Post tensioning completed on Minnesota Twins Ballpark

Minneapolis, Minnesota (Minnesota Twins Ballpark aka ‘Target Field’)

The final stage-stressing of the post tensioned concrete girders was completed several weeks ago.  Through the course of the high-profile project, AMSYSCO, Inc. supplied approx. 750,000 feet of post tensioning tendons (or 200 tons) along with installation drawings and engineering expertise.

An unbonded post tensioned flat-plate system was used in the Mezzanine level.  Additionally, post tensioned girders helped support the Main Concourse, Club, Suite, Upper and Terrace levels.  Since the open-air ballpark is exposed to weather, AMSYSCO’s encapsulated system was used to inhibit corrosion.

The ballpark will have seating capacity for 40,000 fans and should be ready for the 2010 Major League Baseball season.

Owner(s):  Minnesota Twins LLC; Hennepin County; Minnesota Ballpark Authority; BNSF Railway Company

Architect:  HOK Sports; Hammel Green & Abrahamson

Structural Engineer:  Walter P. Moore

Contractor:  M.A. Mortenson Construction; Thor Construction


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