Two current ideas:

1. a simple proportioning of the contributions to a point's displacements based on how many sides contribute, if 2, then each 50%, if 3, then each 30% etc. But may also need consideration for the angle. Simple geometrical solution (with warning) if nothing better received.

2. a geometric solution which could be coded and compared to finite element analysis.

Same ideas can apply to changes in ground movement curve between one wall and another.

We would like to be able to model piles in Slope, with specified mobilised shear resistance across the failure surface. This would ideally (in future) be linked to a mobilised shear-displacement profile for each pile derived from Alp. The mobilised shear can be specified apriori for the pile or pile group, or determined from Newmark Sliding Block analysis with the shear-displacement curve. Get in touch for details.

Provide interpolation of imported displacements for the case where the imported displacement points do not coincide with the points already in the data file.

Ignore displacement points within tunnels (just as within excacations)

When constructing a pile with temporary casing, the pile diameter through the cohesionless (cased) soils is much greater, resulting in an increased shaft area and thus capacity.

Currently Pile can only specify one (the minimum) pile diameter.

It would be very useful to enable a check that the characteristic pile shaft resistance is greater than the characteristic pile action.

i.e. a factor of >1 on the shaft capacity alone

Summaries of all results for all stages required (i.e. worst cases of any and all stages). (Enveloping.) Database?

Pile currently treats soils in two broad catergories: drained and undrained, the drained soils have only an angle of friction and the undrained only the undrained cohesion. It would be nice if c-phi soils (e.g sandy clays, clayey sands) can also be considered.

Specify displacement grid by centreline start and end points, width of grid and frequency of transects (then allow results to be displayed for grid lines in both directions?)

Export rail damage assessment location data as Displacement Points for PDisp analysis

Pdisp is often used to derive subgrade reaction stiffnesses for input into GSA by manually dividing the applied pressure by the settlement results to calculate the equivalent subgrade reaction springs. The conversion could be built into PDsip itself and a subgrade reaction contour could be plotted. There’s a possible automation linkage with GSA.