This is a post and beam system, platform framed. Vertical loads travel down posts to beams and in turn to posts on the floor below until they reach the 3 foot continuous foundation walls. The strongest winds are presumably from the West off the Pacific Ocean. The area of the west side of the house is 888 sq.ft. Wind load for this region from the Pac 104 chart is approximately 15 psf.
Flooring also braces the structural frame.