Tag Archives: Curved Steel Stair Stringers

Staircase Modeled After the Helical Structure of DNA takes Center Stage at New Biotech Facility

Albina recently bent various parts for an interconnecting spiral staircase, modeled after the helical structure of DNA, at a new 1.6 million sq ft biotech campus in the Bay area.Materials: 1″ OD X .120″ WALL T304 S/S #4 FINISH, 1½” OD X .120″ WALL 304 S/S #4 FINISH and 1½” OD X .180″ WALL 304 S/S #4 FINISH
All railings and returns bent by Albina (flat rolling and spiral rolling).

Materials: PL 1″ THICK X 14″ WIDE A572-65, PL 1″ THICK X 6.375″ WIDE A572-65
Materials: 2½” X 2½” X 3/8″ ANGLE A36, 2″ X 2″ X ¼” ANGLE A36
All misc. stair parts bent by Albina to various configurations.

Materials: PL 1″ THICK X 14″ WIDE A572-65
All Ribbon Helixes bent by Albina to a 3’-0” plan view radius (spiral rolled the easy-way).

Ribbon Helix Spiral Staircase

Spiral Staircase Graces the Lobby of San Jose Headquartered Tech Company

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.

Final Install Pictures of Curved Steel Circular Staircase for the New American Airlines Headquarters in Fort Worth, Texas

Thanks to Viva Railings LLC (Photo credit & Glass/Railing Fabricator) we have received some final installation pictures of the circular staircase at the “Trinity Complex”, home to American Airlines Headquarters in Fort Worth, Texas. We spiral bent Tube Steel 16″ X 16″ X .625″ WALL A500 GR B bent down to a an 18 foot radius, using our induction heating process to create the spiral stringers for the staircase. In addition to the 16″ square, we produced another set of spiral stringers consisting of Tube Steel 14″ x 6″ x .625″ wall REALLY tight, exposed and bent to a 5′-6″ radius on a 45° pitch. These are the type of bends that ONLY Albina can do! The 1.7 million-square-foot complex, dubbed the “Trinity complex,” consists of four seven-story buildings. It cost nearly $300 million to build and houses over 6,500 employees. There were 10 tower cranes on the project and more than 1,000 construction workers on-site during the peak of the project.