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There are many types of rolling offsets. 2 common are rolling offset using 45 degree fittings and a rolling offset using any angle.

using 45's

Rise: elevation change

roll: run of the pipe moving to the left or right

Travel: the run of pipe to make the offset

Simple formula

Travel = SQRT((rise(squared) + Roll(squared) ) x 2)

rise = 10"

roll= 16"

Travel=?

travel= SQRT ( ((10 x 10) + (16 x 16)) x 2 )

travel= SQRT ( ((100) + (256)) x 2 )

travel= SQRT ( ( 356 ) x 2 )

travel= SQRT ( 712 )

Travel= 26.68333 or 26-11/16"

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Q: What is the formula for a rolling offset with 2 45's?
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