1. There are many types of work: civil engineering, water supply and drainage, heating and ventilation, air conditioning, strong and weak electricity, communication, fire fighting, decoration, curtain wall, windows, etc. Almost at the same time, it is difficult to arrange assembly line operations. Lobby and corridor are the only places for all types of work, and the lofting, construction, inspection, debugging and decoration of all types of work will affect the dry hanging of marble and the pavement and maintenance of the ground, so measures and schemes must be taken during construction.
2. There are many suspended ceilings: Generally, the suspended ceilings of star-rated hotels are large in area and complex in shape, and the acceptance of concealed works is a major feature of construction. There are many links and departments in the overall test and acceptance of water, electricity, fire protection and spraying equipment in the ceiling, which affects the assembly line operation of the project. In view of these problems, corresponding measures should be taken.
3. Stone workload: floor paving, stair paving, wall surface, cylindrical surface dry hanging, kicking, edging, arc plate, etc. In terms of species, there are: marble, granite and artificial stone, microcrystalline stone and so on.
I. Construction deployment
1, select excellent management personnel and on-site daily management team, and define personnel positions.
2. Provide enough skilled workers: carpenters, oilers, bricklayers, electricians, hydraulic workers, wallpaper workers, coolies and security guards.
3. The machines and tools are well equipped.
Second, the construction process
Because the hotel decoration project has guest rooms and public parts, according to the construction characteristics, considering the difficulty of decoration, material supply and the order of personnel entering the site, Hefei landscape decoration should be constructed in different regions. In order to complete the decoration project with high quality and high efficiency under the condition of shortening the construction period, reducing logistics and reducing labor, it is necessary for managers and professional foremen at all levels to unify their thinking and coordinate their pace, carefully arrange the reasonable interpenetration of working procedures, have foresight in staffing, materials and tool planning, and strive to control the quality, construction period and materials.
General principles of engineering decoration sequence:
1, base first and then finish;
2, first up and then down (that is, first spend the wall and then the ground);
3. Pipes (water and electricity) precede sanitary ware and lamps;
4. Centralized processing of furniture outside;
5. Wallpaper, carpet, glass and other works that are easy to be stained or difficult to protect should be arranged in the later stage as far as possible.
Third, the preparation work before entering the site
1, before construction, fully determine the construction drawings and main material samples with the owner, and organize drawing study and joint review to lay the foundation for the smooth progress of the decoration project.
2. Before the construction, make a detailed material plan according to the engineering quantity, and complete the order of main materials according to the capital and project progress.
3, landscape decoration management personnel stationed at the scene.
4, completes the construction site temporary hydropower facilities and site layout, in order to smooth construction.
5. Arrange workers' catering, living and transportation.
6. Purchase bulk materials and equipment required for the previous project.
7. The first batch of workers arrived: electricians, welders, carpenters, hydraulic workers, warehouse workers, bricklayers, coolies, security guards, etc.
8. Go through all formalities for local construction and worker registration.
9, the material comes into play.
10. The second batch of workers entered the site: carpenters, hydraulic workers, electricians, bricklayers, coolies, oilers and wallpaper workers.
Four. Business contact with investors
In the process of construction, managers should always contact the owner and the supervisor, inspect the construction site together, introduce the construction situation, feedback the opinions of the owner and the supervisor in time, communicate with each other, and enhance the confidence of the owner in the construction.
Main contact work contents:
1. When the project starts, please ask the investor's representative to sign the commencement report;
2. Accompany the representatives of the investment company to inspect the construction site and introduce the construction situation;
3. Attend engineering meetings organized by investors on time;
4. Pay attention to the opinions put forward by investors and explain what can't be done. Design changes must be signed and approved by investors. Do a good job in engineering visa;
5. Invite investors' representatives to participate in the acceptance of concealed works;
6. Assist Party A to handle relevant construction application procedures;
7. Urge Party A to pay the project payment in time as stipulated in the contract.
Five, the construction target management
The project should be equipped with strong management personnel, adhere to comprehensive management, and pay special attention to the four links of quality, cost, time limit for a project and safety. These four links are the four pillars of management, which are interrelated and indispensable. Therefore, the balanced management of the four links is very important. Total management is to plan, implement inspection and summary according to the method of total quality management, so that all work can be continuously improved and step by step.
1, quality: focus on implementing specifications and standards.
(1) Strictly abide by national specifications and process standards.
(2) Establish work instructions, understand what standard goals should be achieved in the work, and implement them according to the goals.
(3) Conduct guidance and inspection during construction, and focus on management of key parts.
(4) research and strive to build high-quality projects with cheap materials.
2. Cost: Pay attention to good materials.
(1) Establish a fixed supply, and the price is reasonable on the premise of ensuring the quality of materials.
(2) Do a good job in material saving and establish a budget acquisition system.
(3) The warehouse shall have a clear overview and understanding of the project, and control the storage and distribution of materials and tools.
(4) Reasonable organization of construction, quick victory, no slowdown and no rework.
3. Duration: The key point is to organize parallel flow production.
(1) Carry out relay management, that is, make clear what is the key point of each working procedure, when to complete and smoothly hand over the next working procedure.
(2) Make a detailed work plan and arrange the order of each work.
(3) Plan and purchase early to ensure the supply and avoid the influence of materials on the construction period.
(4) Labor-saving, developing towards labor-saving and prefabrication.
4. Safety: Focus on prevention. Daily safety work is very important. Regularly clean up and rectify the site, educate workers to abide by safety rules, prevent public hazards, establish a safety reward and punishment system, hold regular safety mobilization meetings, put prevention first, and do a good job in fire prevention and theft prevention. In a word, the above four links are an integrated management that is interrelated and mutually restrictive.
Six, the construction schedule management
1, project progress; (Completed with the cooperation of the construction party)
2, the construction schedule. (to be formulated by the construction party according to the number of construction personnel present and the expected number)
Seven, the main material plan
1, material procurement plan; (The detailed plan shall be formulated by Party A's competent purchasing personnel)
2, material approach arrangement. (The manager of Party A's security department shall make plans and divide areas)
Eight, the main construction technology and quality requirements
For the decoration project, regardless of the size, duration and cost, the process scheme with higher requirements than related projects should be adopted. The qualified rate of sub-projects is 100%, and that of unit projects is 100%. Single project acceptance rate 100%, excellent rate is not less than 80%; Quality management is to achieve quality objectives and quality assurance. For the construction of this project, we must focus on the word "earnest" on the basis of the original design scheme unchanged. The same process plan, different working attitudes and little differences will make the final result quite different from the expected one. Therefore, in the process of Hefei landscape decoration construction, we should adhere to three principles: everyone is serious, layers are serious, and everything is serious. In the process of construction, every working procedure, every link, even every brick, nail and paint should be carefully operated 100%, combined with various guarantee measures and management systems, so as to complete the hotel construction well.
Nine, the specific project construction procedures and standards:
(A) the construction of the bathroom
1. Construction process: handover and acceptance of fine decoration → pay-off → fabrication of door cover and steel frame of washbasin → cleaning and waterproofing → closed water test → leveling of protective layer cement → laying bricks with elastic lines → tiling → fabrication of countertops → positioning of bathtub → inspection of water for top pipeline construction and fabrication of northern base course of thermal insulation layer → laying of ceiling keel and water retaining stone → fabrication of skirting line (partially omitted) → finding wall bricks.
2. Construction preparation: Carry out the handover and acceptance of rough surface decoration according to various technical standards (hollowing, angle of yin and yang, ground elevation, light switch, elevation of upper and lower water pipes, horizontal position, etc.). ) and the acceptance formalities and records.
3. Pay-off: Pay-off the toilet horizontally with the usual relative elevation of+1.5M, find out the unreasonable places on the ground and other grid fittings, and make it on this basis.
4. Manufacture of wooden door cover in bathroom: According to the finished surface of roughly decorated wall surface, make the width of door cover suitable for correct wall surface (the finished surface of ceramic tile inside the door cover), so as to achieve the purpose that the wood is made at one time, the base plate of the door cover is subjected to anti-corrosion treatment, and the hardware part is reinforced with wood squares, which brings convenience for future installation and locking.
5. Waterproof construction: the key of this project. After the ground is completely dry (every week), the first waterproof treatment is carried out, and the ratio is different according to different waterproof materials. /kloc-waterproof for the second time after 0/2 hours.
6. Closed water test: After the waterproof layer is completely dried, conduct a closed water test for 48 hours, and then proceed to the next working procedure after confirming that there is no water leakage.
7. Cement leveling of protective layer: leveling shall be carried out according to the paving requirements of ground surface materials. For example, the floor is ceramic tile, the leveling layer elevation is minus 25mm, the marble is minus 60mm and minus 70mm (this height is the relative height of the doorway), and the leveling ratio is 1.5%.
8, wall and floor tile paste: basic treatment → leveling → brick selection → brick dipping → pay-off → sequential arrangement → brick sticking → seam wiping.
(1) Brick pasting: When pasting large bricks, appropriate amount of fine sand should be added to increase the strength. 1.5-2mm, vertical and straight shall not exceed 2mm ... Check with a 2m ruler or ruler. Brick joints must be horizontal and vertical, and the spacing should be controlled within the range of1-1.5 mm. Broken bricks should not be pasted at the support of protruding pipes, and should be cut in the whole brick. If it is found that the paste is dense during construction, it must be removed in time and pasted again. Bricks shall not be filled with ash to avoid hollowing out. Construction sequence: first wall, then ground, first front, then side, and the wall is pasted from bottom to top. Bricks shall not move or vibrate within 20 minutes after being pasted. Before pasting, the line must be positioned to determine the elevation of the first brick. Tiles must be soaked for 2 hours before they are taken out to dry. The wall should be wet half a day to one day in advance to avoid absorbing water from bonding mortar. The joint width of ceramic tile shall be 1- 1.5mm, and the joints shall be consistent. Bonding mortar thickness of about 5mm, the back of ceramic tile must be filled with plaster slurry, and the corners should be filled with mortar. After the brick is in place, tap the brick surface with wooden handle and ash spoon to make it flush with the adjacent surface. After pasting the 5- 10 block, check the flatness with a ruler board, pull out the joint with a gray spoon, and cut the brick edge at a 45-degree oblique angle with a cutting machine at the external corner to keep the joint straight and dense. Pay attention to the launching slope when pasting on the ground, which is generally required to be 1.5%, and the slope should be uniform to avoid backflow. Before the succession, the surface must be dusted, the seams must be scraped with bamboo sticks and cleaned with cotton silk. After all the work is completed, use white cement slurry (or caulking material) for jointing, and clean the surface after the caulking material hardens.
(2) Bricks should be arranged in advance before sticking to make flat-fell seam even. The same wall should not have more than one line of non-integral bricks, and the non-integral brick lines should be arranged in secondary parts or internal corners. The mosaic form and joint width of glazed tile should meet the design requirements. If there are no design requirements, samples can be made to determine the mosaic form and joint width.
9. Installation of sanitary parts: Install according to the design and process requirements, distinguish the order, from top to bottom, from inside to outside, and ensure the quality.
10, bathroom, kitchen all marble countertops or granite countertops connected to the wall should be sealed with sterile glue.
(2) Wall and floor tile construction
1. Construction sequence: wall inspection → grass-roots treatment → elastic line selection → brick selection → soaking → brick sticking → joint wiping.
2. Precautions: The base must be firm, flat, square, vertical and free from hollowing, and the reserved parts should be chiseled in advance. Choose bricks carefully, the colors should be consistent, and the patterns should find the right splicing direction. The corners should be cut neatly, and the side should be pressed in front to avoid the line of sight. Jointing cement should be dense, lower than the brick surface, and should be flat up and down. Without swelling or deformation. Corner founder, seam in advance, elastic line, patched brick should be greater than or equal to 50mm, and the upper and lower cut bricks should be no less than half a brick.
(3) Stone paving construction
1. Ground paving stone: Before construction, the concrete cushion should be cleaned and wetted with water. If you find that the cushion is empty, pry it over and level the empty part again; The bottom of white marble on the ground should be impervious.
2, the construction method:
(1) Conduct on-site test according to the construction drawings, be familiar with each part, size and practice, and find out the relationship between the hole edge, corner and other parts.
(2) Trial arrangement and trial assembly: Before laying, try to assemble stone plates in different places according to the color and texture of the pattern, arrange them in two directions, and then put them neatly according to the number. In two directions perpendicular to each other indoors, spread two pieces of dry sand, the width of which is greater than that of the plates and the thickness is not less than 3cm. Arrange the plates according to the drawings, check the gaps between the plates, and check the relationship between the plates and the walls and column holes.
(3) According to the test results, pull the vertical control reticle at the main position to control the position.
(4) Before paving, clean up the cushion layer, sprinkle water and wet it, sweep the cement slurry, determine the thickness of the ground adhesive layer according to the horizontal line, pull the crosshair, lay the adhesive layer at the cost price (generally using 1: 4 hard cement mortar), and then lay it from the inward door and pat it flat.
(5) first spread the slate from the inside out, and press the trial number. When pouring, the four corners fall at the same time, hammer the board flat with a rubber hammer, level it with a spirit level, lift it after correction, and pour the pro-cement slurry in place. After the first piece of paving is completed, it will be paved to both sides and backwards in turn. When cracks are found, the plates should be hoisted, and mortar should be filled before installation. The joints between plates are tight, generally leaving no gaps.
⑥ jointing should be done after paving 1-2 days and nights. Mineral pigments with similar colors to stone materials should be selected and mixed with cement evenly to make cement slurry, which should be gouged with jointing chisel and then cleaned with cotton yarn.
3, quality requirements:
(1) shall be firmly bonded to the base, and there shall be no empty drum.
(2) The surface is neat, the color is consistent, the seams are straight and the patterns are natural.
(3) The board has square edges and corners, and there are no cracks, cracks and corners.
4, allowable deviation:
(1) The allowable deviation of surface flatness is 65438±0mm, and it shall be checked by 2m guiding rule.
(2) The allowable deviation of joint straightness is 2mm, 5m, and the sideline is less than 5 Milla.
(3) joint height difference is not more than 0.5 mm. ..
(4) Plate gap width shall not be greater than 65438+/-0 mm when there is no requirement for design. ..
(4) Wall and cylindrical stone wet paste construction
1, preparation:
(1) Clean the concrete base, water it and wet it. If there is empty drum in the cushion, pry it up and level the empty drum.
(2) If the base of the wall and column is smooth, it should be trimmed with cement mixed with 107 glue after cutting, so as to ensure that the stone material is firmly bonded with the base.
(3) check the verticality of walls and columns.
2, construction technology:
(1) According to the actual measurement, determine the thickness of stone facing, and make some ash cakes on the wall and cylinder.
(2) Trial arrangement and trial spelling, namely, try spelling the stone plates according to the design color and texture before pasting, arrange them according to the numbers in two directions, and then put them neatly according to the numbers.
(3) According to the height of the first row of stone materials and the thickness of mortar joint, draw the edge line based on the two ends of the wall, and then punch holes according to the pre-arranged stone materials. In operation, the stone is fixed on the wooden frame, and two holes are drilled on the upper facet of the plate, which are about a quarter from both ends of the plate, with a diameter of about 5mm, a depth of about 15mm and a distance of about 8mm from the back of the plate.
(4) Temporary fixation: from bottom to top, put the plates in place according to the line, and the upper end of each plate is fixed on the wall with copper wire with a diameter of 4 or 3.2, and the copper wire and the stone are inclined at 45 degrees. In this way, each block in each row is temporarily fixed in turn, stabilized with a wooden wedge, and then checked and adjusted in turn with a level. Cylindrical surface should be constructed clockwise, generally starting from the front. After the first layer of decoration, find the verticality with a guide rule and a plumb, and level it. If it is found that the plate specifications are inaccurate or the plate gaps are uneven, lead skin should be used for filling to ensure that the plate gaps are even after decoration.
⑤ Grouting: 1: 3 cement mortar mixed grouting is adopted. During grouting, do not touch the pad or dump it from one side. Pay attention to whether the plate moves, and if it does, adjust it immediately. The grouting height of the first layer is generally not more than one third of the slab height. After the initial setting of the first layer of mortar, confirm that the plate has not moved, and then conduct the second grouting. The height of the first grouting * * * is one third of the height of the slab, and the third grouting is 5cm below the top of the slab as the joint of the upper slab.
⑥ Sealing: After cleaning the surface, prepare cement slurry for sealing according to the color of the plate, and clean it while sealing, so that the gaps are dense and clean with the same color.
⑦ finished product protection: If the gloss of the surface layer is affected after installation, it should be waxed and polished again, and the stone surface should not be scratched with sharp tools or painted with oily color, and measures should be taken to protect the edges and corners.
3, quality requirements:
(1) The variety and color of stone must meet the design requirements, and there can be no defects such as cracks or lack of stare blankly.
(2) The surface is clean and the gap is even.
③ Allowable deviation range: vertical elevation ≤2mm, joint height ≤0.3mm, glossy surface ≤ 1mm and right angle ≤2mm.
(5) wall dry hanging stone construction:
1, construction preparation:
(1) The thickness of stone is generally 25mm ~ 30mm, and the size, specifications and varieties of stone are determined according to the design drawings. M 12* 130 stainless steel expansion bolt and accessories (T, L type). Class C M5*40 hexagon-head bolt (GB578 1 type), No.65438 channel steel of main keel and L50 * 5 angle steel of secondary keel shall be rustproof (except galvanized profile). The electrode is E4303 with a diameter of 3.2. The fixing material is bad epoxy resin or marble glue, and the sealing material is foam strip and sealant.
② Machines and tools: electric welding machine, metal cutting machine, hydraulic impact drill, bench drill, wire drawing board, trolley, glass glue gun, wire hammer, star, electric welding hammer, paint bucket and adhesive tape paper.
2, construction conditions:
(1) go through the formalities of structural acceptance and concealed acceptance, and a few jobs (water and electricity, communication, equipment installation, etc.). ) has been completed, and all the water and electricity needed for processing are ready.
(2) the surface flatness deviation is not more than 4 mm ..
(3) Scaffolding meets relevant requirements.
3, construction technology:
① Survey and setting-out: play the horizontal elevation line and the center line well, frame according to the design requirements and the given datum line, and pop up the vertical and horizontal (primary and secondary) keel positions. According to the size and concavity of each wall, survey control points are set at the upper and lower sides and the center of the wall respectively. Hang horizontal and vertical control lines with # 10 line to control the yin and yang angles of adjacent walls. Use a line hammer to find out the verticality of the stone wall and cylinder from top to bottom, and pop up the dimension line of the stone balcony according to the drawing. This line is the baseline for the installation of the first layer of stone.
(2) Trial arrangement and numbering of stone materials: After the stone materials enter the site, they should be stacked indoors, with square timber under them, and the quantity and specifications should be checked. When the colors are not uniform, they should be selected, pre-arranged, matched with flowers and numbered, so that they can be used according to the number when they are formally installed. Stones with large chromatic aberration can also be installed after being confirmed by the quality inspector, the design unit and the investor, but they must be installed at the secondary site.
③ Angle code installation.
④ Install the main keel.
⑤ Secondary keel installation
⑥ Rust prevention treatment of keel.
⑦ Concealed acceptance.
⑧ Install the suspension console.
Pet-name ruby stone trough: according to the design requirements, two troughs are carved at the upper and lower ends of the stone. When the slab is more than 600 mm, the three troughs are 1/4 wide, 6mm wide, 30-50mm long and 5mm deep. After the groove is removed, the groove wall on the back of the stone material should be removed from the groove with a steel chisel and the pendant should be buried.
Attending stone trial installation and adjustment: generally, the installation is carried out from bottom to top. According to the elevation of horizontal seam of stone material, stone material shall be installed on the sideline, and the seam width shall meet the design requirements. Fix the pendant and the board with the nut (or marble glue) of the pendant.
⑾ After the stone is installed, after passing the inspection of "self-inspection, mutual inspection and special inspection", crack treatment is carried out, mainly to clean up the residual sundries between cracks.
⑿ caulking and gluing: the embedding depth of foam strips should not be too deep or too shallow, which is generally 1/2 of the thickness after gluing. After the foam strips are embedded, tape paper should be pasted again, and the joint width must be consistent. After the tape paper is pasted, it should be sealed and glued. After gluing, polish the glue with a small round stick (or the back seat of a plastic bottle), which is generally U-shaped, and then tear off the adhesive tape to avoid polluting the stone surface. After the sealant hardens, all the residual glue on the surface should be shoveled off and dusted.
[13] finished product protection measures: after the installation of stone cylinder and door cover, all external corners on the surface should be protected with wooden boards in time. At the same time, clean up the residual dirt in time. After the installation of the stone wall and cylinder, it is necessary to stick a sticker or plastic film to protect it in time. If necessary, a fence can be erected and marked with the words "finished product protection" to ensure that the wall is not polluted. If you need to add other decorations after the scaffold is removed after the stone is installed, it is forbidden to lean the inclined ladder directly against the wall, and elevators or other feasible climbing tools should be used. Do not conduct electric welding on the installed wall. When necessary, use thick plywood or asbestos cloth for protection before construction to ensure that the stone surface is scratch-free.
4, quality standards:
① Guarantee items: the variety, specification, color and pattern of stone must meet the relevant standards and design requirements. The installation must be firm, without skew, missing corners, cracks, weathering and other defects.
② Basic items: The surface should be smooth, clean and of the same color. Set cutting should be consistent, with neat edges, straight transverse joints, straight joints, consistent width, dense filling and consistent color. The pressing direction of the plate at the angle of yin and yang is correct, and the use position of the non-whole plate is suitable. Drip line is straight and the slope of flowing water is correct.
③ Allowable deviation items: vertical deviation of facade (checked with 2m dragging board and feeler gauge), glossy surface and mirror surface: indoor not more than 2mm, outdoor not more than 3mm. Rough grinding, pitted surface, striped surface,: indoor not more than 3mm, outdoor not more than 6 mm. Surface flatness deviation (checked with 2m dragging board and feeler gauge): glossy surface and mirror surface: not more than1mm. Rough grinding, pitted surface and striped surface: not more than 3 mm. Square angle: check with 20mm square ruler and feeler gauge, not more than 2 mm; Seam straightness: check 5m with fishing line (cotton thread), no more than 2mm, and seam height: check with angle ruler and feeler gauge, no more than 0.3mm；; Deviation of joint width: measured with a square or steel ruler, it shall not exceed 0.5mm, and the top of dado shall be straight; Use fishing line (cotton thread) to pull 5m for inspection, which shall not exceed 2mm.
5, pay attention to the finished product protection measures.
(6) Light steel keel plasterboard construction
1. Construction sequence: Pre-check all hidden items on the roof → leveling line → welding suspenders → installing main keel and fixing auxiliary keel → installing cross brace keel → leveling with stay wires → plasterboard → mending joint.
2. Precautions:
(1) structural engineering shall be accepted.
(2) Install ventilation pipes.
(3) Electrical pipe fittings to be installed.
(4) Pipes to be installed.
⑤ Spray system should be installed.
6. Install large lamp hanger.
⑦ Installation and maintenance ....
Today keel material should comply with the design requirements, smooth and straight, bright coating; Gypsum board is flat and undamaged, and there is no empty drum in the founder, which meets the use conditions. For C50 special large area, the main control should use C60 series.
Pet-name ruby boom spacing 10mm, diameter of 8 wire rod straightening, set of wire length above L50mm, antirust processing. The main keel spacing is less than @ @ 1000mm, and the auxiliary keel spacing is between @ 300-400. Weld the main keel around the above holes or inspection openings, and fold the cabinet with T-shaped aluminum keel. When installing the main keel in a large room, attention should be paid to arching, which is generally short-span 1/200.
(7) Construction of latex paint for ceiling and wall surface
1, Features: Advanced latex paint is an advanced matt paint made of acetic acid, ethylene and acrylic acid, which has high adhesion, antibacterial and alkali resistance. Odorless and nontoxic, convenient for construction.
2. Construction sequence: base treatment and joint repair (quick-adhesion powder and glass fiber), dressing and alkali-resistant primer → putty scraping → polishing → primer coating → intermediate coating → surface coating.
3. Note: The interval between each working procedure (at 5-20℃) must be greater than 10 hour. After each process is completed, it must be polished with 360 mesh water sandpaper, and brushed or sprayed with pure wool strokes for the last time.
(8) Electrical installation and construction
1. Material requirements: All incoming materials shall have product certificates, distribution boxes shall be products of two designated factories, and PVC smoldering pipes shall meet the requirements.
2. Elastic line positioning: according to the construction specifications, design requirements and building marks, determine the position and elevation of electrical equipment.
3. Piping: Piping shall meet the design requirements. When connecting and entering the box, threaded connection can be used for open and concealed installation. Metal pipes must be connected by jumper wires. It is forbidden to connect and fix TC pipes by welding. Bending radius and bending flatness should meet the specification requirements. The pipeline should be clean, the nozzle should be polished and smooth, and keep a safe distance from other pipelines.
4. Threading in the pipe: The specification and number of wires meet the design requirements, and it is forbidden to have broken ends in the middle. Before threading, check whether the pipeline is unblocked and remove impurities in the pipeline; Check whether the mouth guard of the nozzle is neat. Use a special wire cap or brush tin at the threaded joint. After threading, do insulation shaking test. Only when it meets the specifications can it be powered on for trial operation.
5. Electrical installation: The specifications, models, heights and positions of lamps and lanterns should meet the design requirements and construction specifications. Lamps exceeding 3kg must be embedded with hooks or screws; The embedded parts must be solid and reliable, and the wires in the light box are separated from the light source; For lamps below 2.4 meters, the metal shell part should be grounded or protected by zero.
6, switch, socket installation position should be correct, the same place switch position should be consistent, switch should cut off the phase line, telephone socket, junction box and other equipment should be installed firmly and correctly; Before conducting wire connection, sundries should be cleaned and boxes should be leveled. The grounding (zero connection) protection measures and other safety requirements of the distribution box must conform to the construction specifications and be installed firmly and reliably.
(9) Special instructions:
1. Install partition keel, pre-arrange the position of electrical pipeline and fix the position of electrical box, and then block it with rock wool and gypsum board.
2, take cover engineering construction by technical director detailed disclosure, quality inspection personnel tracking inspection, must not be allowed to appear hidden dangers.
3. Hardware, paint, carpet, wallpaper, curtain box, electrical panel and sanitary ware shall be installed. While ensuring the design effect and beauty, it must be sturdy and durable. After four seasons, it will not deform, crack, loosen or blister, and it will be used normally for 2-3 years without maintenance.
(10) wallpaper construction
1. Construction sequence: wall cleaning without hollowing → painting bottom oil → scraping putty → polishing sealant → cutting wallpaper → splicing → clockwise → cutting.
2. Note: The wall and back of the paper should be coated with glue, which should be thin, even and not wrapped. After the back of the paper is coated with glue, the glue surface and the glue surface should overlap to avoid the glue drying quickly and facilitate wall hanging. After brushing 5- 10mm, it can increase by about 0.5%-0.8%, shrink by 0.2%-0.8% after drying, and naturally tighten after drying. The first wallpaper should be attached with elastic thread, and the length of mosaic should be paid attention to when cutting paper, leaving enough margin.
(1 1) Stair engineering construction:
(1) Stair handrails shall be installed on stair walls and step finishes, with metal handrails and iron handrails against the wall, and shall be carried out after inspection. Wooden handrails should be made and installed on site according to the design requirements and actual situation. Elbows of handrails shall be integral elbows. The depth of the groove at the bottom of the handrail is 3-4mm, and the width is the same as that of the flat iron. Handrails shall be installed from bottom to top. First, the starting elbow should be equipped according to the slope of the column, and then the handrail should be connected. Joints shall be anchored with concealed tenons or iron pieces and bonded with glue, and the ends shall be connected with walls and columns with flat iron.
(2) The installation of metal stair railings and handrails should be based on the design requirements, and the installation spacing position of railing uprights should pop up. First, install the uprights at the starting point of the stairs and at both ends of the platform, and then install other uprights in the same way. Handrails shall be installed by welding, starting from the initial elbow and then connecting with straight handrails. The interface should be cut correctly according to the required angle and filed flat. During installation, the initial elbow should be fixed with the railing column by spot welding, and the elbow can only be welded after installation. After the elbow is installed, the upright posts at both ends of the handrail are temporarily fixed by spot welding, and one end of the straight handrail is butted with the elbow and fixed by spot welding. Then the handrails are fixed with each column by spot welding, and after inspection, they are formally welded and polished.
(12) carpet laying construction
1. Construction sequence: cleaning the ground → nailing around → leveling and laying primer → hot joint → cleaning.
2. Precautions in construction: The floor must be flat and dry, and the carpet should be spliced with lines, colors and shading. Connect the edges with flat-fell seam ironing belt, and the nails around are firm and evenly distributed. The seams of the wall are even and there are no waves. The door is located in the middle of the crack, and there is no gap from the outside. The blank holder is firm and tidy. The fluff should be straightened. Keep it clean, free of oil and other sundries.