Handbook of Railroad Construction; For the use of American engineers. / Containing the necessary rules, tables, and formulæ for the location, construction, equipment, and management of railroads, as built in the United States.

by George L. Vose

20 : 49 :: 6000 : 20000

20 : 64 :: 6000 : 25000

20 : 78 :: 6000 : 30000.

The last column has the several weights coming upon the different braces at their several inclinations; to resist which, the scantling might be very small, for compression, but flexure requires larger dimensions.

These braces should be confined laterally and vertically, as they pass each post, but not connected therewith; as this would not permit a free action of the brace, without straining transversely the post.

The length of beam, therefore, in which flexure is to be checked, is the distance between posts in any panel.

In panel No. 1, it will be 25 feet.

In panel No. 2, it will be 18 feet.

In panel No. 3, it will be 17 feet.

In panel No. 4, it will be 16 feet.