The cable tray installation construction program is designed to ensure that the cable tray construction quality and quantity, to provide a favorable guarantee for the completion of the schedule. The following is a sample of cable tray installation construction program.
Cable bridge installation construction program1
A project overview:
1, project characteristics and major issues: Hongji Mall project is located in Tianjin Tanggu District, Jiefang Road, a busy street, west of the Jinyuanbao commercial building, southeast of the commercial building, east of the school street. Cable tray on the power trunk line and weak power engineering wiring to play the role of bearing frame.
2, construction site conditions: building construction site is narrow, cable tray from the east and southeast door into the field. Jiefang Road is a busy street, foreign vehicles can not enter during the day, only the night into the material. 3, the main factors affecting the project: tight schedule, the construction site is narrow, difficult to store, inconvenient transportation is the project's problems, and then: civil construction of the wet work and the fire, plumbing and heating of the pipeline has not been constructed is the most important factor affecting the bridge installation schedule.
4, the depot selected: can choose the south side of the lobby area for enclosure, plus the door and lock as a depot, night guards.
Second, the construction process and quality measures:
1, construction procedures:
Bridge selection? Appearance check? Support, hanger installation? Bridge assembly? Cable laying
2, construction preparation:
Familiarize with the drawings, verify all the elbows, tees, straight segments and other relevant data in the drawings, according to the construction schedule, equipped with labor force, and put forward the material preparation and procurement plan. On-site construction requirements: civil engineering should be completed, reserved holes and embedded parts in line with the requirements of all kinds of pipeline construction is completed and the test pressure qualified. Check the elevation of the decorative ceiling, calculate the elevation of each section of the bridge and make detailed markings on the drawings.
3, technical support:
As the project opened on October 1, 20XX, September 15 trial operation, the schedule is extremely tight, fire water and various pipelines have not been on the interior has not yet been out of the drawings to determine the elevation, is now arranged for the construction period of the bridge for 24 days, that is, 20XX.6.13 ~ 20XX.7.7, the construction of the floor order according to the completion of the floor of the fire and the ducts go, the control point duration is as follows:
3, technical support:
As this project opened in 20XX.6.13 ~ 20XX.7.7, construction floor order according to the fire and duct completion floor go, the Control point duration is as follows:
20XX.6.13 start, line, drilling
20XX.6.16~6.20 support hanger construction
20XX.6.16~7.6 bridge assembling, laying finished
200.7.7 adjustments, cleaning
Construction foreman in the premise of familiarizing with the drawings and construction programs, reasonable arrangement of construction processes, laying completed
200.7.7 construction of the construction program, the construction of the construction program is the first time, and the construction of the construction program is the first time. Under the premise of familiarizing with the drawings and construction plan, the construction foreman will reasonably arrange the construction process and labor force, and make the corresponding technical briefing to the operators, implement the quality assurance plan, and implement the important links and special points of the construction to every person in the team and let them know the process and progress of this construction. First of all, each person who enters the construction of this project should carry out technical examination, electrician and welder must hold ? Special work type induction license? At the same time, in the construction of the inspection, the unqualified construction personnel resolutely removed to ensure the quality of personnel in this cable bridge installation project.
4, technical requirements:
(1) bridge weld surface uniformity, there shall be no leakage of welding, cracks, slag, burn through, zinc tumor and other defects, spraying should be flat, smooth, uniform, no skin, no bubbles.
(2) under the premise of construction in accordance with the plan, the bridge should be installed as far as possible in the buildings, structures, and should meet the installation requirements, maintenance requirements.
(3) the upper part of the bridge from the shed or obstacles should try to be greater than 0.3 meters (individual points can be an exception).
(4) when the bridge is laid horizontally, the support hanger spacing of 1.5 meters, vertical laying of fixed points for 2 meters, boom specifications for the ?10 ~ ?12.
(5) the bridge can be used to expand the pipe bolts or welded in the pre-embedded iron fixed.
(6) cable tray more than 30 meters straight section, it is appropriate to use expansion joint plate.
(7) cable tray system should have a reliable grounding, each two sections should be connected across the copper wire.
(8) The maximum deflection value of the bridge rated load and length ratio is less than or equal to 0.01.
(9) Prior consideration should be given to meet the maximum cross-section of cables laid on the bridge bending radius of the requirements, and to consider the arrangement of the cable location.
Third, personnel and tool arrangements:
Personnel: the project counts more than 2600 meters of each type of cable tray, 680 integrated working days, requiring 14 workers, local work period section requires overtime.
Materials and equipment: various types of cable trays and accessories, latitude and longitude, hammer, drill, wrench, tape measure, welding machine, insulation resistance tester.
Fourth, the project schedule: (see attached)
Fifth, safety and civilized construction:
1, electricians, welders must be held at the provincial level or above professional assessment issued by the operating license.
2, welding workers to enter the scene of the welding machine, before use to strictly check whether the leakage of electricity, short circuit, poor contact and other phenomena before use, is strictly prohibited the use of welding machine with disease. After work to cut off the power supply in a timely manner, the welding machine with waterproof material cover.
3, in strict accordance with the national welding safety regulations construction, strictly prohibit unauthorized operation and non-electric welders to use the welding machine. No operator's license is not allowed to use the welding machine.
4, with electric hammer, site lighting and other electrical appliances must have an electrician responsible for wiring, and test run after normal others can use. If the site is wet, the operator must wear insulated shoes, with insulated gloves, otherwise it is strictly prohibited. It is strictly prohibited to use aluminum wire, copper wire, iron wire, etc. instead of fuse use.
5, the electrician must strictly implement the safety and technical regulations, is strictly prohibited to work against the rules. Civil engineering and other engineering cross work to be done to? A slow, two look, three through? In the construction of unsafe factors found in a timely manner to contact the person in charge of construction to be resolved before construction, not dangerous construction.
6, into the construction site must wear a good helmet, according to the dress code, not wearing a helmet is strictly prohibited to enter the scene.
7, into the construction site is strictly prohibited to use all kinds of electric machinery, tools and other equipment.
8, class site management personnel must firmly establish the safety first, prevention-oriented safety thinking, in the construction production schedule and safety conflicts must first be the first choice for safety, no one shall not violate the command construction.
9, forbidden to enter the construction site after drinking.
10, the construction process must be made to the safety first, think of safety everywhere, work at height to fasten the safety belt, high stools, ladders on the job to do a good job of non-slip protection. And a person to operate a guardian. Work is not allowed to wear slippers, barefoot, bareback.
11, to frequently check the distribution box, power tools and other grounding, wire and cable insulation is broken. Strictly pull the temporary line, really need, according to the requirements of the correct construction, to do after the use of timely removal, leaving no hidden danger of accidents.
12, housing is strictly prohibited the use of high-power light bulbs, electric stoves and other electrical equipment. Lamps and other electrical equipment is not used in a timely manner to pull the switch, so that people go off the power, saving electricity. All construction machinery should be installed leakage switch. Seriously implement the provisions of a machine, a gate, a leakage.
Cable Bridge Installation Construction Program 2
First, the preparation of the basis
1, building electrical engineering construction quality acceptance specification (GB50303-20XX)
2, Shaanxi Provincial Architectural Design and Research Institute of Xi'an Jiaotong University, designed by the first hospital in Xi'an, the medical complex of the electrical construction drawings
Second, the project overview
The electrical project is divided into strong power part, weak power part, automatic control part. Strong power part mainly includes high and low voltage system, lighting system, emergency lighting system, power system, lightning protection and grounding system. The weak electricity part includes: automatic fire alarm and linkage control system, broadcasting and emergency broadcasting system, medical call system, cable TV system, IC card telephone system, security monitoring system. Self-control part of the main building control system, building self-control using centralized management, decentralized control system by the field control level and the central management level of the two levels, the field control level using digital control unit (DDC substation) to achieve data acquisition and in situ control and display, management level that is, the monitoring host for the entire building systems for the centralized management, display, printing, storage and alarm processing.
Ⅰ, indoor cable tray installation project
First, construction preparation
(a) operating conditions
1. Technical preparation: review the design drawings, on-site investigation of the installation location of electrical equipment and cable tray installation routes; cable tray route; the type of building structure; pre-buried holes in the location, size.
2. Preparation of the construction program: according to read the map and survey records, selected cable tray in different building structure sections of the installation type; according to the contract duration and construction personnel to determine the composition of the construction organization.
(B) material requirements
1. According to the design requirements of the specifications, site survey records and construction programs to prepare the material use plan, including a variety of specifications of the straight section of the cable tray, bend through the bridge accessories and supports, hangers and so on. Note that the various materials required for cable tray installation are required to use galvanized materials.
2. According to the design requirements and site survey records, the preparation of cable use plan, including various specifications, models of power cables, control cables.
3. Cable bridge incoming inspection:
(1) bridge product box should have packing list, product certification and factory inspection report, and inventory according to the list of specifications and number of bridges or accessories.
(2) check the thickness of the bridge wrench should meet the following requirements: slightly
(3) bridge appearance check the measurement of the external dimensions and nominal model specifications are consistent.
Hot dip galvanized bridge coating surface should be uniform, no burrs, over-burning, hanging ash, scars, circumference not galvanized (diameter of 2mm or more) and other defects, thread coating should be smooth, the bolt can be screwed in. Bridge bolt hole diameter in the screw diameter is not greater than ?16, can be larger than the screw diameter of 2mm. the same set of two adjacent holes within the spacing allowable deviation of ?1.2mm.
(4) After the completion of the inspection work, the results will be faithfully archived. The collection of product certification and factory inspection reports are organized and filed together.
(C) the main machine
1. Electrician's tools, hammer, drill, steel tape measure, powdered wire bags, etc..
2. Mobile compensation box, mobile cable tray, latitude and longitude meter, level meter, insulation resistance meter, multimeter, Gordon, ladder, welding machine and so on.
Second, the quality requirements
Quality requirements should be in line with the "building electrical engineering construction quality acceptance specification" (GB50303-20XX).
Third, the process
Drawing line positioning? Fixed parts installation? Bridge support installation? Installation of trays and trunking of bridge? Grounding protection of metal bridge? Laying cables
Fourth, the operation process
(a) Drawing line positioning according to the design drawings or construction program, from the beginning of the cable tray (first trunk line after the branch line) to find a good horizontal or vertical line, determine and mark the specific location of the support.
(B) the installation of fixed parts metal expansion bolts installation
(1) used in C15 or more concrete components and solid brick wall, does not apply to hollow brick wall or ceramic concrete blocks and other light walls.
(2) The error of drilling diameter shall not exceed +0.5mm ~ 0.3vmm; the error of depth shall not exceed +3mm; the residual debris in the hole shall be removed after drilling.
(3) The depth of drilling should be buried in the casing all the way into the wall or roof plate, and the surface is flush.
(4) With a wooden hammer or pad with a wooden block and then hammer the expansion bolts into the hole, bolts are fixed, the head deflection value should not be greater than 2mm.
3. Pre-embedded iron self-processing dimensions should not be less than 120?60?60mm, pre-buried in the civil engineering structural construction, pre-embedded iron plane should be tightly attached to the template and should be fixed firmly.
(C) bridge support installation
1. Bridge support in the indoor installation of several commonly used forms, refer to the standard atlas 86SD169 "cable tray installation".
2. Homemade brackets and hangers used flat iron specifications should not be less than 30mm?3mm, flat steel specifications of not less than 25?25?3mm, round steel is not less than?8. Homemade hanging bracket must be corrosion-resistant according to design requirements.
3. Brackets and hangers should be installed with a line or line straightening, leveling with a level ruler to ensure that the installation of vertical and horizontal.
V. Safety precautions
1. Cable tray installation, there should not be people staying below. Entering the scene should wear a helmet.
2. The use of ladder must be strong, from the foot of the ladder 40 ~ 60cm to set the pull rope to prevent splitting. The upper end of the single ladder should be tied down firmly, and the lower end should be supported by someone
.
3. Use of electrical equipment, power tools to have reliable protection of grounding (zero) measures. When eyeballing, wear protective glasses, and no one shall stand below the workplace.
Ⅱ? Electrical shaft cable bridge project
I. Construction preparation
(a) operating conditions
1. civil wall structure has been popped out of the construction of horizontal lines, wall plastering and surface layer has been completed.
2. Cable bridges and through the floor of the reserved holes have been dealt with, the installation of fire partition buried pieces have been organized.
3. Installation of cable trays required for the bracket and other accessories have been processed.
4. Electrical pre-buried piping in the shaft has been organized.
(B) material requirements
1. All cable tray in the electrical shaft, specifications to meet the design requirements, using galvanized products, galvanized steel thickness in the bridge width less than 400mm, the thickness is not less than 1.5mm; between 400 ~ 800mm, the thickness is not less than 2mm; greater than 800mm, the thickness is not less than 2.5mm.
2. Cable tray should be straight, no obvious distortion, the bracket should be welded firmly, no significant deformation, undercutting error should be within the range of 5mm, the incision should be no burrs.
3. Fire plugging (fire pillow), fireproof paint should be selected by the national identification of the stereotypes of the product.
4. Distribution box in the shaft should have a factory certificate, production license,?CCC?certification mark and a copy of the certificate and test records.
5. Wires, cables and accessories should be selected in accordance with current national technical standards of the product, and there should be factory certificates,?CCC?certification mark and a copy of the certificate of authentication. Wire, cable should also have a production license.
6. Auxiliary materials used in the electrical shaft: drills, welding rods, oxygen, acetylene gas, blending paint, solder, flux, rubber insulating tape, plastic insulating tape, black tape and so on.
7. Metal expansion bolts: according to the allowable tensile and shear forces and the installation of equipment to determine the diameter of the hole.
8. Terminal: According to the cross-section of the wire and the number of wires to choose the appropriate specifications of the terminal.
9. Galvanized materials: steel plate, round steel, flat steel, angle steel, bolts, nuts, screws, washers, spring washers and other metal materials, should be galvanized products.
(C) the main machinery
1. Live wrenches, vise, sander, hacksaw, saws, welding machine, lassoing machine, manual simmering pipe, hydraulic simmering pipe, flat file, half-round file, pressure case, soldering iron, electric stove, tin pot, blowtorch, tin spoon and so on.
2. Megohmmeter, high stool and so on.
Second, the quality requirements
Quality requirements in line with the "Building Electrical Engineering Construction Quality Acceptance Code" (GB50303-20XX).
Third, the process
Determine the location of the cable tray? Fixed bracket? Bridge installation? Distribution box fixed
Fourth, the operation process
(a) Determine the location of the cable tray
1. Cable tray should be laid in a safe, dry, easy to operate the electrical shaft.
2. According to the location of the drawing design, calculate the space size whether to meet the requirements of the operating distance, especially in the shaft bridge, distribution box number is more, larger size, more piping, often difficult to arrange, so you must carefully check the size, if necessary, with the civil engineering with the corresponding changes.
3. Check whether the location of the hole reserved on the floor in the shaft is appropriate, not adapt to timely rest, chiseling, so that the upper and lower floors of the corresponding hole straight and not bad, pay attention not to affect the structure.
(B) fixed bracket
1. Fixed bridge bracket using 50?50?5 angle, the height of 1500-20XXmm from the ground, fixed with expansion bolts.
2. The lower part of the bridge is fixed with No.10 channel steel, the channel steel is not less than 50mm away from the wall edge, the seat is in the reserved hole of the floor, and the buried parts are welded and fixed in the hole or fixed with expansion bolts and the floor. In the channel steel fixed two 50?50?5 angle, used to connect directly with the bridge fixed.
3. There are embedded parts under the floor slab to fix the fire partition, and the upper support fire pillows.
4. Cable bracket should be good grounding throughout the length of the bracket and the wall of the pre-buried grounding embedded parts welded into one.
(C) bridge installation
1. Fixed between the bridge and the bracket using bolts.
2. The connection between the bridge and the steel pipe is fixed with a special nut, and there is a cross-earth line.
3. When the straight section of the steel cable tray more than 30m, there should be expansion joints, and its connection using expansion joint plate.
(D) cable laying
1. In the bridge in place, you can lay the cable. In accordance with the design requirements, will need to be laid in the bridge in the cable in order to place, the arrangement should be neat, try to avoid cross. Laying should be fixed according to the appropriate spacing, and timely installation of signage. Cable terminals, shafts should be installed at both ends of the signage. Signage should indicate the line number, no number, write the cable type, specifications and the beginning and end of the place, the handwriting should be clear, not easy to fall off, the specifications should be uniform, can be corrosion-resistant, hanging should be firmly installed. Cable in the terminal head and joints to leave a spare length.
2. Cable into the shaft, tray cabinet and wear into the tube, the entrance and exit should be closed, the mouth should be sealed. Laying in the shaft with hemp protection layer of the cable, should be stripped of hemp protection layer, and its armor to be anticorrosive.
3. cable through the shaft, with fire pillows for dense sealing. The use of structural construction during the floor ground pre-embedded embedded parts, to fix the fire partition, fire partition using 4mm thick steel plate. There are three types of fireproof pillows, including 320?120?25 for Type I, 160?120?25 for Type II, and 160?75?25 for Type III, and the fireproof pillow type is selected according to the size of the reserved opening and the size of the bridge. When placing fire pillows on the fire partition, they should be placed neatly in order, next to the cable, so that the gap between the fire pillows and cables shall not be greater than 1cm, and the thickness of the fire pillows shall not be less than 24cm.
4. The blocking parts should be cleaned up before construction.
(E) distribution box fixed
1. Expansion bolts are used to fix the open distribution box. According to the design drawings, determine the elevation and axis of the distribution box. First according to the decoration +0.5m line set out the bottom line of the distribution box, and then according to the dimensions of the distribution box to determine the location of the installation holes, and drill holes in the fixed points with an impact drill. Before drilling, the diameter of the expansion bolts should be selected according to the diameter of the installation holes, and then select the corresponding diameter of the impact drill bit, and the diameter of the impact drill bit can be selected with the same diameter of the expansion bolts or slightly larger than the diameter of the first one.
2. Distribution box should be obvious and reliable grounding, with appliances of the iron plate and the door with appliances, there should be obvious and reliable bare copper braided wire for grounding protection line. Distribution box PE line shall not be connected.
3. and distribution box connected to the open piping fixed with a pipe card, and 200mm from the ground should have a fixed point, 200mm from the box should also have a fixed point, the pipe card should be matched with the diameter of the pipe.
4. Distribution box on the electrical appliances, meters should be firm, square, neat, evenly spaced, no loose steel terminals, open and close the flexible, complete parts.
5. The installation of distribution box should be firm and level, and the permissible deviation of verticality is 3mm.
V. Safety precautions
1. When the cable tray is installed, there should not be people staying underneath it. Entering the site should wear a helmet.
2. Use of electrical equipment, power tools to have reliable protection of grounding (zero) measures. When drilling, wear protective glasses, and no one shall stand under the workplace.
Cable Bridge Installation Construction Program 3
1 Construction Preparation
1.1 Technical Preparation
(1) Design and construction drawings and cable bridge processing drawings are complete.
(2) a variety of cable tray technical documents are complete.
(3) cable tray installation parts of the building decoration works are completed, heating and ventilation works are installed.
(4) The location and size of the holes reserved for civil construction should be in accordance with the design and construction specifications.
1.2 Material Preparation
(1) cable tray and its accessories: should be used after hot-dip galvanizing treatment of flame retardant, fire-resistant and common stereotypes of the product. Its type and specification should meet the design requirements. Cable tray inside and outside should be smooth and flat, no pricks, there should be no distortion, warping and other deformation phenomena.
(2) metal expansion bolts: should be selected according to the allowable tension and shear force.
(3) Galvanized materials: steel plate, round steel, flat steel, angle steel, bolts, nuts, screws, washers, spring washers and other metal materials used to make electrical workpieces should be galvanized.
(4) auxiliary materials: drills, welding rods, oxygen, acetylene gas, blending paint, solder, flux, rubber insulation tape, plastic insulation tape, black tape, etc..
1.3 Preparation of the main machine
(1) pencil, tape measure, wire drop, thick wire bag, tin pot, blowtorch.
(2) electrician's tools, hand drill, impact drill, megohmmeter, multimeter, tool bag, tool box, high stool, etc..
1.4 Work environment preparation
(1) with the civil construction of the structure of the construction, reserved holes, pre-embedded iron and pre-embedded boom, hangers and so on all completed.
(2) The first side of the roof and wall grouting is all completed before cable tray laying.
(3) The civil engineering wet work in the shaft of the high-rise building is all completed.
(4) Ground cable tray should be timely with civil construction.
1.5 Construction Preparation
(1) Participating construction personnel must hold the electrician's certificate of operation, before entering the site by the electrical professional and technical personnel for technical training. The construction team should be equipped with electrical tools, commonly used tools by the electrician to keep their own use, special large-scale equipment by the team to keep.
(2) on-site processing shall set up a special bench, plus protection fence. Work should be equipped with electrical firefighting equipment.
(3) The work team should be clearly divided, the establishment of job responsibility system, improve? Specialization? Construction level.
(4) Construction technical information should be synchronized with the construction progress.
2 Construction Deployment
The cable bridge of the main building and the west sub-building is installed by the first team of Shandong Hydropower, and the cable bridge of the east sub-building is installed by the second team of Shandong Hydropower.
3 operation process
3.1 process: pre-drilling holes pre-buried boom hanger bouncing line positioning metal expansion bolts fixed boom, hanger installation bridge installation ground cable bridge installation.