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Honbest is the depth of the channel below the revetment.
Mbestorting is the horizontal projection of the length of the revetment.
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In case no slope protection is present, if over the entire channel depth softening sensitive sand is present, this margin is thus equal twice the fictive channel depth (M = 2 H).
The inclined part of the observation profile in line with the horizontal portion. The inclination of the slope depends on the channel depth:
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If this occurrence criterion not met, go to step 1e.
Step 1e: Is flow slide possible based on the occurrence criterion based on average geometry?
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