StubCalcStubCalc Bend / Free calculators
3-point saddle calculator
Enter the height of the pipe or beam you are crossing and the distance from the pipe end to its center. You get the center mark and both outer marks, which bender mark to use and the bend order.
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Every bend type, your exact bender, saved jobs and a bend sheet to share. Works offline on the job. StubCalc Bend is in beta now.
How a 3-point saddle is laid out
A 3-point saddle crosses a round obstruction with one center bend and two half-angle bends: 45° in the center with 22.5° on each side, or 60° with 30° sides.
With a 45° center, move the center mark 3/16" per inch of obstruction height past the center of the obstruction (shrink), and put the outer marks 2-1/2" per inch of height on each side of it. With a 60° center it is 1/4" per inch and 2" per inch.
Bend the center on the rim notch, then roll 180° and bend each outer mark on the arrow with the hook toward the center.
More free calculators
The five free bends from StubCalc Bend, right in your browser.
Check marks against your bender; verify with local code. The calculator uses a generic EMT hand bender. Take-up and multipliers differ between makers, so compare with the numbers on your shoe. Not affiliated with NFPA or any bender maker.