Rolled Plate Creates Spiral Stair Stringers

Albina Co., Inc. recently rolled steel plate to create the spiral stair stringers for a beautiful custom curved steel staircase in California. The plate sections consisted of 1/2" x 14" A36 plate rolled counter clockwise to a 38' 8" radius and 43' 9" radius. For portions of the landing area, 1" X 14" A36 plate was rolled anywhere from a 37' 7" radius to a 42' 6" radius. Various other structural steel members were bent including 4" X 4" X ¼" ANGLE A36 rolled legout to a 37' 6" radius. [caption id="attachment_683" align="aligncenter" width="300"] steel spiral stair stringers from rolled plate[/caption] [caption id="attachment_684" align="aligncenter" width="200"] steel spiral stair stringers from rolled plate[/caption]