ABCDEFGHIJKLMNOPQRSTUVWXYZAAABACADAEAFAGAHAIAJAKALAMANAOAPAQAR
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ReferenceCalculationOutput
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w
Properties of wall and backfilled soil
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Height
=3.45
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ß
Base
=1.35
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ß=0
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δ
Unit Weight of Wall
=23.52664
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Angle of wall and backfill
=102
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=#DIV/0!
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Ø of soil
=35
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C of soil
=06210.1
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Unit Weight of soil
=18
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α
Friction Between Wall and backfill δ
=257.428571429
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Friction Between Wall and Foundation
=251926
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Surcharge on backfill w
=0
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According to Rankine's theory on lateral earth pressure
5.8
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Active pressure coefficient Ka;
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Ka=
(1-Sin(Ø)/(1+ sin(Ø)
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By substituting values in above formulae ,
1.1521
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Ka=0.6354950271288.8023125.305
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Considering a I meter width of wall
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Total lateral force on wall
Pa=
1/2*Ka*γ*H2 + ka*w
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2409
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=68.07581604kN5.71
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Taking moments about heel of the wall;
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Total area of the wall
=2.925m2
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Horizontal distance to centroid from heel
=0.730m#REF!
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Dirn.
Force per m (kN)
Arm
Moment per m (kNm)
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Hor.
PaCos(δ+90-(180-α))
=54.371.1562.521.306
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Rh=54.37
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Ver.
PaSin(δ+90-(180-α))
=40.970.2410.01
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Weight of wall
=68.740.7350.18
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Tab.3.10
Rv=109.71
Total M
122.72
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Lever arm of the base resultant from heel
=
Total M/Rv
1.55
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=1.119m
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Distance to middle third of base from heel
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Minimum
=0.450m
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Maximum
=0.900m
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Base resultant is not within the middle third. (Section fails)
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Eccntricity of the base
=0.444m
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Pressure distribution of the base is given by
Rv/B *(1±6e/B)
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Pressure near the heel of the section
=0.00
kN/m2
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Pressure near the toe of the section
=316.04
kN/m3
54
250
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Factor of safety against overturning
=1.41
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Factor of safety against sliding
=
Rv * Tan(δ)/Rh
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=0.94
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Doc. No.
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DEC DESIGN UNITDesigned Date
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 EPC DIVISIONChecked Date
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 CENTRAL ENGINEERING CONSULTANCY BUREAU (CECB)Job Code Page
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ReferenceCalculationOutput
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