The following load conditions and combinations are mainly considered for curtain walls.

Constant load
The constant load includes the self-weight of the curtain wall structure system and glass and its accessory components, etc.

The glass is 10+12A+(8+1.52PVB+8mm) hollow laminated tempered glass.

As the glass self-weight surface load standard value of about 0.67kN/m2, taking into account other ancillary components, take the glass curtain wall self-weight surface load standard value of 0.847kN/m2 (steel self-weight automatically loaded by the software).

Wind load
The standard value of wind load Wk= The ground roughness category in the area where the structure is located is B. The basic wind pressure W0=0.3kN/m2, the gust coefficient, the local body coefficient of wind load, and the wind pressure height variation coefficient are taken in accordance with the Code for Structural Loads of Buildings (GB50009-2012).

Temperature action
The temperature action is considered in accordance with the warming 30℃ and cooling 30℃ respectively (Note: the ambient temperature is considered at 15 degrees when the cable is tensioned).

Seismic effect

The seismic intensity of the area is 7 degrees, the design basic acceleration is 0.10g, and the design earthquake grouping is group III. The horizontal seismic load is considered, and the horizontal seismic load is non-controlled variable load.

The choice of materials.

(1) The wall thickness of structural members of profiles for curtain wall is not less than 3mm. minimum average film thickness is 15дm, minimum local film thickness is 12дm.
The surface color of the anodized aluminum alloy profile is basically uniform, and defects such as corrosion spots, welding wounds, black spots and oxide film peeling are not allowed.

(2), frame support glass curtain wall should be used for safety glass.
The use of glass rib support point-supported glass curtain wall, the glass rib should be used to toughen the sudden layer of glass. High density of personnel flow, youth or young children’s activities in public places and the use of easy to be impacted by all bits of safety glass should be used.