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NOTE: in the current version of the program, it is not checked if the thickness is minimal 5 m. The average is performed over a thickness of 5 m, by not taking into account the none-sandy layers.
Step 7: Is
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breaching possible?
This criterion corresponds to step 5 of CUR Aanbeveling 113, 2008.
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If so then the slope is breaching sensitive, so the check FAILED, so a Detailed check is needed. In the case the slope height is over 40 m a Detailed check is also needed.
if not then the check SUCCEDDEDSUCCEEDED.
Different cases are considered to determine the critical slope:
- a slope with or without flat banks
- for medium fine sand with D50 > 200 μm and D15 > 100 μm
- for sand with coarse sand and gravel with D50 > 500 μm and D15 > 250 μm
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(a) In D-Flow Slide, the ground surface level (GL) (maaiveld in Dutch) is the lowest level between the water level and the top of the channel slope (called "Insert river channel").
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