Fig 4.5 and Table 4.2(b) tells you to put a multipass on one side of the tee and a single pass on the other side. Technically it looks like you could to one side flat, and one side V-up, but then you would have a flat only single pass (max size to be used in construction) and a V-up multi pass (min size to be used in construction). Doesnt seem real useful unless you have a very specifc project.