A reinforced concrete rectangular beam with 250 mm in width has an effective depth of 500 mm. It is reinforced only at the bottom with 5-28mm Φ bar. The reinforcing steel strength (Fs = 140 MPa) and a compressive strength of concrete is 28 MPa. Use alternate working stress design method. Modular ratio n = 9.  1. Which of the following most near ly gives the location of the neutral axis from the top most fiber of the beam.  a. 256 mm b. 236 mm c. 226 mm d. 240 mm 2. If it is subjected to a total actual service moment of 100 kN-m, find the actual maximum concrete stress (in MPa)  a. 7.93 b. 8.84 c. 6.84 d. 5.93 3. If it is subjected to a total actual service moment of 100 kN-m, find the actual maximum steel stress (in MPa)  a. 73.63 b. 77.34 c. 66.84 d. 56.85

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A reinforced concrete rectangular beam with 250 mm in width has an effective depth of 500 mm. It is reinforced only at the bottom with 5-28mm Φ bar. The reinforcing steel strength (Fs = 140 MPa) and a compressive strength of concrete is 28 MPa. Use alternate working stress design method. Modular ratio n = 9. 

1. Which of the following most near ly gives the location of the neutral axis from the top most fiber of the beam. 
a. 256 mm
b. 236 mm
c. 226 mm
d. 240 mm
2. If it is subjected to a total actual service moment of 100 kN-m, find the actual maximum concrete stress (in MPa) 
a. 7.93
b. 8.84
c. 6.84
d. 5.93
3. If it is subjected to a total actual service moment of 100 kN-m, find the actual maximum steel stress (in MPa) 
a. 73.63
b. 77.34
c. 66.84
d. 56.85
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