> 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/zero-values-on-stem-tab.md). # Zero Values on Stem Tab Why retaining wall stem moments and shears show zero and how to set stem design heights correctly. In the stem design, my moments are shears are zero even though I have entered a retained height and active pressure. Check to see of the "design height" was entered as the retained height (thus asking the program for moments and shears above that point - leading to the zeros). There is never any meaningful purpose for specifying the top of a wall as a stem design height. Instead, set a stem design height at the base of the stem, and at other elevations of interest below the top of the wall, such as at changes in stem thickness, or at rebar cutoff locations, etc. --- # 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/zero-values-on-stem-tab.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.