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If the crack is big and you are worried about safety, look for the property first, because if there is a heavy object falling, it is not only the family that threatens it, and the property will not turn a blind eye. If there is malfeasance in the property, then find the news media to expose it.
As long as it's easy to walk!
There's a lot of space, just put it there. >>>More
Hollow masonry is used to raise the floor floor to minimize the load on the floor. In general, there is no problem - balanced force!
If you are looking for Mr. Zhou Yinchan, he will help you for free.
The connection can be closed with glass glue. Cut the iron pipe, the surface is embroidered with turbidity, and polish it off with a sand peel, the cleaner the better, the smoother the better; Put the iron pipes into the PVC pipes, the overlapping parts should not be less than 5 cm, and fill the gaps between them with glass glue.
When you first rent, you should have negotiated, and if you didn't negotiate, it's better not to rent, and you should live in the master bedroom a little more.