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Piping Base Elbow Layout Calculator is a iPhone app that provides the fitter with the points to make an accurate cut (fish mouth, cope, etc) for piping (base pipe cylinder to elbow radius) intersections. This app is intended to be used by fitters, welders, fabricators, or anyone who needs to join a metal cylinder at an elbow.

Are you still carrying that blue book around? Confused about how to layout cut lines for joining a piece of pipe to an elbow? If you are a pipe fabricator, welder, or fitter who needs to make perfect elbow base support cuts, then this app is for you. Forget books, calculators, compasses, ancient saddle layout procedures, laptops, expensive CAD programs, mathematics or internet access to figure out how to make that perfect base ell joint.

Piping Base Elbow Layout Calculator is easy. Piping Base Elbow Layout Calculator provides the offset layout dimensions for that perfect pipe joint. This calculator works with any size pipe, any size elbow of any radius, and any wall thickness of pipe. User enters: main pipe outside diameter, base support diameter, wall thickness (this app considers wall thickness, you don't want to leave too much metal, or take too much off) and elbow or bend radius. The calculator does the rest.

The calculator will provide dimensions for three different configurations: CENTER (base support), TOP (dummy leg), or BOTTOM (dummy leg).

This calculator immediately produces an ordinate table of the offsets. The beauty of this app is that it also produces full size pattern templates, so you don't have to measure and layout all of the work points. Now you can print out your pipe pattern templates for any size and any angle intersection. This version outputs patterns configured for an 8.5 X 11 (everyone has access to one of these), 11 X 17, and 24 X 36 printer sizes. So with this app and a 8.5 X 11 printer, the user can still produce any size pipe coping pattern.

The calculator is very versatile. Presently input and output is US based imperial and/or metric. Output is feet, or feet and inches, decimal or fractions (to 1/32").

User can control how much cut line accuracy he/she wants by setting how many control points are desired (infinite amount, user can get 8 control points, i.e. every 45 degrees or 360 control points, i.e every degree, or more). Most books only give 8 or 16 control points. This app allows an infinite amount. For example, a 2" pipe needs fewer control points than a 48".

What’s New

Version 4.0.3

Revised bug (was not showing angles)

Ratings and Reviews

2.3 out of 5
3 Ratings

3 Ratings

marsh.iron ,

Good concept, lacking features.

Considering this is used in aiding template development I feel you should include the ability to generate the template as well, waste of 7$ for anyone interested.

Monikamm83 ,

Does not compute

This app is terrible. Ordinates given do no even make a symmetrical wrap around. All attempts at making a template using this app failed. Went back to my 1000 ordinates book and also found a much better app that worked great. Please do not waste your money as you will just be disappointed as I am.

GrimnerTheMad ,

Great App!

I’m a Journeyman Pipefitter and a construction supervisor. I forgot my Red Book and my foreman didn’t have his 1001 Ordinance book. We downloaded this app and had a template built in 15 minutes. Saved us about 2 hours on a Saturday. Paid for itself 10x over with the first use.
I recommend this app for experienced tradesmen who are already familiar with template development. If you haven’t done this work before, take the time to watch a YouTube video or two.
Again, great app!


Jean-Paul Lanaux
1.4 MB

Requires iOS 12.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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