A 6-m simply supported reinforced concrete rectangular beam is 250 mm wide. The total depth is 400 mm and its effective depth is 340 mm. It is reinforced for tension only with 4-28mm diameter bars. It carries a total dead load of 21.6 kN/m including its weight. Fy = 350 MPa and f’c = 20.7 MPa. 1. Compute the distance of the neutral axis from the top most fiber. a. 195.98 mm b. 230.56 mm c. 186.01 mm d. 218.84 mm
A 6-m simply supported reinforced concrete rectangular beam is 250 mm wide. The total depth is 400 mm and its effective depth is 340 mm. It is reinforced for tension only with 4-28mm diameter bars. It carries a total dead load of 21.6 kN/m including its weight. Fy = 350 MPa and f’c = 20.7 MPa. 1. Compute the distance of the neutral axis from the top most fiber. a. 195.98 mm b. 230.56 mm c. 186.01 mm d. 218.84 mm
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 6-m simply supported reinforced concrete rectangular beam is 250 mm wide. The total depth is 400 mm and its effective depth is 340 mm. It is reinforced for tension only with 4-28mm diameter bars. It carries a total dead load of 21.6 kN/m including its weight. Fy = 350 MPa and f’c = 20.7 MPa.
1. Compute the distance of the neutral axis from the top most fiber.
a. 195.98 mm
b. 230.56 mm
c. 186.01 mm
d. 218.84 mm
2. Which of the following gives the ultimate moment capacity of the beam?
a. 202.09 kN.m
b. 181.88 kN.m
c. 171.4 kN.m
d. 186.2 kN.m
3. Which of the following most nearly gives the unfactored uniform live load capacity using the load combination 1.2D+1.6L?
a. 40.42 kN/m
b. 15.38 kN/m
c. 9.06 kN/m
d. 3.84 kN/m
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