Irvin G. Hood, 72, a retired machinist with the Bureau of Public Roads and a resident of the Washington area for more than 30 years, died Friday at Pardee Memorial Hospital in Hendersonville, N.C., after a heart attack.

Mr. Hood was born on a farm in Pettis County, Mo. He was a farmer and then worked for the Missouri Pacific Railroad, where he learned to be a machinist.

He moved to the Washington area in 1933 and went to work for the Naval Gun Factory here. In 1952, he transferred to the Bureau of Public Roads facility in McLean and remained there as a machinist until his retirement in 1964.

Three years later, he moved from his home in McLean to Fort Myers, Fla. In 1975, he moved to the Carolina Village retirement community in Hendersonville.

Mr. Hood was a member of the Trinity United Methodist Church in McLean.

He also was a life member of the McLean Volunteer Fire Department, a past master of Sharon Lodge No. 327 of the Masons and a past patron of Sharon Chapter, No. 63 of the Order of The Eastern Star.

Survivors include his wife, Lorena F., of Hendersonville; one daughter, Lenora H. Evers of McLean; two sons, James W., of Centreville, Va., and Air Force T/Sgt. Harry H., of Mildenhall Air Force Base, England; two brothers, Harley H., of St. Petersburg, Fla., and Marvin L., of Lee's Summit, Mo., and five grandchildren.

The family suggests that expressions of sympathy be in the form of contributions to the Sharon Temple Corp., P.O. Box 115, McLean; to the McLean Volunteer Fire Deoartment, P.O. Bow 291, McLean, or to the Endowment Fund, Carolina Village, 600 Lakewood Rd., Hendersonville, N.C., 28939.