Hello,
to support decks on 2 levels, I plan to weld together two identical steel structures (see the file for a simple sketch). One will be against the facade and the other 1.5 meters out, at level 1 (3 meters) and level 2 (6 meters) they will support decks with dimensions of 1.5x3 meters. I am considering using square profile but what dimension do I need, is, for example, 70 mm side and 4 mm wall thickness sufficient? Both arches will be placed on cast foundations. Very grateful for all the help!
Stenper
