| City, Country | Las Vegas, United States | |
| Year | 2018–2020 | |
| Client | Freyssinet International & Cie | |
| Architect | MANICA Architecture, HNTB | |
| Services | Structural engineering | |
| Facts | Roofing surface: 30,000 m² | Seats: 65,000 | |
The Allegiant Stadium in Las Vegas can seat 65,000 spectators. Above the playing field and above large parts of the lower grandstand areas, a spectacular, almost 3-hectare cable-covered roof area opens up, which is covered completely transparently with ETFE foil cushions.
The parabolic cable ties above the elliptical roof opening span orthogonally in longitudinal and transverse directions, and the upper and lower cable pairs are pushed apart by vertical air supports (flying struts). At the crossing points of the X and Y cables, complex knots are formed, each with four ropes running through it. Since during the hoisting process, the cables change their entry angles very strongly, all cables clamps were mounted articulated to the knots.
Bollinger+Grohmann provided the design of the cable roof structure and did the studies for the complex Biglift-installation and prestressing procedure of the cable roof. We were present on-site from the very beginning until the last cable was pinned.
