13. For the beam section as shown, assume aggregate size = 25mm, and cover to reinforcement -40 mm, the effective depth is: 2732 4140 a) 492 mm b) 488 mm c) 509 mm 14. For the concrete section as shown, assume fcu = 40 N/mm, the (ultimate) shear capacity of concrete v is: 250 500 2740 a) 0.798 N/mm b) 0.954 N/mm c) 1009 N/mm 8