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United States of America
The Global Hub is a new, state of the art education facility for the Kellogg School of Management at Northwestern University. It is designed to expand the interactive and social values of business education in a creative, collaborative, team-based environment.
The overall shape and orientation responds to the scale of the campus as well as the force and power of Lake Michigan to the east, and the iconic Chicago Skyline to the south.
The school’s tiered, cantilevered, and fluid form gives the sense of structure in motion against the shore of Lake Michigan. The sculpted, undulating form weaves around the building, revealing multi-level terraces and interstitial spaces that foster informal social activity and cross-pollination.
Navigating the interior delivers an equally fluid experience. The interior is connected visually through a series of openings that facilitate circulation and visual transparency.
The project is organized to foster serendipitous social and academic exchanges, extending education beyond traditional classroom settings. The building reinvigorates and leads discussion around the values and meaning of business education.
The building will further Kellogg’s mission to educate, equip and inspire the next generation of leaders who will challenge convention, reshape the practice of business and inspire growth in themselves and others.
Sustainable Design Intent and Innovation
Certified LEED Platinum, the new Global Hub champions our commitment to both sustainable design and community responsibility. The result is a living, breathing building that not only greatly reduces potential energy costs and waste, but also delivers a superior working and studying environments for the students, professors and staff. The building is designed to maximize daylighting and integrated daylight controlled lighting to reduce electrical energy, 100% fresh air and thermally comfortable spaces that respond to local conditions with automated systems. Further green initiatives include the use of renewable building materials, installation of efficient fixtures, radiant heating and cooling, geothermal, high efficient heat recovery systems and a high performance curtainwall to minimize heat gain with maximizing daylight and view. The result is an energy savings of 46.2%.
The project is designed to maximize cost-effective energy efficiency. Major energy efficiency features of the building include the following:
• Superior thermal insulation is provided for building envelope systems (walls, windows, roofs, etc.) to reduce thermal conductivity and associated heat gain and heat loss. Triple glazed windows with solar control low-e coatings reduce heat losses and solar heat gains. Automatic interior roller shades (for all floors) is also incorporated in classrooms to provide an excellent assembly Solar Heat Gain Coefficient, reducing the solar heat gain to the perimeter spaces considerably. In addition, airtight building envelope is provided to significantly reduce infiltration/air leakage. All of the above strategies are derived from thermal analyses, where an optimized balance between thermal insulation and solar heat gain was targeted, in order to reduce mechanical heating and cooling energy consumption.
• Ventilation is decoupled from space heating/cooling systems. Dedicated outside air systems with total energy recovery wheels precondition outside via building exhaust air, providing ventilation and latent cooling (dehumidification) to the building occupants. Sensible cooling and heating in the occupied spaces is accomplished via hydronic means and devices (combination of radiant ceiling sails & panels, radiant floors, fin-tube radiators, active chilled beams and fan coil units) which is a far superior source of delivering heating and cooling to the space compared to conventional air system. These strategies will provide the highest level of thermal comfort while realizing substantial energy savings.
• A geo-exchange water system consisting of a series of geo-exchange wells located beneath the practice field adjacent to the building is used as a primary heating/cooling sources to satisfy majority of the building normal load demands. In addition, water-to-water heat pump (heat recovery chiller) system is utilized to provide simultaneous heating and cooling to the building by harvesting the building waster heat from building cooling loads, and reusing it in the building heating loads. Campus steam/chilled water is used as the last stage of heating/cooling sources during peak load conditions when the geo-exchange and heat pump capacities are exceeded. This will reduce the overall building energy consumption and capacity requirements on the campus steam/chilled water systems.
• Low-pressure low-velocity ductwork distribution system is provided to minimize fan energy while optimizing sound control.
• Sophisticated control system is provided to optimize HVAC controls. Higher occupant density areas such as classrooms, study rooms, etc incorporate demand control ventilation strategies based on occupancy sensors, CO2, and humidity monitoring.
• Underfloor air distribution is utilized in the classrooms, study rooms, auditorium and atria. In other spaces such as offices, overhead displacement ventilation is used. The goals of these systems are to provide improved ventilation effectiveness and enhanced thermal comfort.
• Daylight controls are applied to every exterior open public space and spaces open to the atrium. The artificial lighting is continuously controlled to maintain the programed lux level. The design of the spaces is informed by daylight studies, in order to optimize the daylight availability. In combination with high efficient lighting sources this system provides bright spaces and sufficient artificial lighting with low electrical energy demand.
The building manifests Kellogg's vision to build a global community and connect students, scholars, business leaders and thought leaders from around the world. Kellogg satellite campuses are connected by state of the art technology who will together realize the mighty task of placing business management into the service of creating value to improve the human condition.
Locally, the building creates a destination and gathering place for team-based teaching and research, epitomized in the series of generous indoor and outdoor gathering spaces to physically bring people together. It is designed to expand the interactive and social aspect of business education in a creative, collaborative environment. The building is open, inclusive and inviting to all.
The school’s cantilevered and fluid form gives the sense of the structure in motion against the shore of Lake Michigan. The sculpted, undulating form weaves around the building, defining multi-level terraces and active interstitial spaces that foster creative cross-pollination and encourages everyone to
explore at every level.
As the most transparent building with connections through orientation and views to Lake Michigan, the Chicago skyline, and the Northwestern Campus along with entrances on all four sides and a series of indoor and outdoor spaces, the architecture sets a new direction for creating a connected campus at Northwestern.
The front door of Kellogg is ¼ mile from a bus stop that serves many busses with a total of over 200 stops per day. The elevated train stops less than a mile away.
The facility is served by many local services, such as a bank, post office, restaurants, museums, theater, library, parks and more. For example, the food service offerings in the cafeteria is planned to give back to the community - in employment as well as selling menu items such as sushi from local restaurants.
The Kellogg School of Management used low flow fixtures to help reduce the amount of regulated potable water use. The facility is estimated to use 731,710 gallons per year (1.76 gallons/sf/yr ). This is a 40% water reduction from the baseline.
The facility chose not reuse waste water on site. Instead subsoil ground water was reused for landscape irrigation. The building is located next to Lake Michigan, which results in a need for subsoil ground water management. The facility collects the subsoil ground water in two sumps that are pumped to a 3400 gallon holding tank to be treated with UV light and filtration before it is reused for irrigating the landscape around the building.
The Kellogg School of Management uses permeable pavers at the vehicular way as well as the use of reinforced turf for the fire lane at the east side of the building to minimize hard surface areas. 78% of the project area is routed through infiltration systems prior to discharging to Lake Michigan. Impervious surface not routed through infiltration means were minimized to the extent practicable in an effort to reduce the runoff from the site and produce a net reduction in runoff from the existing condition.
2.4 acres of the runoff from the 5.6 acre project area is directed to an infiltration system beneath the permeable pavers used at the drop-off loop. This infiltration system is intended to provide 100% infiltration for the tributary area under the 2-year rainfall. An additional 2 acres of the project area (as well as any overflow that may occur from the new infiltration area from larger rain event (4.4 acres total or 78% of the project area) routes through an existing infiltration system located beneath the north parking lot area where additional infiltration is able to occur prior to routing through the remaining NU storm sewer discharging to Lake Michigan.
The remaining 1.2 acres of the project area is directly tributary to the NU Cooling Lagoon. This area consists primarily of pedestrian corridors adjacent to the lagoon, a minor portion of the plaza deck, and permeable areas unable to be routed to the infiltration areas. Prior to discharging to the Cooling Lagoon, the runoff from these areas is routed through structures containing BMPs for sediment removal.
The interior finishes were selected to provide great acoustic performance and durability required for spaces of collaboration.
All adhesives, sealants, paints, coatings, flooring and composite wood meet LEED IEQc4 standards for VOC content and emissions. All regulated flooring materials meet FloorScore, Carpet and Rug Institute Green Label Plus or SCAQMD Rule 1113 as appropriate. Many of the flooring materials are ceramic tile, stone, wood or concrete and emit no VOCs. None of the composite wood in the extensive millwork, doors or elsewhere contain added urea formaldehyde.
Over 80% of the construction waste was diverted from the waste stream and recycled.
Design Architect (FIRM)