Aluminum alloy doors and windows on the project construction is also a major capital item, where there is capital, where there is capital control, small editor today to share with us benchmark real estate enterprises in planning, construction and cost of three aspects of aluminum alloy doors and windows engineering technology and capital control.
1. Aluminum profile
The first is the original data. Generally, 6063-T5 is selected. The allowable error of profile cross-section dimension is divided into general level, high-precision level and ultra-high-precision level, which is generally implemented according to general level. As long as the scale or high-level doors and windows with equipment connection are subject to high-precision or ultra-high-precision level. Secondly, the minimum wall thickness of the profile. The wall thickness of the main profile of aluminum alloy doors and windows shall be determined by calculation or experiment. In addition to the profiles requiring elastic equipment such as battens and gusset plates, the minimum measured wall thickness of the section of the base material (the entry "base material" is provided by the professional Encyclopedia) of the main section of the door main section shall be no less than 2.0 mm, and the minimum measured wall thickness of the base material section of the main section of the window main section shall be no less than 1.4 mm.
2. Safety rules
First of all, safety glass should be used for aluminum alloy doors and windows that are easy to be hit by people and objects in public places with high mobility; secondly, safety glass should be used for aluminum alloy doors and windows in the following parts of buildings:
A. Open windows for buildings with 7 floors or more;
B. Window glass with an area greater than 1.5 square meters;
C. Floor to floor windows with glass bottom edge less than 500 from final decorative surface;
D. Aluminum alloy windows for tilting equipment.
Thirdly, aluminum alloy sliding doors, sliding window leaves, there should be equipment to avoid dismantling from the outside of the room. When the sliding window is used for the external wall, the equipment shall be set to prevent the window sash from falling to the outside.
3. Lightning protection planning
The lightning protection planning of aluminum alloy doors and windows should conform to the relevant rules of the current national code "code for planning of lightning protection of buildings" (GB 50057).
4. Planned service life
According to Article 8 of technical code for functional appraisal of residential buildings (GB / t50236-2005), the planned service life of doors and windows can be divided into three levels: no less than 20 years, 25 years and 30 years.
Dry method: according to the standard "dry equipment should be selected", metal frame should be attached to the equipment first, then the hole should be plastered, and then the door and window frames should be installed.