Efficient Stair Plans

Photos and plans of smallest stairs that comply with building codes.

The drawings show three options for stairs to climb 9′-0″.

A) Spiral stair – compact and efficient plan saves space in small and infrequently used places. Check with the local building department for exceptions, but the current residential construction codes permit these as long as they conform to certain dimensions. This shape makes carrying furniture and packages difficult.

B) Straight run – most efficient use of space and easiest to build. This shape allows for easy moving of furniture.

C) U-shape – best design if the top and bottom landings have to stack. The landing must be as deep as the stair is wide.

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