The lower portion of a manhole is is known as

Related MCQs

• The minimum diameter of a manhole cover should be
• A drop manhole is provided if
• The sanitation system in which a small portion of storm water is allowed to enter in the sanitary sewage sewers and the remaining storm water flows in separate set of sewers, is known as
• The portion of soil through which lateral movement of water takes place is called
• The particle will settle down more rapidly in water at high temperatures than at lower temperatures.
• When in the pervious strata, the surface of water surrounding the well is at atmospheric pressure, the well is known as
• The bacteria which require oxygen for their survival is known as
• A valve which allows the water to flow in one direction but prevents its flow in the reverse direction, is known as
• When the chlorine is added beyond the break point, the process of treating the water is known as
• The natural process in which the oxygen of water of streams is consumed by sewage and at the same time, it is replenished (filled again) by the atmosphere, is known as