The ratio of depths at partial flow with central angle α and at full flow of a sewer, is

More Questions from Waste Water Engineering

• In a residential colony, sewers of diameters 100 mm, 150 mm and 225 mm were laid with a gradient 1 in 120. Which portion of the sewage system does not choke in due course of time
• Pick up the correct statement from the following :
• Kjedahl nitrogen is a mixture of
• In sewers the velocity of flow should not be
• Traps
• Assertion (A) : A free board of 0.3 m is provided above the top sewage line in septic tanks. Reason (R) : It helps to accommodate the scum in the septic tank.
• If D is the diameter of a circular sewer and D' is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is
• The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is
• The maximum depth of sedimentation tanks, is kept
• The detention time (t) of a settling tank, may be defined as the time required for

Discussion & Comments