According to the size of the design

According to the size of the design drawing, the roof is a sloped area. The occupied area shall not be deducted from the fireplace, base, air pipe, small air window, inclined ditch, etc. of the house. The front part of the small air window does not increase the surface.According to the size of the design drawing, the waterproof of the roof is calculated from the surface. Calculate the inclined roof according to the inclined area; the area occupied by the chimney, the bottom of the chimney, the air pipe, the small air window of the roof and the inclined groove of the roof; do not subtract the curved part of the diaphragm wall. The expansion seal and light well on the roof are combined with the work in the roof.3. (L) the sealing of the enclosure is calculated by the area according to the size of the design drawing.4. (L) the tightness of the soil surface ("soil") is calculated by area based on the size of the design drawing. According to the calculation of the separation area between the main walls, the area exceeding the soil shall be subtracted from the area occupied by the structure, equipment foundation, etc., without subtracting the area occupied by the isolation wall and the column, chimney, chimney and hole with an area of no less than 0.3 square meters.