> For the complete documentation index, see [llms.txt](https://docs.enercalc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enercalc.com/sel-faq/using-the-software/calculation-modules/retaining-walls/cantilevered-retaining-wall/calculation-of-factored-soil-p.md). # Calculation of Factored Soil Pressures How the Cantilevered Retaining Wall module calculates factored soil pressures for footing design. ## How does the module calculate factored soil pressures for footing design? 1. Using the service loads, the program solves for the eccentricity by dividing total the moment by the total vertical load. 2. Using the eccentricity and the footing dimensions, the program then determines which category the pressure distribution falls into, based on the extent of the pressure diagram and the location of the resultant. 3. Finally, based on the category determined above, the program calculates the toe and heel pressures. In this step, the program uses an effective factored vertical load of 1.4 times the service-level vertical loads. The factor of 1.4 is meant to be an approximation of a weighted average load factor for each of the contributing loads. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.enercalc.com/sel-faq/using-the-software/calculation-modules/retaining-walls/cantilevered-retaining-wall/calculation-of-factored-soil-p.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.