I. Drainage works

Water supply and drainage works include pipeline accessories and various types of water nozzles, angle valves, installation of water supply fittings, and indoor drainage works.

basic requirements:

1. Before entering the field, you must first test the bullet line to check whether the original water pipe is unblocked;

2. Whether the original incoming power (meter capacity, incoming cable size), telephone line, and broadband information network can be adjusted;

3. Check whether the position and drawings of household appliances, lighting switches and sanitary ware are in accordance with the drawings or omissions. If not, adjust according to the actual situation;

4. Except for the design specification, the hot and cold water pipes are made of steel-plastic pipe, the supervisor is unified as Ф20mm, and the branch pipe is Ф16mm; check whether the pipeline is unblocked before installation;

5. It is not allowed to change the nature and location of waste, sewage and drainage of drainpipes, floor drains and toilet bowls. (Except in special circumstances) The drain pipe must have a water trap to prevent odor emission;

6、All steel pipes are threadedly connected and lined with hemp, thick lacquer or raw material. Acceptance of pipelines should be consistent with pressure>=0.6Mpa; voltage regulator “20 minutes of pipe internal pressure drop<=0.5Mpa as standard; After the temporary seal, to prevent chores;

7, the pipeline installation should be horizontal and vertical, laying firm, PVC pipe must be glued tightly, the slope meets 35/1000 requirements;

8. The pipeline installation shall not be close to the power supply, and under the wire conduit, excessive bridge bending shall be used during crossover. The distance between the water pipeline and the gas pipeline shall not be less than 50mm;

9. The water pipe leading to the balcony must be equipped with a valve, and the joint should be avoided in the middle;

10, hot and cold water pipes exposed head spacing must be determined according to the actual size of the faucet. Two heads (surface mounted head must be extended with galvanized pipe 30mm sleeve to ensure that the triangle valve is installed in parallel) must be on the same level; exposed head protruding plaster should not be less than 10-15mm, and fixed with cement mortar The depth of hot water management into the wall should ensure that there is a protective layer of cement mortar more than 15mm outside the pipe to avoid cracking by hot glaze (except in special cases). Long-distance hot water pipes must be treated with insulation materials.

11, exposed head conventional height (all net size)
Shower 1000mm
Shower room 1000mm
Bathtub 650mm washbasin (undercounter type) 500mm
Kitchen sink 600mm
Washbasin (undercounter type) 600mm Washer height +200mm
Water heater (1200-1600mm) (or on-site decision)

12. When the pre-project is completed, it is necessary to install 1-2 temporary faucets for the construction site (the low faucet is the best period), and provide the required list of materials (specifications, quantities, types) for the customers to arrange their own time for purchase.

13, sanitary ware installation must be solid, not loose, drainage is smooth, no leaks throughout the connection seal; water 2 hours after installation is complete, use their own visual inspection and feel test again;

14, toilet installation must be connected with oil lime or silicon rubber, butter volume seal, is strictly prohibited with cement mortar, water pool, bathtub drain must be connected with a hard pipe;

15. All sanitary ware and fittings should be inspected before installation and after they are installed. Check whether there is any damage. After the installation of the project, all sanitary wares should be checked;

Second, electrical engineering

basic requirements:

Electrical product materials must meet the requirements of product standards and safety standards, and electrical construction personnel should hold certificates.

1. The size of the distribution box set for each household must be determined according to the actual need for opening; each household must be equipped with a total open (two poles) + leakage protection device (the required position is 4 single pieces, the circuit breaker is open. For qualified products), separate air routes and wiring shall be set up in strict accordance with the figure, and use of old roads shall be marked for air-to-air openings. Distribution box installation must have a reliable ground connection;

2, with the landlord to determine the switch, socket brand, verify whether the doorbell, door lamp power supply, proofreading drawings with the scene is not in conformity with the customer's consent should be adjusted to pay the signature;

3, the electrical wiring are used in the policy BV single-strand copper wire, ground wire is BBR soft copper wire, wear PVC buried (hollow floor, except for the in-situ roof panel) to the horizontal and vertical, walk along the flat top corner, no ceiling However, there are 80mm cream Yinjiao line time limit walking 20mm, Ф 15mm each one, prohibiting the ground discharge pipe alignment; strictly according to the map wiring (lighting trunk 2.5mm2, branch line 1.5mm2) no joints and kinks in the pipe, all with new Line, the old line is delivered to the landlord upon acceptance. It is prohibited to directly bury the wire in the ash layer (BVV sheathing wire is used when the mud is contaminated);

4. The total cross-sectional area of ​​the conductors in the pipe must not exceed 40% of the internal diameter of the pipe. Several of the same type of lighting can be threaded into a single tube, but the total number of wires in the tube must not exceed 8;

5. The incoming lines of telephone lines, television lines, and computer lines must not be moved or closed. It is strictly forbidden to install weak wires and wires in the same pipe (including through switches, socket cassettes, and cassettes therefor). The pipelines are straight from the corners of the floor. ;

6. It is forbidden to change the position of the gas pipeline and header at will. The same plane between the conduit and the gas pipe shall not be less than 100mm, different planes shall not be less than 50mm, and the distance between the electrical socket switch and the gas pipe shall not be less than 150mm;

7. The reserved wire length in the cable box is 150mm. The flat top reserved wire must be marked with a label, the wiring is the phase wire into the switch, the neutral wire enters the lamp head, and the zero wire enters the lamp head. When facing the socket, it is the left zero and right phase ground; The switches and sockets must be installed securely and in the correct position, close to the wall. In the same room, the box is on the same level;

The conventional height of switches and sockets (calculated on the old floor) must be set to the same level as the horizontal line.
Type Ordinary Split Air-Conditioning Vertical Air Conditioner Room TV Detachable Soot Machine Head Light Plug Kitchen Plug Special Socket, Switch Socket Height 300mm 2200mm 300mm 700mm 2200mm (Mid-Zoom 1500mm) 600mm 1100mm Adjust the switch height according to the drawing or according to the actual situation 1300mm

9. In the early stage of project construction, each room is equipped with a temporary lighting fixture, a socket, a power distribution box and a protection switch, and all the power supplies are connected, and the wires and pipes are drawn. And provide a list of late materials (specifications, brands, quantities, types), to facilitate the landlord to arrange their own time to buy;

10. Lamps, plumbing, kitchen and bathroom hardware distribution, anti-fog mirrors (ordinary mirrors installed by carpenters) should be inspected after entering the market to see if there is any damage.

11. It is forbidden to carry live work (in special cases, one person must be present during live work). After the installation of the project, all lighting fixtures, electrical appliances, sockets, switches, and meters shall be turned off for power test inspection, and their positions shall be accurately marked on the distribution box and arranged in order.

12. Painted lighting, sockets, weak electricity maps and pipelines shall be printed and mapped with the designer after approval of the concealed project.

13. The squad leader must work on the site, be present at the time of acceptance, and should do a good job of clean-up before the completion of the early and late phases of the project;

14. Before the paint enters the site, it shall conduct a comprehensive re-examination of the strong electricity and weak electricity.

Hydroelectricity process acceptance specification

Project Standards, Requirements Testing Methods Testing Tools

Pipe engineering pipe and pipe fittings or valves shall not be loosened, and the pipes shall be firmly fixed under the pipe, and the distance between the pipe and the gas pipe shall be the same plane>100mm, different planes>=50mm, visual inspection and feel and water pass experiment

1, whether the pipeline arrangement meets the design requirements

2, whether the pipeline installation is fixed, no loose check

3, down the water pipe should be open, the water meter is operating normally

4, the smooth flow of the pipeline, the connection province no leakage, taps, valves open flexible

5, water pipe installation shall not be close to the power supply, water pipe and gas pipe spacing steel tape measure

6, the pipe installation is horizontal and vertical, the slope meets the requirements, and the pipe is fixed in time with a random extraction of three horizontal dimensions

7, the water pipe leading to the balcony must be full inspection

8, pipe test pressure on the 0.6Mpa voltage regulator for 20 minutes, the pressure drop in the pipe is less than 0.05Mpa pressure test pump pressure test

Electrical Engineering

1, all kinds of electrical switch, distribution box installation must confirm the certificate of all inspection electrical test

2, the electrical wiring before the inspection seal slot detection

3, indoor wiring should be wearing passengers before the full inspection slot sealing inspection

4. The power cord, telephone line, television line and computer line must not be installed in the same pipe before the inspection of the tape

5, insulation resistance test

6, installation panel full inspection visual inspection

7, socket height from the ground full inspection visual and feel steel tape measure

8. Spacing of conductors, switch joints and gas pipelines (mm)

9. Prohibit the use of neutral and ground mud, fix the position of the drain ground wire, and select the same color full test instrument as required

10, telephone line, network cable, TV line, speaker check all check multimeter and tester

The first step of the hydropower reform is the positioning of hydropower, which is to determine the location of the switch sockets and the position of the waterway interface according to your needs. The plumber should draw the direction of the water pipes and wires on the wall according to the position of the switch socket water header. The line is also the layout of the circuit, remembering that the decoration team needs water and electricity maps, so that the plumber can follow the map to tell you clearly, don't be afraid of trouble, the plumber will meet your requirements, after the completion of the hydropower reform if you Do not sign, plumbers do not want to take money from the decoration captain.

After hydropower positioning, the next step is to slot. The slots played by a good slotter are basically a straight line, and there are basically no hairs in the slot. Before making a groove, be sure to have a plumber mark all the water and electricity on the wall. Remember to compare the hydropower diagrams and see if they are consistent.

With regard to hydropower reform, there are still several points to note:

1. It is best to specify in the contract the brand of the electric wire used in the circuit modification.

2. The switch of the whole house should be basically in the same horizontal position.

3, the outlet of the whole house should try to be in the same horizontal position, special outlets such as air conditioners, refrigerators and exceptions with special requirements.

4. The color of the phase line and neutral line in the circuit reconstruction should be the same for each house. If possible, it is better to specify the color of the fire line, neutral line, and control line in the contract. The protection line is a yellow-green color according to the national regulations.

5, outlet line (including air-conditioned refrigerator) is best to use three lines more than 4.0 shares, lighting line with two lines more than 2.5 shares on it.

6, the bottom box is buried, if you can, it is best to buy their own bottom box, please decorate the team to report the installation fee.

7, on the audio line, if you are not a professional enthusiast, it is best not to install audio cable: Shenzhen's housing area is basically about 100 square majority, the living room area is generally not great, in such an area installed audio The effect is not really necessary for the average person. Air traffic control is also silver.

On the waterway reform, I think it is necessary to say something about it: Regarding the issue of hot water, in terms of the weather in Shenzhen, it is not necessary to use a washbasin or a kitchen sink to use hot water. If you need hot water, turn on the water heater and pick it up. During the renovation, I only lamented that making money is not easy to spend money but it is so easy!

Finally, it should be noted that it is best to specify in the contract that the woodwork should be entered after the completion of the hydropower reform. The advantage of this is that you do not have to pay attention to two things at the same time. The hydropower reform is a very important expenditure in the decoration and is also a decoration company’s profit. Bulkhead, and the hidden nature of hydropower reform is very big. If woodworkers enter the construction site at the same time, they will distract you and not focus on hydropower reform. When the waterway is reformed, be careful to keep it clean. When waterway reconstruction is contracted, it is better to indicate the materials used for waterway reconstruction. In addition, the size of the water pipe in the original room should be taken into account in the waterway reconstruction. The pipe connecting the original water pipe in the house should be matched with the original water pipe.

In the circuit reconstruction, it should be noted that in advance the lighting of the whole house should be installed in order to determine the position of the switch socket, and at the same time, the price of the new embedding line and the change line should be different. When buying a bell, it is best to buy a wireless doorbell.

Note the following:

1. Usability: Whether the location of the switch panel is convenient to use and the location is reasonable, consider comprehensive.

2. Usability: The proportion of hydropower home improvement projects in the construction price report is generally around 1/5 (base decoration). Therefore, avoiding unwieldy traces can save a lot of expenses.

3 Correctness of positioning: When the hydropower is routed, the distance between the lines should be minimized to reduce unnecessary waste. However, attention should be paid to ensure that the ground line of the wall is kept horizontally and vertically. When bending the pipe, the bend should be minimized when the length of the straight line of the line exceeds 15m. When there are more than three right angle bends, an intermediate junction box should be added. Ensure that maintenance is straightforward.

4. Stability: The circuit wiring should be protected by PVC pipe. There should be sufficient distance between strong and weak electricity to avoid affecting the weak signal. The indoor wiring of TV, telephone and network cable should not be connected in series.

5. Safety: The water supply pipeline should be pressure tested, and the drainage pipeline should be drained to test leakage.

6. At the end, there must be a wiring diagram or a real picture of the water circuit so that reference can be made to prevent it from being destroyed when other appliances are installed later.

* basic requirements

An electrician's license issued by the national administrative department must be held in order to work on the job, and it must be operated and constructed in strict accordance with the relevant national electrical code and "hydropower process code".

Must take the initiative to solicit the views of the owners, patiently listen to the requirements of the owners, determine the power switch. And water level appliances. The location of hot and cold faucets, etc., after satisfactory to the owners, can be started construction, to avoid rework due to insufficient communication.

Circuit. All main and auxiliary materials in the waterway reformation adopt national certified products.

Strength and weakness circuits and waterways shall be maintained at a distance of more than 500mm between each other when they are laid into the wall. The construction shall be covered with bare ends.

After completion of the renovation of water and electricity, construction workers shall draw the hydropower reform as-built drawings according to their actual locations and submit them to the company for archiving.

* Electrical construction specification:

Temporary power supply on the construction site should have a complete plug. switch. socket. Leakage protector settings, temporary use of electricity must be cable.

Power cord is divided into three colors: FireWire red. Zero line blue. Ground line yellow. All one-way outlets should be "left-zero-right-fire-middle" or "lit-down-zero" connections.

Power supply circuit for each room outlet, kitchen. bathroom. The power supply circuit of the bathroom should use the leakage protector independently and must be connected to other power supply circuits. It must not be connected to other circuits by its zero line.

Air-conditioning and other high-power appliances, must set a dedicated power supply circuit, air conditioning using 4M2 power cord, lighting line 1.5 ~ 2.5M2 power cord, all power outlet power supply circuit should use 2.5M2 power cord. Other power supply loads refer to this standard.

All the PVC wires in the wall are covered with 20 smoldering pipes and elbows. Straight section. Wire connection and connection, use no comb in the bottom of the cup and comb, and do not expose the power cord to the ceiling or directly into the wall with cement to ensure that the power cord can be pulled or replaced.

Under special conditions, when the power line pipe is passed under the ground, special attention should be paid to the use of a tight connection under the ground. Under the ground, the connection of the source line to the ground must not be used. Before the floor is not closed, PVC casing must be well protected and no breakage damage is allowed. When laying floor tiles, PVC casing should be completely covered by sand financing. When nailing wooden floors, power lines should be laid along corners to prevent power cables from being nailed. damage.

The power cord goes horizontally and vertically, and cannot be pulled diagonally, and avoids wall mirrors and objects. The installation position of furniture, etc., to prevent being hammered. Nail damage. When the power cord is buried, it should not be considered with electric heating. Shui Ting. Water pipes and weak current lines are maintained at a distance of 500 MM or more.

The power line tube should be fixed in the wall groove in advance, to ensure that the surface of the sleeve is recessed into the wall above 13MM, (the depth of the groove on the wall>33MM)

After inspection and approval, after the power line is connected, it shall be wetted and wetted with 1:2.5 cement mortar. The surface of the seal shall be leveled and shall be 2 mm below the wall surface. The power supply box should be firmly installed, and the bottom of the panel should be flat and fits the wall surface.

The air-conditioning power supply adopts 16A = hole socket, in the children can touch the height (1.5M below) should use the outlet with a protective door, bathroom. wash room. The bathroom shall be equipped with a splash-proof socket, with an installation height of not less than 1.3M, and away from sources of water. For comfort and convenience of living, the bedroom shall be equipped with dual-control switches. The kitchen power outlet shall be provided with switches in parallel to control the power supply and disconnection into the cabinet. The power of the microwave oven should be set on the wall to control the switch.

A variety of strong and weak electrical socket interface rather than lacking, the two sides of the bed should be set with a power outlet and a telephone socket near the computer desk, the living room TV cabinet wall should be set to 3 power outlets, and set the appropriate TV. phone. multimedia. Broadband network and other outlets.

Switch box is generally 1.2 meters from the ground, a room with a multi-use socket.

All plugs. Switch should be higher than 300MM above the ground, in the same room socket. Switch height is the same (height difference <5MM parallel installation is a height difference <1MM, and will not be blocked by sliding doors, furniture and other objects.

The rocker switch is installed in the same direction with the lower end pressed in. The upper end is pressed in. The socket switch is used. When the panel is fastened, use the matching screws. Do not use wood dowels or plasterboard screws to avoid damage to the bottom joint.

Lamps with metal shells, reliable grounding of the metal shell: The fire wire should be connected to the center contact of the screw base; the spotlight has a large amount of heat, and a lamp holder with a yellow wax tube should be used. After the wire is connected, the lamp holder wire should be spread.

sound. TV. phone. multimedia. The method and requirements for laying weak current lines, such as broadband networks, are the same as those for laying the source lines. The sockets or boxes are installed separately from the power sockets (avoiding strong electric lines), but the strong and weak lines are not allowed to be set together. The distance is more than 500mm. The audio cable should be used as a bottom box on the wall, behind the speaker, and no open line is allowed on the wall. When not in use, the speaker can be placed in the bottom case and covered with a panel.

If there is no special request from the customer, the telephone lines in all rooms should be combined into a single number. If there is a distribution box on the floor, the telephone line should be connected to the distribution box. At the joints of the multi-core telephone lines, the casing openings should be tightly packed with tapes to prevent the phone lines from getting wet and crosstalk from occurring.

Weak and weak electrical installation quality inspection methods: Weak electric wires shall be short-circuited and measured at the other end. The power socket shall be tested with 220V light, and the insulation strength shall be measured with a megohmmeter. The insulation strength between the wires shall be greater than 0.5. MQ. The telephone line connector must have a dedicated connector.

* Hydraulic construction specifications

When the waterworks enter the market, they must first make a water storage test on the kitchen and the bathroom. After 2 days, go downstairs to see if there is any leakage. If any leakage occurs, the owner must be notified in time for waterproofing.

The layout of the double water supply pipelines should be reasonable, and should not be inclined or crossed.

The waterway reconstruction adopts aluminum plastic pipe and side fittings. Before installation, it is necessary to check whether the water pipe and connecting fittings are damaged. Sand eyes. Cracks and other phenomena.

Water meter installation position should facilitate readings, water meters. The distance between the valve and the wall should be appropriate and it should be easy to use and maintain.

In the wall. Under the ground, use as few or no connection fittings as possible to reduce potential leaks. The connection parts must be installed firmly. No leakage.

The two outlets for double taps should be on the same horizontal line and with the pot. The pool is symmetrical about the axis, and the central axis of the reserve plane is perpendicular to the wall surface.

The height of the water supply outlet (elbow) on the wall should be appropriate. It is necessary to facilitate maintenance, and to minimize the exposure of the hose as much as possible, without additional hoses, giving a simple, beautiful visual. There is no type of sanitary ware for the pillars that are not under the cabinet. Reserve height is generally about 600 mm on the ground.

The drain of the pedestal basin should be set in the center of the bottom of the column or behind the column, and should be covered with the column as far as possible. The drain pipe of the hanging washbasin (without column and no cabinet) must be provided with a drain pipe (ie, the drain pipe into the wall) in the horizontal arrangement of the elbow drawn from the wall surface.

For cabinets, washbasins, and sinks, the water supply pipes should be bent out of the wall and the back of the cabinet. The height should be about 300mm above the bottom of the cabinet (about 400mm from the ground), and should not be drawn from the cabinet floor. Faucets are generally from the washbasin 30-40CM 1-1.2 meters off the ground.

After the pipe connection is completed, the reserved elbow should be plugged with the blockage wire in the wall groove, and the water valve should be closed for pressure detection. The test pressure is 0.8 MPa and it is qualified for 24 hours without reduction. At this point, the water pipe can be enclosed in the wall.

The water of the ambassador should go directly into the main water pipe, and must be equipped with a sinking pipe head to prevent odors.

The floor drain must be placed at the lowest point on the ground.

cupboard. In the washbasin cabinet, the lower water pipe should be installed at the edge of the cabinet door, at the central part of the cabinet, etc., and the latex sealant should be used to seal the gap between the lower water pipe and the bottom of the cabinet.

After the drainage pipeline is installed, it shall be tested for water testing, and the underwater water shall be ensured to be free from leakage and overflow.

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