Case Study

Fortune 15 Telecommunications Company

New Switch Building

Salas O’Brien performed mechanical and electrical engineering, architecture, and interior architecture for this new 42,000-square-foot building for switching equipment and administrative space.

The mechanical design includes a VAV (variable air volume) system and a central condenser water loop to serve multiple CRAC (computer room air conditioner) units, heat pumps, and the VAV air handler. The heat generating telecommunication equipment is served by multiple CRAC units supplying common overhead ductwork. Each room served by the CRAC units is designed to maintain operation in the event that one unit fails through the use of redundant equipment and an automatic DDC (direct digital control) system.

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


Redmond, Washington

Construction Cost:
$15 Million

Project Size:
42,000 Square Feet

Mechanical and Electrical Engineering, Architecture, and Interior Architecture