A rectangular reinforced concrete beam having a simple span of 4.5 m carries a service dead load of 20 kN/m and a service live load of 35 kN/m. Steel covering is 75 mm measured from the centroid of the tension steel. Concrete strengths is f'c-28 MPa and steel yield strength is fy=420. 1. Calculate the expected design moment of the beam 2. Which of the following gives the least dimension (bxh) of the beam using the maximum allowable reinforcement ratio? a. 200 mm x 450 mm b. 200 mm x 475 mm c. 225 mm x 450 mm d. 250 mm x 500 mm 3. Determine the required steel area using the dimensions obtained above.
A rectangular reinforced concrete beam having a simple span of 4.5 m carries a service dead load of 20 kN/m and a service live load of 35 kN/m. Steel covering is 75 mm measured from the centroid of the tension steel. Concrete strengths is f'c-28 MPa and steel yield strength is fy=420. 1. Calculate the expected design moment of the beam 2. Which of the following gives the least dimension (bxh) of the beam using the maximum allowable reinforcement ratio? a. 200 mm x 450 mm b. 200 mm x 475 mm c. 225 mm x 450 mm d. 250 mm x 500 mm 3. Determine the required steel area using the dimensions obtained above.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![A rectangular reinforced concrete beam having a simple
span of 4.5 m carries a service dead load of 20 kN/m and
a service live load of 35 kN/m. Steel covering is 75 mm
measured from the centroid of the tension steel. Concrete
strengths is f'c-28 MPa and steel yield strength is fy=420.
1. Calculate the expected design moment of the
beam
2. Which of the following gives the least dimension
(bxh) of the beam using the maximum allowable
reinforcement ratio?
a. 200 mm x 450 mm
b. 200 mm x 475 mm
c. 225 mm x 450 mm
d. 250 mm x 500 mm
3. Determine the required steel area using the
dimensions obtained above.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9d802587-64c0-4e99-a63a-07ce7435e103%2F92b3d373-f64a-49e3-868f-95494fef85fe%2Fkpn4q65_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A rectangular reinforced concrete beam having a simple
span of 4.5 m carries a service dead load of 20 kN/m and
a service live load of 35 kN/m. Steel covering is 75 mm
measured from the centroid of the tension steel. Concrete
strengths is f'c-28 MPa and steel yield strength is fy=420.
1. Calculate the expected design moment of the
beam
2. Which of the following gives the least dimension
(bxh) of the beam using the maximum allowable
reinforcement ratio?
a. 200 mm x 450 mm
b. 200 mm x 475 mm
c. 225 mm x 450 mm
d. 250 mm x 500 mm
3. Determine the required steel area using the
dimensions obtained above.
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