Hi there,
I am in the middle of putting up a portal frame, and have posted a query before about the hole- now sorted out.
My next question regards the engineer's drawing of the pier footing reinforcing. I'd be OK if I had a top or side view to work with!
Anyway it appears there are 4 lengths of thicker reo (N12) running parallel with the RHS, forming corners of a box, but what do the zig-zag lines represent- "ligs"? Thinner reo (R6) I realise, but does it form a continuous spiral running around the 4 verticals, or just a zig-zag on 1 side, 2 sides, or 4 maybe, meeting up with them?? And how, if at all, does that structure join the RHS? My only idea is the two N12 bent into a U, which are to be welded to the RHS must join it somehow. "Bend into footing" is the description, so maybe just hooked into place?
And what is the difference between N and R reo bar, is it critical?

Thanks in advance!

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