I'd like to extend the following plumbing penetration to a spot higher on the roof. At this time I have access from above to the pipe embedded in the wall, and access to the roof below the 6" dimensional rafters:
I'd like to stick with galvanized and with long sweep elbows if possible, to preserve the ability to snake the fixture from the roof if needed later.
6:12 pitch is 6 inches rise per 12 inches of run, or 26.57 degrees. The pipe comes up vertically, so we're interested in 90 - 26.57 = 63.43 degrees.
Will be inspected to California Plumbing Code.
Yet, there seems to be no 63.43 degree elbows made ;-)