Spiral Stairway Step Detail with Plan Section and Dimension Layout

This AutoCAD spiral stairway step detail drawing presents a clear spiral stairway step detail with a plan section and a detailed component layout used in circular staircase construction. The drawing illustrates the spiral stairway step detail, where each step is designed in a triangular radial shape connected to a central circular column support. The plan view explains the geometry of the stair steps arranged around the central column forming the spiral stairway configuration. The drawing also includes material specification and dimension information, such as a step length of approximately 720 mm, radial step width around 450 mm, and inner connection around 250 mm linked to the central column of approximately 75 mm diameter. Wooden stair steps, structural supports, and connection members are illustrated to show the construction arrangement of the spiral stairway system.