Stair Part CAD Design Drawing with Curved and Straight Sections

This Stair Part CAD Design Drawing is a professionally developed AutoCAD DWG file created for residential, commercial, and public building staircase planning. The drawing includes detailed layouts of curved stair segments, straight flight sections, landing blocks, railing supports, step arrangements, and connection joints. It provides accurate dimensions, tread and riser proportions, turning radii, and alignment references for safe and efficient vertical circulation design. These stair components are suitable for use in apartments, offices, malls, hotels, and institutional buildings.