I am trying to widen the hall way which is behind the brick wall showing in the attached picture. Is it possible for my new wall to be a stud wall instead of a brick wall? This wall will support a beam of timber 5 inch by 4 inch (see picture) which carry the floor of the room above it. A local builder came today and said I can not replace a brick wall with a stud wall, it has to be brick or block wall. Any advice please