4 point loads 8,15,15 and 10KN have centre to centre spacing of 2m between conjugative loads and they travel a girder of 30m span from left to right with 10KN loading. Calculate the max B.M and S.F at 8m from left support.

Subject : Structural Analysis 1

Topic : Influence line diagram.

Difficulty : High

1) Maximum (+ve) S.F.:

$I^{st}$ Trial:-

Max +ve S.F. @ C:-

$S.F_C=8\times {\frac{22}{30}} +15\times \frac{20}{30} +15\times \frac{18}{30} + 10\times \frac{16}{30}$

$S.F_C.=30.2KN$