Spiral Staircase Plan and Elevation CAD File with 1200mm Width

This Spiral Staircase Plan and Elevation CAD File with 1200mm Width provides a complete staircase drawing solution for residential and commercial projects. The drawing includes detailed staircase CAD layouts, spiral staircase plan views, curved stair alignment, landing positions, handrail fixing points, and sectional elevations. It is prepared with accurate construction measurements such as 1200mm clear stair width, approximately 160mm riser height, 280mm tread depth, and 1800mm turning radius. The file also contains step numbering, floor level markings, structural support details, and railing connections, making it suitable for professional staircase drawing and staircase elevation CAD requirements.