De Pontibus: A Pocket-book for Bridge EngineersThis manual on bridge engineering does not cover suspension bridges, as the long spans involved need specifications working out case by case. |
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Common terms and phrases
adopted anchor-arms anchorages angles arch assumed bascule bridges base-line bearing bending bending moment bolts bottom chords bracing caissons cantilever bridge Cantilever-arm cent central planes Chapter columns connected Contractor cost cross-girders curves dead load diagonals diameter distance drawbridges drawings drum East Omaha economic effect elevated railroads end of span Engineer erection eye-bars falsework feet flanges floor floor-beams greatest Highway Bridges horizontal impact inch inspection joists lacing lateral system less lineal foot live load longitudinal girders machinery main diagonals main members masonry metal-work method open-webbed panel points pedestals piers piles pin-connected plate girders pounds practicable Pratt trusses Principle proper properly proportioned rail Railroad Structures railway rigidity rivets rollers span length Specifications for Railroad splices stiffened strength Stresses due stringers struts superelevation suspended span sway-bracing tests thickness timber tion top chords tower track transverse trestles trusses and laterals vertical weight of metal wind load wind-pressure
Popular passages
Page 247 - Material which is to be used without annealing or further treatment shall be tested in the condition in which it comes from the rolls. When material is to be annealed, or otherwise treated before use, the specimens for tensile tests representing such material shall be cut from properly annealed or similarly treated short lengths of the full section of the bar. 10. At least one tensile and one bending test shall be made from each melt of steel as rolled. In case steel differing j£-in. and more in...
Page 402 - Instruments and their adjustments, Strength of Materials, Masonry, Principles of Wooden and Iron Roof and Bridge Trusses, Stone Bridges and Culverts, Trestles, Pillars, Suspension Bridges, Dams, Railroads, Turnouts, Turning Platforms, Water Stations, Cost of Earthwork, Foundations, Retaining Walls, etc., etc., etc.
Page 262 - The contractor shall commence his work at such points as the engineer may direct, and shall conform to his directions as to the order of time in which the different...
Page 15 - The most perfect system of rules to insure success must be interpreted upon the broad grounds of professional intelligence and common sense.
Page 85 - You will also read there that we are fully aware of the fact that there is still a great deal to be learned about the treatment of schizophrenics.
Page 169 - The flanges of plate girders shall be connected to the web with a sufficient number of rivets to transfer the total shear at any point in a distance equal to the effective depth of the girder at that point combined with any load that is applied directly on the flange. The wheel loads where the ties rest on the flanges shall be assumed to be distributed over three ties.
Page 401 - THE RAILROAD SPIRAL. The Theory of the Compound Transition Curve reduced to Practical Formula and Rules for Application in Field Work, with Complete Tables of Deflections and Ordinates for five hundred Spirals. By Wm. H. Searles, CE, author of "Field Engineering,
Page 258 - ... of such equal length that, upon being piled on each other, the pins shall pass through the holes at both ends at the same time without driving.
Page 261 - All pins and small parts must be securely boxed and the boxes plainly marked, The weights of large pieces must be marked on them. The invoices shall state...
Page 167 - The flange plates of all girders must be limited in width so as not to extend beyond the outer lines of rivets connecting them with the angles, more than five inches or more than eight times the thickness of the first plate. Where two or more plates are used on the flanges, they shall either be of equal thickness or shall decrease in thickness outward from the angles.
Bibliographic information
| Title | De Pontibus: A Pocket-book for Bridge Engineers Online access with purchase: ICE Virtual Library |
| Author | John Alexander Low Waddell |
| Publisher | J. Wiley & sons, 1898 |
| Original from | the University of Wisconsin - Madison |
| Digitized | Jul 2, 2007 |
| Length | 403 pages |
| Export Citation | BiBTeX EndNote RefMan |