What is the take-off for a 10" pipe in a 90° butt weld ell?

The take-off for a pipe in a 90° butt weld ell is determined by the nominal pipe size and the type of fitting used. In this case, for a 10" pipe, the take-off typically corresponds directly to the diameter of the pipe, which is 10 inches.

When calculating the take-off for fittings like elbows or bends, it's standard practice to maintain the same nominal size as the pipe being used—unless otherwise specified by certain design criteria or specifications. The fitting has a specified dimension that is usually identical to the nominal size of the pipe it is meant to fit.

This means that in the case of a 90° butt weld ell fitting for a 10" pipe, it would also have a take-off measurement of 10 inches, ensuring there is a proper fit and flow through the system without any complications.

Fittings may have additional dimensions for clearance, but when it comes to basic take-off calculations, sticking to the nominal size is the guideline to follow. This understanding is essential for pipefitting to ensure accurate cutting and joining of pipes.