the at&t stadium has a 10 roof.
what kind of roof does the at&t stadium have?
10
architecturally speaking, retractable roofs vary greatly from stadium to stadium in shape, material and movement. for example, miller park has a fan style roof, while toyota stadium in japan has an accordion-like roof. most retractable roofs are made of metal, while some, such as the roof of state farm stadium, are made of water-resistant fabric. although each retractable roof differs in these aspects, the roof of t-mobile park is unique in that it is the only one in north america that does not form a climate-controlled enclosure when in the extended position; rather, it acts as an "umbrella" to cover the playing field and spectator areas during inclement weather, with no side walls enclosing the stadium.
retractable roof
to go along with the start of the new millennium, the park received a modernized olympic stadium. as part of germany’s preparations for the 2006 fifa world cup the olympic stadium received a complete renovation. construction at the olympic stadium began in september of 2000. the renovation provided the olympic stadium with a new roof made of a semitransparent teflon membrane (more specifically made of a ptfe-coated glass fiber named "polytetrafluorethylen"). the material used provides an even lighter appearance than the roof installed for the 1974 world cup had. much like the roof installed for the 1974 world cup had, the lightness and transparency of the new roof provides a visual contrast to the heaviness of the stadium’s construction. the roof mimics the tiers of seating by providing a gap at the marathon gate. unlike the roof that was installed for the 1974 world cup, this roof covered all of the stadium’s seating. the roof appears almost to float above the stadium. the new roof is supported by 20 steel columns interior, the distance between each ranging from 32 to 40 meters. the roof is also supported by 132 exterior columns, which are located completely outside of the seating area. the roof rises 68 metres over the seats, and 39.99 meters over the field-level. the weight of the roof is 3,500 tons. the roof’s construction is 42,000m² consisting of a 27,000m² upper roof membrane distributed into 77 sectors, a 28,000m² lower roof membrane, and a 6006m² glass surface. the renovation preserved the stadium’s running track. the renovation also repaired the stone of the original stadium construction, rebuilt the lower tier of seats at a new angle, and lowered the playing field by 2.65 meters (8.7 feet). the renovation also added state-of-the-art lighting and sound. the renovation also created 76 new vip boxes in the inner gallery between the lower and upper seating rings, and 13 new skyboxes were installed within the former press stands of the upper ring. a number of new restaurants were added to the stadium during the renovation. a chapel was built inside the stadium as well, and was opened just prior to the world cup. the chapel construction project wound up receiving the ‘’if gold award’, 2007 ‘’red dot award’’. the renovated olympic stadium possesses the largest seating capacity of german stadiums at 74,500. it also has a total 113 vip stands, and two underground parking garages accommodating 630 cars.
olympiapark berlin