 That as it has appeared that the effect of velocity communicated to a load is to increase the deflection that it would produce if set at rest upon the bridge; also that the dynamical increase in bridges of less than 40 feet in length is of sufficient...  Elementary Applied Mechanics - Page 157by Thomas Alexander - 1916 - 512 pagesFull view - About this book
 | William Laxton - Architecture - 1850 - 452 pages
...case exceed one-sixth of the weight which would break the beam when laid on at rest in the centre. That as it has appeared that the effect of velocity...the greatest load to which the bridge is subject. Lastly, the power of a beam to resist impact varies with the mass of the beam, the striking body being... | |
 | Industrial arts - 1850 - 560 pages
...increase in bridges of less than 40 feet in length is of sufficient importance to demand attention, — may even for lengths of 20 feet become more than onehalf...the greatest load to which the bridge is subject. Lastly ; the power of a beam to resist impact varies with the mass of the beam, the striking body being... | |
 | George Drysdale Dempsey - Bridges, Iron and steel - 1850 - 72 pages
...ratio of the increased deflection to the statical deflection, diminishes as the length of the bridge is become more than one-half of the statical deflection...the greatest load to which the bridge is subject. For the method of calculating this increased deflection, we beg to refer to Appendix B. " Lastly :... | |
 | Perry Fairfax Nursey - Industrial arts - 1850 - 548 pages
...but can be iliminiehed by increasing the stiffness of the bridge, — it is advisable that, for tlmrt bridges especially, the increased deflection should...considered as the greatest load to which the bridge is «ubject. Lastly ; the power of a beam to resist impact varies with the mass of the beam, the striking... | |
 | Industrial arts - 1851 - 474 pages
...importance to demand attention, and may, even for lengths of twenty feet, become more than one half of the statical deflection at high velocities, but...the greatest load to which the bridge is subject. Lastly, the power of a beam to resist impact varies with the mass of the beam, the striking body beinjj... | |
 | Industrial arts - 1851 - 470 pages
...importance to demand attention, and may, even for lengths of twenty feet, become more than one half of the statical deflection at high velocities, but...strength of the structure, be considered as the greatest load.to which the bridge is subject. Lastly, the power of a beam to resist impact varies with the mass... | |
 | George Rowdon Burnell - Bridges - 1853 - 436 pages
...no case exceed onesixth of the weight which would break the beam when laid on at rest in the centre. That as it has appeared that the effect of velocity...the greatest load to which the bridge is subject. For the method of calculating this increased deflection we beg to refer to Appendix B *. Lastly, the... | |
 | Bindon Blood Stoney - Girders - 1869 - 370 pages
...conclusions of the Commissioners, as given at p. xviii. of their report, is as follows: — " That it has appeared that the effect of velocity communicated...structure, be considered as the greatest load to which tho bridge is subject." 459. Effect of centrlfagal force. — Centrifugal force produces a very slight... | |
 | Bindon Blood Stoney - Girders - 1869 - 378 pages
...would produce if set at rest upon the bridge ; also that * Report, p. xiv. 't Report, A pp., p. 412. the dynamical increase in bridges of less than 40...the greatest load to which the bridge is subject." 459. Effect of centrifugal force. — Centrifugal force produces a very slight but appreciable increase... | |
 | Bindon Blood Stoney - Girders - 1873 - 686 pages
...The conclusions of the Commissioners, as given at p. xviii. of their report, is as follows : — " That as it has appeared that the effect of velocity...the greatest load to which the bridge is subject." 455. Effect of centrifugal force. — Centrifugal force produces a very slight but appreciable increase... | |
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