Computer · Design of Steel Structures
In a built-up beam, the actual bending compressive stress f bc is given by (where y is the distance of the extreme fiber of the beam from the neutral axis, M is the bending moment, and I xx is the moment of inertia):
- 1f bc = (M / I xx ) + y
- 2f bc = (I xx / M) + y
- 3f bc = (I xx / M) × y
- 4f bc = (M / I xx ) × y✓
Correct answer
f bc = (M / I xx ) × y
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