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where:
H is the channel depth in case no revetment is present and H = Honbest in case a revetment is present
Hvw is the thickness of the sensitive layer(s) determined using the following criterion: if Ψ5m > -0.05 between the water line and 0.5H below the toe of the submerged slope, then the layers are considered as sensitive.
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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