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A 12 m simply supported beam is provided by an additional support at mid span. The beam has a width of b = 300 mm and a total depth h = 450 mm. It is reinforced with 4 -25 mm diameter bars at tension side and 2 -25 mm diameter bars at the compression side with 70 mm cover to centroid of reinforcements. fc' = 30 MPa, fy = 415 MPa. Use 0.75 ρ b = 0.023.
Determine the nominal bending moment, Mn.
236.6 kN.m
266.2 kN.m
263.2 kN.m
226.3 kN.m
Answer:
266.2 kN.m
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