Download Download Hi-Res version
1536 x 762 (0k )
Roller Bed of a Bridge Girder
Roller Bed of a Bridge Girder The roller bed of a girder of the Kuilenburg bridge of 490 ft. span. It will be seen that the girder directly rests on a cylindrical pin or rocker so placed as to distribute the load uniformly to all the rollers. The pressure on the rollers is limited to about p = 600 d in lb per in. length of roller, where d is the diameter of the roller in inches.
Source: 1911 EB, Vol. 4, Page 538
Other images in this category...
Cylinder, Charing Cross Bridge

(Click on image for more detail, or to download a higher-quality version.)

Cylinder, Charing Cross Bridge
Cylinder, Charing Cross Bridge
Widnes and Runcorn Transporter Bridge

(Click on image for more detail, or to download a higher-quality version.)

Widnes and Runcorn Transporter Bridge
Widnes and Runcorn Transporter Bridge
Niagara Falls and Clifton Bridge

(Click on image for more detail, or to download a higher-quality version.)

Niagara Falls and Clifton Bridge
Niagara Falls and Clifton Bridge
Douro Viaduct

(Click on image for more detail, or to download a higher-quality version.)

Douro Viaduct
Douro Viaduct
Viaur Viaduct

(Click on image for more detail, or to download a higher-quality version.)

Viaur Viaduct
Viaur Viaduct
St Louis Bridge

(Click on image for more detail, or to download a higher-quality version.)

St Louis Bridge
St Louis Bridge
Coalbrookdale Bridge : The first iron bridge erected was constructed by John Wilkinson (1728-1808) and Abraham Darby (1750-1791) in 1773-1779 at Coalbrookdale over the Severn. It had five cast iron arched ribs with a centre span of 100 ft. This curious bridge is still in use. Sir B. Baker stated that it had required patching for ninety years, because the arch and t...

(Click on image for more detail, or to download a higher-quality version.)

Coalbrookdale Bridge
Coalbrookdale Bridge
Jubilee Bridge over the Hugli : Designed by Sir Bradford Leslie, a cantilever bridge. The girders are of the Whipple Murphy type, but with curved top booms. The bridge carries a double line of railway, between the main girders. The central double cantilever is 360 ft. long. The two side span girders are 420 ft. long. The cantilever rests on two river piers 120 ft. apart. ce...

(Click on image for more detail, or to download a higher-quality version.)

Jubilee Bridge over the Hugli
Jubilee Bridge over the Hugli
All of these images are completely free and may be used for any purpose, in whole or in part, royalty-free, without the need to give credit to their authors, under the laws of the United States. They come from old books whose copyright has expired in the U.S. (like the 1911 Encyclopedia Britannica) and from U.S. Government web sites.

No copyright. No rights reserved. All images and text are public domain under the laws of the United States. No warranty nor guarantee is given as to the accuracy of any of this information or imagery, nor for it's suitability for any purpose. Use at your own risk.
(Script last modified Thursday, the 29th of July, 2010 at 5:14am)