Model # 60S

This is a standard spiral staircase that meets UBC code. The stair is 60" diameter with 30 degree treads, handrail  # 200 (1 1/2") round steel tubing. The balusters are # 302 (1") square steel tubing, four per tread, spaced less than 4" apart. The treads are # 100 (12 gauge) smooth steel plate. The center column is 4" OD .135 wall tube. The stair has a standard red oxide primer finish. The carpet overlay and final paint was done by others at the job site after installation.