William Ruprecht Osgood, 82, a retired professor of engineering, died Sunday at Holy Cross Hospital. A resident of Washington for many years, he had lived at Fernwood House in Bethesda for the past two years.

Dr. Osgood was a professor of civil engineering in the school of engineering and architecture at Catholic University from 1960 until retiring in 1969.

From 1955 to 1960, he was head of the department of mechanics at Rensselaer Polytechnic Institute in Troy, N.Y. For five years before that he held the same position at the Illinois Institute of Technology.

Dr. Osgood returned to teaching in 1950 after many years of federal government service.

From 1929 to 1946, he had been a materials engineer with the National Bureau of Standards here. He then served for four years as a mechanical engineer at the Navy Department's David Taylor Model Basin at Carderock.

Born in Cambridge, Mass., Dr. Osgood received a bachelor of arts degree from Harvard University.

He then earned a bachelor of science degree from Massachusetts Institute of Technology and master's and doctoral degrees from the University of Illinois.

He was an instructor at both MIT and the Universiity of Illinois and an assistant professor of structural engineering at Cornell University before entering government service.

Dr. Osgood was the editor of a book, "Residual Stresses in Metals and Metal Construction" and published many technical papers. He had served on two advisory committees of the National Research Council.

He was a fellow of the American Society of Mechanical Engineers, the American Society of Civil Engineers, the Washington Academy of Sciences and the American Association for the Advancement of Science.

He belonged to the Society for Experimental Stress Analysis, the Philosophical Society of Washington and the Cosmos Club.

There are no immediate survivors.

It is suggested that expressions of sympathy may be in the form of contributions to the Population Institute or Zero Population Growth, Inc.