QUESTION 1 (22 marks) (a) The beam of an office building detailed in Fig. la is to carry the uniformly distributed live load, wa, as shown, in addition to its own weight. The shape and dimensions of the beam cross section and the reinforcement details are given in Fig. 1b. Taking fe= 40 MPa and using unit weight of reinforced concrete = 24 kN/m, determine the maximum 'we' allowed on the beam, using clauses in AS3600-2018. (14 marks) Wq (kN/m) A 48mm 12m Fig. Ia 1200mm 3 N32 100mm 500mm B 400mm Fig. 1b (b) For the beam detailed in Question 1(a), with a live load wa 8kN/m and the dead load as in part a), determine if the design satisfies the Australian Standard (AS3600-2018) minimum effective depth (dmin) requirement for total deflection? (8 marks)