[China Aluminum Network] An engineering design

1. The engineering design must be calculated and tested for strength design. The production, installation, and acceptance are only based on the standard atlas and the type inspection report provided by the profile manufacturer. This is an erroneous and even dangerous behavior. Because the standard atlas is only a partial diagram of a certain series of windows, it does not indicate the load that the construction can bear according to the diagram, so it cannot be used as a basis for production, installation, and acceptance. For different series of doors and windows, the strength or deflection check or test must be carried out according to the principle of less stress.

2. The strength and rigidity of landing doors and windows are generally insufficient, and the main force columns (beams) must be strengthened.

3. When the height of doors and windows of high-rise buildings is more than 30m, gb511057 “Lightning Protection Design Code for Buildings” shall be implemented.

Second material selection

1. Aluminum alloy profiles must meet the requirements of gb/t5237-2400 Aluminum Alloy Building Profiles.

2. The selection and configuration of hardware accessories is one of the important factors to ensure the quality of doors and windows. Even a window with excellent performance must be guaranteed by the selection and configuration of high-quality accessories.

3. The pulleys, tops, anti-shedding sealers, and lower seals that push and pull doors and windows are accessories that ensure the quality of sliding doors and windows. The pulley is the key to the smooth opening and closing of doors and windows. The roller axis nylon wheel should be used. The anti-shedding sealer is a safety measure to prevent the detachment of the window sashes, and at the same time, it has both the sealing function and the sealing function between the upper slides. The abs plastic and the EPDM rubber should be used with good durability. The lower sealing block plays a sealing role between the hooking rate and the glide path, and can effectively prevent the splashing phenomenon under the effect of the fluctuating load. The EPDM rubber should be used. Tops are the seals of window sashes and window frames, which determine the airtightness of doors and windows. Common chemical fiber slivers will curl and lose their sealing effect. Silicone tops must be used.

4. The hinges (or friction hinges) of sliding doors and windows, the handles, and the sealing strips between the frames are the accessories that guarantee the quality of the hinged doors and windows. The bearing capacity of the hinge (or friction hinge of the sliding window) is the key to the safety of the doors and windows and the smoothness of the opening and closing. The bearing capacity of the hinge is stronger than that of the friction hinge, so the hinge can make a larger window sash For use, friction hinges are only suitable for smaller windows or top-hung windows. Handle important accessories related to safety and sealing performance of doors and windows, ordinary handles are only applicable to sashes with smaller grids and loads, European multi-point handles are suitable for sashes with large grids and loads. Use; The sealing strip between the framed fan is the guarantee of the air tightness and watertightness of the flat open door and window, and the effective sealing ratio of the original pvc plastic strip is about 5 years. The recycled pvc tape does not have sealing effectiveness, and it is desirable to use a weather resistant rubber such as EPDM.

5. The type, specification and performance of hardware accessories shall comply with the relevant provisions of the current national standards.

6. Structural adhesives and weather-resistant adhesives used for hidden frames should be tested for compatibility with profiles and glass prior to use.

Three processing production

1. The processing of aluminum doors and windows should be carried out in the factory and must not be made on the construction site.

2. The drainage hole on the sliding window chute shall follow the principle of the inner and outer fan inner holes to ensure the sealing performance of the doors and windows, especially the horizontal sliding door of the horizontal top bar.

3. Before the assembly of aluminum doors and windows, the processing burrs at the end should be removed, and the end nodes and the joints of the profiles must be sealed with waterproof glue to prevent the structure from seepage.

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