Top elevation of retaining wall 2 m. Total Vertical Load 33.43 Kn
Elevation of soil, open side 0.6 m. Righting Moment 15.03 Kn.m
Water table elev., ret. Side m. Overturning Moment 6.91 Kn.m
Water table elev., open Side m. Total Hor. Force 10.36 Kn
Wall thickness at base 0.15 m. Resisting Hor. Force 16.72 Kn
Wall thickness at top 0.15 m. Actual FS (sliding) 1.61
Slab Thickness 0.2 m. Actual FS (overturning) 2.18
Dimension of Heel 0.8 m. Pressure at Toe 86.74 KPa
Dimension of Toe 0 m. Pressure at Heel -16.36 KPa
Weight density of Soil 1600 kgs/cu.m. Vertical Load Location from Toe 0.24 m.
Weight density of Concrete 2400 kgs/cu.m. Moment at wall 5.03 Kn.m
K Factor for Lateral Pressure 0.33 Required Thickness of Wall @ Base 102 mm
Allowable Soil Pressure 120 Kpa Required Spacing (Bars @ Wall) 250 mm
Soil Friction Coefficient 0.5 Shear Stress at Wall 0.08 Mpa
Factor of Safety (sliding) 1.5 Allowable Shear Stress 0.40 Mpa
Factor of Safety (overturning) 2 Shear Stress at Heel 0.18 Mpa
Depth of Surcharge 0 m. Shear Stress at Toe 0.00 Mpa
Backfill Angle 0 deg Moment at Heel 6.52 Knm
Fc' 20 MPa Moment at Toe 0.00 Knm
Fy 276 MPa Required Thickness of Slab 145 mm
k 0.4081 As Required for Toe 0 mm^2
j 0.8640 As Required for Heel 511 mm^2
Slab Clear Cover 75 mm As Required for Temp. at Wall 375 mm^2
Wall Clear Cover 40 mm As Required for Temp. at Slab 500 mm^2
Total Slab Length 0.95 m. Spacing of Bars at Toe mm
Size of Bar at Wall 12 mmØ Spacing of Bars at Heel 221 mm
Size of Bar at Toe 12 mmØ Spacing of Wall Temperature (open side) 452 mm
Size of Bar at Heel 12 mmØ Spacing of Wall Temperature (ret. side) 904 mm
Temperature Bar at Wall 12 mmØ Spacing of Slab Temperature Bars 226 mm
Temperature Bar at Slab 12 mmØ Allowable Bond Stress, Wall 3.779 Mpa
Actual Bond Stress, Wall 0.6193 Mpa
Allowable Bond Stress, Heel 3.779 Mpa
Actual Bond Stress, Heel 1.234 Mpa
Allowable Bond Stress, Toe 3.779 Mpa
Actual Bond Stress, Toe Mpa
Moment at 1/3 height of wall 1.4917 Kn.m
d@1/3height 0.11 m.
As @ 1/3 height 126.38 mm^2
Required vertical bar spacing @ 1/3h 894 mm
Moment at 2/3 height of wall 0.1865 Kn.m
d@2/3height 0.11 knm
As @ 2/3 height 15 knm
Required vertical bar spacing @ 2/3h 7539 mm
Retaining Wall Design
Programmed by: Arch. P. Arambala
Increase Heel or Toe dimension
0.296296
Retaining Wall Design
Programmed by: Arch. P. Arambala
TOP OF SURCHARGE SOIL
Slab Clear Cover 75 mm
Wall Clear Cover 40 mm 150
0
K Factor for Lateral Pressure 0.33 TOP ELEV. OF SOIL
Allowable Soil Pressure 120 Kpa
Soil Friction Coefficient 0.5 12mmØ Temp. bars @ 452mm OC BW
Fc' 20 MPa
Fy 276 MPa
Righting Moment 15.03 Kn.m 12mmØ Vertical bars @ 250mm o.c. up to
Overturning Moment 6.91 Kn.m
1400
1/3 wall height, 300mm o.c up to 2/3 wall
Factor of Safety against sliding 1.61 height, rest @ 300 mm o.c.
Factor of Safety against overturning 2.18
Pressure at Toe 86.74 KPa
Pressure at Heel -16.36 KPa
2000
12mmØ hor. Temp. bars @ 300mm OC
Vertical Load Location from Toe 0.24 m.
Moment at Base of Wall 5.03 Kn.m GRND 12mmØ top bars @ 221mm OC with
Shear Stress at Stem 0.08 Mpa
Shear Stress at Heel 0.18 Mpa 12mmØ temp. bars @ 226mm OC
400
Shear Stress at Toe 0.00 Mpa
Allowable Shear Stress 0.40 Mpa
Moment at Heel 6.52 Knm
Moment at Toe 0.00 Knm
200
12mmØ temp. bars @ 226mm OC
0 150 800
950
NOTE: All dimensions are in millimeters unless indicated otherwise.
Retaining Wall Design
Programmed by: Arch. P. Arambala