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Whenever workmen have to excavate in trenches in soil, soft rock or hard soil exceeding ............. m in depth, the trenches should be securely shored and timbered.

Correct Answer: 2

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Construction Project Management MCQ: Whenever workmen have to excavate in trenches in soil, soft rock or hard soil exceeding ............. m in depth, the trenches should be securely shored and timbered. | Extra Education