Computer · Strength of Materials
Two beam sections are subjected to bending with a load acting from the top: (i) a rectangular beam (width b = 200 mm, depth d = 400 mm) with the load acting on the top face of width b, and (ii) a symmetrical I-section (flanges 250 mm × 20 mm, web 460 mm × 20 mm) with the load acting on the top flange face. At which locations will the intensity of shear stress due to bending be maximum for these two sections?
- 1At a distance of 0.5 d from the top face for the rectangular beam; at the neutral axis (middle of the web) for the I-section✓
- 2At a distance of 0.25 d from the top face for the rectangular beam; at the junction of the web and the bottom flange for the I-section
- 3At the top face (d = 0) for the rectangular beam; at the top face of the flange for the I-section
- 4At a distance of 0.5 d from the top face for the rectangular beam; at the neutral axis for the I-section
Correct answer
At a distance of 0.5 d from the top face for the rectangular beam; at the neutral axis (middle of the web) for the I-section
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