# Truss Bridge Template

Truss Bridge workflow enables you to:

* Generate a **3D model** of a Truss Bridge — including trusses, arches, hangers, cables, bearings, substructure, and deck — parametrically, and export it to dgn/dxf/ifc files.
* Create a parametric **FEA model** for the entire bridge system, including truss members, arch elements, cable elements, and supporting substructure.
* Apply **loads** for FEA:
  * Surface, line, and point loads on structural elements.
  * Dedicated truss element loads.
  * Influence-surface based live loads, braking, and centrifugal forces (HL93, Legal Trucks, Permit Trucks, Railroad Cooper E80, user-defined vehicles).
  * Wind loads on structure and wind on live load based on AASHTO.
  * Uniform temperature loads.
  * Tendon stressing for pier cap and column tendons.
  * Prestressing and pushover loads.
* Create **Staged Construction Models**:
  * Truss member erection sequence including gusset-plate bolted connections.
  * Arch element and hanger erection.
  * Cable stressing and sequential tensioning for pylon cables and truss cables.
  * Deck pouring sequence in transverse and longitudinal directions (truss-bridge specific casting configuration).
  * Deconstruct arch, truss, cable, deck, and substructure components for rehabilitation.
  * Add/remove temporary supports.
* Run **time-dependent staged construction analysis** in your web browser with creep, shrinkage, and relaxation effects.
* **Design** and **Load Rate** truss members and supporting substructure following AASHTO and Manual for Bridge Evaluation.
* Export the finite element model to LARSA 4D, CSI Bridge, or Midas for comparison with OpenBrIM.FEA.
* Generate parametric **2D drawings** (plan, elevation, framing, abutment, foundation, vertical clearance) and export to dgn or dxf.

With this workflow, whenever you modify a bridge component parameter or alignment, all associated results/reports automatically update — showcasing parametric bridge engineering in the OpenBrIM Platform.

Please refer to the following pages to understand the meaning of each parameter for each bridge component and define them accordingly.


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