Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 1 (Q.No. 5)
5.
Two simply supported beams B1 and B2 have spans l and 2l respectively. Beam B1 has a cross-section of 1 x 1 units and beam B2 has a cross-section of 2 x 2 units. These beams are subjected to concentrated loads W each at the centre of their spans. The ratio of the maximum flexural stress in these beams is
4
2
Discussion:
12 comments Page 2 of 2.
Abhay said:
10 years ago
Stress = Load/Area.
For B1 flexural stress = W/A1 = W/(1x1) = W.
For B2 flexural stress = W/A2 = W/(2x2) = W/4.
The ratio of the maximum flexural stress = W/(W/4) = 4.
For B1 flexural stress = W/A1 = W/(1x1) = W.
For B2 flexural stress = W/A2 = W/(2x2) = W/4.
The ratio of the maximum flexural stress = W/(W/4) = 4.
Rengel said:
9 years ago
Flexural stress should be equal to (3FL/2bd) right.
Load/Area is the axial stress?
Load/Area is the axial stress?
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