This staircase begins by drawing the inner radius on the floor.

The new addition, which was octagon,

created somewhat of a challenge

in the fact that the outer diameter

lay against it.

A CAD drawing was created to help guide

the way.

The transition from radius to octagon.

Next forming the railings and setting the posts.

The project also involved double doors

below the balcony, which had to follow

the radius of the wall.

The treads and upper edgings were created using templates.

The finish.