Sonata West MOB II, Winter Garden, FL. The project is a 48,000 SF 2-story shell medical office building. The structure will be precast concrete panels or reinforced masonry walls at perimeter, interior columns, structural steel, steel joists and metal deck. The 2nd floor will be composite steel beams or composite joists, composite metal deck, headed studs and concrete topping. Roof will have steel joists, steel beams and metal deck.