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Hi All, I have a first floor extension similar to the one in the photo below, but about half the span (~3.3m span with two columns). The photo shows that they used a steel beam with a plate welded to the underside, but installed the beam to carry the outer leaf rather than the inner one...

Hi Is the 2.1m external lobby/porch wall stable without a standard 3-brick (665m) return? 'Approved Document A' doesn't have a minimum wall length before a return/buttress is required. If not stable, what are the options? A 300 x X mm brick pier at the bottom corner, bed reinforcement/mesh...