This photo shows the specific codes that need met when adding a spiral staircase to any space.

This photo shows the specific codes that need met when adding a spiral staircase to any space.

Google Image Result for http://chestofbooks.com/architecture/Modern-Buildings-Construction-V5/images/Stone-Stairs-187.jpg

Google Image Result for http://chestofbooks.com/architecture/Modern-Buildings-Construction-V5/images/Stone-Stairs-187.jpg

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