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My roof truss timbers are 38mm x 72mm, 600mm centres, 6m span.
Whats that in good old inches?
Seems a little skimpy, is this normal for a modern house?
I am trying to do a rough dead load calculation. All the information I can find is on 4"x2". Mine are more like 1 3/4" x 3".
Think I read that 4"...