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1. Structural Element

   Linked via "Roller Support"

   Pinned (Hinged) Connection: Allows rotation about all axes but prevents translation. In idealized analysis, this connection transmits no moment between members, simplifying the structural model to determinate analysis.
   Fixed (Rigid) Connection: Prevents all relative translation and rotation. This forces moment continuity, rendering the structure statically indeterminate and requiring more comple…