There are three lots of joists in 30 degree intervals model one of them, then array the other two. Add the odd extra one at the end.paulgill28 wrote: ↑Thu May 20, 2021 11:20 am Can you explain further what you mean by "And for heavens sake don't go modelling the lot use the symmetry that's there."?
Note the joints aren't correct, it's to do with centre lines. I leave you to fix. I've used some Expressions, and Sketcher_CarbonCopy for sketches.