Confinement reinforcement for ductility (beams seismic: ACI 318)

Tekla Structural Designer
2021
Tekla Structural Designer

Confinement reinforcement for ductility (beams seismic: ACI 318)

Reinforcement Type

Confinement reinforcement should consist of hoops, i.e. closed or continuously wound ties with a seismic hook at each end.

Detailing Regions

Confinement reinforcement is required to be provided over the following confinement regions in beams that are part of Intermediate and Special Moment Frames. This is not a requirement for beams that are part of Ordinary Moment Frames

  • Support regions: These are probable flexural yielding regions flexural yielding regions next to beam-column joints
    Note: Beam-wall moment frames are beyond scope in the current release of Tekla Structural Designer.
  • Non-reversing plastic hinge regions: These are probable flexural yielding regions outside support regions.
    Note: Non-reversing plastic hinge regions are not identified in the current release of Tekla Structural Designer.
  • Lap splices: Over the full length of lap splices in members that are part of Special Moment Frames

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