I want to smash the floor slab of the living room part of the attic on the top floor of the small hi

First of all, the property will come to you, and you will destroy the original structure of the house: secondly, the floor slab will be demolished, which will have an impact on the load-bearing of the walls on both sides, and the walls on both sides will be subject to the reverse tension more obviously, and the wall will definitely crack after a long time. That's what happened next door to my house, which caused the public wall of my house and his house to crack, and it hasn't been solved yet.

This can not be dismantled casually, if it is built when the building is built, then you have to ask the engineering department, if it affects the overall structure of the house, it can not be demolished, and it is not safe to dismantle. If you add it after building a house, it will generally not affect the structure of the house, and people will agree to your demolition.

Yes, but it's better to add a steel beam to the side of the slab.

It is connected to the beams on both sides laterally, and there are ring beams around the floor slab, which are welded together with the steel bars on the side of the floor slab.

To find a professional demolition, the reinforcement company to the site to actually investigate, to see if there is a reinforcement method to replace the original force after demolition...