Which type of excavation is used for laying large pipelines?
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A.
Muck excavation
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B.
Rock excavation
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C.
Trench excavation
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D.
Open excavation
Correct Answer:
C. Trench excavation
Explanation:
The correct answer is Trench excavation.
Trench excavation is the primary method used for installing large underground pipelines, as it involves digging narrow, deep channels specifically designed for conduits. This process focuses on creating a precise path that minimizes soil disturbance while providing a stable bedding for the pipes. Unlike muck excavation, which handles unstable water-soaked soil, or rock excavation, which requires specialized drilling and blasting, trenching allows for the efficient placement, joining, and backfilling of utility lines over long distances. It is the standard industrial approach for ensuring the structural integrity and proper alignment of large-scale piping systems.
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