Community Tip - You can change your system assigned username to something more personal in your community settings. X
While searching around, I run into a posting under the following link. Would someone help to locate the Mathcad files?
https://community.ptc.com/t5/PTC-Mathcad-Questions/Boussinesq-Revisited/m-p/405553#M158998
Try to contact him directly.
The email address also appeared here: https://community.ptc.com/t5/PTC-Mathcad-Questions/Eurocode-engineering/td-p/390049