- Willow School

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HEALTH, WELLNESS & NUTRITION CENTER

FACT SHEET

Building Size: 20,000 square feet

Site agricultural gardens and compost: 10,000 square feet

Facilities: Four classrooms, dining room, movement / performance arts space, commercial kitchen, teaching kitchen, health and wellness area, energy gallery, faculty room

Energy: 100% Renewable solar electric power from rooftop photovoltaic array (251 solar panels)

Production: 205,000 AC Kilowatt hours per year

Usage: 128,000 AC Kilowatt Hours per year (Net Positive)

Energy Usage: 21.9 KBTU’s per square foot per year

Natural Day Lighting: 85% daylight autonomy

Water: Rainwater is captured, treated, and utilized in the building to flush toilets and for irrigation.

Cistern: 10,000 gallon water tank

Building Envelope Performance:

Air Leakage: Not to exceed 0.07 CFM/square foot of air barrier surface area @ 0.2 inches water pressure difference inside to outside of building.

Maximum Air Leakage: Not to Exceed 2536 CFM

@ 50 Pascal’s

Insulation:

Roof: R-60; U-0.016

Walls: R-40; U-0.023

Slab on Grade: R-20

Windows:

Window to Wall Ratio: 25%

U Factor: 0.18

Solar Heat Gain Coefficient: 0.56

Visible Light Transmission: 70%

Kalwall 2-3/4” Translucent Panels

U Factor: R-20 Thermal Performance / .05 U Factor

Solar Heat Gain Coefficient: 0.25

Visible Light Transmission: 25%

Building Materials:

Every building material is examined closely and meets the Living Building Challenge’s requirements for

Red List”

and “

Appropriate Sourcing”

to promote maximum human health, reduce carbon footprint and achieve unparalleled indoor air quality.

Wood: 100% of all wood products are Forest Stewardship Council Certified (FSC) or salvaged

Stone: 100% of all stone is salvaged

Concrete: Mineral slag is used to replace Portland cement to reduce CO2 off gassing, contribute to waste reuse and reduce raw material consumption.

Construction Waste: Over 95% of all construction waste is recycled or reused

Construction cost: $7.5 million

BUILDING FEATURES AND DISTINCTIONS

The Health, Wellness & Nutrition Center is the largest educational building in the United States and the first structure in New Jersey to pursue the criteria for both the U.S. Green Building

Council’s LEED for Schools 2009 Platinum Certification and the Living Building Challenge 2.0.

The building functions as a living organism such as a tree, harvesting and producing all of its energy from the sun and collecting only as much rain water as it needs.

Building materials are sourced as locally as possible and selected for their sustainability. The hallway structural columns or “trees” are reclaimed timbers from a 1920s North Carolina mill.

The hybrid heating and cooling system is extremely energy efficient. When the outside temperature is between 65 - 80 degrees, these systems turn off and a green light in each room signals that it is time to open the windows for natural ventilation.

The building is uniquely designed with expansive windows and skylights to allow for 85% daylight autonomy, meeting a majority of the building’s lighting needs during the school’s operating hours.

The Energy Gallery will display a real-time energy monitoring system for tracking rain water harvesting as well as solar energy production and usage, allowing students to participate in and learn from the process.

The building offers a replicable model for other educational institutions, both public and private.

The heart of the building is a teaching kitchen inspired by Alice Water’s Edible Schoolyard

Project and The Garden to Table integrated curriculum.

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