Bernard T. Reavis Sr., 52, a staff assistant in the social rehabilitation administration of the D.C. Department of Human Resources, died at Providence Hospital Tuesday following a heart attack.

Mr. Reavis was a lifelong resident of Washington. He graduated from Cardozo High School and played on its football, baseball and track teams. He served in the Coast Guard in World War II and later attended Howard and George Washington universities.

He went to work for the Department of Labor in 1948. In 1965, he switched to the city's Department of Human Resources, where he coordinated programs to provide employment opportunities for teen-agers and young adults.

Mr. Reavis was a member of St. Cyprian's Church in Washington. He was active in its Catholic Youth Organization, counseling and coaching the youth of the parish. He was vice president of St. Cyprian's Athletic Association.

He also was a member of executive committee of the Catholic Youth Organization for the Archdiocese of Washington.

Survivors include his wife, Alfreda, of the home in Washington; four daughters, Bernarda McCromick, of Landover, Beryl Stephenson, of Forestville, Md., and Benita and Bridget, of the home; two sons, Bernard Jr. and Byron, also of the home, and four grandchildren.