Slope Stability Factor of Safety Analyzer
Verify slope stability factor of safety calculations and identify critical slip surfaces
What You Can Do
You can rapidly review and verify FS calculations from geotechnical software (SLOPE/W, SLIDE2D, Bishop, Janbu), evaluate multiple failure mechanisms across a single slope, and document assumptions and sensitivity drivers for regulatory submissions. Claude helps you interpret soil strength parameters, flag inconsistencies in geometry and water conditions, and build narrative justifications for FS thresholds—accelerating the critical interpretation and documentation steps that impact project liability and safety margins.
Features
cross-check FS calculations from slope stability software against limit equilibrium principles and validate input reasonableness
analyze multiple failure mechanisms (circular, non-circular, wedge, compound) to locate govering failure surfaces and assess sensitivity to input parameters
correlate lab testing results, SPT/CPT data, and published correlations to appropriate shear strength inputs (c, φ, cu, φ')
systematically record and justify pore pressure conditions, material property assignments, geometry constraints, and design safety factors for defensible reports
identify key drivers of FS variation and guide screening of design alternatives before committing to detailed numerical modeling
synthesize FS results, failure mechanism rankings, and design margins into coherent justifications for permanent (FS ≥ 1.3) and temporary (FS ≥ 1.15) slope classifications
organize and compare FS results across mine phases, pit walls, embankment sections, or construction stages with consistent methodology
detect conflicts between geometry, water table assumptions, material properties, and calculated FS values that warrant software re-entry or field verification
Example Output
Example 1: FS Verification & Critical Surface Identification
Input: SLOPE/W output showing FS = 1.42 for 45° pit wall in sandy silt with φ' = 32°, c' = 5 kPa, γsat = 19 kN/m³, steady-state pore pressure ratio ru = 0.25.
Clause output:
- ✓ FS value consistent with Janbu simplified method for 60 m wall height
- Critical slip surface: 38° curved failure plane initiating at crest, exiting at toe
- Sensitivity drivers: pore pressure ratio (±0.05 change = ±0.15 FS), φ' variation (±2° = ±0.12 FS)
- Design margin: 0.12 above permanent threshold; recommend intrinsic drainage or slope flattening if water conditions worsen
Example 2: Assumption Documentation
Input: Mine embankment design with mixed fill (weathered granite, clay), variable SPT N-values.
Output checklist:
- ✓ Clay lenses (N < 5): assigned φ' = 28°, c' = 8 kPa per USCS classification; source: lab triaxial (CID) or correlated estimate?
- ✓ Weathered granite (N = 15–25): φ' = 36°, c' = 0 kPa; assumes drained conditions and no cementing
- ✓ Pore pressure: assumed hydrostatic below water table (ru = 0.33 at 10 m depth); site history and seasonal fluctuations documented?
- ✓ Design FS = 1.3 (permanent); justifies long-term stability and creep resistance
- Flagged: Contact zones between fill and native foundation; recommend explicit interface friction or limiting angle analysis
Example 3: Regulatory Narrative
Output section for permitting submission: "The north pit wall (Phase 2) achieves FS = 1.38 under steady-state pore pressure conditions (Janbu simplified, non-circular slip surface). This margin of 0.08 above the regulatory minimum of 1.3 reflects conservative assignment of φ' = 30° to interbedded clay layers and assumes no active mine dewatering. Sensitivity analysis shows FS remains > 1.3 provided pore pressure ratio does not exceed 0.30; monitoring wells and depressurization drilling will maintain ru ≤ 0.25 during operations."
What's Included
- SKILL.md: detailed skill instructions covering limit equilibrium framework, when to invoke the skill, and how to structure geotechnical inputs
- FS Verification Checklist: systematic walkthrough for reviewing software output (geometry, material properties, water table, boundary conditions, FS computation)
- Failure Mechanism Comparison Template: structured format for evaluating circular, non-circular, wedge, and compound failure surfaces and ranking by govening FS
- Soil Parameter Correlation Worksheet: reference table linking SPT/CPT data, lab testing results, and USCS classification to published c' and φ' values with uncertainty ranges
- Regulatory Documentation Framework: section templates for embedding FS results, sensitivity findings, and design margin justifications into permit submittals and technical reports
Who It's For
- Geotechnical engineers — reviewing and documenting factor of safety calculations for mine pit walls, dam embankments, and cut/fill slopes
- Design engineers — screening slope stability alternatives and building defensible FS narratives for permitting and peer review
- Mining and civil contractors — validating slope geometry and material assumptions before construction and during dewatering operations
- Regulatory and compliance teams — preparing stability assessments and design margins for environmental and safety submissions
- Litigation and forensic engineers — reconstructing stability analyses and failure mechanisms for incident investigation and expert testimony
Best For
- Verification and interpretation of slope stability software output (SLOPE/W, SLIDE2D, Bishop, Janbu methods)
- Documentation of assumptions, soil parameters, and pore pressure conditions for regulatory and contractual defense
- Screening multiple failure mechanisms and design alternatives to guide detailed numerical modeling
- Synthesis of FS results across multiple slope sections, construction phases, or pit walls with consistent methodology
- Building narrative justifications for factor of safety thresholds (permanent 1.3, temporary 1.15) in permit and technical reports
You might also like
Query your local Screenpipe instance to retrieve screen recordings, audio transcriptions, UI element accessibility trees, keyboard/mouse input logs, and productivity analytics. You can search by keywords, filter by content type (audio, OCR, accessibility, input), set time ranges, and extract structured data about your applications, meetings, and work sessions without sending data to external servers.
by az9713
This skill automates the detailed calculations required for electrical system design, converting connected loads to demand loads, sizing conductors and equipment per NEC standards, and analyzing voltage drop across feeders and branch circuits. You input project parameters and receive complete load schedules, equipment recommendations with ampacity ratings, conductor specifications, and code citations—eliminating manual calculation errors and enabling faster design iterations for permit-ready documentation.
by az9713
You can conduct comprehensive slope stability analyses that integrate site characterization, soil/rock properties, and quantitative calculations to evaluate both simple and complex slope geometries. The framework helps you identify critical failure mechanisms, calculate safety factors, assess groundwater and seismic effects, and develop technically defensible remediation recommendations suitable for permitting, design decisions, and stakeholder communication.
by az9713
You can systematically design test cases for any feature or system by analyzing requirements or code to extract test parameters, values, and business constraints. The skill generates a PICT model, executes pairwise testing logic to minimize test case count while maximizing coverage, and delivers a formatted test matrix with expected results—reducing manual test design effort while ensuring comprehensive scenario coverage.
by az9713
This skill deconstructs your writing samples to identify the specific patterns, personality markers, emotional range, language quirks, and formatting habits that make your voice uniquely yours. You'll receive a detailed voice DNA profile that includes your core communication style, signature phrases, emotional tone, formality level, and what you actively avoid—creating a blueprint that AI systems can use to replicate your authentic voice consistently across projects, platforms, and content types.
by az9713
You can decompose complex timber structures into analyzable load paths, trace forces from applied loads through members to supports, and calculate governing demands for each structural element. This skill helps you identify critical design points, apply appropriate load factors and duration adjustments, and create defensible design documentation that satisfies code officials and peer reviewers.
by az9713
You can compare building materials across embodied carbon, water usage, recyclability, supply chain impacts, and lifecycle costs—all grounded in industry standards like EN 15804 and ISO 14040/44. This skill transforms material selection from intuition-based guessing into data-driven specification, producing analysis outputs ready for client presentations, value engineering discussions, and regulatory compliance documentation.
by az9713
You can accelerate HVAC design workflows by inputting building parameters—envelope characteristics, occupancy data, climate conditions, and existing systems—and receiving calculated heating/cooling loads, equipment sizing recommendations, and zone-by-zone analysis. Claude organizes complex building data into actionable design parameters and specification summaries for client review, permit submission, and professional validation against ASHRAE and ACCA standards.
by az9713