Deformation Capacity of the Jacketed Members (NTC-18)
The value for the chord rotation capacity of the jacketed members that is adopted in the capacity verifications depends on the corresponding values calculated under the requirements of section C8.7.2.3.2 of the commentary of NTC-18, adapted according to the following equations of section C87.4.2.1 of the commentary of NTC-18:
The yield moment:
The chord rotation at yield:
The ultimate chord rotation: