Aluminum door and window accessories uses doors and windows made of aluminum alloy extruded profiles as frames, mullions and fans, referred to as aluminum doors and windows. Wood and plastic composite doors and windows with aluminum alloy as the base material of the stress bar (the bar that bears and transmits the self-weight and load), referred to as aluminum-wood composite doors and windows, aluminum-plastic composite doors and windows.
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different concepts
both curtain wall and doors and windows belong to the building maintenance structure, and neither share the stress of the main structure, which makes qualitative doors and windows or curtain walls difficult. In order to ensure the appearance, many enterprises also need to consider saving costs. They often use the design of door and window materials to produce curtain wall effect. To some extent, it not only brings troubles to the construction acceptance, but also lays hidden dangers to safety.
In order to avoid the continuation of this kind of situation, the line standard "technical specification for glass curtain wall engineering" clearly defines the concept of glass curtain wall: composed of supporting structure system and panel, the external maintenance structure or decorative line structure that has a certain displacement capacity relative to the main structure and does not share the role of the main structure.
One point is mentioned here: it has a certain displacement capacity relative to the main structure. As the maintenance component of the support in the opening of the main structure, doors and windows cannot meet the ability of displacement relative to the main structure. In the design of curtain wall, the whole frame is hung on the outside of the main structure, and the realization of relative displacement can be ensured by designing structural measures such as expansion joints.
Different standards and specifications
the state has launched aluminum alloy doors and windows (GBT8478-2008) as the latest national standard for doors and windows. At the same time, each province (District and City) standard. For example, the technical specification of Jiangsu knowledge aluminum alloy doors and windows Engineering (DGJ32/J07-2005), Guangdong knowledge aluminum alloy doors and windows engineering design, construction and acceptance specification (DBJ15-30-2002), etc, on the premise of meeting the requirements of the national standard in the engineering design of aluminum doors and windows, we should also try our best to meet the requirements of provincial standards in various regions to ensure that the local acceptance is qualified. The classification and testing method of air tightness, watertightness and wind pressure resistance of exterior doors and windows of buildings (GBT7106-2008) is the latest national standard for testing and grading the engineering performance of doors and windows.
As the leader of the curtain wall industry standard, the technical code for glass curtain wall Engineering (JGJ102-2003) has been widely recognized by the industry, the national standard "building curtain wall" GB/T21086-2007 has made a more comprehensive exposition and agreement on the curtain wall system; "building curtain wall" (GB/T21086-2007), "Building curtain wall airtight, watertight, the test method of wind pressure resistance (GB/T15227-2007) provides the basis and method for the test and grading of curtain wall engineering performance.
