[China Glass Net] The glass curtain wall is mainly made of glass as the facing material, covering the surface of the building surface. It looks like a thin layer on the outside of the building, which adds to the beauty of the building.
First, the characteristics of the construction method of the glass curtain wall
1. It is easy to operate and ensure the quality of glass curtain wall installation and construction.
2. Save costs and reduce unnecessary rework caused by improper construction process.
3. Facilitate project management and standardize and standardize glass curtain wall construction.
Second, the scope of application of this glass curtain wall construction method
This method is applicable to hidden frame glass curtain wall, semi-hidden frame glass curtain wall, exposed glass curtain wall, all-glass curtain wall and point supporting glass curtain wall with non-seismic and seismic fortification intensity not more than 8 degrees.
The construction of the project shall be based on the design drawings and relevant construction and quality acceptance specifications.
Third, the requirements of materials and equipment
1. General regulations
a. The materials used for the glass curtain wall shall comply with the relevant provisions and design requirements of the current national standards. Materials that do not have corresponding standards should meet the design requirements and should have a factory certificate.
b. Glass curtain wall should be made of weather resistant materials. In addition to stainless steel and weathering steel, the metal materials and metal parts shall be subjected to surface hot-dip galvanizing treatment, inorganic zinc-rich coating treatment or other effective anti-corrosion measures. The aluminum alloy materials shall be subjected to surface anodizing, electrophoretic painting and powder. Spray or fluorocarbon paint spray treatment.
c. Glass curtain wall materials should be made of non-combustible materials or flame retardant materials; fireproof sealing structures should be fireproof sealing materials.
d. Invisible frame and semi-hidden frame glass curtain wall, the bonding of glass and aluminum profile must use neutral silicone structural sealant; when all glass curtain wall and point support curtain wall adopt coated glass, acid silicone sealant should not be used. Bonding.
e. Silicone structural sealants and silicone building sealants must be used within the validity period.
2, curtain wall skeleton
a. The skeleton profile of the glass curtain wall, such as square steel pipe, angle steel, channel steel, painted galvanized steel plate and stainless steel and other metal profiles, must meet the design requirements to select qualified products, and should be matched with aluminum alloy frame materials.
b. The aluminum alloy frame system is mostly the curtain wall skeleton profile which is specially extruded. When it is selected, it depends on the design of the curtain wall frame force, and it is used according to different series.
c. The glass curtain wall adopts the grade of aluminum alloy material, the quality of aluminum alloy material, the doors and windows of the curtain wall, etc., and should comply with the current standards.
3, embedded parts, fasteners and connectors
a, the embedded parts of the curtain wall and various connectors and bolts, etc., mostly made of Q235 low carbon steel
b. Angled steel, anchor ribs, anchor plates, steel sections and steel plate processing parts shall be made in accordance with the relevant provisions of the national standards. They must be galvanized and rust-proofed during use.
c. The stainless steel materials shall comply with the current standards such as “stainless steel cold rolled steel plate†(GB3280), “stainless steel rod†(GB4226) and “cold top forged stainless steel wire†(GB4332·4232).
d. Weathering steel for glass curtain wall shall comply with the current national standard "High Weathering Structural Steel" (GB/T4171) and "Weathering Steel for Welded Structure" (GB/T4172).
4, curtain wall glass
a, safety glass (laminate glass, wired glass and tempered glass) should be used, otherwise the corresponding safety measures must be taken.
b. When the curtain wall uses heat-reflecting galvanized film glass, vacuum magnetron cathode sputtering coated glass should be used.
c. For curved glass curtain walls, curtain wall coated glass produced by thermal spraying can be considered.
d. The surface quality and geometrical dimensions of the glass shall be strictly checked during installation and use. The dimensional deviation, appearance quality and performance of the glass shall comply with the current national standards.
e. When glass curtain wall is made of insulating glass, it should meet the requirements of the current national standard "Insulating Glass" GB11944, and it should be consistent with: the thickness of the insulating glass gas layer should not be less than 9mm, and the insulating glass should be double-pass sealed.
f. For curved glass curtain walls, curtain wall coated glass produced by thermal spraying can be considered.
g. When the glass curtain wall is made of laminated glass, the laminated glass should be processed by polyvinyl butyral (PVB) film dry processing, and the temperature and humidity should be strictly controlled.
h. All curtain wall glass should be mechanically edging, and the number of grinding wheels should be above 180 mesh.
i. Curtain wall glass with fire protection requirements shall be made of single piece fireproof glass or its products according to the fire rating requirements.
5, pad, filling, caulking and sealing materials
a. The variety, specification, section size and physical and chemical properties of the positioning pad, filling material, caulking rubber and sealant should meet the design requirements.
b. The rubber products used in the glass curtain wall should be made of EPDM rubber, neoprene rubber and silicone rubber; the sealing rubber strip should be extruded and the rubber block should be molded.
Rayon Cotton Poly Spandex,Rayon Voile,Rayon Spandex Fabric,Rayon Foil
Shaoxing Shangda Textile Co., Ltd , https://www.shangdatex.com