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(Bearing Capacity Analysis)
Q # 01: What will be the gross & net safe bearing pressure of sand having = 3 &
effective unit wt of !"#g $ cc under the following cases%
!) !" ' wide strip footing
) !" !" ' s*uare footing
3) Circular footing of !" ' dia
Q# 02: +or sand = 3, - = !"#g $ cc & strip footing having width = depth = !',
what will be the safe net B"C under the following condition of .round water
table (."W"/)"
!) W"/ touching the base of foundation
) W"/ touching the ground surface"
Assu'e saturated unit wt of soil = "!3 g $ cc
/he soil is assu'ed to re'ain saturated below ground surface"
C = , +"0"1 = 3, 2*= 4"3#, 2r= 5
Q# 03: What will be net ulti'ate Bearing capacity of a soft sensitive clay, in which,
when a vane shear test was conducted ( vanes of ! c' height & # c'
dia'eter), the soil failed at a 'ai'u' /or*ue of 5 6g $ c'" consider a
footing of s*uare shape & density of soil as !"7 g' $ c' 3" use /er8aghi9s
/heory"
Q# 04: A s*uare footing "5' "5' is built in a ho'ogenous bed of sand of density" / $ '& having an angle of shearing = 3#" /he depth of the base of
footing is !"5' below the ."1" Calculate the safe load that can be carried by a
footing with a +"0"1 3 against co'plete shear failure" :se ter8aghi analysis"
!
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Q# 05: What will be the 'a safe load for - = !" / $ '3, = 7 footing si8e = "5 '
; "5 ', C = ,
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'
()eree*Nc N& N+
5"7 !" "
5 "# !" "5
! 4" "# "5!5 !"5 "5 !"#
!7"5 7" 5"
5 "5 !"7 !!"!
3 37" !"# !4"
35 57" !"5 "5
4"# #!"5 !4"5
5 !7"4 !73"3 7!"#
5 "4 3!4"! "4
!a$e Factors use) in Te-rza!i"s .&uations
!a$e Factor tri$ /ircuar &uare ectanuar
c ! !"3 !"3 (!"B$D)
+ ! " "# (!>"B$D)
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