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Case E:
Global check - Step 1a:
Channel depth: H = 15 m
Marge = 2 H = 30m
Slope of the observation profile: 1:15
Assessment level: Z = -10 m
XSsign (-70 m) < XSzv (30 m) => Flow slide would lead to damage on levee => Go to step 1c.
Global check - Step 1c: The foreland is natural => Go to step 1d.
Global check - Step 1d: The average slope over a height of at least 5 m is 1:2 so steeper than 1:4 => Flow slide is possible based on criterium "steepest slope over 5 m" => Go to step 1e.
Global check - Step 1e:
The slope channel is 1:6, 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) => Breaching is not possible.
But the total slope is 1:6 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.
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