David Austen Moorman, 64, a retired truck driver who had belonged to Teamster Local No. 639 in Washington, died of cancer Sunday at the Washington Adventist Hospital in Takoma Park.

He had driven trucks for the old Howard Concrete Co. in Washington for 20 years before retiring in the 1960s.

Mrs. Moorman was a native of Jefferson County, W. Va., and served in the Army during World War II. After the war he was a member of the Montgomery County police department for a short time before joining Howard Concrete.

He had lived in this area since 1940 and was a resident of Riverdale at the time of his death.

His marriages to the former Alice Pierce and the former Estelle Derek ended in divorce.

Survivors include his wife, Linda F. M. Moorman, of Riverdale; three children by his first marriage, David, of Takoma Park, Jimmy, of Texas, and Nancy Senachik of Takoma Park; five children by his second marriage, Madge Beck of Waldorf, David of Falls Church, Leroy Sr., of Camp Springs, Estelle O'Shields of Waldorf, and Lois King of Tennessee; six children by his third marriage, Sam, David, Linda Lee, Toni, Howard, and Pat, all of Riverdale; three brothers, James of Riverdale, Calvin of Oxon Hill, and Herbert, of Kentland, Md.; a sister, Celestine Shirley of Oxon Hill; 27 grandchildren, and one great grandchild.