Demolition of the load-bearing wall in the old building, instead of columns, into a hall. How?

To "support the beam for the column" is to put the steel beam on the outer wall and try to support the above column on the steel beam. If the bearing capacity of the steel beam on the external wall is insufficient, we can consider removing a part of the external wall, cast-in-place concrete columns at the removed places (of course, the foundation must be prepared first), and then put the steel beam on the concrete columns. Many hotel halls are transformed in this way.

Load-bearing wall refers to the wall that supports the weight of the upper floor. It is a black wall on the engineering drawing, and it will destroy the whole building structure if it is knocked out. Non-load-bearing wall refers to a wall that does not support the weight of the upper floor, but only separates one room from another. There is a hollow wall on the engineering drawing. Whether this wall has much influence on the building structure.