I have just installed Stratigrapher – Stratigraphic Columns. At start-up I get the error message ‘Screens not installed or in the wrong position’.

The message relates to the presence of the screen textures provided by GeoStru. With the software it is possible to install a library of grids for use in GeoStru software. The library, named Textures, is installed by default in the main installation directory of GeoStru software, i.e. C:/GEOSTRU xxx, in a folder renamed ‘Textures’. In…

I need some clarification regarding the calculation of the reaction modulus Ks, by default the programme uses Bowles’ method, can I have more details?

A distinction must be made between the case where Ks is constant with depth and the case where it is variable.In the former case: Ks=qa/unit subsidence where qa=qult/FS qult=limiting load FS=safety factor (2 or 3 depending on the lithology) In the second instead: Ks=40*(c*Nc+0.5*gamma*B*Ngamma)+40*(gamma*Nq*Z) Nc, Ngamma, Nq e.g. Hansen’s coefficients.