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| Case | Step 1a | Step 1c | Step 1d | Step 1e Average slope | Step 1e Breach flow | Step 1e | Global check | Detailed check | Overall result | Warning message | Information message | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | No | Pass | Pass | Warning | D50 < 200 μm in the Detailed check, Advanced check needed | |||||||
| B | Yes | Yes | Fail | Fail | Fail | Artificial foreland, Advanced check needed | ||||||
| C | Yes | No | Yes | Fail | Fail | Fail | Criteria on "steepest slope over 5 m" met, Advanced check needed | |||||
| D | Yes | No | No | Yes | No | Yes | Fail | Pass | Pass | |||
| E | Yes | No | No | Yes | Yes | Yes | Fail | FailPass | Fail | Warning | D50 < 200 μm in the Detailed check, Advanced check needed | |
| F | Yes | No | No | No | Yes | Yes | Fail | Fail | Fail | |||
| G | Yes | No | No | No | No | No | Pass | Pass | Pass | |||
| H | Yes | No | No | No | No | No | Pass | Fail | Warning | Global passes but Detailed fails, check input |
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Global check - Step 1d: The average slope over a height of at least 5 m is 1:5 so steeper than 1:4 => Flow slide is not possible based on criterium "steepest slope over 5 m" => Go to step 1e.
Global check - Step 1e:
The slope channel is 1:5, so the slope is softer than the critical (local) slope from the CUR table (not too fine sand with D50 = 230 μm and D15 = 130 μm) D50 = 180 μm < 250 μm => Breaching is not possible.
But And the total slope is 1:6 5 so steeper than 1:7 => Flow slide is possible based on average slope => Global check fails.
Detailed check: (see table below for intermediary results) Probability of flood damage by liquefaction < Allowable probability of failure => Detailed check passes.
Overall check: the Overall result passes.
Global check - Step 1: Same results as benchmark 1-1 (flow slide would lead to damage on levee) => Go to step 3.
Global check - Step 3: The foreland is natural => Go to step 4.
Global check - Step 4: The slope channel is 1:6 so steeper than 1:7 => Flow slide is possible based on geometry => Go to step 5.
Global check - Step 5: The state parameter is -0.06 so less than -0.05 => Liquefaction is not possible based on the state parameter => Go to step 6.
Global check - Step 6: The average diameters over a thickness of 5m are D50 = 180 μm and D15 = 130 μm. So layers are present with D50 < 200 μm and D15 < 100 μm => Global check fails and Detailed check needed.
Detailed check: (see table below for intermediary results) Probability of flood damage by liquefaction < Allowable probability of failure => Detailed check passes.
Overall check gives a Warning message because D50 < 200 μm , an Advanced check is therefore needed.
Overall check: as Detailed check passes, the Overall check passes.
Case F:
Global check - Step 1: Same results as benchmark 1-1 (flow slide would lead to damage on levee) => Go to step 3.
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