Cable-stay roof for stadium or arena and method of construction of same

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Turning first to FIG.
1, the basic elements of the Cable-Stay roof structure of the subject invention will be briefly discussed.
The Cable-Stay roof structure is intended to cover an existing or new open air stadium or arena shown generally by the numeral 20.
The Cable-Stay roof structure comprises two rows of towers 22 set in parallel rows on opposite sides of the stadium 20.
The towers in each row are connected by arches 26 and rest on foundations 18 and, when needed, piles 16.
The roof structure long-beam framing 38 is suspended by CableStays 40 from the towers 22 and or their arches 26.
This structure is further supported by back-stays 42 to ground anchors 28.
Between the long-beam framing 38 is intermediate roof framing 48.
Over the roof structure 38 and 48 is a roof covering or membrane (see FIG.
13 and 15) made of glass or a clear plastic or any other material and in desired areas the roof cover is made partially retractable or openable for ventilation and with louvered vents where needed and with permanent open parts where needed.
Having identified the main elements of the Cable-Stay roof structure, the preferred method of assembling this structure over an existing or new stadium or arena will be described in detail.
Starting with the stadium 20 in FIGS.
2 and 3, foundations 18, and piles 16 if needed are constructed exterior to the stadium 20.
Over these foundations are constructed concrete or steel towers 22 with the use of tower cranes 24.
The preferred embodiment has these towers as shown constructed from slip formed concrete in two parallel rows on opposite sides of the stadium.
As an alternate they may be constructed in two curved planes on opposite sides of the stadium to more nearly fit to the shape of the stadium or they may be set in a circle, an ellipse, or other curved shape around the stadium or other structure.
The preferred embodiment would have these tower rows at one point tangent to the stadium but they need not necessarily be tangent and can be set off from the stadium