Slope Stability Calculator
Calculate factor of safety for slopes using simplified Bishop or ordinary method. Check stability under various water table conditions.
Enter slope parameters to check stability
IMPORTANT DISCLAIMER
This calculator provides PRELIMINARY ESTIMATES ONLY and is intended for planning and budgeting purposes. Results should NOT be used for final structural design or construction without verification by a licensed Professional Engineer (PE) or Chartered Engineer (CEng).
By using this tool, you acknowledge that:
1. All calculations are indicative and may not account for site-specific conditions, load combinations, or local code requirements.
About This Calculator
The Slope Stability Calculator helps geotechnical engineers analyze the safety of natural and man-made slopes for construction projects across the UAE and Gulf. Calculate factor of safety using simplified Bishop or ordinary method of slices, accounting for soil strength, slope geometry, and water table conditions essential for earthwork design and excavation safety.
When to Use This Calculator
- Designing cut slopes for highway and infrastructure projects
- Analyzing excavation side slopes for temporary works
- Evaluating embankment stability during construction
- Assessing slope safety under heavy rainfall conditions
- Supporting slope remediation design recommendations
How to Use This Calculator
Define Slope Geometry
Enter slope height, angle, and bench configurations if applicable.
Enter Soil Properties
Input cohesion (c), friction angle (φ), and unit weight for each soil layer.
Set Water Conditions
Specify water table depth or phreatic surface position.
Select Analysis Method
Choose simplified Bishop (recommended) or ordinary method of slices.
Review Results
Get factor of safety and critical slip surface location.
Typical Scenarios in UAE & Gulf Projects
Geotechnical engineer analyzes 15m deep rock cut for mountain highway. Calculator determines FOS 1.8 for 70° slope in competent rock, but recommends benching at 10m intervals and rock bolting for weathered zones.
Site team evaluates 8m excavation side slopes for metro station. Tool confirms 1:1 temporary slope achieves FOS 1.3 minimum in sandy soil with dewatering, meeting temporary works requirement.
Frequently Asked Questions
Take Your Calculations Further
This calculator reflects the logic built into Arkan's construction management platform.
Last Updated: January 2026
Standards Reference: BS 8002 Earth Retaining Structures, FHWA Slope Stability Manual, Eurocode 7