![]() ![]() Exterior steel columns were spaced at 10 ft (3.0 m) around the building's perimeter, and composite wide-flange beams extended 47 ft (14 m) between the building's core and the exterior columns. ![]() The perimeter girder slabs were reinforced with steel, while the rest were reinforced with synthetic fiber. A two-hour fire-rated floor was constructed with 5.25 in (13.3 cm) concrete. This was done to minimize dead loads and support planned office and storage spaces. Lightweight concrete on metal decks was used to form the floor slabs of the building. Underneath the building is a series of tunnels that connect the parking garage to the main building. The bottom six stories are designated as the building's base and host a parking garage nearby. Externally, the building has a central tapering structure and an upward-curving base along its eastern side. The First National Bank Tower follows a postmodern design with a granite facade. This building has been described by CEO James Blackledge as "on the scale of the First National Bank tower" and estimated to either be the same height as or overtake First National Bank Tower as the tallest building in the state. In 2022, Mutual of Omaha announced plans for the Mutual of Omaha Headquarters Tower. Louis, making the final project the tallest building in the Midwest between Denver and Chicago. The building was designed to be three feet higher than both the 801 Grand building in Des Moines and the Gateway Arch in St. The building was officially completed in 2002, with a height of 634 ft (193 m) and 45 stories in total. On January 23, 2001, the structure's core passed 467 feet, overtaking the Woodmen Tower's record of 458 ft (140 m) at the time and making the First National Bank Tower the tallest building in Nebraska. Between May and June 1999, " Big Stan", the world's largest drilling rig, was brought in to drill the caissons and foundation. In April 1999, Kiewit formally began construction on the building. The First National Bank Tower was built on the site of the former Medical Arts Building, which was imploded on April 2, 1999, to make way for the current skyscraper. The project was announced to the public in 1998. Kiewit Corporation was chosen as the general contractor, and the construction cost was $225 million. In 1997, the engineering firm Leo A Daly was selected to design the tower. In the 1970s, the First National Bank of Omaha outgrew its original headquarters and began drafting plans for a new headquarters. This building was torn down to make space for the First National Bank Tower. Inside, the tower features a wintergarden and the original facade of the Medical Arts Building. The tower's and its parking garage's construction heavily featured the use of cast-in-place concrete. Construction began in April 1999 and lasted until 2002, with the building's completion being the subject of ACEC and Emporis awards. It has been since its completion, overtaking the 30-story Woodmen Tower located nearby. At 634 ft (193 m) it is the tallest building in Omaha and the state. The First National Bank Tower is a 45-story office skyscraper located at 1601 Dodge Street in downtown Omaha, Nebraska, United States, and the official headquarters of First National Bank of Omaha. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |