How to calculate the floor area of an ordinary civil building?

The floor area calculation value is specific and has a specific calculation method.

1. The floor area ratio refers to the quotient of the calculated value of the total above-ground construction area and the total construction land area in a certain plot. The calculated value of the total above-ground floor area is the sum of the calculated value of the above-ground floor area of each building in the construction land; If there is an operating area underground, the operating area shall not be included in the construction area for calculating the floor area ratio. Under normal circumstances, the calculation value of the construction area shall be implemented in accordance with the provisions of the Code for the Calculation of the Construction Area of Construction Projects (GB T50353-2005); In case of special circumstances, the following provisions of these rules shall be followed.

2. When the standard floor height of the residential building is greater than meters (meters), regardless of whether there is a partition in the floor, the calculated value of the construction area is calculated according to 2 times the horizontal projection area of the floor; When the floor height of a residential building is greater than meters (m 2+ m), regardless of whether there is a partition in the floor, the calculated value of the floor area is calculated as 3 times the horizontal projection area of the floor.

3. When the standard floor height of the office building is greater than meters (meters), regardless of whether there is a partition in the floor, the calculated value of the construction area is calculated by 2 times the horizontal projection area of the floor; When the floor height of an office building is greater than meters (m 2+ m), regardless of whether there is a partition in the floor, the calculated value of the floor area is calculated as 3 times the horizontal projection area of the floor.

4. When the standard floor height of ordinary commercial buildings is greater than meters (meters), regardless of whether there is a partition in the floor, the calculated value of the construction area is calculated according to 2 times of the horizontal projection area of the floor; When the floor height of an ordinary commercial building is greater than 10 meters (m2 m), regardless of whether there is a partition in the floor, the calculated value of the floor area is calculated as 3 times the horizontal projection area of the floor.

5. When calculating the floor area ratio index of a building with a balcony, the calculated value of the floor area of the balcony part shall be calculated according to its horizontal projection area.

6. When the roof surface of the underground space is more than one meter above the outdoor ground, the calculated value of the construction area is calculated according to the horizontal projection area of the floor; If the roof surface of the underground space is less than one meter above the outdoor ground, its construction area shall not be included in the floor area ratio. If the elevation of the outdoor floor of the building is inconsistent, the elevation of the nearest urban road around shall prevail and add meters as the outdoor floor, and then approve it according to the above provisions.

7. The foyer, lobby, atrium, corridor, lighting hall and other public parts and roofs of residential, office and ordinary commercial buildings, detached residential buildings and large-scale commercial buildings for special purposes, industrial buildings, gymnasiums, museums and exhibition halls are not calculated in accordance with these rules, and the calculated value of their construction area shall be implemented in accordance with the provisions of the Code for Calculation of Construction Area (GB T50353-2005).

8. The design unit shall indicate the construction area and the calculated value of the construction area respectively on the general plan.

9. The values specified in these rules include this number.

You have to know the base area of the building, and then multiply it by how many floors, refer to the "General Principles of Civil Building Design".

1. Regardless of its height, the construction area of a single-storey building shall be calculated according to one floor, and its construction area shall be calculated according to the peripheral horizontal area of the structure above the foot of the outer wall of the building. If there are some floors in a single-storey building, the floor area of the first floor is included in the single-storey building, and the floor area of the second floor and above should be calculated. For single-storey buildings with high and low spans, when the area of building oak removal needs to be calculated separately, the outer edge of the structure should be used as the boundary to calculate the area of the building separately.

2. The construction area of a multi-storey building shall be calculated according to the sum of the construction area of each floor, and the construction area of the first floor shall be calculated according to the peripheral horizontal area of the structure above the foot of the external wall, and the second floor and above shall be calculated according to the peripheral horizontal area of the external wall structure.

3. When the structure and number of floors of the same building are different, the construction area should be calculated separately.

4. Basements, semi-basements, underground workshops, warehouses, shops, stations, underground headquarters, etc., and the corresponding construction area of the population shall be calculated according to the horizontal area of the outer wall of the upper mouth.

5. When the building built on the slope is designed to use the stilt space to set up the overhead layer and the deep foundation underground overhead layer to be used, its height exceeds 2.2 meters, and the construction area is calculated according to the horizontal area of the periphery of the enclosure structure.

Summary. The basement floor area is not calculated based on the floor area or roof floor area, it is recommended to look at the floor area calculation rules.

Hello. The formula for the floor area is: length x width x number of floors.

The floor area refers to the total horizontal area of each floor of the building, including the usable area, auxiliary area and structural area. The building area is an economic indicator that indicates the size of the building, and it is also a physical quantity index that reflects the scale of building construction in square meters.

Can the basement and basement roof be counted together?

The basement floor area is not calculated based on the floor area or roof floor area, it is recommended to look at the floor area calculation rules.

Summary. Hello, glad for your question.

Floor area = building area in the suite + shared area. The construction area refers to the sum of the horizontal projection area of the periphery of each floor above the foot of the external wall (column) of the building, including balconies, corridors, basements, outdoor stairs, etc. The shared area refers to the commercial housing that should be apportioned and included in the sales area in the sale of commercial housing".

I hope mine can help you and have a great day

Calculate the floor area.

Hello, glad for your question. Floor area = building area in the suite + shared area. The construction area refers to the sum of the horizontal projection area of the periphery of each floor above the foot of the external wall (column) of the building, including balconies, corridors, basements, outdoor stairs, etc.

The shared area refers to the commercial housing that should be apportioned into the sales area in the sale of commercial housing, "I hope my can help you, I wish you a happy life."

You can do the math for me, and give it a thumbs up.

About 280 square meters.

1. Construction area = building area in the suite + shared area. The construction area is the sum of the horizontal projection area of the outer periphery of each floor above the foot of the external wall (column) of the building, including balconies, corridors, basements, outdoor stairs, etc. The shared area refers to the area of public building space in the commercial housing that should be apportioned to the sales area of Zheng Dajin in the sale of commercial housing.

2. Pooled area = pooled coefficient * set of construction area. Pooling coefficient = total common sharing area (floor area of units * total number of units). The construction area of the set = the usable area of the set + the area of the wall.