John E. Martin is an industry consultant and former vice president of national account sales for Anvil International. He can be reached at jemassociates1944@gmail.com or 303-588-9806.

The roots of the Online Piping and Usage Specification resource

The original hard copy “guideline” manual would eventually become the Online Piping and Usage Specification resource, or OPUS.

John E. Martin

March 29, 2018

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MCAA’s Online Piping and Usage Specification resource was designed by tradespeople, for tradespeople.

Plumbing and Mechanical

2019 December

Check out the December 2019 edition of Plumbing & Mechanical: 2020 B.I.G. Book, John Siegenthaler on geothermal water-to-water heat pump system design and installation, maximizing efficiency on small-diameter piping projects and much more!

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John E. Martin

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The roots of the Online Piping and Usage Specification resource

Plumbing and Mechanical

2019 December