Geotechnical Engineering

DHARM

N-GEO\OBJ.PM5 886

886 GEOTECHNICAL ENGINEERING

97. The most unfavourable condition for the stability of an earth slope is the ............ condi-
    tion.


98. Taylor’s stability number N is given by

(a)N =

γH

cm (b)N =

c

H

m

γ

(c)N =

cHm

γ (d)N =

γc

H

m

99. Generally speaking, the effect of pore water is to ............ the stability of a slope.


100. The correction factor for the friction circle is dependent upon ............ of the failure arc.


101. The vertical stress intensity σz at a depth z directly beneath a concentrated load Q,
     according to Boussinesq, is .............


102. The locus of a point at which the vertical stress intensity is the same value is called
     .............


103. For layered deposits, which show large lateral restraint, the more appropriate theory of
     stress distribution is considered to be .............


104. The influence coefficient for vertical stress intensity inside a soil medium due to a sur-
     face point load obtained from Westergaard’s theory are greater than those from
     Boussinesq’s. True/False.


105. The absolute maximum shear stress when a strip load of intensity q and width B acts
     on the surface of a soil medium is given by .............


106. The expression for vertical stress at a point below the corner of a rectangular loaded
     area was derived by .............

10.7. For the determination of the vertical stress underneath any point caused by an irregu-
lar loaded area, ............ is used.

108. An approximate method for the determination of stress beneath any point of a loaded
     area is .............


109. The settlement of a soil in an overconsolidated condition is ............ than that in the
     normally consolidated condition.


110. The effect of horizontal drainage on the ............ is to accelerate it and it has no effect on
     the .............


111. The contact pressure at the edges of a rigid footing on a saturated clay is ............ theo-
     retically.


112. The maximum contact pressure on a rigid footing on a cohesionless soil occurs at the
     .............


113. The process of compaction of a soil involves

(a) expulsion of pore water.

(b) expulsion of pore air.

(c) expulsion of both pore air and pore water.

(d) none of the above.