Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It only takes a minute to sign up.
Sign up to join this communityI'm trying to install a 45° elbow joint in PVC. I've found several suggestions online, but frankly, they are incomprehensible to me and seem contradictory of one another:
Is there a straightforward way to calculate the takeoff?
First, a definition of "take off": The length of pipe to be removed (taken off) such that a pipe and a fitting make a specific length. The term is a concept shorthand used by pipefitters and plumbers. This is not the same as a material takeoff, which is a list of all materials needed for a project.
Take-offs in general are specific to pipe construction (PVC, copper, etc.) and is a function of diameter.
As suggested by bcworkz, tables for a given diameter and style of pipe are the best method for an accurate measurement.
The formula (listed in your link) .625 x pipe size (don't use the 25.4 factor, unless you are using millimeters) should give you a ballpark for a 45 fitting.
Thanks Daniel. The unit is (inch) according to the unit of pipe diameter (D)and any pipe diameter is applicable in formulas. (The Picture is only geometrical prove to have a better perspective). See below picture with more details.