so-called According to the decoration process, these Hidden project is laid in the decorative surface of the internal works. Hidden home improvement project includes six areas: water supply and drainage, electrical pipeline project, the floor grassroots, grassroots siding, windows and doors Taoban grassroots, grass roots ceiling.
bathroom drains and more
Profile acceptance to the sewer construction standards of quality electrical hazards decoration Raiders Notes About project acceptance is the hidden foundation engineering, electrical lines, water supply, heat supply pipelines need to cover, cover project. Hidden housing construction projects include the following: (1) to the drainage works; (2) Electrical pipeline project; (3) Floor primary; (4) The primary wall; (5) sets of primary windows and doors; (6) grassroots ceiling; (7) strong electric cable; (8) Network Cabling cable (cable, phone line, monitor cable, elevator call line). The hidden works highway projects include the following: (1) foundation and infrastructure, including soil conditions, slot-based geometry, elevation,[url=http://www.beatsbydresale.org/beats-monster-with-fire-c-16.html]Beats Monster with Fire[/url], ground handling; (2) of the main structure of the various parts of steel, including: steel varieties, specifications, quantity, spacing , joint conditions and rust, alternative change the situation; (3) bridges and other structures, tendons, reserved pore diameter, location, slope, joint treatment, channel banding firm of the situation; (4) on-site structural welding, including electrode grade (model), the weld size, weld length, height and appearance of the slag, etc.; (5) Bridge deck waterproofing layer under the leveling layer roughness, slope, Slab location, size; (6) Bridge surface expansion joints embedded parts specifications, quantity and location of embedded;directory
2, the original pre-construction inspections of the pipeline is smooth, then the construction, pipeline construction and then check whether the flow. Water pipes should be concealed by-pass water inspection, newly installed water supply pipes must be in accordance with relevant provisions of the pressor test, should be no leakage, inspection and approval before construction of the next procedure. 3, before the construction of drainage channels should be in the temporary sealing of the original pipe, to avoid the debris into the pipe. 4, tube diameter 25mm the following to the installation of water pipes, pipes in the corner, water meters, taps or angle valve and piping should be located at the end of the 100mm pipe card, control card must be installed securely. Pipe with threaded connections should be connected to the exposed threads, installed cards should be promptly fixed with a tube, pipe and pipe fittings or valves may not have between the loose. 5, the installation location of all valves shall meet the design requirements, ease of use and maintenance. 6, all fittings, valves and pipe connections should be tight, without leakage, pipe slope shall meet the requirements. 7, a variety of channels may not change the original nature of the pipeline. (2) acceptance requirements and methods of a pipeline arrangement should meet the design requirements, the pipeline should be fixed firmly installed, no loose, faucets, valves installed flat, open and flexible, water flow, water meter in normal operation. Method of using visual inspection and touch. 2, pipelines and equipment, pipe and pipe connections shall be no leakage. Through the water using the method, visual way to check for and handle leaks. 3, pipe installation should not be near power, water and gas pipe spacing should be not less than 50mm. Steel tape measure check. Acceptance criteria for analysis of water supply and drainage: to drain installed to meet the design requirements, to ensure the smooth flow of water and drainage. Pipes and appliances, pipes and pipe joints shall be no leakage of water connected at the phenomenon. Drainage channels, we should first check the existing pipe is smooth, smooth confirmation after longer construction. The new inlet and drain must be installed in accordance with relevant provisions of the pressurized water through the test, should be no leakage, pass the inspection before sealing or proceed to the next process of construction. Electrical (1) Basic Requirements 1, each household should be set household distribution box, distribution box should be set leakage circuit breakers, residual operating current should be less than 30mA, with overload, over voltage protection, and scores Road outlet, respectively, control lighting, air conditioning, sockets, etc., the circuit should ensure that the load properly. 2, the wire should be laid decorative design requirements for construction, the line short-circuit protection, overload protection, the choice of conductor cross-section, low voltage electrical installation shall be the country's existing standards and the relevant provisions in Shanghai. 3, except through the hollow interior floor layout should be worn outside the pipe laying, and the use of insulated single strand copper wire. Wear a pipe laying, pipe the total cross-sectional area of conductor pipe diameter should not exceed 40% of cross-sectional area, pipe fittings and kink may not have. Wires and telephone lines, cable TV lines, communication lines, and shall not be installed on the same pipeline. 4, the lighting and heating load of wire cross-section should be chosen to lead the safe carrying capacity within the shunt is not greater than the rated current of all electrical appliances and various sub-route capacity must not exceed the capacity into the family line. 5, the ground protection should be reliable, inter-wire and wire-to-ground insulation resistance between the value should be greater than 0.5MΩ. 6, into the family of PVC plastic conduit of wall thickness shall be not less than 1.2mm. 7, heater installation may not use common outlet, shall not be installed directly on the combustible components. Splash-type socket should use the bathroom. 8, the outlet from the ground shall be not less than 200mm. Wire line inside the box should be left margin, length appropriate for the 150mm. Wiring into the switch phase, the zero line directly into the head, screw cap phase should not be connected to housing, lighting height from the ground should open Yang is 1.3mm, door switch should not be installed. 9, hanging flat in the electrical piping, piping requirements should be specified, piping shall not be fixed in the hanger or flat keel. Head box, junction box set should be easy to repair, and seal plates. Use hose to lights, and its length should not exceed 1m. Application-specific connectors at both ends of the hose and junction box, lamp securely connected. Grounded metal hose should be done to protect itself. A variety of strong, weak wire shall occur within the hanging flat bare. (2) acceptance requirements and methods 1, after completion of the project owner shall provide alignments, location dimensions, one by one according to the above requirements for acceptance, the electrical lines to be hidden after acceptance of the owners should be allowed to carry out covert operations. 2, the phase line for the power outlet and the zero line position for the right odds to zero, a grounded outlet hole, the ground should be top of the jack position, grounding should be reliable. Switches and sockets should be installed securely. Using visual inspection and manual methods, and use special tools to test the circuit test socket on the phase line, neutral and ground location is to meet the requirements. 3, wires and gas lines of the separation distance requirements in Table 1, and the steel tape measure to check. 4, the construction is completed, should be carried out electrical power and lighting pilot lights test, verify switches, sockets, performance is good. Electrical acceptance criteria analysis: cable installation to ensure safety. Should be set per household with people box, be sure to install the ground wire, power distribution box should be set leakage circuit breakers, residual operating current should be less than 30MA, with overload, over voltage protection, and scores Road outlet, respectively, control lighting, air conditioning, sockets, etc., the circuit should ensure that the load properly. Into account the thickness of PVC plastic conduit shall be not less than 1.2 mm, wire and telephone lines, cable TV lines, communication lines shall not be installed on the same pipeline. Tube conductors should not exceed the total cross-sectional area of pipe cross-sectional area of 40% of the diameter, the pipe shall have joints and kinks. Outlet from the ground should not be less than 200 mm. Wire line inside the box should be left margin, length 150 mm should be. Phase into the switch, the zero line directly into the lamp. Outlet for the phase and neutral line position for the right odds to zero, there are holes in the ground receptacle, the ground should be top of the jack position. Electrical wiring should be concealed only after acceptance covert operations. Construction specifications do home decoration, Each of these projects can not be ignored, if a part of a problem which, may result in serious economic losses, and even harm to personal safety. A kind of Today's conventional construction are inside the water pipe buried in the wall. Water installation is divided into two water installation and drainage installation in the class, the task is to ensure water supply system water quality, water quantity and water pressure. Principles of water supply piping to ensure the water supply safe, convenient layout of the premise to shorten the pipeline, but also to facilitate the construction, maintenance and aesthetics. Now some of the formal fitting to the water used by the company to achieve most of the standard composite or brass tube, HSBC, because these materials of good quality, so the cost should be more expensive, but more than those composite pipe or galvanized pipe security, much more practical. Cloth in the final after a good water supply, must use test presses 2-3 hours after decompression, to a sealed tube. Drain is used to exclude people's daily life sewage. Drainage installation shall be the shortest distance to the outlet pass, then the gradient if the pipe length should be large, drainage materials must meet international standards, better materials on the market today have Boser cards, plastic cards together, pass cards, such as PVC Huaneng tube. 2 What kind of With the increase in household appliances, people demand more and more electricity, so the electrical wiring projects must go through an electrical engineer only after careful circuit design construction, so that the owners life easy and safe. Power line installation of quality materials and construction technology are demanding. Wiring materials generally wire, PVC pipe and wire line side switch and other components and electrical accessories. Since each material has a lot of variety, quality mixed, so the prices vary greatly. On the wire, the commonly used wire sizes 1.5mm2, 2.5mm2, 4mm2, 6mm2, 10mm2, etc., but there are many varieties of each kind of specification, such as BVT (double plastic protection), BV (single plastic protection), 2R-BW (flame retardant double plastic), 2R-BV (single flame retardant plastic), and levels are different, there are international standards, national standards, and some non-compliance, the price difference between 1-2 times, or even 3-4 times, I hope consumers do not take any cheap, to bring their own problems (Note: It is now on the market some good material, electrical wiring Qingfeng, the Yangtze River boards, PVC pipe line with Boser, Union, China can pass card, etc.; electrical Switch Panasonic, Matsumoto, etc.). Ray tube layout requirements: lighting lines and outlet lines to separate control wire to 2.5mm2 BVV, kitchen, electricity, air conditioning, electricity and jacuzzi, etc., must use lines, wires of 4mm2 BVV. In the construction of the upper and lower wiring lines must be vertical, so straight, some sets of wires and fittings PVC pipe line,[url=http://www.beatsbydresale.org/beats-monster-with-fire-c-16.html]Beats Monster with Fire[/url], could not have destroyed the wall or load-bearing walls, etc., the line must be set against the wax pipe insulation. 3 What kind of Now the company is generally regular decoration waterproofing materials used in Luban card or cards tar polyurethane waterproof coating Huili rubber. The construction method is: first repair the wall or the ground level, clean, clean team, to be the dry, pour the water in the coating of a compound quantity stirring 3-5 minutes, and then paste tiles and floor tiles. Owners please note that some of the construction team to cut corners now, instead of using bitumen waterproof material, the majority of owners do not understand the mystery, the asphalt as long as 38 yuan / barrel (8.5kg Pack), each kg4.47 yuan per kg can be coated 2 square area, that area every elegant way to spend 2 yuan more than just money, materials, water simply can not achieve good results. The waterproof coating is quite different, compared to Luban water, each 330 yuan (16kg / group), each kg20.63 yuan, according to the instructions of the method used, the amount of 2.5kg per square meter or so, namely: 51.58 yuan / square meters, from absolute performance to achieve waterproof effect, but more than bituminous material cost per square meter more than 49.34 yuan. Thus, the general formal decoration company with waterproof paint, the purpose is to ensure project quality, on the one hand is the responsibility of the owners, the other is to maintain the consumer's own credibility. Because, in almost all formal decoration company has signed a one year warranty renovation contract commitment. If you do not have excellent water-proof construction materials, the consequences of renovation by the company responsible. The Therefore, the fitting room to remind consumers of the company's choice of decoration must be cautious; and careful identification of asphalt and other waterproof coating. Hydropower engineering and construction standards test methods (1) 1 wire construction methods, electrical product is in line with the standards of qualified products. 2, electrical wire used flame retardant underground pipe laying, cable in the pipe should not have knots and kinks. 3, the prohibition of direct buried cable plaster layer. 4, the 5, air conditioning and electrical power should be a separate set tube (flame tube processing). 6, power lines, TV cable, phone line not into the same tunnel. 7, switches, sockets installed firmly in the correct position, the cover upright, close to the wall, surrounded by seamless. After the installation of electrical engineering, electrical power should be, try bright lights, switch control. After completion of the project, shall provide wiring drawings, specifications and to indicate the wire. (2) the installation of a pipeline, pipeline arrangement is reasonable, laying a solid, smooth vertical and horizontal, switches, valves installed flat, flexible and convenient. 2, water pipes and accessories connected tight, water pressure test without leakage, the water smooth, water meter in normal operation. 3, the discharge pipe should be smooth, non-blocking, no leaks, turn on the water bath should be higher than the bottom, forming the floor drain grates should be slightly lower than the ground. 4, installation of sanitary ware firm, smooth surface without damage. (3) selection of water supply pipe fitting more hidden in the wall, if the pipeline once the rupture or leakage, repair abdominal wall must be open, go to war. To control the pipeline leakage, the ultimate solution is to select Start from the pipe. 1, brass copper water pipes in developed countries has been widely used in Europe, the United States 100 years has been used so far in the water supply system still dominant. Copper pipe is considered a Supply materials made of copper, can be regarded as green materials. 2, stainless steel tube stainless steel tube is developed Western countries, application of a water supply pipe. Stainless steel performance and stability, not rust, no secondary pollution, to ensure water hygiene. However, stainless steel pipe material was hard and tough, according to the traditional craft, construction, tapping, threading is very difficult, to installation and construction of a larger increase in trouble, and expensive. Currently there is a stainless steel can market around the hoses, stainless steel tube has solved the difficult problem of installation. This product is a special heat treatment, can be based on environmental needs of the construction, for any angle of bend designed around the strong, quick and easy installation. As the general price of more expensive stainless steel tube, there are still an economical thin-walled stainless steel tube, instead of thick-walled stainless steel tube with a thin-walled stainless steel tube, save raw materials. Thick-walled steel prices 40% to 50% cheaper. 3, the plastic pipe with plastic pipe as light weight, corrosion resistance, water resistance, easy to install quickly and engineering advantages of low cost, has been widely used at home and abroad. However, plastic pipes do not pressure, not heat, no fire, burning will produce toxic gases in a high fever, high pressure, under conditions close to the fire difficult to use. Its intensity, linear and extreme temperature conditions, the region, have restricted its scope. Currently plastic pipe technology constantly updated, there were many with high-tech products. Such as cross-linked polyethylene pipe and the material deformation decreased, impact strength, low resistance, high temperature, higher than conventional polyethylene plastic pipe has been a major technological breakthrough. There are also UPVC plastic pipes, the new pipe material has a higher cost, and ease of processing, has a good flame resistance, chemical resistance and easy installation, low cost integrated features, the thermal expansion coefficient larger than the steel pipe , soft connection to more effectively address the problem of thermal expansion and contraction. 4, the composite pipe is composite pipe ordinary galvanized steel pipe for the outer, lined with polyethylene tube, the compound formed. Steel pipe with a steel strength, stiffness and corrosion resistance of plastic pipe, clean, smooth wall, water resistance is small. Steel tube with a superior cost performance, and to work with the largest amount of ordinary domestic direct replacement galvanized pipe, is the most likely to be one of the people to accept the pipeline. Plastic composite pipe is to replace the State Construction Committee to promote a new pipe of galvanized pipe. This new compound is a polyethylene pipe (or cross-linked polyethylene) - hot melt adhesive - Aluminum - hot melt adhesive - polyethylene (XLPE) five-story structure, has good mechanical properties, resistance to corrosion resistance, aging resistance, heat resistance and health performance, service life of up to 50 years, environmental awareness is a new green building materials. Ultra-thin ultra-thin stainless steel plastic composite pipe plastic composite pipe used international food hygiene standards permit 304 (Ocr18Ni9) ultra-thin stainless steel, lined with materials of different temperature. It combines high hardness of the metal surface, the overall rigidity, linear expansion coefficient and corrosion-resistant plastic tube, made of thermal insulation and good performance, service life of up to 50 years. Piping mode 1, the ceiling inside the tube by routing out the requirements of smooth vertical and horizontal. 2, the ground or cement mortar for the tiles to find the usual, for the point to point wiring, reducing elbow. 3, the ground is solid wood flooring, piping parallel to the keel, not slotted, vertical piping to be slotted in the keel, the keel slot is strictly prohibited. Another way is to point all the slot. 4, kitchen and ground water piping shall not take the pressure test newly installed water supply pipe must be pressurized test. Test pressure of high-level multi-0.6mpa 0.8mpa, should be no leakage, pressure loss of about 1 hour less than 0.05mpa; metal and composite pipe constant 10min, the pressure drop is not greater than 0.02mpa. Inspection before entering the next procedure. Quality problems in recent years, as in the home decoration design and construction,[url=http://www.beatsbydresale.org/beats-monster-with-fire-c-16.html]Beats Monster with Fire[/url], the designers tend to structural safety and fire prevention of ill-considered, so many problems occur: 1 due to total or partial roof collapse, the ceiling into a off the top. This is mainly because the ceiling and floor, and the keel and veneer combination is not good, or caused by excessive loading. According to regulations, ceiling keel may not distorted, deformed, keel installed should be solid, reliable, around the level of deviation of not more than 5 mm. More than 3 kg heavy chandelier or ceiling fan, can not hang on the ceiling keel, but should be a separate hook. If the use of gypsum board ceiling for decorative panels, its thickness should be about 9 mm. 2 balcony collapse resulting package fixed is not strong. As the current housing design, packaging materials on the balcony did not reserve the Thus, in the package when the balcony doors and windows must be smooth vertical and horizontal, the same level, look no distortion, open welding,[url=http://www.beatsbydresale.org/beats-monster-with-fire-c-16.html]Beats Monster with Fire[/url], fracture. The gap between the frame and the wall should be full compaction. 3 roof damage caused by leaking pipes. Family room in addition to the kitchen, bathroom and down in the water pipes, the radiator in each room are even more prone to problems. Because the pipeline installation is not easy to check, so all pipeline construction is completed, be sure to go through water, pressure checks, no run, run, drip, drain clearance considered. 4 Buried in line, but off. Because many bedroom Buried lines are used, so the head of the household is not easy to check the quality of construction. As a rule, Buried lines can not be directly buried layer of plaster, but to the wire outside casing. The casing can not have twisted wires, connectors. In addition, line installation, be sure to strictly observe the After construction, in addition to electricity checks, headed the construction team but also to provide a detailed circuit configuration diagram. 5 substrate cleaning before painting is not the net, causing paint peeling and shedding. In the wall to finish, be sure to clean and eradicate the original plaster, but can not leave oil. Painted on the wall with wall putty with dense, strong, can not afford leather, not powder, not crack. New home interior decoration Raiders end, first, to ensure that the quality of the decoration after acceptance. This includes One of the As the Some irresponsible construction team often For example, the water supply pipeline is very important to a The decoration, a lot of June 1, the new residential towns in our country prohibit the use of galvanized pipe as a cold water pipe. The formal decoration company, not because it is Will be recommended to customers plastic composite pipe, pp-r pipe copper pipe or, more excellent. In particular, copper pipes, can inhibit bacterial growth, keeping water clean, more than 99% of the bacteria into the copper pipes on their own after five hours after the disappearance. After all pipeline construction, construction personnel are not in accordance with relevant regulations after the injection, compression check did not run, run, drip, leak and other procedures, and direct the Labor Exchange, and the owner is difficult to check in Shoufang are hidden part of the project customers with the naked eye is difficult to find the problem, once discovered a problem, re-transformation of the pipeline, not only costly, but also do a physical and psychological exhaustion. housing within the circuit design specifications. The It is understood that 3.15 period, the popularity of China Association of Science and Technology Ministry, the Ministry of Housing Industrialization Promotion Center and the Joint Advisory International Copper Association, told the customer electrical load shall be designed to 6 kw, 8 branch circuit should be back above the fixed outlet of not less than 25 groups, the front section of the table should not be less than 10m, branch circuit section is not less than 2.5m, air-conditioning and other electrical power is best to take a separate line 4m, kitchen and bathroom 4m of the copper loop is best to use and so on. For decoration, how to design a branch circuit, a fixed socket, the wire and other the inconvenience. Note that ten home improvement construction home improvement process many processes, the construction process are more likely to produce non-standard quality problems, experts advise, home improvement construction projects in the ten hidden process must pay attention to, so as not to stay hidden. Process I: electrical wiring and home improvement process, the circuit transformation is essential, and due to security problems caused by the transformation is the largest. A good circuit rehabilitation programs, should not only focus on safety factors and take into account the external effects, and future ease of maintenance and to ensure economic well in advance of the line on the basis of a 20-year plan. At the same time, the actual construction of the circuit when they adjust capacity to deal with the strength of the electrical interference between each other, scores Road pipeline slot, to the essentials, etc., are to note the process nodes. Process II: intermittent cold water down the water pipes, hot water and a half cold not hot, Sheung Shui, gossamer-fine, poor drainage plug ... These things have a headache, let alone is major incident. Only the quality of the project to prevent flooding should meet the basic requirements, a more reasonable arrangement will have to further consider how to reduce the water in transit in the resistance, how to configure the energy-efficient homes in the indoor hot water, how to combine water and heating up and so on. Process III: gas pipeline in accordance with the provisions of moving gas meter is strictly prohibited, gas pipelines are not allowed to do the underground pipe, but still beautiful and a lot of people to move gas, or gas pipeline wrap. As the highest risk factor in the living room part of the installation of gas piping must comply with regulations, but people today, turn on the decoration effect is not. According to reports, the exhibition will not only various aspects of gas pipeline installation anatomy, as well as a variety of decorative effects processing instances. Process IV: bedroom wall treatment is the face of the wall, why do so many houses will be renovated within six months cracking phenomenon? In fact, the key lies in the base of the handle. There are many details, handled properly, will affect the final surface effects, such as easy collision damage to the corner to take special precautions, wall panels must be firmly pasted primary process ... ... Five: Paint painting and decoration projects in the other phase ratio, brushing the technical content of engineering is actually relatively low, but brushing project is not and other defects. Process six: Install the keel to keel related to the installation of quality flooring. If the foundation did not lay the keel, no matter how careful shop floor, deformation, instability, noise and other issues when walking or will occur. The exhibition will display Process VII: decorative wall and floor tile laying nowadays generally use stone, but these expensive materials often do not like their name sounds like a solid. In laying the proper course of action to achieve both strong and beautiful and the purpose of saving materials, how to distinguish a reasonable choice of laying methods to extend the life of wall and floor tiles, these problems are show-site guided tours. Process eight: floor laying flooring in the bulk of the renovation costs, and quality of the floor and most likely to lead to disputes. Different species, different process when laying the floor made of the differences are subtle, need to have a scientific method of installation. In fact, the floor and wall and floor tiles appear to be superficial, but the real decision lies in the quality of its laying those not see the primary treatment. Process Nine: People often focus only on the ceiling ceiling installation of aesthetics, while ignoring the top of the security. If the ceiling and floor and keel with a combination of veneer did not do a good job, ceiling hanging in the family as head of the sword, the possibility of an accident at any time. Process X: wood processing wood products processing, in particular, sets of doors and windows and other primary treatment is also very important. In addition to strict compliance with technical requirements, not stolen by the process, but also flexibility, on-site temperature, humidity and other factors. Note 1 cable wire is divided into such categories: light line, outlet line and air conditioning lines. In principle, the house is now a new creation, the quality of the wire is possible, it is generally not necessary to re-cable,[url=http://www.beatsbydresale.org/beats-monster-with-fire-c-16.html]Beats Monster with Fire[/url], unless you know your home's wiring not, or you do not worry about money. Therefore, the wire part of it as long as needed to increase and extend it. In general, the single wire square wire 1.5, for lighting; single wire 2.5 mm2 wire for socket; single wire 4 square wire and air conditioning for three or more; single wire into 6 square wire for the total line, color line for the ground wire. Air lines are now ranked a good new home, so, in general, air-conditioning lines need to be increased. Wire recommended panda. Yuba also another socket line cord, which is 2.5 square, square with the 4 best. 2 wooden keel heating cabinets, ceiling, wood floor space under the pavement, have to use wooden keel. The key is to use wood keel can not use poor quality wood. In addition, the need for the fire, wood keel brush 1-2 times should be fire-resistant coating, usually for decoration or to save money the easy way, often ignore this. 3.PVC pipe PVC pipe to protect the wire two main reasons: first, because the protection and insulation; and another important reason is to ensure future maintenance. Imagine, if projects are well hidden after a day in case of a wire out of the question, you can put wire through the PVC pipe out, and back to a good can. If the PVC pipe to wear too many wires do not pull move, after maintenance to speak of. In addition, when PVC pipe butt joints should be used, and use the glue firmly. PVC pipe and wire box and the connection between the cap must use a dedicated trap, do not direct wire box with PVC pipe and butt. Formal practices, the first row of PVC pipe, after the tube is connected, then wire penetration. Unfortunately, most workers are now non-standard operation is to take over while wearing a wire while the child. Oh, this approach can be really difficult to ensure the future success of the replacement wire. 4 If the ground water in the destruction of the original construction of the ground, is likely to undermine the existing waterproof layer. Ground water, is necessary and can not be ignored. Now frequently used waterproof materials: polyurethane coating; water does not leak; plugging spirit; do stop water treatment, water storage provisions should be experiments to see whether the water leakage within 24 hours. 5 Do not close the pipeline will be some renovation process completely closed room in the exposed pipe, and fixed the wearer, such as making packages columns, fixed heating cover, and so on. This is very harmful. In addition it seems a bit neat appearance, no other benefits. 6. 7. 8. 9. The casing can not have twisted wires, connectors.hidden project
Baike card (7) anti-corrosion steel pipe insulation inside and outside; (8) over 1200mm diameter steel pipe ovality; (9) rain water pipes: Block concrete pipe, tube and ancillary structures with hidden parts; (10) Heat pipe: pipe insulation, pipe trench and a small room outside water; (11) hydraulic structures and bitumen waterproofing, including waterproof layer under the layers of detail to do water deformation joints, etc.; (12) communication pipeline; (13) equipment and cement-based concrete reinforcement size, maintenance, grade, surface elevation; (14) optical cable laying, reserved length, joint physical, electrical properties, cable trench excavation and backfill and connecting optical cables; (15) laying grounding, connection of grounding resistance, and (sub-dry and wet two), mechanical and electrical equipment cabinet frame rust and corrosion treatment. As the hidden works in the hidden, if quality problems, had to re-cover and cover-up, rework, etc. will result in very large losses, in order to avoid waste of resources and the loss of both parties to ensure project quality and project successfully completed, the contractor previously hidden in the hidden project, it shall notify the contracting inspection, contract inspection and approval, and allowed to carry out covert work. In practice, when the project has covered, concealed conditions, the contractor should first conduct a self-test, self-test after passing the first hidden in the hidden works promptly notify the contracting or contracting on behalf of the hidden presence of the project site to inspect the conditions and covert operations to participate in the project. Notice, including the contractor's self-inspection records, hidden content, check the time and place. Contract or his accredited representative of the site after receiving the notice, shall be concealed within the required time to reach the scene of the hidden works of the conditions for inspections of qualified, contract, or their accredited representatives of the site sign the record of the inspection, the contractor who pass the inspection before it can be concealed construction. Employer failed examination revealed hidden project conditions, the right to require the contractor to complete projects within a certain period conditions. Hidden project conditions meet the regulatory requirements, contract inspection and approval, the contract or his accredited representative of the site inspection in the inspection refused to sign the record, and in practice can be regarded as contracting has been approved, the construction contractor can be hidden. Employer after receiving the notice, a late check on hidden works conditions, the contractor shall demand Employer within a reasonable period to be checked. Because people do not contract to inspect the construction contractor can not be hidden, so the contractor notify the contracting person who failed to check and inspection contract, the contractor the right to suspend construction. Contractor can be extended duration, and require compensation for contracting the resulting suspension, work slowdown, loss of materials and components backlog. If the contractor does not notify the Employer checks own covert project, after the contract has been hidden on the right to request to inspect the project, the contractor shall be in accordance with the requirements of exhumation and re-cover the check or repair hidden. If upon inspection of concealed works do not meet the requirements, the contractor shall rework, re-cover. In this case, check the hidden project costs incurred, such as inspection costs, rework costs, material costs and other burdens by the contractor, the contractor shall bear liability for breach of schedule delays. Acceptance to the sewer (1) Basic Requirements 1, water supply and drainage pipes and fittings must meet the standards of quality, rigid PVC pipes should be used drainage pipe pieces. Related articles：
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