28 

 or 



INFLUENCE DIAGRAMS 



W tan 3 = Wi tan Oi +W 2 tan 2 . . . (62) 



Substituting the values of the tangents 



where W is the total load on the span. 



Criterion. ~= 

 Is 



. 

 sd 



Tan 0i = 1. Tan 2 = r- Tan Os 



FIG. 19. 



Vertical of Simple Truss Having Center of Moments between 

 the Supports. The vertical member UL, Fig. 19, has 

 its center of moments between the supports. The moment 

 influence diagram is constructed according to the general 

 rule and is the shaded area in Fig. 19. This diagram 



