Algorithm to Calculate Soil Wedge Area, Weight, and Centroid Behind a Retaining Wall

[Eng_ReyD_497]

This is a clarified follow-up to a previously solved question. The new objective is to compute the soil wedge area, weight, and centroid (CGx, CGy) behind a retaining wall using the mathematical approach described in the attached Mathcad files, and input data is already explained in the attachment. I am using Mathcad Prime 11. Any help would be appreciated.

[terryhendicott]

Here is something I used to use to find the log spiral failure surface behind the wall for the active and passive horizontal and vertical pressures.

Cheers

Terry