Question

1. A beam is loaded as shown with concentrated loads of F1 = 100 kip and F2-200 kip. A distributed load starts at a maximum value at the end of the beam at wo 120 lblft and decreases to zero. The overall length of the beam is L1 24 ft, with L2 12 ft and L3 6 ft. Determine What is the maximum shear in the beam? a. b. What is the maximum bending moment in the beam? If a W21x44 is selected, what is the maximum bending stress in the beam? Ifa W21x44 is selected, what is the maximum shearing stress in the beam? c. d. Wo F1 2

Answer 1

8 (fオ f60 사 hear ,mkir 200 Kip RAtRG 300 12 3600+,200 + 288 Bx24 o 200.12 Kif RA ะ 300.72-200.12 Ynt 200 2o

M20012 Mo 200 22 Kir-fr 6200 12 スー Vx 200 12 200o t 200 (X-6) -200.12ス:0 Mn = 200-12X-200 (M*) Mc 200-12x12 -20o (ra-) Tn 200 12 (X-2) x 120, 2. "X + 200 גון -200-100 1000 5(2-12),99.88 Vy o00

c.. SC 12-12).99.88 SC12), 9988 12 U0 3 /boox 12 Mc=1200 12 (12)-200 ( t2-)-100(12-13 L0 o00 -12 0 0-12(24)-200く29.4)-lob(29-12) "A 1000く24-12)"(2X24+12) 3 YS0 2.88-3600-1200-s (2) 3 y80288-3600-1200-14. y Manu

dl y= -1.83 12 b d =(1.75) (3 67 2 (I 15)(311) = 1.Sx 31.16 mum bundi