The minimum clear cover (in mm) for footing, according to IS 456 : 2000, shall be
Acid rain is caused due to which of the following?
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The distribution system in water supplies is designed based on:
For the stiffness criteria of a simply supported beam the ratio of its span to depth shall not exceed:
A doubly reinforced beam is considered less economical than a singly reinforced beam because
The purpose of lateral ties in short concrete columns is-
The minimum grade of reinforced concrete in seawater as per IS 456: 2000 is :
The concrete mix which causes difficulty is obtaining a smooth finish is known to possess.
The void ratio of a given soil A is twice that of another soil B, while the effective size of Particles of soil A is one-third of that of soil B. The ratio of height of capillary rise of water in soil A to that B will be
Which of the following is not primary air or pollutant?
Warping stresses in a C.C. Pavement are due to:
The structure in which a number of equilibrium equations are not enough to compute the reactions are:
Spherical shape of droplets of mercury is due to -
Determine the coefficient of permeability of a confined aquifer 6m thick which gives a steady discharge of 20 liters/sec through a well of 0.5 m radius. The height of water in the well, which was 12 m above the base before pumping, dropped to 8 m. Take the radius of influence as 300 m.
In designing hydraulic structures in alluvial rivers, the equation used to calculate the normal depth of scouring R for discharge intensity of (qm3/s/m) is.
The ideal form of the curve for the summit curve is
The initial setting time of fresh concrete should be
Spalling stresses are produced in post-tensioned pre-stressed concrete members at-
The ratio of liquid limit to plasticity index for a soil mass is called
Bernoulli's theorem deals with the law of conservation of:
A surveyor made an error during the survey of a project which is associated with his skills and vigilance. Which type of error this surveyor has committed?
A soil sample has an exchangeable sodium percentage of 16%, its electrical conductivity is 3.3 milli – mhos /cm, and pH of 9.5. How is the soil classified?
The main objective of compaction of concrete is: