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ACI318-02 amplify seismic loads for SDC D special reinf moment frames?

ACI318-02 amplify seismic loads for SDC D special reinf moment frames?

ACI318-02 amplify seismic loads for SDC D special reinf moment frames?

(OP)
Does anyone know if ACI318-02 Chp 21 requires amplification with omega (NOT rho)...

In other words, for my SMRF, do I use(omega * QE +- 0.2 SdsD) for:

1.  columns of the SMRF
2.  beams of the SMRF

Thanks...I can't find anything explicit in ACI318-02!

RE: ACI318-02 amplify seismic loads for SDC D special reinf moment frames?

No, it is not required to use Omega factor for designing beams and columns of an SMRF. If you have a column supporting a discontinuous shear wall or braced frame, then those columns have to be designed for overstrength factors.

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