5. Plumbing: 45º Parallel Offset: Using Constants
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Calculating a 45 degree offset piping system / Tradestutor
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Plumber Math: Offsets Part 3 - Rolling Offsets Using 45 Degree Fittings
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1. Plumbing: Parallel Offsets: Introduction
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How to Compute Takeoff, Spool, Center to Center 90, 45 Degrees Elbow Pipefitter
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45 Degree Equal Spread Piping Offset for the construction trades.
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How to Succeed on the Plumbers Math Test, with link to practice exam
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Pipe Trig
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