Seattle Municipal Tower Tenant Improvements, Data Center
City of Seattle
Seattle, WA

Size: 62-story high rise office tower (1 million SF)


Wood Harbinger provided the mechanical and electrical design and construction administration for the tenant improvements to relocate approximately 1,600 city employees to the Seattle Municipal Tower (formerly Key Tower). The Seattle Municipal Tower is a 62-story, one million SF high-rise office building in downtown Seattle. The City bought Seattle Municipal Tower and over a seven-year period relocated several departments into the building. The departments vary in size from under 1,000 SF to over 100,000 SF.

One of the tasks associated with these tenant improvements was for the Department of Information Technology. The 10,000 SF Data Center is located on the east half of the 26th floor. It was part of a major project for the City of Seattle’s DoIT that included the 25th, 26th and 27th floors.  The Data Center included a communication room, control room, operations, distribution (large printing equipment), and shared computer lab.  This was a major project to be installed in an existing building designed for office space. Significant mechanical and electrical infrastructure modifications were required to the buildings systems to make the data center systems sized for current and future requirements. Major equipment installed included two 500 kVA UPS systems and one at 225 kVA UPS, six Power Distribution Units (PDU), and nine Computer Air Conditioning Units (CRU) that ranged from 20 to 31 tons each.