BSR 560 Structural Design Assignment 2 Question UTM: RC Beam A2-B2 Load Analysis, Shear Force

BSR 560 Assignment 2 Question

A floor plan of a reinforced concrete (RC) framed building is shown in Figure 1.
Reinforced concrete slabs spanning as indicated are supported by RC beams AB. Beam A2-B2 carry two columns of 60 KN at C1 and 40 KN at C2.

Information Given:

RC Slab

Thickness of reinforced concrete slab = 200 mm
Imposed load for slab = 3.0 kN/m2
Density of reinforce concrete = 24 kN/m3

RC Beam

• Characteristic strength of concrete, fcu = 25 N/mm2 
• Characteristic strength of reinforcement, fy = 460 N/mm2
• Diameter of main reinforcement = 25 mm
• Diameter of stirrup = 8 mm
• Size of beam = 200 mm x 450 mm
• Density of reinforce concrete = 24 kN/m3
• Concrete cover = 20 mm
• Find the design loads on the beam A2-B2. (10 marks)
• Find the reaction at the beam A2-B2 due to the system of loading on the beam. (5 marks)
• Draw the shear force and bending moment diagram for beam A2-B2. (10 marks)
• By using the limit state design method, design a suitable reinforced concrete beam A2-B2 to resist the maximum bending moment obtained. (15 marks)
• Choose a suitable size of shear reinforcement for the beam (A2-B2) if fyvertical = 250 N/mm2 and fou = 30 N/mm2. (10 marks)