SkyCiv Documentation

Your guide to SkyCiv software - tutorials, how-to guides and technical articles

1. Home
2. SkyCiv Retaining Wall
3. Verification pages
4. Model 2 (Metric)

Model 2 (Metric)

Retaining Wall Calculation Verification – Reinforced Concrete Cantilever  – Metric

The data used in this verification example and the results to compare with SkyCiv Retaining Wall Design Software were from: The Reinforced Concrete Design Handbook, ACI SP-17(14), Vol. 2, p. 62. All the input data and results were converted to metric units using known conversion factors for the purpose of this verification.

Input data

Stem

• Height: 3.124 m
• Width: 0.305 m
• Offset: 0.686 m

Base

• Width: 2.210 m
• Thickness: 0.381 m

Active and Passive Soil

• Unit weight: 18.85 kN/m3
• Friction Angle: 35 degrees

Substructure Soil

• Unit weight: 18.85 kN/m3
• Friction Angle: 35 degrees
• Soil-Concrete Friction Coefficient: 0.55
• Allowable bearing pressure: 143.641 kPa

Soil Layers:

• Active: 3.505 m
• Passive: 0.975 m
• Substructure: 0.792 m

Results

After creating the model in the SkyCiv Retaining Wall Software it was solved. The following table shows the results obtained using the software and the ones reported in The Reinforced Concrete Design Handbook. All the results were converted to metric units keeping in mind that the depth of the model is now 1 m and for the model in imperial units was 1 ft:

Units ACI Manual SkyCiv Difference
Overturning
135.096
135.118 0.02%
Restoring moment kN * m
189.250
189.298 0.03%
47.751
47.749 0.00%
Overturning moment  kN * m
65.358
65.351 -0.01%
FoS
2.900
2.897 -0.10%
Sliding
FoS
1.560
1.556 0.26%
Bearing
Distance of the resultant m
0.917
0.917 -0.05%
Eccentricity m 0.189 0.188 -0.52%
Maximum Pressure kPa
92.505
92.291 -0.23%
Minimum Pressure kPa
29.782
29.987 0.69%
FoS
1.550
1.556 0.39%