Question

20 ft+20 ft+20 ft 20 ft Problems 16.46 BG, CF,FG

determine max and min axial forces in member FG of the truss given. uniform dead load of 1.5 klf, a moving uniform load of 1.5 klf a moving concentrted load of 10k and impact factor of 15%

(ignore the written in BC, CF, FG only looking at force of FG. ans: N_FG-min = 85.2k and N_FG-max = 199,5k)

Answer 1

,0 1B a= 20 , 56

Sechon FG= 2.85 VE (T load behoeen tE, conside he le of Fri = 2.85 E (T)

2.35 2.85 - h 2.85 2o 40

Maximum Sk 1-42 load s always be in he beam irself Desdlcad Ye 1-15 umoving Point load Max ox FFo Min,Te keep he moviną loads ends, Theve Fue only dead load achng ont e nlence line diag xam avea

-42 Bo ft Min =사 × 80 x 1.42 x 1.5 + (1.15x10 xo) +