Solve the following. A 12m simply supported beam is provided with an additional support at its midspan. The beam has a width of 300mm and an overall depth of 450mm. It is reinforced with four 25mm diameter bars at the tension side and two 25 mm diameter bars at the compression side. Concrete covering is 70mm to the centroid of the bars. Concrete strength fc'=30MPa and steel yield strength of 420MPa. i.Determine the depth of rectangular compression stress block, mm. a. 128.99 c. 214.26 b. 107.80 d. 98.36 ii. Determine the nominal moment capacity of the beam in kN-m. a. 505.45 c. 345.33 b. 331.10 d. 367.88 iii. Determine the total factored uniform load including the beam weight that the beam could carry, kN/m. a. 20.438 c. 28.080 b. 25.272 d. 18.394

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Solve the following. A 12m simply supported beam is provided with an additional
support at its midspan. The beam has a width of 300mm and an overall depth
of 450mm. It is reinforced with four 25mm diameter bars at the tension side
and two 25 mm diameter bars at the compression side. Concrete covering is
70mm to the centroid of the bars. Concrete strength fc'=30MPa and steel yield
strength of 420MPa.
i.Determine the depth of rectangular compression stress block, mm.
a. 128.99
c. 214.26
b. 107.80
d. 98.36
ii. Determine the nominal moment capacity of the beam in kN-m.
a. 505.45
c. 345.33
b. 331.10
d. 367.88
iii. Determine the total factored uniform load including the beam weight that
the beam could carry, kN/m.
a. 20.438
c. 28.080
b. 25.272
d. 18.394
Transcribed Image Text:Solve the following. A 12m simply supported beam is provided with an additional support at its midspan. The beam has a width of 300mm and an overall depth of 450mm. It is reinforced with four 25mm diameter bars at the tension side and two 25 mm diameter bars at the compression side. Concrete covering is 70mm to the centroid of the bars. Concrete strength fc'=30MPa and steel yield strength of 420MPa. i.Determine the depth of rectangular compression stress block, mm. a. 128.99 c. 214.26 b. 107.80 d. 98.36 ii. Determine the nominal moment capacity of the beam in kN-m. a. 505.45 c. 345.33 b. 331.10 d. 367.88 iii. Determine the total factored uniform load including the beam weight that the beam could carry, kN/m. a. 20.438 c. 28.080 b. 25.272 d. 18.394
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