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It can be done, but it is necessary to pay attention to heat preservation, otherwise it is dangerous.
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Depending on the winter temperature, it is generally possible to add antifreeze to minus 5-10 degrees, but the subsequent winter application cost is very high.
You can add a balcony to the back. But it's better not to put anything else. Because the balcony does not have the main tendons. I am a construction site worker.
1. The root of the pick beam is affected by the bending moment and shear force; >>>More
Generally speaking, the balcony doors and windows of the building are used as supporting walls to reduce the span of the balcony, and most of them are load-bearing walls.
If the balcony void is poured with reinforced concrete, there is generally no need to make a waterproof layer. If you have to do it, you can consider cement-based permeable crystalline waterproofing coatings.
Control the thickness of the upper protective layer of the canopy slab, so that the stressed steel bar is located in the upper part of the structural slab. That's it.