A. Light in weight
B. Not structurally strong to bear large compressive stress
C. Susceptible to corrosion by sulphuric acid
D. All the above
Related Mcqs:
- The asbestos cement pipes are generally laid___________________?
A. Horizontally
B. Vertically
C. At an angle of 30°
D. At an angle of 60° - Cement concrete sewers are only suitable if non-scouring velocity is between_________________?
A. 2.5 to 3.0 m/sec
B. 3.0 to 4.0 m/sec
C. 3.5 to 4.5 m/sec
D. 4.5 to 5.5 m/sec - The sewer which received discharge from two or more main sewers, is known as_______________?
A. A trunk sewer
B. An outfall sewer
C. A main sewer
D. An intercepting sewer - The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is_____________________?
A. 0.05552 cumec
B. 0.05554 cumec
C. 0.05556 cumec
D. 0.0556 cumec - The quantity of liquid waste which flows in sewers during the period of rainfall, is known__________________?
A. Sanitary sewage
B. Industrial waste
C. Storm sewage
D. None of these - Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is__________________?
A. pt = 3H3p/2 Z5
B. pt = 2H3p/3 Z5
C. pt = 3H3p/2Z5
D. pt = 2 3p/3Z5 - For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is____________________?
A. Cast iron sewers
B. Cement concrete sewers
C. Glazed bricks sewers
D. Stone ware sewers - The minimum recommended diameter of sewers, is_________________?
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm - The suitable cross-section of sewers to carry combined flow, is__________________?
A. Circular
B. Egg shaped
C. Rectangular
D. Horse shoe shaped - The gas which may cause explosion in sewers, is_________________?
A. Carbondioxide
B. Methane
C. Ammonia
D. Carbon monoxide
