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Global check - Step 1a:
Channel depth: H = 14.008 15 m
Marge = 2 H = 28.016 m 30m
Slope of the observation profile: 1:15
Assessment level: Z = -10 .331 m
XSsign (1.904 -10 m) < XSzv (40.943 50 m) => Flow slide would lead to damage on levee => Go to step 1c.
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Global check - Step 1d: The average slope over a height of at least 5 m is 1:3.901 6 so steeper softer 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 1:6, 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 fails (even if the Detailed check passes) because the criteria on "steepest slope over 5 m" is met, an Advanced check is therefore needed.
Case E:
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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