The apprentice, or First book for mechanics, machinists, and engineers (1860)
Byrne, Oliver · New York, P. J. Cozans · leaf 168
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. … Upon a comparison of these plans it will be discoveredtliat the variations between the Burr Truss, Fig. 3, and theHowe Truss, Fig. 4, consists in the use of vertical rods andDcaring blocks in the latter, instead of vertical posts in theformer, both having precisely the same duty to perform. 164…
Mechanics, Applied
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