3. As shown in Fig. 3, a cantilever beam is under uniformly distributed dead load WDL = 1.2k/ft (without the self-weight of the beam) and a concentrated live load PLL= 10 kips. Compute M. and M. of this beam, and check if M, exceeds M, or not. (Use f' = 4000 psi, Grade 60 for steel) 2.5" 6 No. 8 15.5" PLL= 10 kips WDL 1.2 k/ft + self-weight 30" Fig. 3 (a) Beam section 10ft Fig. 3 (b) A cantilever beam