What is the equation to calculate travel based on the offset for a 22 1/5 offset?

To determine the correct equation to calculate travel based on a 22 1/5 offset, it's essential to understand how the offset affects the pipe’s travel distance. In plumbing, particularly in pipework involving offsets, the travel or run can be determined using specific multipliers that account for the angle of the offset.

In this case, a 22 1/5 degree angle corresponds to a specific multiplier that will yield the travel distance when applied to the offset. The correct multiplier, which represents the ratio of the travel distance to the offset for a 22 1/5 degree angle, is approximately 2.61. This means that to find the resultant travel, one would take the offset measurement and multiply it by 2.61.

Utilizing this multiplier allows a plumber to calculate the actual distance the pipe will cover when aligning along the determined offset angle, ensuring that installations are accurate and effective in maintaining proper drainage and flow.

In contrast, the other choices represent incorrect calculations. The option with 22 multiplied by the offset seems to imply a direct relationship without considering the geometric effect of the angle, while the choice including 1.61 is aligned with a different degree offset, which does not correspond to 22 1/5 degrees