Post and beam floor type

[Jeff_Rapp]

The only way I can find to do a post and beam floor type (which is common in NZ) is using a deck floor. Worked but as the attached plan shows, the three floors are at different elevations and the walls in the passageway don't fill all the way down to the floor. I am probably missing something simple when using multi floor levels. You guys helped me big time when doing a similar thing but using slab floors. Using deck floors is stumping me.

anne1.plan