Philip R. Yeager, 52, a project manager for structural engineering with Sverdrup & Parcel and Associates, Inc., in Silver Spring, died at Commonwealth Doctors Hospital Oct. 3 after a heart attack. He was stricken at his home in Fairfax.

Mr. Yeager was active in youth groups in Northern Virginia and was a trustee of the Congregational Christian Church of Fairfax County. He coached basketball for the Fairfax Police Youth Club, soccer for the Braddock Road Youth Club and baseball for the Fairfax Babe Ruth League.

He was born in Maybrook, N.Y., and graduated from Northeastern University in Boston with a degree in civil engineering. He served in the Army in Korea during the conflict there.

He began his career as a civil engineer in New York. He worked for Howard, Needles, Tammen & Bergendoff there from the 1950s until 1966, when he was transferred to its Alexandria office. He joined Sverdrup & Parcel about 1979 and was in charge of moveable and long-span bridges on the East Coast for the company.

Mr. Yeager was a member of the American Society of Civil Engineering, the Prestressed Concrete Institute and the National Society of Professional Engineers.

Survivors include his wife, Katherine W., and two children, Warren and Nancy, all of Fairfax.