If the pipe size is 4" and you have an offset distance of 36", what would be the cut piece length?

To determine the correct cut piece length for a pipe when given the pipe size and offset distance, we need to understand the geometry involved in making an offset.

In this instance, a 4" pipe size indicates the nominal diameter of the pipe, but for calculations involving offsets, we typically use the outside diameter for fittings unless specified otherwise. The actual outside diameter of a 4" pipe is approximately 4.5 inches, factoring in the wall thickness.

When making an offset, the cut length is calculated based on the rise (or the vertical change) and run (the horizontal distance) that will be achieved with this offset. The 36" distance given is considered the run of the offset. Additionally, we'll need to assume a certain angle for the offset, as this will affect the length of the cut required.

For a common offset configuration, let's say we're using a simple right-angle approach with a rise that matches the pipe's straight distance and a typical fitting that allows for the necessary bend. The resulting length will be affected by how both the horizontal and vertical sections of the pipe are accounted for in the total measurement.

Using some basic calculations, which involve recognizing that typically the run of a standard offset (especially in common plumbing or mechanical