GRAPHIC STATICS 



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truss. Such happenings are common in engineering. Men educated 

 in mathematics and applied mechanics, when set to solve a problem, 

 are apt to solve it in pretty much the same way, although separated 



Fig. 130. Fink Truss with Cambered Tie Rod, Load on Upper Chord. 



by oceans and continents and perhaps ignorant each of the other. 

 Patent attorneys say that certain patents are applied for at about 

 the same time by several men, the one first making an application 

 receiving the patent, and the others are left with a firm belief that 

 some one must have told him of their work. 



The truss with the cambered tie rod and diagonal, instead of 

 vertical, ties is treated like the truss in Fig. 129, but the diagonal 

 ties meet as shown at a point on the horizontal center line. 



Fig. 131. Truss with Load on Upper and Lower Chords. 



In Fig. 131 is shown a truss with loads on the lower chord as 

 well as on the upper chord. First the loads on the upper chord 

 are laid off on the vertical load line. The loads on the lower 



