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Normal buildings are not also installed from the floor slab holes, as long as the normal holes do not affect.
The sunken floor slab of the bathroom should be waterproofed on the concrete slab, not the flat floor and then waterproofed. >>>More
There will be no honeycomb surface in the main structure. >>>More
Shut the water for 24 hours, and the water overflows to the highest point by 20-30mm.
To repair the drilled holes on the tiles, you can use white cement or porcelain white glass glue, and you can apply it.
Abstract Surely, the opening of the floor slab will definitely break the rebar in the first place, and then it will also destroy the wholeness. Therefore, it must affect the load-bearing, and as for how big the impact is, it has to do with the location of the opening and the size of the hole. >>>More