Requesting Beijing aluminum veneer construction plan

Construction plan of aluminum plate

Section 1 Description

1. This project is an exterior facade aluminum plate curtain wall decoration project

2. Panel: 2mm aluminum veneer

3. Support keel: 8mm steel plate

4. Column (main keel): 80*80 galvanized square tube, horizontal material 75*6 angle steel

5. The construction specifications referred to in this project:

5.1. Building and structural design specifications:

1) "Building Structure Load Code" GB50009-2001

2) "Steel Structure Design Code" GBJ17

3) " "Code for Seismic Design of Buildings" GB50011-2001

4) "Code for Design of Lightning Protection of Buildings" GB50057-94

5.2. Material standards:

1) "Aluminum Alloy Building Profiles" GB/G5237-2000

2) "Aluminum and Aluminum Alloy Rolled Plates" GB3380-1997

3) "General Specifications for Anodizing and Anodic Oxidation Films of Aluminum and Aluminum Alloys" GB8013-87

4) "Carbon Structural Steel" GB700-88

5) "Low Alloy high-strength structural steel》 GB/T1597-94

5.3. Performance monitoring methods:

1) "Monitoring Method for Air Permeability Performance of Building Partition Walls" GB/T15226

2) "Monitoring Method for Wind Pressure Deformation Performance of Building Partition Walls" GB/T15227

3) "Monitoring Method for Rainwater Penetration Performance of Building Partition Walls" GB/T15228

4) "Physical Performance Classification of Building Partition Walls" GB/T15225-94

5.4. Technical Specifications for Curtain Wall Engineering:

1) "Architectural Curtain Wall" JG3035-96

2) "Technical Specifications for Metal and Stone Partition Wall Engineering" JGJ133-2001

3) "Code for Construction and Acceptance of Steel Structures" GB50205-2001

4) "Uniform Standards for Quality Acceptance of Construction Projects" GB50300-2001

5) "Quality Acceptance of Building Decoration Projects" Specification" GB50210-2001

Section 2 Labor Configuration

Due to the complex construction site, tight construction period and high construction quality requirements of this renovation project, in order to successfully complete the construction of this project, we The company selects construction personnel according to the following principles;

1. Only personnel who have participated in the construction of similar projects can have an understanding of its internal structure, system characteristics, and installation technical requirements. Therefore, the management personnel The requirements are high. Not only must you have a theoretical foundation in related majors, but you must also have practical work experience in similar systems engineering.

2. Select skilled workers who have participated in at least two installation projects to participate in the construction of this project to ensure the smooth progress of this project.

3. The construction progress, quality and safety of a project are not only related to the professional quality of the management personnel and construction personnel involved in the construction, but also have a great relationship with the sense of responsibility of the construction personnel. , Therefore, our company selected management personnel and construction personnel who have performed well in other projects and have a strong sense of responsibility to participate in the construction of this project.

Section 3 Aluminum Plate Installation and Construction Plan

1. Construction sequence:

According to the project process requirements, the construction sequence of this project is:

On-site cleaning - measuring and setting out - keel positioning - installation of post-embedded parts - aluminum plate keel installation - aluminum plate panel installation - fluorocarbon spraying

2. Construction method:

2.1． On-site cleaning

Carry out site cleaning of garbage according to the actual conditions of the site, check construction conditions, prepare construction tools, and prepare for construction.

2.2. Measurement and setting out

According to the large-scale drawing of the aluminum curtain wall and the elevation control points, entrance and exit lines and axis positions, use measuring tools such as weights, steel wires, measuring instruments and levels to measure the main structure. Curtain wall planes, columns, grids and corner baselines were adjusted and retested using theodolite.

2.3. Keel positioning

According to the drawings, elevation control points, and keel layout provided by the relevant design unit, use measuring tools such as weights, steel wires, measuring instruments, and levels to position the keels on the walls of the main structure. And use theodolite for adjustment and re-measurement.

2.4． Install rear-mounted embedded parts

This project is a renovation project. The embedded parts are installed with chemical expansion bolts. The fixed installation of embedded parts with chemical expansion bolts must be carried out according to the following steps:

1) Buried Before installing the parts, dig a 350*300 hole on the insulation layer of the original main structure. After the installation of the rear embedded parts is completed, apply waterproof coating to the rear embedded panels for waterproofing treatment (the insulation material will not be repaired)

3) Select post-supplement chemical expansion bolts: According to the design drawing requirements, select M12 post-supplement chemical expansion bolts

4) Drilling: According to the chemical expansion bolt specifications, select the corresponding drill bit and check the drill bit diameter.

When drilling holes, the expansion bolt drilling process must be strictly followed. After drilling, the drilling depth and verticality must be checked. The minimum spacing between adjacent chemical expansion bolts must comply with national specifications.

5) Clean the holes: After drilling, use air blowing to clean the holes, and the blowing and brushing should be thorough.

6) Implantation of chemical adhesive: After cleaning, implant a tube of chemical adhesive into each hole. Before implantation, construction personnel must check the packaging of each chemical adhesive to ensure that the packaging of each chemical adhesive is not damaged and that there is not a small amount of adhesive. Implantation of half packs of chemical adhesives is strictly prohibited.

7) Implanting threaded anchors: Use an electric drill to screw into the drill hole. When implanting, construction workers must pay attention to their own protection and wear goggles before proceeding.

8) All anchors are chemical anchors and are all galvanized. Waterproof requirements have been met.

9) The pull-out test requires the tensile strength of the anchor to reach 7.5KN.

2.5． Aluminum plate keel installation

1) Pre-install the steel supports before installing the steel keels. The steel supports are connected with 8mm steel plates. The pre-assembly and welding work of the steel supports starts from the bottom of the curtain wall project and is installed upward. The steel supports are connected with The rear embedded parts and keels are fully welded.

Start from the bottom of the aluminum curtain wall and install it upwards. You can start installing the keel after the steel supports are installed and corrected.

2) The installation of curtain wall columns should meet the following requirements:

a. The column should be connected to the connecting piece first, and then the connecting piece should be connected to the main embedded part and should be adjusted and fixed. The installation elevation deviation of the column should not be greater than 3mm, the front-to-back deviation of the axis should not be greater than 2mm, and the left-right deviation should not be greater than 3mm.

b. The installation elevation deviation of two adjacent columns should not be greater than 3mm, the front-to-back deviation of the axis should not be greater than 2mm, and the left-right deviation should not be greater than 5mm; the distance deviation of two adjacent columns should not be greater than 2mm.

3) The installation of aluminum plate beams should meet the following requirements:

a. The connectors at both ends of the beam should be installed at the predetermined position of the column and should be installed firmly.

b. The horizontal elevation deviation of two adjacent beams should not be greater than 1mm.

4) The light distribution of the aluminum panel curtain wall is proposed and constructed by a professional lighting decoration company. We cooperate with lighting companies.

2.6． Aluminum panel installation

1) Construction method: When installing on the construction site, you should first check the drawing number and panel number to confirm its installation location. Installation instructions are carried out on external scaffolding. After adjusting the gap, level and verticality, fix the upper, lower, left and right hems of the panel assembly.

2) Fix the aluminum plate: Use 10*6 aluminum machine-made flat-head screws on the side to fix the folding edge of the panel on the 80*80*5 column, and use L10*6*2mm full-length aluminum strips on the upper and lower sides to fix the folding edge. And use 10*6 aluminum machine-made flat head screws to fix it on the horizontal keel.

3) The allowable deviations of aluminum plate curtain wall construction technology and installation are as follows:

Item Allowable deviation mm Inspection method

Vertical joints and wall verticality Aluminum plate height m 10 Use a laser or theodolite

lt; 30

gt; 30, lt; 60 15

gt; 60, lt; 90 20

gt; 90 25

Aluminum plate flatness 2.5 Use 2m ruler and steel ruler

Vertical joint straightness 2.5 Use 2m ruler and steel ruler

Transverse joint straightness 2.5 Use 2m ruler and steel ruler

Joint width (compared with design value) ±2 Use caliper

Joint height difference between two adjacent panels 1.0 Use depth Ruler

2.7． Fluorocarbon spraying

1) The coating project of the steel structure with supports and aluminum plate curtain walls with upper and lower openings should be carried out after the component production quality has been inspected and qualified.

2) Supports and upper and lower closing steel structures of aluminum plate curtain walls The surface of the components should be treated before structural painting. The surface treatment method of the components in this design is manual rust removal. The quality level of rust removal should not be lower than lt; lt; the corrosion grade and rust removal grade of the steel surface before painting; gt; (GB8923 -Sa2.0 level specified in -88).

3) The anti-corrosion coating method for steel structural components with upper and lower closures on supports and aluminum curtain walls: two coats of epoxy zinc-rich primer and two coats of topcoat.

Section 4 Project Construction Progress Plan

1. See the construction schedule for details.

Section 5 Measures for safe production and civilized construction

Safe and civilized construction is a major matter related to the lives of all construction workers, and is also the key to the success or failure of an enterprise and project. It has the same important status as quality and must be taken seriously.

Safe construction and civilized construction complement each other and are inseparable. Safe construction is the prerequisite for civilized construction, and civilized construction is the guarantee of safe construction. Therefore, when our company implements specific measures, we put the two at the same level and consider them as a whole.

1. Safety management:

1. Establish a leading group for civilized construction and safety production management from the company, branches to construction projects, and establish a safety management guarantee system. The project department has a full-time safety officer; the team has a part-time safety officer.

2. Establish a safety production responsibility system with clear responsibilities. And install it in a frame and hang it in a conspicuous place in the office. The company and the project, as well as the project and the team, have a safety production agreement with clear responsibilities, and the responsibilities are assigned to each person.

3. The construction project department formulates a safety education system. Aim to provide three-level education to all new workers, with the education time being no less than 50 hours and the education rate reaching 100. You will be employed after passing the examination. When changing types of work, education for changing types of work should be carried out, and employees will be employed after passing the examination.

4. Conduct detailed safety technical briefings for each type of work and department. The briefings are recorded and signed by the person being briefed.

5. All special types of work must be certified with certificates. Certificate holding rate is 100.

6. The construction project department formulates a safety inspection system. Safety inspections are carried out on site. The construction project department conducts safety inspections once a week, the branches conduct monthly inspections, and the company conducts major inspections every quarter. At the same time, irregular, seasonal and special safety inspections will be carried out for different parts of the construction, different climates, before and after the holidays. Identify the person, time, and measures to rectify the problems that exist during the inspection, review them within the prescribed time, and keep records at the same time.

7. The team establishes a team installation activity system and keeps written records. The team conducts safety inspections every day, and handover safety inspections are conducted when the type of work is handed over. The team should conduct safety inspections on the tools when using them and eliminate hidden dangers in a timely manner.

8. The construction project department formulates a "construction site safety management system", "construction site safety reward and punishment system" and "safety discipline". Comply with the "six major disciplines and ten no-no's" for production safety, and violators will be severely dealt with in accordance with regulations.

9. Strive to ensure that no major or minor casualties occur during the project. If an accident occurs, report it to the relevant departments in a timely manner, protect the scene, rescue the injured, and keep records. And the accident will be dealt with seriously according to the principle of "four no-misses".

10. Set up 10 sets of safety signs at the construction site. Safety slogans are written in large letters on the walls. As the construction level increases, large-character safety slogans are hung on every other floor to increase the atmosphere of safe production and civilized construction. One picture and nine tiles are set up on site. According to the requirements of the company's corporate standards, a professional ethics code sign and a company quality policy target sign are added.

11. The construction project department establishes a safety production meeting system. Basically, the upper department holds a production safety meeting every half month, with all employees participating and minutes of the meeting kept. During the meeting, we learned relevant laws and requirements on production safety, relevant rules and regulations, and operating procedures for various types of work, so that everyone can truly understand the importance of production safety and the necessity of doing a good job in production safety.

2. External scaffolding

1. Use floor-standing external scaffolding, made of steel pipes with an outer diameter of φ48*3.5mm. There is an approved special plan for the erection of external scaffolding. Operators must hold certificates to work and will be used after passing the inspection.

2. Set up external scaffolding according to the height of the building and the top of the external frame 1.3 meters higher than the building according to the specification requirements. Mixing of steel and bamboo is strictly prohibited. Strictly control the quality of materials.

3. The foundation of the outer scaffolding poles should be compacted, and the lines should be laid out first according to the on-site plane dimensions. Pole spacing: 1.2 meters horizontally and 1.5 meters vertically. Use two rolling heads for anchoring, and use rolling heads that meet the requirements to connect the steel pipes. The outer frame is 0.2 meters away from the wall. Rigid tie points are set up every 4.5 meters horizontally, and the tie points are misaligned up and down. The scaffolding boards are 1 meter × 1.5 meters and are laid layer by layer starting from the second step. From the second step, the outer frame is fully enclosed with standard dense mesh. The overlap length is greater than 0.4 meters. It is anchored with two rolling heads at an angle of 45°-60°, continuous and smooth up and down. Lightning protection is provided at the four corners of the top of the outer frame. Device. A good grounding device is installed at the bottom, and the grounding resistance is not greater than 4 ohms.

4. The general requirements for the erection of the external frame are horizontal and vertical, firm connections, solid feet, layer drag, complete and firm facilities, no deformation, no shaking. The vertical deviation of the frame should not be greater than H/200. And no larger than 10 cm, the load capacity does not exceed 270kg/m2. Set up a zigzag ramp at an appropriate position at the corner of the outer frame, with a slope of no more than 1/3, and anti-slip strips with a spacing of 30 cm for professionals to use.

5. Construction should be carried out strictly according to the construction plan. Strict quality inspection is carried out on raw materials, especially fasteners. All embedded parts connected to the structure must be firmly embedded and positioned correctly. During construction, check whether fasteners are missing or damaged at any time. It is strictly prohibited to remove fasteners at will during the construction process. Strictly control the construction accumulation level and the accumulation load per unit area. If instability or looseness is found during inspection, the site must be reinforced immediately.

3. "Three Treasures and Four Mouths" Protection

1. When entering the construction site, you must wear a safety helmet and fasten the buckle. One helmet per person. Safety helmets are worn according to the color of the type of work. OK, 15 spare safety helmets for the office.

2. Safety belts must be fastened when working at high altitudes, and 4 pairs of safety belts are prepared on site.

3. The derrick is surrounded by safety nets on three sides, and the outer frame is tensioned and fully enclosed dense mesh safety nets.

4. According to the requirements of "four sides" edge protection for high-altitude operations, three upper, middle and lower protective poles are used for different situations of the "four sides". The height of the protective railings is 1.2 meters above the ground for the upper road, 0.7 meters above the ground for the middle road, and 0.3 meters above the ground for the bottom road. Scaffolding boards are installed vertically. Strict sealing measures are adopted for the reserved holes. Protective sheds are erected at the entrances of the passages. , the width of the shed is larger than the entrance of the passage, the height of the protective shed is more than 3 meters, and the front and two sides are folded upward by 1 meter.

IV. Construction electricity consumption

1. According to the Ministry of Construction’s temporary electricity use specifications, a special plan for construction electricity consumption will be implemented after approval.

The site is equipped with a three-phase five-wire system, using cables, and the wire diameter is specially designed and calculated based on the amount of electricity consumed. And separate the installation according to the electricity consumption. Achieve one machine, one gate protection, three-level power distribution, and three-level protection. All distribution boxes are safety electrical boxes. The electric box wires must be put in and out with protective sleeves. The operating current of the main distribution box, distribution box and switch box meets the specification requirements. Power and lighting circuits are separated. Connect the three-phase five-wire protective neutral line to each mechanical equipment.

2. Two-phase cables for lighting are fixed with insulators, and protective sleeves are used to pass the wires through the wall. The wire diameter is determined based on the calculation of electricity consumption. Fluorescent lamps are used for indoor lighting and iodine tungsten lamps are used for on-site lighting. It is strictly prohibited to use metal iodine tungsten lamp brackets. The electric box fuse shall use fuse wires that match the electrical load of the construction. Copper wires are strictly prohibited. All distribution boxes at the construction site are equipped with leakage protectors that meet the requirements. Separate power and lighting circuits. Distribution boxes should be installed on each construction floor.

3. The power distribution system is set up according to the main distribution (level one) → distribution power (level two) → switch box (level three or final level), and implements two-level leakage protection. The final box is set according to the requirements of one machine, one gate, one leakage and one box. The parameters of the gate and fuse match the equipment container. The specifications of the electric shock protector of the switch box are matched with the construction machinery and tools. Generally, the machinery and tools first use an electric shock action of ≤30mA. Current, when inserted into vibrators or plate vibrators, submersible pumps, terrazzo machines and various handheld electric tools, etc., the electric shock action current is ≤15mA, and the rated leakage action time is less than 0.1S. A power isolating switch is installed inside the box.

3.1 The distribution box must be leak-proof, with complete door locks, spray-painted boxes with relevant signs, unified numbering of boxes at all levels, marking of circuits in the box according to purpose, and posting of electrical circuit diagrams and Check the maintenance record sheet.

3.2 Use sleeves for the introduction and exit of the distribution box. Ensure that the incoming and outgoing wires are neat and enter from the bottom of the box. Avoid using wires with poor insulation, aging and broken skin.

3.3 Provide lightning protection grounding for steel pipe scaffolding, gantry frames, tower cranes, etc. and zero connection protection for equipment, and perform grounding resistance value testing.

3.4 Hand-held lighting fixtures, lighting in wet places and metal containers all use 36V safety voltage. The metal shell of the lighting fixture is protected from zero connection, and the special lighting circuit is equipped with leakage protection.

3.5 The distance between outdoor lighting fixtures and the ground shall not be less than 3m, and the distance between indoor lighting fixtures and fixtures shall not be less than 2.4m.

5. Construction Machinery

There is a maintenance and repair system for mechanical equipment on site. Equipped with full-time mechanical management personnel. All mechanical equipment achieves three-level power distribution and three-level protection, with one machine, one gate and one protection. The main equipment is operated by dedicated personnel, and the operators are certified.

The equipment should be managed uniformly by the mechanical administrator, and any faults should be repaired in a timely manner. Perform diligent maintenance on mechanical equipment. Be clean, clean, the machinery is in good condition, and the protective facilities are complete.

Manage gas welding bottles and store them separately. During operation, the gas bottles and the acetylene generator should be more than 5 meters apart and more than 10 meters away from the welding points. Work with a certificate.

6. Safety construction measures

1. General regulations

1.1. The company has safety officers at the construction site who are responsible for implementing the rules and regulations related to production safety, and doing a good job in publicity and education on safe construction for on-site construction personnel, so that all construction personnel can truly understand the importance of safety. When entering the construction site, they must abide by the "Technical Regulations for Construction and Installation Workers" , Consciously abide by various safety regulations and safety rules and regulations.

1.2. Special projects (electricians, welders) must have professional certificates approved at the municipal level or above. On-site electric wires are erected in accordance with regulations, and insulated rubber wires must be sleeved when passing through the road to avoid fracturing and electric shock.

1.3. To give full play to the role of the "three treasures", you must wear a safety helmet and safety belt before entering the site, and use personal labor protection equipment correctly. Always check and pay attention to the items on the lower floor. If there are no safety facilities for work at heights above 2m, you must fasten your seat belts and fasten the safety hooks to ensure the safety of personnel. Pass on stairs and front desks without handrails or simple handrails. When working at high altitude, you should first test its firmness and pass on the side close to the wall. More than 2 people must coordinate and cooperate with each other before operating. It is strictly forbidden to throw materials, tools and other objects when working at heights.

The gondola used for installation should be set up in accordance with regulations.

1.4. During construction and installation, no illegal operations are allowed. In case of special circumstances, construction can only be carried out after seeking permission from the leaders of the relevant departments. The stacking and lifting of materials must obey the unified command of the owner and the civil construction unit; safety facilities and safety devices must not be dismantled without the approval of relevant personnel.

1.6. All construction workers are required to undergo a physical examination and can only participate in work after passing the examination. Drinking and fighting are strictly prohibited at work. Before using a tool, check whether its safety performance is intact. Tools that do not meet the intact standards are strictly prohibited from use.

1.7. Establish a full-time safety officer on the construction site to be responsible for safety issues, solve problems immediately and report them in a timely manner. During on-site construction, relevant national fire prevention regulations should be strictly followed.

1.8. All kinds of electric mechanical equipment must have leakage protection devices and reliable and safe grounding before they can be started and used; when work is completed, the power supply must be cut off, and the construction site must be inspected to eliminate hidden dangers.

1.9． It is not allowed to wear slippers, high heels, bare feet or shirtless to enter the construction site; it is not allowed to wear hard-soled shoes for climbing operations.

2. Construction safety measures in rainy season and typhoon season

If there is thunder or rainy season before construction, preventive measures must be taken to ensure the quality and safety of the project:

2.1． Listen to the weather forecast in advance and prepare for rain in advance;

2.2. No outdoor operations are allowed during heavy rain or rainstorm;

2.3. On light rainy days, in order to ensure the quality of gluing, no gluing construction is allowed. Other installation work can only be carried out after approval and when safety is ensured.

2.4. In typhoon weather, arrange a shutdown or take prescribed safety construction and reinforcement measures.

2.5. Finished and semi-finished products should be well protected. .

3. Fire prevention safety measures

The construction unit is required to establish a fire prevention leadership group represented by the project manager, implement a fire protection responsibility system, implement dedicated personnel to be responsible for daily fire prevention inspections, fire prevention supervision, etc., and organize personnel to conduct fire protection knowledge training, etc. . Conscientiously implement the work policy of “prevention first, combined with fire protection”. Based on the principle of self-prevention and self-rescue, strict and scientific management is implemented.

3.1． Strictly implement the national fire protection regulations for construction, implement the principle of prevention first, and equip fire extinguishers at the construction site and dormitories;

3.2. It is not allowed to burn debris and waste paper in open flames at the construction site;

3.3. Rice cookers, electric kettles, electric stoves, and electric heating cups are not allowed to be used in dormitories, warehouses, and offices. On-site drinking water will be provided by the company;

3.4. Smoking is prohibited at construction sites and offices, and smoking is strictly prohibited on beds in dormitories. Smokers should prepare an ashtray, and cigarette butts must be thrown into the ashtray;

3.5. It is not allowed to connect wires indiscriminately in the dormitory, and it is not allowed to use other metal wires instead of fuses. It is strictly forbidden to use mosquito coils in the dormitory;

3.6. Manage electrical equipment and wires well to eliminate fire hazards;

3.7. It is not allowed to use lamps above 60W for lighting in the dormitory. The height of the lamp from the ground shall not be less than 2.5m, and the distance from mosquito nets and other items shall not be less than 0.5m;

3.8. Fire is not allowed into warehouses and construction areas;

3.9. Electric welding and gas welding should strictly follow the operating procedures and implement the hot fire system, and then perform it under the supervision of a dedicated person. Electric welding is not allowed near flammable and explosive materials. Especially when welding steel supports, galvanized iron plates must be added at the bottom. Catch the welding slag to avoid overflowing welding flowers and ensure site safety;

3.10. When welding, great attention should be paid to possible fire hazards due to sparks splashing, and an iron baffle should be placed on the back of the welded component along the wind direction, with a welding slag hopper underneath.

3.11. Special types of work such as welders and electricians at the construction site must hold certificates to work.

3.12. The treatment of fireproof windows can be opened to meet the requirements after on-site testing.

3.13. If there is a fire seedling, the construction unit should be urged to take effective measures to put out the fire immediately.

If an accident occurs, rescue the scene promptly, protect the scene, and report to the relevant departments. In accordance with the principle of "three no-misses", assist in investigating the cause of the fire and make rectification suggestions and preventive measures

3.14. Set up a dangerous goods warehouse in strict accordance with the requirements for the storage of dangerous goods.

4. Lightning protection measures

4.1. The aluminum plate lightning protection system of this project is designed according to the "Lightning Protection Design Code for Buildings" GB50057-94. The partition wall is equipped with its own lightning protection system and is reliably connected to the lightning protection system of the structure. The overlap length is greater than 100mm and is double-sided welded. .

4.2. Lightning protection and voltage equalizing rings are arranged on every second floor. The pressure equalizing ring is reliably connected to the main steel bars of the civil construction concrete through steel angle codes and post-installation parts.

The lightning protection voltage equalizing ring is equipped with an independent lightning protection down conductor. The maximum distance is no more than 12m. The lightning protection down conductor is reliably connected to the corner code. The steel angle concrete and the aluminum alloy main gear are connected using stainless steel lightning protection contact pieces. .

4.3. The exterior decorative roof cover is used as a lightning arrester and the lightning arrester is reliably connected to the lightning down conductor.

4.4. The aluminum alloy down conductor and voltage equalizing ring are made of φ16 galvanized steel bars. If the length of the down conductor and voltage equalizing ring is not enough, welding is allowed. The overlap length is not less than 10d and double-sided welding is allowed.

4.5． When expansion joints or settlement joints appear in a building, the two parts should form a unified lightning protection system. When the lightning protection system is spanned, soft wires are generally used to connect the disconnected lightning protection devices.

4.6． The lightning protection system test ground resistance is not greater than 1Ω.

5. Civilized Construction Measures

For on-site construction, the following points must be achieved internally:

5.1. Carry out publicity and education on civilized construction for on-site construction personnel, and consciously abide by various safety regulations and safety rules and regulations. On-site construction personnel must dress uniformly to facilitate acceptance of supervision by owners, supervisors and general contractors;

5.2. Develop detailed operation instructions for each process on site, and organize relevant personnel to learn and understand;

5.3. Resolutely put an end to barbaric operations and strictly follow operating procedures and work instructions;

5.4. Construction workers are required to care for each other and help each other to create a good internal environment for efficient and high-quality completion of project construction.

5.5． Externally, we must obey the unified command and arrangements of the owner, supervisor and general contractor, and achieve mutual understanding and cooperation.

The following points must be achieved externally

① Establish an on-site domestic sewage discharge sedimentation tank to purify and reuse or discharge it rationally.

③ Garbage stations should be set up centrally in the construction site, and garbage on each floor, site, and surrounding areas should be cleaned up in a timely manner.

④ Paint the walls on both sides of the main passage entrance and write the name of the project and the names of the construction, supervision, construction and other units, and light the top of the wall.

⑤ The living area and production area should be properly greened and planted with lawns, flowers and trees.

⑥ The construction unit is required to reasonably arrange the construction flow section to reduce night construction. If necessary for craftsmanship, relevant procedures must also be completed and public notices must be posted to obtain public understanding.

⑦ Civilized construction should ensure that "dust does not fly, sewage does not flow out, strong light does not pollute, and noise does not make noise" to ensure the normal life of residents in neighboring communities.