Here you go: 2.613.
Constants and Formulas for Calculating Common Offsets
ELBOW FITTING ANGLES
72 degree 60 degree 45 degree 30 degree 22.5 degree 11.25 degree 5.625 degree
Elbow Elbow Elbow Elbow Elbow Elbow Elbow
Travel = Offset X 1.052 1.155 1.414 2.000 2.613 5.126 10.187
T = Run or Rise X 3.236 2.000 1.414 1.155 1.082 1.019 1.004
R or R = Offset X 0.325 0.577 1.000 1.732 2.414 5.027 10.158
R or R = Travel X 0.309 0.500 0.707 0.866 0.924 0.980 0.995
Offset = Travel X 0.951 0.866 0.707 0.500 0.383 0.195 0.098
Offset = R or R X 3.078 1.732 1.000 0.577 0.414 0.198 0.098
Note: R or R: Run or Rise T: Travel
Hope this helps... Reference: IPT's Pipe Trades Training Manual By Robert A. Lee One of my favorites for pipe fitting!!! :) :) :)
http://www.pipefitter.com/existing_php/IPT.phpHere's software you can upload to your PDA like palm or similar... This software enables you to do all types of pipe fitting calculations anywhere!!!
http://www.americanpipefitter.com/Take a look at some of the sample calculations this software can do on your PDA:
http://www.americanpipefitter.com/Calculations.htmlIf you do a lot of pipe fitting but are not that good in math, and need the answers to the "calc's" right away then this software is for you!!!
Here's the US Army's plumbing & pipe fitting manual... Scroll down to page 6-5 to 6-7 and you shall find basically the same infor as above and more:
http://www.scribd.com/doc/2513896/Army-fm3-34x471-Plumbing-PipeFitting-and-SewerageHere's the link to the actual .pdf file:
http://www.mydiscounttools.com/estore/articles/plumbing/fm3-34.471.pdfRespectfully,
Henry