Aon Center (Los Angeles)
| Aon Center | |
|---|---|
 |
|
| Alternative names | United California Bank Building First Interstate Tower |
| General information | |
| Status | Complete |
| Type | Commercial offices |
| Location | 707 Wilshire Boulevard Los Angeles, California |
| Coordinates | 34°02′57″N 118°15′25″W / 34.049167°N 118.256944°WCoordinates: 34°02′57″N 118°15′25″W / 34.049167°N 118.256944°W |
| Construction started | 1970 |
| Completed | 1973 |
| Owner | 707 Wilshire Fee LLC |
| Height | |
| Roof | 261.52 m (858.0 ft) |
| Technical details | |
| Floor count | 62 5 below ground |
| Floor area | 116,128 m2 (1,249,990 sq ft) |
| Lifts/elevators | 30 |
| Design and construction | |
| Architect | Charles Luckman |
| Structural engineer | Erkel Greenfield Associates |
| Main contractor | CL Peck Contractor |
| References | |
Aon Center is a 62-story, 860 ft (260 m) Modernist office skyscraper at 707 Wilshire Boulevard in downtown Los Angeles, California. Designed by Charles Luckman, site excavation started in late-1970, and the tower was completed in 1973, the rectangular bronze-clad building with white trim is remarkably slender for a skyscraper in a seismically active area. It is the second tallest building in Los Angeles, the second tallest in California, and the 31st tallest in the United States. The logo of the Aon Corporation, its anchor tenant, is displayed at the top in red.
Aon Center was originally named the United California Bank Building from its completion in 1973 until 1981, when it became First Interstate Tower. It was the tallest building west of the Mississippi River when built, until 1982 when it was surpassed by the Texas Commerce Tower in Houston. Upon its completion in 1973, the building was the tallest in the world outside of New York and Chicago. It remained the tallest building in Los Angeles until 1989, when Library Tower (now U.S. Bank Tower) was completed. Between 1998 and 2005, there were no logos on the building.
On May 4, 1988, a fire began on the 12th floor just after 10:00 PM, it burned for about four hours. The fire destroyed five floors, injured 40 people, and left a maintenance worker dead because the elevator opened onto the burning 12th floor. The fire was so severe because the building was not equipped with a sprinkler system, which was not required for office towers at the time of its construction. A sprinkler system was 90 percent installed at the time of the fire; however, the system was inoperative, awaiting the installation of water flow alarms. The fire was eventually contained at 2:19 AM, and caused $400 million in damage. Repair work took four months. Because of the fire, building codes in Los Angeles were modified, requiring all high-rises to be equipped with fire sprinklers. This modified a 1974 ordinance that only required new buildings to contain fire sprinkler systems, grandfathering older buildings. Existing all-concrete construction high-rises are still exempt from this ordinance.
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