Bearing Capacity Prob

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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)

    3