 Verfasst am: 01. Dez 2012 17:25 Titel: Brauche Hilfe für Eurkom... Textbeschreibung |
|
| Es geht um diesen Text ich habe nicht viel Ahnung um was es in diesem Text geht. Ich hab meine Eurokom über Brooklyn Bridge. Könnte mir einer helfen ich weis nicht wie ich diesen Text verfassen soll so das ich ihn verstehe könnt ihr mir helfen  Könnte ihn jemand auf English umschreiben das er einfacher wird evtl auch wenn 2 oder 3 Sachen fehlern oder nicht zu 100% genauso beschrieben sind oder so. Denn ich habe bald Eurokom  Danke für jede Mühe im vorraus. At the time the bridge was built, the aerodynamics of bridge building had not been worked out. Bridges were not tested in wind tunnels until the 1950s, well after the collapse of the original Tacoma Narrows Bridge (Galloping Gertie) in 1940. It is therefore fortunate that the open truss structure supporting the deck is by its nature less subject to aerodynamic problems. Roebling designed a bridge and truss system that was six times as strong as he thought it needed to be. Because of this, the Brooklyn Bridge is still standing when many of the bridges built around the same time have vanished into history and been replaced. This is also in spite of the substitution of inferior quality wire in the cabling supplied by the contractor J. Lloyd Haigh—by the time it was discovered, it was too late to replace the cabling that had already been constructed. Roebling determined that the poorer wire would leave the bridge four rather than six times as strong as necessary, so it was eventually allowed to stand, with the addition of 250 cables. Diagonal cables were installed from the towers to the deck, intended to stiffen the bridge. They turned out to be unnecessary, but were kept for their distinctive beauty. At various times, the bridge has carried horse-drawn and trolley traffic; at present,[when?] it has six lanes for motor vehicles, with a separate walkway along the centerline for pedestrians and bicycles. Due to the roadway's height (11 ft (3.4 m) posted) and weight (6,000 lb (2,700 kg) posted) restrictions, commercial vehicles and buses are prohibited from using this bridge. The two inside traffic lanes once carried elevated trains of the BMT from Brooklyn points to a terminal at Park Rowvia Sands Street. Streetcars ran on what are now the two center lanes (shared with other traffic) until the elevated lines stopped using the bridge in 1944, when they moved to the protected center tracks. In 1950 the streetcars also stopped running, and the bridge was rebuilt to carry six lanes of automobile traffic. |
|
