i.r. 



,. /- tn I 



* - 



! 



5 .. o 



M 



the position of the live load 

 "1 the lin the span, the general formula far 



II- in actual , ,, usually not 



to ad\.: ..adnm beyond the left end of the span in 



get a maxiiiiuin value ,,i .S. The unual formula 

 "ill 'iitain the term Jtft, wioe this will U- 



thoa, 



[naflmoob a- thr boriaoolaj component of the dim 

 in an inclined top < h.nl member or end port equafe the 

 stress S* in a rorn*|*nnliim lower chord member, the stiws 

 6 f in any top chord member or end post may be found by 



S. - . S> (22) 



In \"\n. 8 is shown tin- influeoee line for the 

 in any \.-niral |Mt. Tin* influence ordinates 



l.\ taking moments alxmt tin- mterwctioii of the 

 and 1.. \\.-r chord members which are cut by the 

 >n. The algebra i \aluo of these ordinates are 

 formed l>\ use of easily discovered relations betwert 

 iigle. The slopes and coefficient* are then 

 in the UM The influence line indicate* that 



the live load should fyood the panH 



p for a maximum compni,,n. ami fr thi* n-n-.n U, and 

 ro for the '. e. The numerical value of 



