THE DESIGN OF 

 HIGHWAY BRIDGES 



AND THE CALCULATION OF 

 STRESSES IN BRIDGE TRUSSES 



By MILO S. KETCHUM, C.E., M.AM.Soc.C.E. 



Dean of College of Engineering and Professor of Civil Engineering. 

 University of Colorado ; Consulting Engineer 



Cloth, 6^x9 ins., pp. 544+xvi, 77 tables, 300 illustrations in the text 

 and 8 folding plates. Price, $4.00 net, postpaid. 



TABLE OF CONTENTS 



PART I. Stresses in Steel Bridges. Chapter I. Types of Steel Bridges. II. Loads 

 and Weights of Highway Bridges. III. Methods for the Calculation of Stresses in Framed 

 Structures. IV. Stresses in Beams. V. Stresses in Highway Bridge Trusses. VI. 

 Stresses in Railway Bridge Trusses. VII. Stresses in Lateral Systems. VIII. Stresses 

 in Pins; Eccentric and Combined Stresses; Deflection of Trusses; Stresses in Rollers, and 

 Camber. IX. The Solution of 24 Problems in the Calculation of Stresses in Bridge Trusses. 



PART II. The Design of Highway Bridges. Chapter X. Short Span Highway 

 Bridges. XI. High Truss Steel Highway Bridges. XII. Plate Girder Bridges. XIII. 

 Design of Truss Members, XIV. The Details of Highway Bridge Members. XV. The 

 Design of Abutments and Piers. XVI. Stresses in Solid Masonry Arches. XVII. Design 

 of Masonry Bridges and Culverts. XVIII. The Design of Timber and Combination 

 Bridges. XIX. Erection, Estimates of Weight and Cost of Highway Bridges. XX. 

 General Principles of Design of Highway Bridges. 



PART HI. A Problem in Highway Bridge Details. Calculation of Weight and Cost 

 of a i6o-ft. Span Steel Pratt Highway Bridge. The Calculation of the Efficiencies of the 

 Members of a i6o-ft. Span Steel Pin-connected Highway Bridge. 



APPENDIX I. General Specifications for Steel Highway Bridges. 



COMMENTS OF THE PRESS. 



Professor Ketchum has done the profession a real service in presenting to civil en- 

 gineers and students this masterly and complete work on highway bridges. The author 

 has a plain way of getting his ideas before the mind of the reader. Ernest McCollough, in 

 The Contractor, Dec. i, 1908. 



The reputation for practical book writing established by the author in "The Design 

 of Steel Mill Buildings" and "The Design of Walls, Bins and Grain Elevators" is upheld 

 in his most recent work. Altogether we do not know where bridge designers can find 

 elsewhere so much good practical information as is given them in this book. Engineering 

 Contracting, Dec. a, 1908. 



Altogether the work embodies a fortunate blending of the rational with the thoroughly 

 practical. Journal of the Franklin Institute, Jan., 1909. 



McGraw-Hill Book Company, New York 



