Staircase Construction Detail with Riser Tread and Landing Layout

Staircase construction detail CAD drawing showing architectural stair layout with step arrangement, riser height, tread depth, landing platform, and structural alignment for building circulation. The drawing presents clear stair planning with sectional and plan views that illustrate vertical movement between floors within a building. Important staircase components such as tread, riser, and nosing are shown to define step structure and walking surface geometry. The stair design follows typical architectural drafting principles where each step maintains consistent rise and tread dimensions for safe and comfortable movement between levels.