The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 168
Figure 3 is the truss of the Burr Bridge ; in this theupper chord and braces are acted upon by thrust, and thelower chord and posts by tension. Figure 4 is the Howe Truss, without the counter braces ; PRACTICAL MECHANICS. 163 in this also, the upper chord and braces are subjected tothrust, and the… … Figure 5 is a plan of truss sometimes used, the counterrods being omitted ; in this the upper chord and verticalstruts are subjected to thrusts, and the lower chords anddiagonal rods are acted upon by tension. Fig. 5.
Mechanics, Applied
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