How to Calculate the Square Meterage of Prefabricated Houses
The calculation of the square meterage of prefabricated houses is mainly based on the structural type of the building and measurement specifications, with different calculation methods for different structural types. Details are as follows:
Single-story prefabricated houses: Calculate based on the sum of the horizontal projected areas of each floor above the exterior wall plinth. For parts with a height of 2.20 meters or more, calculate the full area; for parts with a height of less than 2.20 meters, calculate half of the area. If the space inside a sloped roof is utilized, the calculation method should be determined according to the clear height: areas with a clear height of more than 2.10 meters are calculated as the full area; areas with a clear height between 1.20 meters and 2.10 meters are calculated as half of the area; areas with a clear height of less than 1.20 meters are not calculated. This calculation method fully considers the actual usable space of the house and ensures the rationality of area calculation.
Multi-story prefabricated houses: The first floor is calculated based on the horizontal area of the structural perimeter above the exterior wall plinth, and the second floor and above are calculated based on the horizontal area of the exterior wall structural perimeter. For floors with a height of 2.20 meters or more, calculate the full area; for floors with a height of less than 2.20 meters, calculate half of the area. For the space inside a sloped roof and under stadium stands, if designed for utilization, areas with a clear height of more than 2.10 meters are calculated as the full area; areas with a clear height between 1.20 meters and 2.10 meters are calculated as half of the area; if not utilized or the indoor clear height is less than 1.20 meters, the area is not calculated. This calculation method is similar to that of single-story prefabricated houses but is refined according to the characteristics of multi-story buildings.
Other structural prefabricated houses: Balconies are calculated as half of their horizontal projected area, regardless of their shape and position. For canopies where the width from the outer edge of the canopy structure to the outer edge of the exterior wall structure exceeds 2.10 meters, calculate half of the horizontal projected area of the canopy structure slab, mainly considering the actual usable function and space occupation of the canopy. The calculation method for corridors is determined according to their structural characteristics: for corridors with permanent columns, calculate the full area based on the horizontal area of the column perimeter; for corridors without columns but with a roof, calculate half of the area based on the horizontal projected area of the structural floor; for corridors without columns and without a roof, generally, the building area is not calculated.
