There is a requirement of the factor of safety of each of the above cases. Overturning, sliding, bearing, slope stability failures, etc are checked in the stage. The stability of the wall is checked in the serviceability limit stage based on the applied loads. Stability analysis – Design in Serviceability Limit State.There are two-stages for the design of a retaining wall. Soil cut could be sloping or vertical depending on the nature of the construction. It is a structure built from concrete, random rubble masonry, precast blocks, etc to retain earth and to provide the stability to a soil cut. However, as discussed in the latter part of this article, there are many causes for the failures of a retaining wall. Retaining wall failures are commonly observed in hilly areas due to the slope stability issue. You come across pretty good stuff at very reasonable prices, in the region of US$ 300.The retaining wall is a critical structure that provides the stability to the embankment. One commercial product which advertises probabilistic and reliability capabilities is Rocscience's Slide5. One advantage of spreadsheets over most commercial software though is that, by means of macros or commercial add-ins (or by approximation methods such as the one described by Mike Duncan) you may carry out a probabilistic stability analysis. I too suggest a commercial software, today they're pretty much inexpensive. And you are supposed to do it for tens of circles! As far as the iteration goes, spreadsheets like Excel do have iteration capabilities, and I applied them in this specific case of figuring out the stability safety factor.īut, with the exception of relatively simple models, slope stability spreadsheets can really drive you nuts, expecially so when applying the Bishop method, locating the failure circle(s) and assigning the strenght parameters along its lenght.
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