What would be the take-off for a 20" pipe in a 90° butt weld ell?

The take-off for a 20" pipe in a 90° butt weld ell is indeed 20 inches. This refers to the length of pipe that extends out from the center of the fitting, which in this case matches the nominal pipe diameter.

In the context of fittings, take-off measurements are crucial for accurate pipe installation and can differ based on the type of fitting used. For a 90° butt weld ell, the take-off is influenced primarily by the pipe diameter, which directly correlates with how much pipe is needed to connect to the fitting. The standard take-off for a fitting generally mirrors the pipe size's nominal measurement. Therefore, a 20" ell will have a take-off of 20 inches.

Understanding this concept is essential for pipefitting to ensure that measurements are precise for proper fitting and connection in pipe systems. Other options would represent incorrect values for a standard take-off measurement associated with a 20" pipe.