1. Does the attic count as the construction area?
The attic is generally at the higher level of the building, and it becomes a whole as an accessory building and building.
In residential buildings, the scope and method of calculating the construction area are:
1, single-story building, regardless of height, is calculated as one floor, and its construction area is calculated as the horizontal area above the external wall of the building. Part of the floors (such as the attic) of the single-storey residential building area should also be calculated.
2. The construction area of multi-storey or high-rise residential buildings is calculated according to the sum of the construction areas of each floor, the bottom floor is calculated according to the peripheral horizontal area above the toe of the external wall of the building, and the second floor is calculated according to the peripheral horizontal area of the external wall.
3. The construction area of the basement, semi-basement and corresponding entrances and exits shall be calculated according to the horizontal area of the periphery of the upper external wall (excluding the lighting well, moisture-proof layer and its protective wall).
4. Use deep foundation as underground overhead floor. 2.2 meters high, the construction area is calculated by half of the horizontal area outside the overhead floor.
5, through the building channel, the hall in the building, hall, regardless of height, are calculated according to a floor construction area. The hall corridor is calculated according to its horizontal projection area.
6. The construction area of elevator shaft, elevator shaft, garbage chute, pipeline shaft and chimney with wall shall be calculated according to the natural floor of the building.
7. The technical floor in the residential building (used for placing all kinds of equipment and maintenance) is more than 2.2m high, and the construction area shall be calculated according to the horizontal area outside the technical floor.
8, independent column awning, the construction area is calculated by half of the horizontal projection area of the top cover; Multi-column awning, the construction area is calculated according to the peripheral horizontal area.
9. Staircase, water tank room, elevator machine room, etc. With prominent building envelope, its construction area is calculated according to the horizontal area of the periphery of the building envelope.
10. The overhead corridor with a roof between two buildings shall be calculated according to the projected area of the corridor. The construction area of overhead corridor without roof is calculated as half of its projected area.
1 1. Doors protruding from the wall and overlooking rooms, the construction area is calculated according to the horizontal area of the periphery of the envelope.
12. The construction area of closed balcony and verandah is calculated according to the horizontal projection area of its periphery. The construction area of concave balcony is calculated according to half of its net balcony area (including balcony railings). Balcony is calculated according to half of its horizontal projection area.
13. If there are no stairs in the residential building and there are outdoor stairs (including evacuation stairs), the outdoor stairs shall be calculated according to the horizontal projection area of each floor; If there are stairs in the building and there are outdoor stairs (including evacuation stairs), the outdoor stairs shall be calculated according to half of the horizontal projection area of each floor.
Second, the attic area calculation method
How to calculate the construction area of attic can refer to GB/T50353-2005 Code for Calculation of Construction Area of Building Engineering.
The construction area of a single-storey building shall be calculated according to the horizontal area of the periphery of the structure above the external wall, and meet the following requirements:
1, the height of single-storey building is more than 2.20m, and the total area shall be calculated; If the height is less than 2.20m, the area shall be calculated as 1/2.
2. When using the space in the sloping roof, the part with clear height exceeding 2. 10m shall be calculated as the whole area; the part with clear height between 1.20m and 2. 10m shall be calculated as 1/2 area; The part with clear height less than1.20m is not counted as the area.
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