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3. A cantilever beam shown in the figure supports a uniform service (unfactored) dead load of 1 kip/ft plus its own dead load and a concentrated service (unfactored) live load

of 12 kips as shown. The concrete strength is 4000 psi and the steel is Grade 60. Use load and strength reduction factors from ACI 318-14 Chapters 5 and 21. Part (b) of the figures hows the end-section of the beam. a) Compute the factored moment Mu b) Determine øMn and show that it is greater than Mu

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