Albina Co., Inc., was lucky enough to be the bender/roller for a beautiful spiral staircase that graces the lobby of one of the major tech companies headquartered in San Jose, California. Albina bent the following materials for the project:

Tube Steel 3″ X 3″ X .375″ WALL A500 GR B
Channel C15 X 40# A572-50
3/8″ THICK X 24″ WIDE CORTEN PLATE
¼” THICK X 77¾” WIDE CORTEN PLATE
¼” THICK X 29½” WIDE CORTEN PLATE

The Inside stringer for the staircase was rolled to a 26’-11” radius and the outside stringer was rolled to a 32’-3” radius.