With regard to the area of ​​public housing for commercial housing, there are no relevant regulations in the country. The size of the pool of public housing depends on the rationality of the planning and design of housing construction and the number of supporting facilities for housing.
According to the "Real Estate Measurement Standards" stipulations: The following areas should be included in the sharing of: elevator shafts, pipeline wells, stairwells, garbage roads, transformer rooms, equipment rooms, public halls, aisles, basements, guards on duty, etc. The total floor area of ​​public and administrative buildings served for the entire building is calculated as the horizontal projected area. The total building area also includes a partition wall between the suite and the public building, and a construction area of ​​half the horizontal projection area of ​​the exterior wall (including the gable).
Therefore, where the above facilities are complete, the apportioned area is correspondingly larger.
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