3D Spiral Stair for AutoCAD
Imperial Units

3D Spiral Stair for AutoCAD Imperial Units is a fast, easy-to-use, low-priced spiral stair creator. Enjoy the simplicity of 3D Spiral Stair, an innovative, versatile and powerful add-on for all AutoCAD version from 2000 to the latest. 3D Spiral Stair for AutoCAD Imperial Units lets you build complete, highly detailed 3D spiral stairs in your choice of style. 3D Spiral Stair for AutoCAD Imperial Units includes center post, post plate, tread supports, balusters, landing, and optional riser closure. Just specify floor height and stair diameter. You'll watch the stair being built in seconds. Available settings include 5 attractive architectural styles, several post diameters and a Maximum Riser Height feature, which the program uses for calculating the best configuration to fit your project needs.

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This is the Imperial Units version. Metric Units version also available.

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After the stair has been constructed, at the command prompt you'll see very helpful information at the design stages, such as number of risers, final riser height, height from tread 1 to tread above, and xy plane landing angle. 3D Spiral Stair is available for metric and imperial units.

• 10 styles of balusters, 3 styles of tread supports, 3 types of treads, 2 sizes of handrails.
• Optional riser closure.
• Settings chart.
• Options for post diameter and maximum riser height.
• Each element has its unique layer.
• Imperial units.
• Final model suitable for rendering.
• Imperial and Metric Graphical Tutorials.
• AutoCAD 2000+ and ADT compatible.