Flood embankment
A flood embankment is traditionally an earth wall used to shore up flood waters.
Most flood embankments are between 1 metre and 3 metres high. A 5 metre high flood embankment is rare.
Modern improvements to this design include constructing an internal central core made from impermeable substance like clay or concrete, some even use metal pilings.
Some authorities call man-made structures levees.
some flood embankments are designed to overtop
example clifton,rawcliffe and poppleton ings
If any weakness is detected under strong water pressure, the compromise
is soon exacebated
When the structure has moved of its axis causing an exposed area to be washed away
When the structure has moved sideways exposing the foundation to erosion
as well as allowing gaps in between the structures
When water infiltrates under the structure. This is caused by burrowing animals
like dogs, beavers,badgers and otters
When water finds its way under the structure and collects on the other side.
A central core is normally designed in to prevent piping
A flood embankment of 2.5 metres high requires an outreach of 15 metres, which makes it unsuitable in some areas.
To prevent seepage through the embankment a central core is added to acquire stability and integrity.
Clifton, Rawcliffe, Poppleton and Leeman ings in York
This is an animation showing a flood event overwhelming neighbouring properties and the added construction of a flood embankment and flood warning and protection status.
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Wikipedia