This stair is an example of our standard fully assembled
spiral installed without a landing. It is 52" diameter with
27 degree treads with a mounting plate at the finish floor
at the top. This stair is easy to install and can be
assembled in a few hours. The handrail is # 200 steel (1½"
round tubing). The baluster are #302 (1" square tubing) and
the treads are smooth 12 gauge steel. The center column is
4" OD .135 wall round pipe tube. The finish is a standard
semi gross black paint applied at job site by owner. The
only spiral application not requiring a landing is an
installation on an outside corner. In ordering a stair
without a landing, special care should be taken to determine
that there will be sufficient headroom.