Civil Engineering - Waste Water Engineering - Discussion

3. 

Inter-distance between ventilation columns in a sewer line is kept

[A]. 25 to 50 m
[B]. 50 m to 100 m
[C]. 100 m to 150 m
[D]. 150 m to 300 m.

Answer: Option D

Explanation:

No answer description available for this question.

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