Answer Happy

Q1. (25%) As shown in Fig. Q1, a simply supported beam with overhang over the support B is supposed to support the characteristic permanent load Gx = 75 kN/m (including the self weight) and the characteristic live load Qx = 55 kN/m. The beam is connected to two adjacent slabs (in the transverse direction), and the beam and the connecting slabs were constructed monolithically. The beams are spaced in the transverse direction at 3.0 m centres with a slab thickness h, = 160 mm. Each support has a width of 420 mm. Assume C30/35 concrete, Grade 500 steel, bw = 325 mm, d = 550 mm, and h = 725 mm. If the compressive reinforcement is needed, it can be assumed that d' = 75 mm (for both sagging and hogging). (a) (9%) Identify the load case which can result in the maximum sagging moment at the mid-span of the span AB. And design the bending reinforcement for this maximum sagging moment. Draw a cross-sectional view for showing the location of the designed bending reinforcement. (b) (8%) Identify the load case which can result in the maximum hogging moment at the support B. And design the bending reinforcement for this maximum hogging moment. Draw a cross-sectional view for showing the location of the designed bending reinforcement (e) (8%) Identify the load case(s) which can result in the maximum shear at the support A. And determine the shear reinforcement and its extent within the span AB to resist this shear force near the support A. B 6.0 m 2.5 m Fig. 01