OpenSite/Reference/Features/Rectangular section example: Difference between revisions
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__NOTOC__ | __NOTOC__ | ||
{{OpenSite scope}} | |||
{{BathAfrica Feature | {{BathAfrica Feature | ||
|id=document.rectangular-section | |id=document.rectangular-section | ||
|summary=Compute area and centroidal second moments of a solid rectangle. | |summary=Compute area and centroidal second moments of a solid rectangle. | ||
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== Try this workflow == | |||
[[OpenSite/Guides/First document|First document]] — a worked lesson with expected results. | |||
== Documentation basis == | == Documentation basis == | ||
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[[OpenSite|OpenSite overview]] · [[OpenSite/Reference|Reference]] · [[OpenSite/Guides|Guides]] | [[OpenSite|OpenSite overview]] · [[OpenSite/Reference|Reference]] · [[OpenSite/Guides|Guides]] | ||
[[Category:OpenSite documentation]] | [[Category:OpenSite documentation]] | ||
<div class="os-page-nav">{{Docnav|OpenSite/Getting started|OpenSite/Guides|OpenSite/Guides|All guides}}</div> | |||
Revision as of 14:00, 29 October 2026
Compute area and centroidal second moments of a solid rectangle.
- Stable identifier
document.rectangular-section
Status reported by source
Implemented in the reviewed development source. Historical test evidence is recorded by the repository; no test rerun or product release is claimed by this publication.
Units
Width and height are lengths. Area is m². Ixx and Iyy are m⁴. For width 0.30 m and height 0.60 m the area is 0.18, Ixx is 0.0054, and Iyy is 0.00135. The absolute tolerance used in tests is 1e-12.
Behavior
Local x follows the width, local y follows the height, and local z follows the member so that x cross y points along z. Ixx is width * height³ / 12. Iyy is height * width³ / 12. Editing an input marks the derived values and recomputation updates them inside a transaction.
Errors
Non-positive or non-length inputs are rejected. Derived properties are not editable inputs.
Limitations
This is a document-engine demonstration. It is not the section-design plugin, not a design-code check, and not a statement about global structural axes.
Available hosts
Document engine, CLI, embedded Python and the desktop section/document workspace on Windows.
Licensing and access
This OpenSite document calculation is not a licensed design standard. The legacy document.create_section command uses document.edit; ordinary desktop workspace commands may use document.workspace.
Verification evidence
Repository evidence references (not rerun for this publication): CTest document.section_reference. ADR-0012.
Try this workflow
First document — a worked lesson with expected results.
Documentation basis
Source-reviewed against development commit 77c3fee13944bcc4b5d487c77eb1f82fbe4c6ea7, branch feature/phase-13c-properties-python-expressions. This review inspected the implementation and repository evidence; it did not run the Windows application or repeat CTest.
src/document/section.cppsrc/application/builtins.cpp
