> 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/e3d-training-manual/building-the-model/properties/properties-for-members/sections.md).

# Sections

How to define member sections and assign their analysis properties using the Sections table.

Member Sections consist of the properties necessary for structural analysis, such as section properties and dimensions.

Member Sections can be defined and assigned using the *Sections* table, which can be accessed by clicking **Create (or Modify) > Member Properties > Sections**, or by clicking **Tables > Sections**.

![](https://3750289988-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlRZtG5Ynp58kYzLHYbR7%2Fuploads%2Fgit-blob-9acc7d776794bb721550d7c3c2b66710114f4668%2FSections%20table.jpg?alt=media)

Regardless of how the table is accessed, it allows the user to create section definitions and to assign them to currently selected members.

Note that there are some convenience buttons at the bottom of the table:

Regular Section: allows for the quick definition of many standard section shapes, such as Rectangle, Round, Wide Flange and Tee.

**AISC Table:** opens a table of standard AISC steel sections.

**NDS Table:** opens a table of standard NDS wood sections including sawn lumber and glulam shapes.

**Rigid Link:** allows for a way to create a "section property" definition that behaves as a completely rigid link when assigned to members in the model.


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