Engineering design
1. The engineering design must be used for strength design calculation and testing. It is only made according to the standard atlas and the type test report provided by the profile manufacturer. It is wrong or even dangerous behavior. Because the standard atlas is only a large sample of a series of window types, it does not indicate the load that can be withstood according to the construction of the figure, so it cannot be used as the basis for production, installation and acceptance. For different series of doors and windows, the strength and deflection must be checked or tested according to the most unfavorable principle of the force state.
2. The strength and rigidity of the floor and window are generally insufficient, and the main force column (beam) should be strengthened.
3. When the height of the outer door and window of the high-rise building is >30M, it shall be implemented in accordance with GB511057 "Code for lightning protection design of buildings".
Two materials selection
1. The aluminum alloy profile 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 the high-performance window type must be guaranteed by the selection and configuration of high-quality accessories.
3. The pulleys, tops, anti-drop seals and lower seals of sliding doors and windows are the most important accessories to ensure the quality of sliding doors and windows. The pulley is the key to whether the door and window are open and closed smoothly. Rolling shaft nylon wheel should be used. The anti-drop sealer is a safety guarantee for preventing the sash from falling off and has a sealing function between the hook and the upper slide. ABS plastic and EPDM rubber should be used. The lower sealing block acts as a sealing between the hook and the glide path, and can effectively prevent the occurrence of splashing under the action of fluctuating loads. EPDM rubber should be used. The top is the seal of the window sash and the window frame, which determines the airtightness of the door and window. The common rayon will curl and lose the sealing effect when it meets the water. Siliconized tops must be used.
4. The hinge of the door and window (or the sliding hinge of the sliding window), the sealing strip between the handle and the frame fan are the most important accessories to ensure the quality of the sliding door and window. The bearing capacity of the hinge (or the friction hinge of the sliding window) is the key to the safety of the door and window and whether the opening and closing is smooth. The bearing capacity of the hinge is stronger than the friction hinge, so the hinge can make a larger sash. For use, the friction hinge is only suitable for smaller or upper hanging windows. The handle is related to the important parts of door and window safety and sealing performance. The common handle is only suitable for use on sashes with small division and load. European multi-point handle is suitable for sashes with large division and load. Use; the sealing strip between the frame fans is the guarantee of the airtightness and watertightness of the sliding door and window. The sealing of the original PVC strip is about 5 years. The recycled PVC strip does not have the effectiveness of sealing, and it is desirable to use a rubber having good weather resistance such as EPDM.
5. The model, specifications and performance of hardware accessories shall comply with the relevant provisions of the current national standards.
6. The structural adhesive and weathering adhesive used in the hidden frame window should be tested for compatibility with the profile and glass before use.
Three processing
1. The processing of aluminum doors and windows should be carried out in the factory and must not be made at the construction site.
2. The drainage hole on the sliding window slide should follow the principle of the inner fan outer hole and the outer fan inner hole to ensure the sealing performance of the door and window, especially the sliding window with the horizontal horizontal top.
3. Before assembling aluminum doors and windows, the end processing burrs should be removed, and the end joints and the joints of the profiles must be sealed with waterproof glue to prevent the structure from seeping.
4. The structural assembly of the hidden frame window must be made and maintained in a clean room. Solvents, oil stains and other contaminants on the bonding surface of glass and aluminum frame must be removed with solvent; clean clean wipes should be replaced for each component or piece of glass; solvent should be poured onto the cloth, and the cloth is strictly prohibited from contacting the solvent bottle. mouth. The glue injection must be full, no air bubbles or leaks should occur, and the surface of the glue joint should be smooth and smooth; the residual glue of the glue joint should not be reused.
Four installation, product protection
1. Before installation, check the shape and position accuracy of the door and window openings, check whether the number and position of the pre-buried rafts meet the design requirements, whether the high-rise windows are connected to the lightning protection belt according to the regulations, and urge the construction unit for the unqualified parts. Rectification.
2. The oxidized material doors and windows that are caulked with cement mortar shall be treated with anti-corrosion treatment before the upper wall. Except for the exterior wall, the other surfaces of the window frame are protected with adhesive tape or plastic tape. There must be no adhesive tape or plastic tape on the wall to avoid water seepage in the joint.
3. After the wall of the door and window is fixed with wooden wedges, fix it with nails, and do not use nails or wooden wedges. Before the caulking, the supervisory unit (or construction unit) should be made to check the acceptance of the concealed project, and the vertical, horizontal and diagonal lines of the doors and windows should be checked.
7. Before the acceptance, the aluminum doors and windows should be cleaned and self-tested. Do not use the cleaning agent with corrosion ratio of aluminum profiles, glass and hardware accessories; the problems caused by self-test should be rectified in time.
Five engineering acceptance
1. The acceptance of aluminum door and window project shall be carried out in accordance with GB50300 “Unified Standard for Construction Quality Acceptance of Construction Engineering†and GB50210 “Code for Quality Acceptance of Building Decoration Engineeringâ€.
2. The acceptance of the aluminum door and window project shall be carried out on the basis of the concealed project acceptance and the self-inspection of the construction unit.
3. The following documents and records should be checked during project acceptance: 3.1 Door and window production license and installation qualification certificate.
Nuclear, wooden wedges after caulking must not remain in the seam.
4. Waterproof glue between the window frame and the wall must be done after the wall is dry. If the wall is not dry and the dust is not cleaned, the water vapor released from the wall will invalidate the seal.
5. After the wet work is completed, remove the protective adhesive tape or plastic tape and the dirt in the window frame department before installing the glass and window sash.
6. After installation of glass and window sash, check whether the accessories are missing, whether the installation is firm, the window sash is flexible, and the open window should be closed before acceptance to prevent damage to the window sash caused by the storm.
3.2 Engineering design calculation book, design specification, construction drawing, door and window inspection report, aluminum door and window product quality certificate, concealed project acceptance record, installation and construction self-inspection record, and product certification of aluminum profiles, glass, sealing materials and hardware accessories , quality assurance and entry acceptance records, of which aluminum profiles, safety glass and structural adhesives should also provide re-inspection reports.
3.3 The hidden frame window shall also provide the compatibility test report of the structural adhesive and the weather resistant adhesive, the temperature and humidity records of the rubberizing and curing environment. The domestic glue should provide the product production certification certificate, and the imported rubber should be the supplier inspection certificate.
Special attention should be paid to the installation and construction of the six coastal areas.
Due to the large amount of salt and alkali contained in the wind and rain in the coastal areas, some areas have been cleaned by the use of national standards that have not been desalinated. The corrosion of aluminum alloy doors and windows is more serious and should be given special attention. In addition to the procedures described above, the following procedures should be followed:
1. The aluminum doors and windows that are transported to the site shall be placed in a well-ventilated, dry bath and clean warehouse.
2. The height of the wooden surface of the sleeper should be >=100mm, no more than 15 molds per fan, and soft material should be applied between each mold (fan) to prevent crushing and aluminum alloy and hardware. The mutual friction destroys the protective film on the surface of the profile.
3. There must be a drip line at the door and window opening, which should be checked before installation. Because the rainwater flowing through the wall made of sea sand is very corrosive, it must be prevented.
4. It is advisable to use a card type to install the iron piece to minimize the amount of damage to the aluminum alloy protective layer.
5. The aluminum alloy profile joint is sealed with a neutral glue to prevent rain from entering the inner cavity without the protective layer. As a rule of thumb, corrosion usually begins with the inner cavity without a protective layer.
6. After the interior and exterior decoration is completed. Remove the protective tape and clean the doors and windows. Do not clean the doors and windows with corrosive liquids or hard objects to avoid damage to the surface paint film.
7, important tips:
1) Aluminum is a lively metal. The damage of the protective layer is not anti-corrosive. It is easy to occur. The bat should be taken to protect the surface of the profile.
2) Water is the source of corrosion, and it should be prevented from entering the inner cavity of aluminum alloy profiles without anti-corrosion ability.
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