Related Questions

The main disadvantage of cement concrete sewers is
A Less strength
B Difficulty in construction
C Difficulty in transportation due to heavy weight
D Less life
The asbestos cement sewers are
A Light in weight
B Not structurally strong to bear large compressive stress
C Susceptible to corrosion by sulphuric acid
D All the above
For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of
A 1 : 2
B 1 : 3
C 1 : 4
D 1 : 6
Corrosion in concrete sewers is caused by
A Septic conditions
B Dissolved oxygen
C Chlorine
D Nitrogen
The suitable cross-section of sewers to carry combined flow, is
A Circular
B Egg shaped
C Rectangular
D Horse shoe shaped
The maximum shear stress (q) in concrete of a reinforced cement concrete beam is
A $$\frac{{{\text{Shear force}}}}{{{\text{Lever arm}} \times {\text{Width}}}}$$
B $$\frac{{{\text{Lever arm}}}}{{{\text{Shear force}} \times {\text{Width}}}}$$
C $$\frac{{{\text{Width}}}}{{{\text{Lever arm}} \times {\text{Shear force}}}}$$
D $$\frac{{{\text{Shear force}} \times {\text{Width}}}}{{{\text{Lever arm}}}}$$
The self cleansing velocity for all sewers in India is usually
A Less than 1.0 m/sec
B 1.0 m/sec to 1.2 m/sec
C 1.5 m/sec to 2.0 m/sec
D 3.0 m/sec to 3.5 m/sec
With self cleansing velocity in sewers
A Silting occurs at bottom
B Scouring occurs at bottom
C Both silting and scouring occur at bottom
D Neither silting nor scouring occurs at bottom
In sewers designed with self cleansing velocity,
A The bottom is silted
B The bottom is scoured
C Both silting and scouring occur at the bottom
D Neither silting nor scouring occurs at the bottom
In sewers the velocity of flow should not be
A More than the self-cleansing velocity
B Less than the self-cleansing velocity
C Less than 10 m/sec
D More than 20 m/sec

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