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Summary of Error Codes

When a safety factor cannot be calculated for a slip surface, Slide3 will write an error code to the output file, rather than a safety factor. These error codes are NEGATIVE numbers such as –101, -102, -103 etc. The figure below shows an example of some of the error codes you may encounter while running the analysis.

Error Codes Dialog

These error codes are displayed when you select: Interpret > Show Error Codes.

The meaning of these error codes are summarized below.

Error Code

Explanation

-97

Factor of safety is out of valid range set by user.

-99

Slip surface intersects through an infinite strength material.

-111

Safety factor equation did not converge.

-113

Surface intersects outside search limits.

-114

Surface with reverse curvature.

-115

Surface depth is not within the user defined min/max values.

-121

Concave failure surface. Only convex slip surfaces are allowed.

-127

Weight of slipping mass is not within the user defined min/max values.

-128

Volume of slipping mass is not within the user defined min/max values.

-129

Columns fall outside of the search limits.

-130

Too many failed attempts to create a valid surface. To see most common error types check Interpret>Show Error Codes.

-131

One or more columns had base points that were not within the soil model.

-132

Error in discretization - No active columns.

-134

Error in discretization - Too few active columns.

-135

Can not interpolate discrete strength function.

-136

Surface elevation violates the user define cutoff(s).

-137

Axis of symmetry is not passing through search limits.

-139

Non-spherical Auto-Refine Search not supported. Change the Surface Type to Spheres in the Slip Surface.

-140

None of the grid points in Auto Refine Search produced a valid slip surface. To see a list of error codes check Interpret > Show Error Codes.

-141

Surface elevation below external geometry. You may try external geometry composite surface option.

-142

Wedge persistence exceeding the user-defined limit.

-143

Failed to form a valid wedge slip surface.

-144

No search planes defined for multi-planar search.

-145

Failure mass has invalid boundary columns.

-150

Surface intersects outside search limits (gridpoint discretization)."); } break;

-151

Surface does not intersect specfied Intersects search limit."); } break;

-152

Surface intersects outside search limits (edge of slip surface)."); } break;

-153

Surface touches edge of model limits."); } break;

-200

Factor of Safety <= min iteration value. Could mean 0 Normal/Shear resistance along part of the slip surface.

-402

Unable to compute factor of safety due to symmetric forces/moments canceling out each other along X/Y axes.

-403

Could not compute initial failure direction, possibly flat ground surface.

-404

Computed lambda values outside specified range in the advanced project settings.

-405

Nonlinear equation solver failed to find a solution.

-406

Failed to compute factor of safety.

-407

Iteration of the intercolumn lambda value failed to find a solution.

-408

Iteration of the failure direction failed to find a solution.

-409

Failed to compute a shear force given a normal force.

-410

Computing a negative factor of safety.

-411

Too much tension, amount of tension exceeds the limit defined in the advanced options.

-412

Iteration of Ky did not converge.

-413

A column base angle exceeds the limit in the advanced project settings.

-700

Surface Altering Optimization failed to converge.

-800

Not enough memory available to perform the computation.

-900

Failed to successfully extract external boundary polyline. This indicates likelihood of invalid computation

-901

3D geology structure with zero volume detected.

-902

Non-manifold 3D geology structure (open polyhedron) detected.

-1000

No valid slip surfaces generated to compute factor of safety. Check Interpret>Show Error Codes dialog for further details.

1000

User aborted computation.

0

Unknown error.

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