ARTiri.C V. 



I -1KB REA< 



IN Fig. 4e is given the influence line for the pier 



R between two non-eontinuoun beam span* / and f 

 From t!i- intlm-hrr HIM-, th<- foruiulaa (5) and (7) ipvr 

 R - Ordinate-load product* in (|g6A - \ff*k + jjbA) 



+^-A*- 



Formula (14) may alao be derived fmm formula (10) 

 tlu ordinatos of thr inllin-nr lim- fur R b*ar the eon- 

 stunt ratio . / to ili.- rorreKpondiiig influence onliiuilfli for 



'l H 



W. the position of thr li\<> load and the value* of /, and /, 

 n'mnmiiiK tixed. 

 Thr 



intituling the value M - f J/i + jr Jf i If t from 



formula (10) in fonnula (16), the result is again formula 



For equal spans, 



^-t-lsoth**-- , . 04a) 



1 ho rate of change of R for a movement di of the 



loading to the left i- 



/ li lilt f / ^ 



. 



