Related Questions

If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is
A $${\text{D}} = \frac{{{\text{W}}\left( {{\text{a}} - {\text{b}}} \right)}}{{4{{\text{a}}^2}{\text{bq}}}}$$
B $${\text{D}} = \frac{{{\text{W}}\left( {{{\text{a}}^2} - {{\text{b}}^2}} \right)}}{{4{{\text{a}}^2}{\text{bq}}}}$$
C $${\text{D}} = \frac{{{\text{W}}\left( {{{\text{a}}^2} - {{\text{b}}^2}} \right)}}{{8{{\text{a}}^2}{\text{bq}}}}$$
D $${\text{D}} = \frac{{{\text{W}}\left( {{{\text{a}}^2} - {{\text{b}}^2}} \right)}}{{4{\text{abq}}}}$$
In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed
A 10 mm
B 15 mm
C 20 mm
D 25 mm
The differential settlement in case of foundations on sandy soils should not exceed
A 25 mm
B 40 mm
C 65 mm
D 100 mm
Casting of a centrifugal pump is designed so as to minimize
A Friction loss
B Cavitations
C Static head
D Loss of kinetic energy
The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to
A 10 mm
B 20 mm
C 30 mm
D 40 mm
In case of foundations on sandy soil, maximum permissible differential settlement, is usually limited to
A 15 mm
B 25 mm
C 35 mm
D 45 mm
To ensure that supporting area of an offset footing of a boundary wall is fully compressive, the C.G. of load must act
A At the centre of the base
B Within the middle third of the base
C Within the middle fifth of the base
D Neither (A), (B) nor (C)
Raft foundation are generally preferred to when the area required for individual footing, is more than
A 25% to total area
B 30% of total area
C 40% to total area
D 50% of total area
In a simple on-off controller with differential gap, the magnitude of differential gap determines
A The level of accuracy
B The life of controller
C Both (a) and (b)
D Neither (a) nor (b)
Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).
A H
B 12.6 H
C 13.6 H
D 14.6 H

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