Worker Compressed Air Tunnel, New York City, 1929-1932. Assistant soils mechanics laboratory Massachusetts Institute Technology, 1932-1934. Chief soils mechanics laboratory Muskingum Dams, O., 1934-1937.
Chief soils mechanics laboratory Corps. Engineers, Pittsburgh, 1937-1941, director Ohio River div. labs., 1941-1951, chief special engineering branch research and development Office Chief Engineers, from 1951. Construction engineering dams, airfields, foundations.
Lecturer soil mechanics Carnegie Institute Technology, 1938-1939. Guest lecturer University of Illinois, from 1949. Lecturer professor George Washington University, 1955.