Design charts for lateral deflection of embedded cantilever walls in unsaturated Perth sands

Although single level basements are employed extensively in the dune sands of Perth's suburbs, there is little guidance available to assist estimation of lateral deflections of the embedded walls usually used. This paper uses the finite element method to extrapolate data measured in an instrumented full scale cantilever contiguous pile wall to a wide range of retained heights, sand properties and wall flexural rigidities. These results are presented in the form of design charts to assist rapid estimation of wall deflections. These charts are also known to be suitable for assessments of deflections of buttressed piled cantilever walls, which offer an attractive alternative to propped or anchored walls.