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The two sides of the composite wallboard are composed of a waterproof medium-density reinforced fiber cement slab and a lightweight aggregate concrete core. It has the characteristics of light weight, solid, thin body, high strength, sound insulation, heat insulation, waterproof, fireproof, moisture-proof, antifreeze, aging resistance, strong hanging weight, impact resistance, etc.; at the same time, it has good decorative properties, which can be nailed, sawn, and Environmental pollution, direct slotting and burying of line pipes, simple construction, etc.; can reduce the amount of wall finishing works and shorten the wall construction period; increase the practical space of the building, reduce the load of the main structure, reduce the investment and decrease of structural engineering Comprehensive cost. It can be widely used in non-load-bearing partition walls of various constructions.

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Construction procedures for wall panels  

Board layout planning→measurement and line-layout→construction preparation→wall purlin and connector device→wall panel device→door window trim→completion inspection.

 

Understand the inspection of construction drawings and engineering planning materials, planning basis, construction inspection standards and related skills rules. In order to ensure the smooth construction according to the requirements of the planning drawings, professional planners, project management personnel, skilled personnel, and skilled workers among the skilled workers shall fully understand and grasp the planning purpose of the planning drawings, the characteristics of the structure and the structure, and the status of the skills requirements for scheduling. plate. The plan plan deepening plan should be improved on the basis of maintaining the original planning purpose. During the construction planning process, actively communicate and communicate with the owner, construction planner, supervisor and other related units to ensure the efficient development of the planning work .

 

Measure and release line 

1. According to the elevation and related drawings, the large-scale drawing of the wall grid and the elevation point and the axis orientation given by the civil engineering unit, choose the measuring tools such as wire hammer and steel wire to determine the exterior wall plane, door and window columns, and grid on the main body. Equivalent to the baseline; and use theodolite for adjustment and re-measurement.

 

2. The wall grid line should be matched with the main structure measurement line. The level elevation should be drawn from the ground layer by layer to avoid the accumulation of errors. When the error is greater than the rule's agreed deviation, it should be adjusted appropriately to make it fit the external wall. Structural requirements.

 

3. The quality inspection personnel should check the measuring and laying-out status in time, and make a record of the inspection status. 

 

4. The quality inspection personnel shall conduct sampling inspections on the deviation status of the embedded parts. The sampling amount shall be more than 5% and not less than 5 of the total number of embedded parts on the external wall, and the number of unqualified test points shall not exceed 5%. Can be considered qualified.

 

On-site construction preparation  

The on-site project department carefully prepares the construction work before the construction, such as understanding the wall structure and planning drawings, etc., and the specific content of the construction preparation work.

 

1. Carry out comprehensive skills, quality and safety education for on-site management and installation personnel. 

 

2. The components on the scene should be stacked on special shelves or skids according to their varieties, standards and numbers.

 

3. When the components are transported and hoisted, the maintenance work should be strengthened, and there should be no collision and damage; the components should be placed in a ventilated and boring place, and rain-proof methods should be provided.

 

4. The components should be inspected and proofread before installation: the components should conform to the requirements of the planning drawings and related quality standards, and there should be no deformation, damage or pollution. Unqualified components should be removed from the field and not installed on the wall.   

 

Wall purlin or wall beam device 

1. According to the requirements of the bidding documents, the external wall panel is a horizontal panel, the wall purlin is a vertical member, and the wall beam is a horizontal member. The wall purlin and the connection between the wall beam and the column shall meet the requirements.

 

2. The installation must be carried out after the completion of the civil work, from bottom to top; after the installation is completed, inspection, adjustment, proofreading, and fixing should be carried out to make it meet the quality requirements. 

 

3. After the purlin and wall beam device are positioned, self-inspection should be carried out; the unqualified ones should be adjusted and corrected in time. After the self-inspection is qualified, they should be reported to the quality inspector for random inspection. The sampling amount should be more than 5% of the total quantity and No less than 5 pieces, and the number of unqualified inspection points shall not exceed 10%; the next process can only be carried out after the random inspection is qualified.

 

Wall sandwich panel device 

1. Material appearance  

 

The engineering materials on site should be accompanied by the original factory raw materials inspection verification and related test reports. On-site inspection of the standards, dimensions, thickness and accessories of boards, purlins and various edge finishing materials. 

 

The appearance of the wallboard shall be free of scars, stains, distortions, pollution, chromatic aberrations, and angles. When the materials are out of the field, they should be stacked in the area designated by Party A, and certain safety measures should be adopted. The materials should be properly packaged to avoid damage. 

 

2. Wallboard installation 

 

According to the scale on the planking diagram, install the wallboard to the corresponding position, and pay attention to the installation sequence and orientation of the edge during the installation process. The order of the devices should be from bottom to top, and the overlap of the plates should be even.

 

(1) Installation process 

 

The first step of the list: Place the profiled steel plate to be installed in a clean place, drill small holes in the plate according to the direction of the wall beam, one for each rib. 

 

Step 2: Place the profiled steel plate with the drilled small holes facing outwards, and place it on the place where the device is needed, align it with the reference position, and then fix it with self-tapping screws. 

 

Step 3: Place the second plate with small holes on the top plate accurately, press it tightly with the top plate, and fix it with self-tapping screws. 

 

Step 4: Check the parallelism and straightness of the profiled steel plate at any time. If it is found that it is not straight, it should be adjusted in time. 

 

Step 5: Install self-tapping screws at the overlap according to the specific conditions. 

 

(2) The vertical lap method of vertical lap wall panels is similar to that of roof panels. When the device is installed, the upper board is overlapped on the outside, and the lower board is overlapped on the inside. The overlap length is 150mm. Construction should be carried out in accordance with planning requirements.

 

3. Special treatment of wall corners 

 

The joint treatment of the color steel plates in the corners of the horizontal panels of the external wall panels can be processed by the method of bending the whole wall panels. The joints of the conventionally planned corners are set within the range of 300~500mm from the corners. The advantage of this setting is to avoid the danger of cracks and water seepage at the joints at the corners. The cover or cracks of the corner joints will also affect the beauty. The corners of the whole slabs are more regular and beautiful in appearance. 

 

4. Product maintenance and cleaning 

 

During the construction process, appropriate maintenance methods should be selected for the exterior wall panels to prevent collisions, pollution, deformation and other phenomena. External wall panels and external wall panel components that have been contaminated and adherents during the construction of other projects shall be promptly removed to restore their original state.   

 

quality inspection 

1. After the external wall panel installation is completed, the quality inspector should conduct inspections in time. If the unqualified parts are found, they should promptly notify the construction personnel and urge rectification. If there is a large unqualified item or cannot be rectified, they should promptly report to the relevant department.

 

2. The inspection results should be recorded in time while the external wallboard is inspected, and all inspection records, evaluation tables and other materials should be archived. 

 

3. Only after passing the inspection can it be submitted to the on-site supervisor and the owner for inspection.