> For the complete documentation index, see [llms.txt](https://enercalc.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enercalc.com/docs/sel-user-manual/calculation-modules/walls/shear-walls/wood-shear-wall/aspect-ratio-adjustment-option.md). # Aspect Ratio Adjustment Options How NDS aspect ratio adjustment factors apply to wood structural panel and fiberboard shear walls. ## NDS Aspect Ratio Adjustment Options NDS is clear that Wood Structural Panels must have an aspect ratio adjustment factor applied when the aspect ratio (h/b) of the effective panel is greater than 2. Structural Fiberboard panels must have an aspect ratio adjustment factor applied when the aspect ratio (h/b) of the effective panel is greater than 1. NDS also provides an exception to the normal adjustment formulas that allows the designer to distribute shear to multiple panels in a wall in proportion to the individual shear capacities of the full height segments (as opposed to proportioning in terms of stiffness). As of 7/24/2023, the Wood Shear Wall module does not have the ability to consider stiffness. So in walls with openings, it may make sense to use the exception to avoid having to do additional hand calculations. In walls with no openings, it may be permissible to use the standard aspect ratio adjustment (more liberal). ![](https://3283832020-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FiBJmBoewuy4ZcBC7RF3m%2Fuploads%2Fgit-blob-ea7c9657a0a6b055bd6041821542352daa23e787%2FWood%20shear%20wall%20aspect%20ratio%20logic.jpg?alt=media) --- # 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 by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://enercalc.com/docs/sel-user-manual/calculation-modules/walls/shear-walls/wood-shear-wall/aspect-ratio-adjustment-option.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.