Albina Co., Inc. recently rolled 16 pieces of 5/8" plate A36 to as tight as a 162" radius. Six pieces of plate were used as the inside stringers of a beautiful spiral staircase at Altar'd State at the Forum Shops at Caesar's Palace. Six pieces of plate were used as the outside stringers of the staircase, and four pieces were used on the landings. We bent the stringers, trimmed rectangular treat cut outs, trimmed to length, match paired plates, tacked them together and match drilled all holes. We bolt matched the plates together with a 6 bolts, (2) on the end, (2) in the middle, and (2) on the other end.
We also bent 2½" X 2½" X ¼" ANGLE A36 to help create the spiral staircase. Materials included:
1 piece leg in to a 25” inside radius. Albina to bend 180° minimum.
1 piece leg out to a 162” inside radius. Albina to bend 70” minimum arc.
1 piece leg out to a 30” inside radius. Albina to bend 36” minimum arc.
1 piece leg out to a 19” inside radius. Albina to bend 80” minimum arc.
1 piece leg in to a 38” inside radius. Albina to bend 180° minimum.
Lastly, we bent one piece of Flat Bar 5/8" x 12" A36 UM Plate leg in to a 38” inside radius and 180° minimum.
