A.M. Neville is a Civil Engineering Consultant. He is a Past Vice-President of the Royal Academy of Engineering and a former Principal and Vice Chancellor of the University of Dundee. He has many years' experience of teaching, research and consultancy in Civil and Structural Engineering in Europe and North America, and the Far East. He has numerous awards and medals, and is an Honorary Member of the American Concrete Institute, the British Concrete Society and the Brazilian Concrete Institute.J.J. Brooks is a Consultant, formerly a Senior Lecturer in Civil Engineering Materials and Director of Postgraduate Studies in the School of Civil Engineering at the University of Leeds. He is a member of the American Concrete Institute and a Fellow of the International Masonry Society.Both are co-authors of the major reference work Creep of Plain and Structural Concrete (Construction Press, 1983).