Includes bibliographical references (p.C1-C111).Preface / C.P. Siess -- Section A. Progress report on analytical studies of the ultimate flexural capacity of prestressed concrete beams / by D.F. Billet and J.H. Appleton -- Section B. Progress report on tests of prestressed concrete beams / J.H. Appleton, D.F. Billet, E.M. Zwoyer -- Section C. Bibliography on prestressed concrete / by E.M. Zwoyer and I.M. Viest
