dfDa1.com
About dfDa1.com
Donald F. Dickerson Associates, Inc. (DFDA) has been active in the Engineering, Construction and Building Codes since 1944. The Firm is a member of the National and California Professional Engineer Societies, the American Society of Heating, Refrigeration and Air Conditioning Engineers, The International Association of Plumbing and Mechanical Officials, The National Fire Protection Association and the American National Standards Institute. Mr. Donald F.
