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It is necessary to distinguish the main structure, according to the "Code for the Calculation of the Construction Area of Construction Projects" GB T 50353-2013, all calculations within the main structure, and calculations outside the main structure 1 2.
The balcony of the building, regardless of the form, is calculated separately according to the main structure of the building.
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As the balcony can be sealed by oneself later and prevents stealing the area, it counts as all areas.
At present, the general building glass is tempered glass, and the sun room is also used, but it is generally double-layer insulating glass.
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Whether the cantilevered moisture-proof balcony of the factory building is considered a construction area, mainly depends on whether the balcony is closed or not.
Because it is not an indoor usable area, this is also stipulated in the calculation rules, and if it is all calculated, it will be fully calculated.
Building balconies, whether concave balconies, pick-up balconies, closed balconies, or open balconies, are calculated according to 1 2 of their horizontal projection area. The balcony is an architectural space for users to carry out activities and dry clothes.