Subtopic: Planning, design and layout of surface and sub-surface drainage systems
Question Statement:
In sub-surface agricultural tile drainage, corrugated perforated plastic tubing (CPT) has largely superseded clay tiles because:
Options:
(A) It is lightweight, continuous, highly flexible, and can be installed rapidly by trenchless drainage plows
(B) It dissolves in alkaline soils
(C) It requires no envelope or filter in sandy soils
(D) It has a higher friction factor than unglazed clay tiles
Answer Key:
A
Step-by-Step Solution & Explanation
Corrugated perforated HDPE/PVC pipes come in continuous coils of several hundred meters, allowing high-speed mechanized laser-guided installation using specialized drain plows or trenchers with minimal labour.