D. VAN" JSrOSTBAJSTJ). 



Clarke's Quincy Bridge. 



4to. ClotK $7.50. 



DESCRIPTION OF THE lEON EAILWAY Bridge across the 

 Mississippi Eiver at Quincy, Illinois. By Thomas Curtis Clabke, 

 Chief Engineer. Illustrated with twenty-one lithographed 

 plans. I 



Jllustrations. 



'SSj&tks. — General Plan of Missis- 

 Bippi River at Quincy, showing loca- 

 tion of Bridge. Jla. Greneral Sections 

 of Mississippi River at Quincy, show- 

 ing location of Bridge. 116. General 

 Sections of Mississippi River at Quin- 

 cy, showing location of Bridge. III. 

 General Sections of Mississippi River 

 at Quincy, showing location of Bridge. 

 IV. Plans of Masonry. V. Diagram 

 of Spans, showing the Dimensions, 

 Arrangement of Panels, etc. VI. Two 

 hundred and fifty feet span, and de- 

 tails. VII. Three hundred and sixty 

 feet Pivot Draw. VIII. Details of 

 three hundred and sixty feet Draw. 

 IX. Ice-breakers. Foundations of Piers 

 and Abutments, Water Table, and 



Curve of Deflections. X Founda- 

 tions of Pier 2, in Process of Con- 

 struction. XI. Foundations of Pier 

 3, and its Protection. XII. Founda- 

 tions of Pier 3, in Process of Construc- 

 tion, and Steam Dredge. XIII. Foun- 

 dations of Piers 5 to 18, in Process 

 of Construction. XIV. False "Works, 

 showing Process of Handling and Set- 

 ting Stone. XV. False Works for 

 Raising Iron Work of Superstructure. 

 XVI. Steam Dredge used in Founda- 

 tions 9 to 18. XVII. Single Bucket 

 Dredge used in Foundations of Bay 

 Piers. XVIII. Saws used for Cut- 

 ting Piles under water. XIX. Sand 

 Pump and Concrete Box. XX Mac 

 sonry Travelling Crane. 



Whipple on Bridge Bmlding. 



8vo, Illustrated. Cloth. $400. 



AN ELEMENTAHY AND PRACTICAL TREATISE ON 

 BRIDGE BUILDING. An enlarged and improved edition of 

 the Author's original work. By S. Whipple, C. E., Inventor of 

 the Whipple Bridges, &c. Second Edition. 



The design has been to develop from Fundamental Principles a system easy 

 of comprehension, and such as to enable the attentive reader and student to 

 judge understandingly for himself, as to the relative merits of different plans 

 and combinations, and to adopt for use such as may be most suitable for the 

 cases he may have to deal with. 



It is hoped the work may prove an appropriate Text-Book upon the subject 

 treated of, for the Engineering Student, and a useful manual for the Practio. 

 ing Engineer and Bridge Builder. 



