Joseph B. Danzansky, chairman of the board of Giant Food Inc., has accepted the post of general campaign chairman for the 1978 United Way Campaign.

He succeeds Samuel F. Bonsack, president of the Chesapeake and Potomac Telephone Company. At the annual United Way awards lucheon recently, Bonsack cited "the committment and dedication of thousand of volunteers and the generosity of the people of the national capital area" for making the 1977 campaign "the most successful drive in the history of area fundraising." Under Bonsack's leadership, the 1977 campaign raised $19,288,559 - exceeding the 1976 total by more than $2 million.

The 1978 campaign will mark the third time in 10 years that Danzansky has led the area's largest human services fundraising appeal. He chaired both the 1969 and 1970 United Givers Fund campaigns.

A leading civic volunteer for years, Danzansky has been chairman of the United Way's Campaign Advisory Committee for the past four years. He was president of the Washington Board of Trade in 1971 and 1976 - the only person ever to be president for two terms.

This year is the 50th anniversary of united giving in the Washington area, which began with the Community Chest in 1928.