Andrew Gutierrez, 76, a retired D.C. sanitary engineer who had also worked for the departments of the Army and the Navy, died May 1 at Alexandria Hospital after a heart attack.

A native of Santiago, Cuba, Mr. Cutierrez came to this country in 1922 to attend college. In 1930, he earned a bachelor's degree in civil engineering from the University of North Carolina at Chapel Hill. He then worked for the state of North Carolina for several years as a sanitary engineer.

In 1951, he moved to this area and went to work at the Army's old Engineer Research and Development Laboratories at Fort Belvoir, now the Mobility Equipment, Research and Development Command (MEREDCOM), in the sanitary engineering branch.

From 1954 to 1967, when he joined the old D.C. Department of Sanitary Engineering, he was a sanitary engineer for the Navy Department.

He then was chief of secondary treatment at the Blue Plains sewage treatment plant here, which treats about two-thirds of the area's waste, until his retirement in 1973.

Mr. Gutierrez lived in Alexandria.

Survivors include his wife, the former Margaret Nesbitt, and two daughters, Rosita Elwell and Linda Laura Felton, all of Alexandria; a daughter, Margaret Lancaster of New Carrollton; two sons, Andrew N., of Joseph A., both of Winston-Salem, N.C.; two sisters, Emma Tio and Esther Cruz, both of Gardena, Calif., 11 grandchildren and five great-grandchildren.

The family suggests that expressions of sympathy be in the form of contributions in his name to the Carolina Annual Giving, Class of 1930, University of North Carolina at Chepel Hill.