Detailed Residential Staircase Plan and Section Drawing with 21 Steps

This AutoCAD DWG file presents a complete residential staircase design with a detailed floor layout plan (Denah Tangga) and sectional drawing (Potongan Tangga). The drawing clearly illustrates a reinforced concrete staircase consisting of 21 steps with a total vertical height of 3.78 meters, making it suitable for standard residential floor-to-floor circulation. The layout includes accurate tread and riser dimensions, stair width, wall support alignment, and landing placement at +1.83 meters and +3.78 meters. All measurements are clearly marked to support precise execution during construction and site coordination.

The staircase structure is designed using Ready Mix K225 or a concrete mix ratio 1:2:3, ensuring durability and load-bearing efficiency for residential use. Reinforcement details are specified with 12 mm diameter bars at 200 mm spacing, clearly shown in the sectional view for structural clarity. The finishing layer is indicated for ceramic or granite treads, providing both functional safety and aesthetic interior appeal. This editable AutoCDWG file is ideal for architects, civil engineers, interior designers, and builders working on houses, requiring accurate staircase planning and construction-ready drawings.