The dimensions of a rectangular beam are limited to b = 300 mm and h = 770 mm. Assume that the bar centroid of tension bars is 70 mm from the beam edge and that of compression bars is 60 mm. Using f’c = 28 MPa, long bar fy = 415 MPa, calculate the following for a factored bending moment of 1200 kN: a. Maximum steel ratio limiting the tensile strain to 0.004. b. Required amount of tensile reinforcement if the tensile steel strain is limited to 0.005. c. Required amount of compression reinforcement.
The dimensions of a rectangular beam are limited to b = 300 mm and h = 770 mm. Assume that the bar centroid of tension bars is 70 mm from the beam edge and that of compression bars is 60 mm. Using f’c = 28 MPa, long bar fy = 415 MPa, calculate the following for a factored bending moment of 1200 kN: a. Maximum steel ratio limiting the tensile strain to 0.004. b. Required amount of tensile reinforcement if the tensile steel strain is limited to 0.005. c. Required amount of compression reinforcement.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The dimensions of a rectangular beam are limited to b = 300 mm and h = 770 mm. Assume that the bar centroid of tension bars is 70 mm from the beam edge and that of compression bars is 60 mm. Using f’c = 28 MPa, long bar fy = 415 MPa, calculate the following for a factored bending moment of 1200 kN:
a. Maximum steel ratio limiting the tensile strain to 0.004.
b. Required amount of tensile reinforcement if the tensile steel strain is limited to 0.005.
c. Required amount of compression reinforcement.
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