(Tigard, OR)  --  One person is being treated for injuries, following a building collapse in Tigard.  The collapse happened around two o'clock yesterday afternoon at Kayu International on Southwest Greenburg Road.  Officials say a forklift crashed into a structural support post, resulting in a partial collapse of the building and minor injuries to the forklift operator.  The 15-thousand-square-foot building was evacuated as a result of the mishap.