What are the manholes having a depth greater than 1.5 m called?

Civil Engineering : Waste Water Engineering - Quiz(MCQ)

Deep manholes

Normal manholes

Shallow manholes

Straight manholes

Correct Answer : Deep manholes

Explanation : The manholes having a depth of 0.7-0.9 m are called shallow manholes. The manholes having a depth of 1.5 m are called normal manholes. The manholes having depth greater than 1.5 m are called deep manholes.

Recently Updated in Waste Water Engineering Questions

What is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of the water quality called?

Algae growth

Eutrophication

Denitrification

Nitrification

Correct Answer : Option (B) : Eutrophication

Explanation : Eutrophication is the growth of huge amounts of algae and other aquatic plants leading to the deterioration of water quality. The untreated wastewater is rich in organic matter which demands oxygen.