Steel beam HEA / HEB / IPE under extension - dimensioning help

[padrecam]

How thick a concrete slab were you planning to calculate there? 1 m³ of concrete with reinforcement weighs approximately 2300 kg.

25 cm of concrete

 

[padrecam]

Hope this can facilitate the assessment

 

[Albireo]

The existing walls distribute the load on the underlying floor better than an iron pillar (without a plate underneath). If the house was built for this wall to be load-bearing, I believe there is a rim beam beneath the door and wall that is thicker than the rest of the basement floor. When the floor under the door was cast in 1958, I believe that reinforcing iron was used very sparingly in the construction. If the floor consists of a thin concrete slab (6-8cm), it cannot withstand a large load.

 

[padrecam]

The inspector approves the calculation and the proposal. Thank you for your help.