A more complex area of the stadium design was the support beams for the rolling roof panels. The 1050' long, sixteen foot deep beams were supported by eight 150' tall steel towers as they curved together around the outfield. Solid baffle walls on top of each tower acted as stiffener beams between the support beams which varied in length and were not solid, but had a series of empty cores between the beams that gave the design a distinctive “waffle” look. In addition, the beams were not parallel to each other. Each roof section had a different pivot point behind home plate, and the radius and orientation of each one’s support beam reflected this slight, but important, difference.

Because of the complexity of the architectural plan, the design of the core elements presented a particular forming challenge. Each core was an untrue rectangle with fractional dimensions and slight curves on two sides. No two sides of any core had the same dimensions, and none of the corners had a 90 degree angle. In addition, the curved walls had to be within a 1∕8" tolerance using flat forms. These unusual challenges made precision difficult, but absolutely essential for this crucial element.