Question

G3 Design the necessary shear reinforcement Gf needed) in the form of U-stirrups (two legs) for the rectan- gular section shown in Fig. 5.24 using f3ksi (21 MPa) and f60ksi (420 MP). a. V-55 K (245 kN) h V-110K (490 KN) V-144 K ( 640 kN) 27.5 Problem 5.3. Figure 5.24

Answer 1

Giren Pata: 97,5" 20 f'(= 3ksi fy - 60 ksi :... 1811 . #3 Stinue fra e fsve + $$Vs pvc a d affc x bw xd = 0.1542x 53000 x18x27.5 : = 40.66 Kips. veis dve . coesign stirrups) & Us .= . ¢ Aufy xd d Au fyd S : Wu-ove SE 0.75*270.11 x 60 x 27.5 - 55 40.66 19" s must be sad < 24" 18€ 27.5 = 241

so provide igh spacing , ( 215 ) © Vu= 110 k. ф, - ф еv-Sad 0.75*2*0.11 x604 275 : 110 - 10.66 : 5: 3.92611 so provide .: 3.751 Bpacing ( better) 0 vа - чак o us a ¢ Arfyd s = 0.75* 2x0.11x60x 27.5 14u - 40.66 Sa. 2863" : . so provide : 2.5" spacing cbethor. Purpose)