Spiral stairs:  Similar to previous one except that the radius of curvature is small and the stair may be supported by a centre post.  Over all diameter range from 1-2.5m - Study24x7
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soyab khan
01 Jan 1970 05:30 AM study24x7 study24x7

Spiral stairs:  Similar to previous one except that the radius of curvature is small and the stair may be supported by a centre post.  Over all diameter range from 1-2.5m

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