Fortune 15 Telecom Company


New Switch Building


Mechanical & Electrical
Architecture & Interiors


Redmond, Washington


$15 million


42,000 square feet

Engineering to Support a Reliable, Secure Switching Center

Our client asked us to provide design support for a new 42,000-square-foot switching center with temperature control infrastructure, backup systems, and security access.

Our design solutions included a variable air volume (VAV) system and a central condenser water loop to serve multiple computer room air conditioner (CRAC) units, heat pumps, and the VAV air handler. The heat-generating telecommunication equipment is served by multiple CRAC units supplying common overhead ductwork. Redundant equipment and an automatic direct digital controls system ensure that the switching center continues operations should one of the CRACs units fail.

Electrical work included extensive DC and AC power systems, including a fully monitored security system with central control room stations and a secured entry station as well as two 1250kW overhead cable tray systems for switch room and control room power and data distribution.