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Open cross sections have major part of material distributed

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Open cross sections have major part of material distributed

(a) is not distributed

(b) on the centroid

(c) towards centroid

(d) away from centroid

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This key question is from Factors affecting Lateral Stability in section Design of Beams of Design of Steel Structures

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Right answer is (d) away from centroid

Easy explanation: In open cross sections ( I and channel sections), major part of material is distributed at the flanges, i.e. away from their centroids, to improve their resistance to in-plane bending stresses.

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