Plastic Bending of Portals

This product helps students to understand the nature of plastic deformation in hot-rolled mild steel portal frames that can undergo large plastic deformations. Similar frames at real-scale form parts of buildings with large internal spaces such as factories or warehouses.

Learning Outcomes

  • Elastic bending to plastic deformation of portal frames
  • Collapse load and the formation of plastic ‘hinges’
  • Yield stress
  • Deformation due to single and combined loads on a portal frame
  • Generating an interaction diagram
  • Shape of a collapsed portal due to hinge formation
  • Introduction to limit state design
  • Shape or form factor and the additional factor of safety it provides


  • Vertical and horizontal load and measurement for increased experiment range
  • Includes a set of specimen portals for ‘out of the box’ experiments
  • Additional pack of specimen portals available
  • Industrial, high-resolution digital deformation indicators for accurate results
  • Includes Vernier caliper for cross-section measurement
  • Supplied with a storage tray to keep smaller items safe
  • Works with user-friendly software (VDAS®)
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For more information or to contact Buckeye Educational Systems, your Authorized TecQuipment Reseller, call 800.522.0460 or email