From Deseret News archives:

Salt Lake's former Key Bank tower will be imploded this summer

The blast limits the inconvenience to public downtown

Published: Thursday, May 3, 2007 12:10 a.m. MDT
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For the first time since 1983, a Salt Lake City building will be imploded this summer.

The former Key Bank tower at 50 S. Main is coming down as Property Reserve Inc., the real-estate arm of The Church of Jesus Christ of Latter-day Saints, makes way for the City Creek Center development.

PRI said Wednesday that Okland Construction Co., which is handling the construction work on the Crossroads Plaza block, has received permission from the Utah Air Quality Board to bring the building down with implosion.

"Worker safety, combined with cost and time savings, make implosion the preferred method of demolition," City Creek Center spokesman Dale Bills said in a statement. "Implosion also limits public inconvenience to one day, as opposed to four to five months."

Okland currently plans to bring the tower down on the morning of Aug. 18. That is a Saturday, so the downtown blocks won't be as busy as they would be during a normal work day. The date could change, based on site preparation and weather conditions.

Bryce Bird, air-standards branch manager for the Utah Division of Air Quality, said Okland officials had to present the board with details of their plans for the implosion.

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"There will be dust," he said. "It will be a short-term episode."

Buildings are imploded by strategically placed explosions within the building. Those explosions take out key pieces of the building in a way that causes the upper levels to fall inward, so the building collapses on its own footprint and doesn't impact neighboring buildings.

Bird said Okland needed permission from the Air Quality Board because the company was asking for a variance from a rule that limits the dust output that normal construction work can cause.

"It's basically a balance," Bird said of the factors weighed in the decision to allow the implosion. "Because the building is so big, it would take months to deconstruct it from the top down and would tie up traffic downtown for months."

Bird said Okland crews will seal off ventilation systems in nearby buildings and evacuate neighboring tenants who have respiratory problems, among a host of other mitigation efforts.

City Creek Center is a proposed 20-acre mixed-use development that will replace the Crossroads and ZCMI Center malls with an indoor-outdoor mix of retail, residential and office space. The new development is set to open in 2011.

Recent comments

"..Saturday implosion limits inconvenience to public downtown.." I...

Louise Radcliffe | Aug. 9, 2007 at 1:17 p.m.

Image

Former Key Bank tower is to be imploded on Aug. 18.

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