Wood Structure Design AutoCAD DWG with Wooden Steps and Layer Detail

This wood structure design AutoCAD DWG file presents a detailed construction drawing focused on wooden steps and layered flooring system development. The layout includes timber stair components with an average tread width of 280 mm and a riser height of approximately 170 mm for comfortable movement. The drawing illustrates structural wooden beams, step supports, and fixing methods with accurate spacing and alignment. It also shows bituminous waterproofing layers, bitumen coating thickness of nearly 3 mm, and gravel bedding layers of about 40 mm for moisture protection and load distribution. Each material layer is clearly marked with standardized hatching, symbols, and dimensions for professional documentation and construction accuracy. This wood structure design drawing supports durable and weather-resistant flooring and stair construction. The file also features sectional views explaining complete layer buildup, including a base concrete slab of 120 mm, an insulation layer of 25 mm, wooden decking of 30 mm, and a protective surface finish. Drainage slope of approximately 1:60 is maintained for water flow control.