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Boeing Headquarters

Renton, WA

MacDonald-Miller: Mechanical Engineer and Mechanical Contractor

A four-story glass enclosed atrium serves as the entrance to this 300,000 sq. ft. building, connecting all four adjacent floors through open balconies.

Project Overview
  • The building utilizes two 300-ton custom roof-mounted chilled/hot water air-handling units.
  • Chilled water fan coil units function ancillary support spaces and equipment rooms to provide 24/7 operation.
  • Full Heating and Cooling Capability with Multiple Hoods to Serve 9,000 Ft2 Commercial Kitchen, Servery, and Cafeteria.
  • All served by a central chilled water/heating plant.
  • MacDonald-Miller, in concert with Yantis and Associates, designed HVAC fan terminals and diffusers as a sound-masking system to inhibit cross transmission of noise between offices in this open-concept office building.
  • The air handling system was designed to double as an active smoke control system for the atrium to eliminate the need for additional fans.
  • A 120-foot long, continuous floor supply grille served by a 60-in diameter underground duct provides supply air to the atrium.

Boeing 777 Facility

Everett, WA

MacDonald-Miller: Mechanical Contractor

This 10,000 sq. ft. expansion created two wing spar clean, seal and paint booths for Boeing 777 airplanes in the middle of the world's largest building. A strong emphasis was placed on safety for this project due to the large ductwork as well as the elevation where the work took place. The equipment was set in place by helicopters.

Project Overview
  • The installed system consists of a laminar flow supply and isolated supply hoses for working in the wing spar.
  • Several exhaust systems, made from stainless steel, aluminum, galvanized sheet metal, and even 1/4" plate metal, were fitted for different phases throughout the painting process.
  • Because of the location in the building, services were provided via underground tunnel ventilation ducts and 60" risers up 130', horizontally through the structure and up through the roof.

Boeing Office Complex

Seattle, WA

MacDonald-Miller: Mechanical Contractor

This plan/spec design project included a built-up penthouse and VAV distribution system for 2.1 million sq. ft. of office space and a cafeteria. This office complex is the largest of its kind on the west coast.

Project Overview
  • The HVAC system for the office buildings is housed in four penthouses, two per building. Each penthouse contains two air-handling systems built up with four 48,000 CFM supply air fans and three 60,000 CFM return air fans.
  • On level two is the garage ventilation and atrium air supply room with six 80,000/30,000 CFM dual speed supply air fans. Their purpose is to supply fresh air to the two garage levels and provide positive pressure to the atrium in the event of a fire.
  • An additional built-up air handling system with two 38,000 CFM fans serves the dining/kitchen area.
  • The building air distribution system consists of over 1,300 VAV boxes, 100,000 pounds of sheet metal, 10,000 diffusers and over 50 miles of hanger strap.
  • Due to the size and schedule of the job, a spiral duct machine was placed on site as a cost reduction measure. The machine was raised to each floor through the fresh air-shafts in the building, where the ductwork was fabricated for each floor on that floor.

Darigold Cheese Plant

Sunnyside, WA

MacDonald-Miller: Mechanical Engineer and Mechanical Contractor

This 66,000 sq. ft. project included packing and cold storage, processing plant, office and visitors' area and a store.

Project Overview
  • The system consists of 100% outside air, with gas heat and low temperature chilled water for cooling in the plant.
  • All ductwork and louvers are stainless steel to withstand daily wash down.
  • The office and store are served by conventional roof stand-alone equipment.
  • Provisions were made to use the heat rejected from the processed chilled water as the first stage of heating in the cheese plant. This provides the owner with an energy efficient building and a two-year pay back on the cost of this option.

Flow International

Kent, WA

MacDonald-Miller: Mechanical Engineer and Mechanical Contractor

As a world leader in the development and manufacture of ultrahigh-pressure water-jet technology, Flow International required this 113,000 sq. ft. facility complete with environmentally-sound.

Project Overview
  • The project included a VAV system of 90 tons with 34 zones in the office areas, as well as heating and ventilating in the manufacturing area.
  • Special exhaust systems were installed for the burning rooms and test pads.
  • An industrial waste system along with compressed air was fitted for the research and development areas.

Kanto Corporation

Portland, OR

MacDonald-Miller: Mechanical Contractor

This chemical manufacturing facility has 44,000 sq. ft. including world-class clean rooms, Class 100 filling and inspection rooms, an analytical laboratory and office space.

Project Overview
  • The systems consist of multiple air handlers and several dedicated stainless steel and fiberglass exhaust systems.
  • High efficiency filters in the air handlers and Hepa filters at the outlets helped the building receive a Class 1,000 rating.
  • The project also entailed the installation of a HVAC dry side and process exhaust systems serving Class 10,000 and Class 1,000 clean rooms, Class 100 clean booths, and scrubber exhaust systems serving extensive FRP duct systems.
Boeing Headquarters

Boeing Headquarters
Renton, WA