Question

(Influence Line Truss) Problem 3. Using STATICS DRAW the INFLUENCE LINES for the FORCE IN MEMBERS FG. SHOW ALL VALUES. LABEL ALL POINTS. MAGNITUDES, AND DISTANCES, Assume the support 'A' is a pin, and 'E is a roller. (6 points) FREE BODY DIAGRAMS & CALCULATIONS H 15 ft A B C D 200 | 2004-2005-2011 IL FFO What is max IL FFG TT T Arial 3 (12pt) > > Path: P Words:0 OLIETION 16 points Save

Answer 1

solution :- X F + T 15ft EX An Ey X204 20 * 20 *20 X txt Let Ax, Ay be the horizontal and vertical Exns at I and vertical reaction at & respectuelly Assuning unit load at distance x from A support {fx=0 Ax=0 SM@A=0 7 Eyx80 - 1 xx=0 Ey=%0 {Fy zo 7 Aytey - 150 7 Ay= 80-te cut section xx, assung tension in cut members 1) when unt load is at A (x=0) Ey = % SM@ c-o fos Seton right of xx F&q X15 =0 X15-0 7 Fry=0 2 unt load at B (x=20) I Ey= 20 4

Answer 2

F G H E B с D 2016-2017 -20 ft -2 ft

Influence line Diagram (ILD) for force in FG Cut the section at 0-0 is in between A&B When force FBD 15) FBc C 201 201 que equilibrium equations EME=0 FGFX 15 + 40 *VE-O FGF When face is in between C&E FBD - VE & FIG TUA B Emc=0 с FBC FFGX 15 +40 X VA=0 FFG & VA ILD for FGE yox?o=} A o ممال & X40=4 348 ILD for force in FG B D E o dim 813 ) = compression