List of top Civil Engineering Questions

During a particular stage of the growth of a crop, consumptive use of water is \(2\) to \(8\) mm/day. If the amount of water available in the soil is \(25\%\) of \(80\) mm depth of water. What is the minimum and maximum frequency of irrigation?
A 6-hour rainstorm with hourly intensities of \(7,\;18,\;25,\;17,\;11\) and \(3\) mm/hour produced a runoff of \(39\) mm. Then, \(\phi\)-index (in mm/hour) is
A peak flow of a flood hydrograph due to a six-hour storm is \(470\) m\(^3\)/s. The corresponding average depth of rainfall is \(8\) cm. Assume infiltration of \(0.25\) cm/hour and a constant base flow of \(15\) m\(^3\)/s. What is the peak discharge of 6 hour unit hydrograph for this catchment?
The Euler's number is the ratio of the inertia force to the
For a given discharge, the critical flow depth in an open channel depends on
Inconsistency of rainfall data can be checked by
In order to avoid cavitation in centrifugal pumps
Steep rise in the flow-mass curve during a certain period indicates
The metacentric height is the distance between the
The power transmitted through a pipe is maximum when the head lost due to friction is equal to
The load carrying capacity of an individual friction pile is \(200\) kN. What is the total load carrying capacity of a group of \(9\) such piles with the group efficiency factor of \(0.8\)?
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called
A vertical wall of height \(6\) m is subjected to a pressure by a liquid of height \(4\) m on one of its sides. The total pressure from the liquid surface acts at a distance of
The contact pressure distribution below a rigid footing on the surface of a clay soil is
If an infinite slope of clay at a depth \(5\) m has cohesion of \(1\) t/m\(^2\) and unit weight of \(2\) t/m\(^3\), then the stability number will be
A plate load test was conducted on clay on a \(300\) mm diameter plate. If the plate settlement was \(18\) mm at a pressure of \(100\) kPa, then the settlement (in mm) of a \(2\) m wide rectangular footing at the same pressure will be
The effect of cohesion on a soil is to
A \(30\) cm diameter friction pile is embedded \(10\) m into a homogeneous consolidated clay deposit. Unit skin friction developed between clay and pile shaft is \(7\) t/m\(^2\) and adhesion factor is \(0.7\). Assuming end bearing is zero, the safe load for factor of safety \(3\) will be
In a Mohr's diagram, a point above Mohr's envelope indicates
The un-confined compressive strength of a soil in an un-disturbed and disturbed state is found to be \(100\) kPa and \(50\) kPa respectively. What is the sensitivity of the soil?
If the coefficient of permeability is doubled and the coefficient of volume compressibility is simultaneously halved, the coefficient of consolidation
The width and depth of a footing are \(2\) m and \(1.5\) m respectively. The water table at the site is at a depth of \(3\) m below the ground level. The water table correction factor for the calculation of the bearing capacity of soil is
A stratified soil deposit has three layers of thicknesses \(z_1=4,\;z_2=1,\;z_3=2\) units and the corresponding permeabilities of \(k_1=2,\;k_2=1\) and \(k_3=4\) units, respectively. The average permeability perpendicular to the bedding planes will be
When a dry sand specimen tested in a triaxial test at \(50\) kPa cell pressure gave a deviation stress \(100\) kPa at failure. The angle of internal friction of sand is
A soil yielded a maximum dry unit weight of \(18\;\text{kN/m}^3\) at a moisture content of \(16\%\) during a Standard Proctor Test. What is the degree of saturation of the soil if its specific gravity is \(2.7\)? (Take \(\gamma_w=10\;\text{kN/m}^3\)).