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flexible retaining wall

flexible retaining wall

(OP)
Which loading case:

(a)After construction of the canal but prior to filling with water. In this case there is no water table present in the embankment.
b). When the canal is full of water and some steady seepage into the embankment is established, giving the water table shown in Figure 1.
c). When, after a period of use, the canal is drained for maintenance and the water table in the embankment coincides with the base of the canal.

is most critical for the design of the sheet piles?

RE: flexible retaining wall

There is no attachment showing.

However, it seems to me that 1 and 3 are thevsame, and most critical.

Mike McCann, PE, SE (WA)


RE: flexible retaining wall

the most critical is case d

case d) Rapid Drawdown - the canal is drained quickly, the embankment is saturated and the water level in the canal is low

RE: flexible retaining wall

I second CVG. It would be similar to option 3, but in a short term. You need to evaluate the embankment under rapid drawdown, in which the soil is saturated up to the original water table, along the face of the wall, and extending out from the toe along the bottom of the canal.

RE: flexible retaining wall

(OP)
Well I have been told loading case A is the most critical condition, because of "non seepage condition" but I dont understand it!!

Like "msquared48" said loading case A and C is very much similar.

RE: flexible retaining wall

rapid draw down is much worse than end of construction case. it is short term loading, but it happens periodically during canal dryup (much more frequently than the end of construction case which only happens once) and definitely needs to be evaluated.

RE: flexible retaining wall

(OP)
Thanks to all.

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