DESIGN OF CANTILEVER RC RETAINING WALL

 

   

DESIGN RESULT

 
DESIGN OF RC CANTILEVER RETAINING WALL

Height of Retaining Wall above GL in M (h1): 4.0

Depth of Retaining Wall below GL in M (h2): 1.0

Width of Retaining Wall Base in M (b1): 2.70

Width of Retaining Wall Toe in M (b2): 0.90

Thickness of Stem at Top in M (t1): 0.20

Thickness of Stem at Base in M (t2): 0.35

Depth of Key if required in M (h3): 0.55

Thickness of Key if required in M (t3): 0.35

Density of Soil Filling in T/M3: 1.7

Lateral Pressure Coefficient of Soil Filling: 0.33

SBC at Depth " h2 " in T/M2: 12

Coefficient of Friction between Soil and Base: 0.55

Concrete Grade: M20

Steel Strength (fy) [N/MM2]: 415

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Horizontal Soil Pressure at Base in T/M2 = 2.81

Horizontal Soil Force at Base in Tons = 7.02

Overturning Moment due to Lateral Soil Force in T-M = 11.7

Weight of Stem in Tons = 3.2

Weight of Base in Tons = 2.36

Weight of Backfill Soil in Tons = 12.06

Weight of Key in Tons = 0.48

Restoring Moment in T-M = 30.85

Total Vertical Load in Tons = 18.1

Base Eccentricity in M = 0.29

Maximum Pressure in Base in T/M2 = 11.02

Minimum Pressure in Base in T/M2 = 2.38

FOS against Overturning = 2.64

FOS against Sliding = 1.72

BM in Stem at Base Top in T-M = 9.4

SF in Stem at Base Top in Tons = 6.07

BM in Stem at Mid Height from Top in T-M = 2.79

BM in Heel at Stem Face in T-M = 5.1

SF in Heel at Stem face in Tons = 5.92

BM in Toe at Stem Face in T-M = 3.74

SF in Toe at Eff. Depth from Stem face in Tons = 5.54

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Capacity of Stem Sec. in BM in T-M = 19.03

Vertical Stem Reinforcement near Base at Soil Face in CM2/M = 14.24

Vertical Stem Reinforcement at 2 /3 rd Height { 3.1 M } from Top at Soil Face in CM2/M = 4.8

Vertical Stem Reinforcement Away from Soil Face in CM2/M = 3.3

Horizontal Stem Reinforcement at Each Face in CM2/M = 1.65

Applied Shear Stress in Stem in Kg/CM2 = 3.64

Max. Permissible Shear Stress in Stem = 29.8

Capacity of Stem Section in Shear in Tons = 12.78
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Main Heel Reinforcement at Top in CM2/M = 7.39

Distribution Heel Reinforcement at Each Face in CM2/M = 2.1

Applied Shear Stress in Heel in Kg/CM2 = 2.96

Max. Permissible Shear Stress in Heel = 29.8

Capacity of Heel Section in Shear in Tons = 10.81
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Main Toe Reinforcement at Bottom in CM2/M = 5.35

Distribution Toe Reinforcement at Each Face in CM2/M = 2.1

Applied Shear Stress in Toe in Kg/CM2 = 2.77

Max. Permissible Shear Stress in Toe = 29.8

Capacity of Toe Section in Shear in Tons = 9.39
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Shear in KEY in Tons = 2.09

Bending Moment in KEY = 1.25

Main vertical KEY Reinforcement in CM2/M = 4.2

Distribution KEY Reinforcement at Each Face in CM2/M = 2.1

Applied Shear Stress in KEY in Kg/CM2 = 1.04

Max. Permissible Shear Stress in KEY = 29.8

Capacity of KEY Section in Shear in Tons = 7.37

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Total Concrete Quantity Consumed by Retaining Wall in M3 / RM = 2.42

Total Steel Quantity Consumed by Retaining Wall in Kg / RM = 89.52

Clear Cover to Reinforcement is taken as 40 MM, Load Factor = 1.5

For Retaining Wall Height > 6.0 M, Refer Abutment Program.

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