A crop requires 19 cm of water in 14 days, then the duty of the crop is
Which of the following is not a retarding admixture?
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For constructing dams and foundation, the type of cement generally used is:
To form a still water pocket in front of the canal head, the following is constructed:
Lewelling, centering and Orientation are work operation of
Expansion joints are provided if the length of the concrete structure exceeds -
A tension member, if subjected to a possible reversal of stress due to wind, the slenderness-ratio of the member should not exceed.
For the stiffness criteria of a simply supported beam the ratio of its span to depth shall not exceed:
In ordinary Portland cement, the first one to react with water is :
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 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
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.
The maximum numerical value of Poisson’s ratio is
Total pressure on the vertical face of retaining wall of height h, per unit run, exerted by the retained earth weighing ω per unit volume and angle of repose is ϕ given by
Assumption made in Terzaghi's consolidation theory is-
Rivets connecting flange angles to cover plates in a plate girder are subjected to-
Minimum spacing between horizontal parallel reinforcement of different sizes should not be less than-
One of the following is not a type of stairs. Mark the same,
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?
Calculate the total angle of twist for a stepped shaft that is subjected to the torque (T) as shown in the figure below.