GREGORY J.H.

GREGORY J.H. 07.08. 1874 Cambridge MA/USA 18.01. 1937 Baltimore OH/USA John Herbert Gregory obtained in 1895 the degree of civil engineering from the Massachusetts Institute of Technology MIT, Cambridge MA. He was then employed by the Metropolitan Sewage Commission and the Metropolitan Water Board relating to the Wachusett Dam and Aqueduct, under Frederic P. Stearns (1851-1919). He also was associated with the early water purification in the USA. While in the employ with Allen Hazen (1869-1930) he was active on the design and construction of slow sand filter plants so that only after five years after graduation Gregory held a position of high responsibility. Until 1902 he was then assistant engineer of designs on the improvement of the water supply of Philadelphia PA, including the first water filter plants. From 1902 he was division engineer in charge of the 35 km long conduit from Boonton NJ to Jersey City NJ. In 1903 he collaborated with Rudolph Hering (1847-1923) and George W. Fuller (18681934) on a rapid sand filter plant at Milford NJ, the second of its kind in the USA. The most noteworthy work of Gregory was for the Water Department of Columbus OH, which he served for 33 years. From 1904 he was successively design engineer, principal assistant engineer, and engineer in charge. He first designed the first large sewage test station. The treatment station included the largest water-softening plant; the trickling filters were the first large designed in the country. Gregory was awarded the Thomas Fitch Rowland Prize by the American Society of Civil Engineers ASCE for his 1910 paper. From 1920 to 1925 he was in charge of the construction of the O’Shaughnessy Dam and reservoir on Scioto River; his paper was awarded the ASCE James Laurie Prize. From 1926 he served Columbus with the design of relief and separate sewers. He was awarded the Rudolph Hering Medal in 1935 for the related paper. Gregory served for more than 40 years to advance the practice of sanitary engineering. Anonymous (1931). J.H. Gregory: James Laurie Prize. Engineering News-Record 106(4): 164. P Anonymous (1937). Death of John H. Gregory. Engineering News-Record 118(Jan.28): 144. P Anonymous (1937). John H. Gregory. Trans. ASCE 102: 1552-1557. Gregory, J.H. (1910). Improved water and sewage works of Columbus. Trans. ASCE 67: 206-425. Gregory, J.H., Hoover, C.B., Cornell, C.B. (1929). The O’Shaughnessy Dam and reservoir. Trans. ASCE 93: 1428-1492; 1498-1504. Gregory, J.H., Simpson, R.H., Allton, R.A. (1934). Intercepting sewers and storm stand-by tanks at Columbus OH. Trans. ASCE 99: 1295-1339.