Vertical Distribution - hill side structures and/or multi-level roofs

[Tahoebrian5]

I'm interested to see some of the forum member's thoughts on how to handle vertical distribution of seismic loads (AISC 12.8.3) for a couple of odd scenarios.

Scenario 1) buildings that are cut into a hill side. I am currently in progress on a single family residence that is 3 stories on the tall side, but two stories plus basement on the uphill side. The lowest floor on the uphill side is mostly buried and has a retaining wall, but then has two wood framed stories above.

Scenario 2) Buildings that have a partial upper floor and the roof starts at the upper floor but then slopes down to become the 2nd level roof on one side of the building.

What I have done in the past for scenario 1 is run the vertical distribution for the uphill side as a two story, then run it as a 3 story on the downhill side. This seems to make sense to me but I am interested to hear some opinions.

Scenario 2 is giving me a headache.

The project I am currently working on has both scenarios. This is in SDC D and high snow loads which result in fairly high seismic loads.

Thanks for your thoughts!