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The defect indicated by curvature formed in a transverse direction is:(a) Bow(b) Spring(c) Twist(d) CupThis question was addressed to me in unit test.Question is from Defects and Preservation of Timber in division Materials for Construction of Basic Civil Engineering

Answer» CORRECT choice is (d) Cup

To explain: BOW is curvature in direction of length.Spring is curvature in its own plane.Twist occurs when timber plank has SPIRALLY DISTORTED ALONG its length.


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