Flexural reinforcement (columns seismic: ACI 318)
Columns that are part of Special Moment Frames shall have their longitudinal reinforcement extended into supporting footings, foundation mats or pile caps for a length not less than the full development length in tension.
Lap SplicesSpecific seismic requirements apply only to lap splices in compressive members that are part of Special Moment Frames.
For columns that are part of Special Moment Frames:
- lap splices are only allowed at the center half of the column
- lap splices regions should be properly confined - hoop spacing should not exceed the maximum allowed hoop spacing
Note: Both of these requirements are beyond scope in the current release of Tekla Structural Designer.