Malcolm Pirnie Sr. (February 6, 1889 – February 23, 1967)[1] was an American civil and consulting engineer, pioneer in sanitary engineering, founder of Malcolm Pirnie, Inc., and president of the American Society of Civil Engineers in 1944.
He studied civil engineering at Harvard University, where he obtained his BSc in 1910, and his MA in 1911.
[2] After graduation in 1911 he started his career as assistant engineer at the New York City consulting firm Hazen and Whipple, where in 1916 he became partner and the company was renamed Hazen, Everett & Pirnie.
[1] In 1944 Pirnie served as president of the American Society of Civil Engineers.
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