I need to place an 8' header in a space where my floor above is sagging. For max strength I want to use a double LVL, rather than the usual 2-by lumber. The room has a low ceiling, so there is only 8.5" available over the door. Can I rip a 9.25 LVL down to 8.5 without destroying the integrity of it?
By the way, the reason for the sag isn't because of the existing double 2 x (8.5) header, but because of insufficent support on one end.