Retaining Wall

Soil Parameters

Angle of internal friction ϑ 33 ka 0.26Soil Density γ 16 kp 3.85Sliding Friction Coeff υ 0.15 w 0Max ground pressure Pb 200

Applied Soil pressures

Active soil pressure Pa 24.96Passive soil pressure Pp 30.80Surcharge pressure Pw 0Water pressure Water table well below and drainage provided

Overturning Sliding

Description Force Lever arm Moment Passive resistanceSliding resistance

Backfill 87.88 2.17 190.41Surcharge 0 3.25 0 Sliding FOS 1.54

Total 87.88 190.41Soil Pressure

Stabilising DL + LL Ecc 0.525

Description Force Lever arm Moment L/6 0.542

Backfill 192 2.25 432Cover 6 0.375 2.25 Pmin 6.80Stem rect 72 1 72.00 Pmax 423.36Stem base 39 1.625 63.38Surcharge 0 2.25 0Point load 390 1 390

Total 699.00 959.63

OVERTURNING FOS 5.04 OKAY

depends on ϑ Trail DimensionsSuggested Using

height 6 6000 6000Wall thickness 0.54 540 500Base thickness 1 1000 500Toe projection 0.75 750 750Heel projection 2.4 2400 2000Depth of soil over toe 0.5 500 500

Point load on Wall 390 KN

Ultimate Limit State

30.80 Description Force Factor Ultimate104.85

Backfill 192 1.4 268.8OKAY Cover 6 1.4 8.4

Stem rect 72 1.2 86.4Stem base 39 1.2 46.8Surcharge 0 1.6 0Point load 390 1.2 468

Total 878.4

Pmin 8.54Pmax 532.01

6 q H 6500 6.50.5 e L 3250 3.250.5 p Desity conc 24

0.75 c2 f

0.5 b

Sliding Dead load Only

Passive resistance 30.80Sliding resistance 46.35

Sliding FOS 0.88

Stabilising DL Only

Description Force Lever arm Moment

Backfill 192 2.25 432Cover 6 0.375 2.25Stem rect 72 1 72.00Stem base 39 1.625 63.38Surcharge 0 2.25 0Point load 3000 1 3000

300 300Total 309 869.63

OVERTURNING FOS 4.57 OKAY

Heel0.75

Description Shear Lever arm Moment

Rectangular Pressure 540 1 540Triangular Pressure 110 0.67 73.33Heel 57.6 1 57.60Backfill 192 1 192.00Surcharge 0 1 0.00

Total 400.4 363.73

495Toe

Description Shear Lever arm Moment

Rectangular Pressure 313.5 0.375 117.56Triangular Pressure 28.875 0.5 14.44Toe 21.6 0.375 8.1Cover 8.4 0.375 3.15

Total 312.375 120.75

Stem

Description Shear Lever arm Moment

Backfill 595 3.33 1981.35Surcharge 153.28 5 766.4Reaction force 272 10 2720

Total 476.28 27.75

Bending - Stem0.5 2

d 438K' 0.156K 0.00

270 z/d 0.95Z 416.1As 170.35Nominal Reinforcement Min As 1690

380418 Shear - Stem

v 1.09100As/bd 0.03

Bending - Toe fcu/25 1.2400/d 0.91

d 440 0,75/1,4 0.54K' 0.156 vc 0.19K 0.02 < K vc < vz/d 0.945Z 415.8 Asv/Sv 1.01As 741.77 MinAsv/Sv 0.53Nominal Reinforcement Y 32 @ 275 Smax 328.5Min As 1300 2949 Y 10 157

Sv 156.03Shear - Stem

v 0.71100As/bd 0.67 0.88fcu/25 1.2 1.06400/d 0.91 0.980,75/1,4 0.54vc 0.49vc < v

Asv/Sv 0.25MinAsv/Sv 0.528Smax 330Y 10 157Sv 626.09

Bending - Heel

d 440K' 0.156

< K K 0.06z/d 0.95Z 418As 2222.67Y12 @ 350 323Min As 572

Shear - Heel

v 0.910.34 100As/bd 0.07 0.421.06 fcu/25 1.2 1.060.98 400/d 0.91 0.98

0,75/1,4 0.54vc 0.23vc < v

Asv/Sv 0.76MinAsv/Sv 0.528Smax 330Y 10 157Sv 297.35