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This page is devoted to frequently asked questions (FAQ) related to solids.

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Table of Contents


Are solid objects with less than eight nodes available?

Answer: Yes, degenerate solids are available, which are solid objects with collapsed (duplicated) nodes. These solids have less than eight nodes, and are useful for modeling wedges and tetrahedra. Joints may be collapsed in a variety of ways. An error message will report any creation of an illegal solid object.


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Related Emails and Incidents:

  • Email Degenerated solid elements: Degenerated solid elements are supported in SAP2000 (rs → ok, 1/20/2011, ID 6357854)
  • Incident 31566: Document degenerated solid elements

How are solid objects drawn in SAP2000?

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  1. Extrude area objects by using Edit > Extrude.
  2. Define solid objects directly by using interactive database editing to modify the Connectivity - Solid table, available through Edit > Interactive Database Editing > Model Definition > Connectivity Data > Object Connectivity > Table: Connectivity - Solid.


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Related Incidents:

  • Incident 34404: Incompatible modes for solid elements
    • Email Incompatible modes for solid elements: (ok → tfg, 4/28/2011, ID 7635440)

Why are red springs automatically generated on my solid objects?

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See the Solid elements and rotational degrees of freedom at their joints article for additional information on why the joints need to be restrained from rotation.


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Related Incidents:

  • Incident 36428: Red springs for joints of solid elements.
  • Incident 42797: Edge constraints for solid elements.