Square Feet
1.2 million
58 story
Mixed-Use High Rise
3,000 ton
Central Boiler
Project Description
The project spanned three quarters of a city block at 5th & Union, redefining the remaining block around the existing Rainier Tower building. The completed 58-story tower now stands as the second tallest in downtown Seattle, behind only the Columbia Center’s 76 floors. Rainier Square delivers over 1.2 million SF of construction, featuring 40 stories of shell and core office space, topped by 18 floors of residential apartments.
The mechanical systems include a 3,000-ton central boiler and cooling plant, heat exchangers, pumping stations, floor-mounted water-cooled heat pumps, and vertical stack fan coil units that serve the high-end apartment units.
The hotel component features heat recovery chillers, boilers, domestic hot water heaters, horizontal fan coil units, and heat pump units supporting lobby and common spaces. Along with complete domestic plumbing systems, MacDonald-Miller installed a state-of-the-art Building Management System that monitors and controls energy usage across the complex, delivering efficiency and long-term performance.
Highlights
Cutting Edge Design
The new modular composite steel core system will be the first of its kind in the world and is being called an ice cream sandwich – as the design utilizes half inch-thick steel plates as the chocolate cookies, and concrete as the filling.
Efficiency and Safety
The structure will cut construction time by 40 percent over a traditional concrete core and steel beam system and is designed to perform very well in an earthquake.
Energy Saving
The hotel will include heat recovery chillers, boilers and domestic hot water heaters, horizontal fan coil units and heat pump units serving lobby and common spaces. In addition to domestic plumbing systems, MacMiller will help install a state-of-the-art Building Management System to help monitor and control the energy usage throughout the complex.
Our Partners
Wright Runstad & Company
Lease Crutcher Lewis
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