The upper floor is 17 floors, my house is on the 3rd floor, and I want to open a wide 800 on the loa

I don't know what kind of wall you mean by 'load-bearing wall'.

The current high-rise buildings are shear wall structures, and the load-bearing walls are 'reinforced concrete', which must not be smashedThere are also some small high-rise parts of the load-bearing wall that are 'brick walls', which can be knocked on the premise of reinforcement.

If you can make it clear that the wall is a brick wall, then tell us the safest way.

No, it should be 800*high, and 2100 people will have a big hole in the wall, and if such a large door is the upper limit of the building, it will be very high.

There will be cracks in such an empty building.

If you want to think of such a door, I recommend not to install it very dangerous.

The load-bearing wall is the stressed structure of the building, and it cannot open the door without authorization, renovate and so on. Otherwise, it will affect the force of the structure, resulting in the imbalance of the entire structural system, and the safety factor will be greatly reduced.

Don't try to make changes privately, if discovered, it will be very serious and may affect the safety of you, your family, and those around you.

If you want a solution, unless you find the design unit of the building, ask to calculate the load-bearing factor of the load-bearing wall, and whether it can be changed, and issue a certificate, and then the parties can negotiate and make a legal decision. However, I don't think this plan is feasible.

Load-bearing walls, it will be dangerous if you move! Because you don't use the same designer in the whole building, everyone is told that it's okay, and everyone goes to move that wall, and it will collapse eventually.