> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/templates/truss-bridge-workflow/superstructure-tb/cable-elements-tb/truss-cable-tb.md).

# Truss Cable \[TB]

A truss cable is a straight cable member that frames between two Truss Insertion Points. Unlike pylon-anchored cables, the truss cable is used to connect two nodes of the truss directly and is modeled as a cable (tension-only) finite element.

## General

**Insertion Points:** The two Insertion Points defining the start and end of the cable. Exactly two insertion points must be picked from previously defined Truss Insertion Points. The user must provide a value.

**Section:** Cross section assigned to the cable. Use a section previously defined under **Properties > Sections** or import a new one. The section area and material control the cable's axial stiffness and weight.

## FEA

**Mesh Size:** Maximum distance between finite-element nodes along the cable. Smaller values refine the cable discretization; larger values reduce solve time. Used by the FE line-mesh generation.


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