DOUBLE INTERSECTION TRUSSES 



33 



two diagrams in the manner explained for the Whipple 

 truss the influence diagram shown by the shaded area is 

 obtained. 



FIG. 22. 



FIG. 23. 



The position of wheel loads producing the maximum 

 moment is found by trial. 



Bottom Chord of Sub-divided Double Triangular Truss. 

 The bottom chord member L 4 L 6 , Fig. 24 is a part of the 



