drainage surface, without leakage.
2. Installation of pipes and accessories
(1) The models, specifications and quality of water supply and drainage pipelines and accessories shall meet the design requirements.
(2) Pipeline installation should be reasonable in layout, close to the wall as far as possible, horizontal and vertical, with correct slope direction and firm (fixed) laying.
(3) The accessories are correctly installed, flexible and convenient to use, intact and firmly connected.
(4)? Pipes, pipe accessories and accessories shall be installed and connected firmly without leakage.
(5) Brackets (supports and hangers) shall be laid flat and firm. Pipes, accessories and supports (supports and hangers) are well protected against corrosion.
(6) The water supply and drainage system is unblocked and free from blockage. There is no water leakage, and the water meter works normally.
(7) The concealed water supply pipeline must be pressurized for leakage test before it is closed.
(8) Sanitary appliances and all kinds of water supply and drainage pipes should be treated for leakage prevention when passing through the floor.
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