Check out this detailed 45 X 25 feet building floor plan with column layout and slab reinforcement details. Perfect for your architectural projects.In the Categories list, select the Maps and Floor Plans category. Select Floor Plan, and then select Create. The Build a Residential Accessory Building guide provides step-by-step instructions for residents living in Wake County's unincorporated area. This video discusses the Column Layout plan of a 20x35 house.