Use I-beam to make the beam, and then add a piece of steel plate, steel plate and then play cast, so do it?
The floor slab can not be directly poured on the steel plate, so it is necessary to use profiled steel sheet (composite floor slab).Or beams are encrypted directly with steel slabs also.
You actually need to design calculations, but the load is not estimated, 200mm high I-beam should be enough.How big is it, depending on the load above you.
The steel beam and the two ends of the structure can be hinged, and the embedded parts shall be finished well.The main problem of steel beams is corrosion protection, which can be maintained regularly with anticorrosive paint.
