GATE 2023 AR — Architecture – Question 37
Which provisions belong to a septic tank?
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Show answer and explanation
Correct answer: (A) Space for sewage settling; (B) Space for sludge storage; (D) Space for sludge digestion
Explanation
A septic tank provides sedimentation, sludge accumulation and anaerobic digestion: A, B, D. Its containment should prevent uncontrolled leakage; intentional soil infiltration belongs to a suitable downstream disposal system, not a leaking tank liner. Thus C is incorrect.