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No, you don't'The span is not very large, within the reasonable force range of the general simply supported plate, so rest assured.
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Is it a frame or brick concrete.
It depends on the force situation.
The terrace is the roof of the second floor, and if there are no people living and no independent buildings, it is not counted as living area.
Where are there three rooms at 9 meters, at most two, half of my house is half of the storefront and half of the living room.
Personally, it should be bad, rockeries and pools are built on the top floor balcony, the pressure on the house is relatively large, if the rockery and pools are built a small, it should be OK.
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Big brother, what do you think of the house drawings, the house design drawings are very expensive to tell you in vain, are you absolutely possible?