Simple question: Simpson LUC hangers with common rafters?
This should be a super simple question to answer, but I’m just not finding said answer yet.
I will be building a hip roof out of 2×10 rafters. The engineer specified that the common rafters be attached to the ridge beam with Simpson LUC (LUC210Z) hangers. Those are hangers with concealed flanges and a 90 degree perpendicular (non-angled) bottom.
Question: How do I install the rafters with a 4:12 slope in a hanger with a non-angled bottom?
Do I make a little birds-mouth at the top so that part of the rafter lies flat on the hanger bottom? Or do I just place the rafter in the hanger and nail it from the sides but do nothing with the bottom, leaving a 4:12 empty gap between the bottom of the hanger and the rafter (the rafter only touches the edge of the hanger bottom)?
(I know there are LRU hangers that are specifically for rafters, but that’s not what was specified)