Dick, I have a pavilion type frame that is one story with no walls. The joinery will be traditional timber joinery except there will be cable cross bracing in between the bents in the longitudinal direction and timber cross bracing within the bents. However, this bracing is only in the top quarter of the frame height. From there down there is no bracing. This creates somewhat of a rigid frame effect in that it places the posts in bending at the lower level of the bracing.

Since the timber frame is the only weight in consideration for the seismic loading, no floor, no walls & light roof, the seismic loads should be fairly low.

I don't think this will fall into a moment-resisting frame or a braced frame, especially since the IBC references steel moment frames and braced frames.

I know you are reluctant to recommend an R value for traditional timber frames, but this one is different in that it is partially braced with cross-bracing at the frame. Any suggestions?

Thanks