I.l\ l-l.o 



Note that the coefficients of M 4 and M e in this formula 

 are the same as the coefficients for 3/ 4 and A/, in formula (24). 



The influence line for the counter-tension in a vertical 

 post is shown in Fig. 10. For the usual case, the loading 

 advances beyond the panel but not beyond the end of the 

 span. Therefore M\ is equal to zero, so that 



Sjtlirnt Point* 



M HIM 



-L-np. 



(2) !t 



1,1., /,.!/! 



p 'n 



,.!/! 

 ' 



'ds-c 





I .... 10. 



26 



where K and Af stand for the corresponding terms in the 

 parentheses. In order that T be a maximum the live load 

 must advance beyond the portion for the maximum tension 

 S 2 until the tension as computed by formula (25) becomes 

 equal to the dead-load compression in this same member. 

 For this po>iti<.n of the live load, the value of T ifl then 

 computed by using formula (26). It mny !>< not<<l that 



