Geiger Engineers Page 3 Selected Tensile Membrane and Cable Structures

Icahn Stadium Randall’s Island Track and Field Center, New York, NY. This state of the art track and field facility replaces the aging Downing Stadium on Randall’s Island, across the East River from Manhattan. The new facility seats 5,000 and includes press and media facilities, club and officials’ offices. A 42,000 ft2 lightweight tensile structure canopy covers the seating grandstand.

Year Completed: 2004 Construction Cost: $19.5 million

2002 World Cup Main Stadium, Seoul, Korea. The 2002 World Cup opening ceremony venue is the City of Seoul’s new 65,000-seat football (soccer) stadium. A football only venue, the stadium has a natural grass pitch and a roof canopy covering all spectators. Geiger Engineers was responsible for stadium’s 40,890 m2 (440,179 ft2) roof canopy. The stadium canopy is a unique spatial network of trusses members suspended by cables from 16 masts. The canopy structure is clad with a prestressed tensile membrane of PTFE coated fiberglass fabric and conventional glazing. The entire roof surface is translucent or transparent. The tensile membrane while allowing diffuse natural lighting to maintain a bright ambiance shades the seating. The glass portion of the roof is transparent, sheltering the seating below while softening the canopy’s shadow lines on the field and increasing the light on the turf. Construction Cost: $35 million (est US $) canopy only Completion Date: 2002

Ontario Pavilion, Expo ‘86, Vancouver, British Columbia, Canada. The Ontario Pavilion at Expo '86 included a covered exhibit area, a theatre, an outdoor amphitheatre and a restaurant, organized in a unique building. The exhibit area roof consisted of 37,000 square feet of translucent fabric supported by 17 radially arrayed "tensegrity" arches. The complete roof structure had the form of a segment of a torus wrapped around the back of the amphitheatre. In addition to providing the structural design for the roof, Geiger Associates consulted to the roof contractor, providing cutting patterns for the roof membrane and a detailed analysis of the contractor's erection and stressing sequence.

Construction Cost: $18.0 million CDN Completion date: 1986