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Anonymous users2024-01-24Your question refers to impermeable concrete for basement roofs in high-rise buildings, or impermeable concrete for toilet slabs.
The current design generally has a covering soil on the roof of the basement, so impermeable concrete is generally used.
Toilet slabs are generally not considered to be made of impermeable concrete.
According to the national regulations on the calculation of the construction area, the balcony is counted as half of the construction area regardless of whether it is closed or not, and the whole balcony of the half balcony is counted as half of the construction area, and the structure on the roof is not counted as the construction area. The balcony on the roof of the basement you mentioned should be the balcony on the first floor, which is half an area, and the meter-high one on the roof should be a flower stand, which is not considered the construction area. >>>More
Is it gray with gray wings, a bit like a moth, it dies with a light press, if it is from the sewer, the toilet is fine, there is water in the mouth, the sewer mouth is as small as possible, or it is not possible to find something to cover, try not to expose the sewer mouth.
The following problems need to be solved;
The discharge of kitchen sewage, the water flows to a low place, depending on whether the conditions are acceptable; >>>More
GB50353-2005 "Code for Calculation of Construction Area of Construction Projects": It is stipulated that the area of the balcony shall be calculated according to the horizontal projection 1 2.
Design problems, under normal circumstances, the basement is only used as a parking garage and does not need to be equipped with a toilet toilet, only when the underground garage is used as a civil air defense bomb shelter, there will be a place to set up a toilet toilet, which will become a toilet in wartime.