I am interested in removing an internal wall between kitchen and dining room, in a 1960's bungalow. The roof appears to have single span joists, so maybe the wall is load bearing.
However I am concerned that I will need an RSJ. Additionally I assume that I will need to get building regulation approvals.
If I ask a builder to give me a quote, would he be able to size the RSJ, and apply for approvals.
If I would like to do the work myself, should I get a structural engineer to size the RSJ, and he could apply for approvals?