Bright colors and playful forms work towards reshaping how the neighborhood perceives the institutional presence of a new school in their community. The elementary school building is sited across from a police station along Ogden Avenue, an industrial corridor on the Southwest side Chicago that has seen cycles of disinvestment. In the North Lawndale community, an “institutional building” usually means a police station, a courthouse and other places that often engender strained relationships with the resident population. The design team strived to design a building that while efficient and cost effective, was inviting, stimulating and fun.
Corrugated aluminum panels and a lightweight metal lattice layered over painted pre-cast panels creates a "Solar Veil", a cost-effective, high-performance building envelope. The amount of color and shadows on the layered, perforated facade change throughout the day and year.
The interiors of Legacy are organized to maximize transparency. Clean sight-lines, shared spaces, and an abundance of glass obviate the need for an array of security cameras and metal detectors. The school boasts student-centered education, small class sizes and an array of social and educational services. It features group study and work rooms, private break out space, as well as traditional and specialty classrooms.
A solar photo-voltaic system on the roof reduces ongoing operation cost for the PreK-8th grade school by 13%. Sustainability has been integrated into the teaching curriculum for all grade levels as part of the School as a Teaching Tool program of the School's LEED Platinum certification.
The project has achieved LEED Platinum certification and to do so without adding significant cost to the project required a comprehensive planning effort. The sustainability program is rooted in the citizenship goals the school strives to instill in every student. It is also part of the value proposition for the building itself. The tight planning means that the amount of gross area of construction necessary to support the program is extremely modest.
The building features a rooftop photo-voltaic array that provides 13 percent of the building's electricity requirements. The school also features an entire curriculum that will use the building as a platform for teaching students about sustainability. In these and many other ways, the project goes beyond the accommodation of the program and becomes a participant in the shaping of the community itself.
The exterior envelope for the project features an innovative "solar veil" that floats off the pre-cast by 3". The perforated aluminum veil absorbs significant solar heat gain in the hottest parts of the summer and allows it to be carried off the building by natural ventilation. The effect of the solar veil in combination with the rooftop photo-voltaics is to reduce the peak electrical loads in the hottest summer months. The cost / benefit of this assembly is to not only reduce the amount of electricity consumed, but to also reduce the rate charged for the power by "peak shaving" the cost basis for this electricity.
Building energy performance exceeds code required baseline by 42%.
The array of photovoltaic panels on the roof will provide 13% of the buildings electrical power and send excess power back to the grid.
-EUI (excluding on-site) - 32 kBtu/sf/yr
-EUI (including on-site) - 29 kBtu/sf/yr
-43.1% regional energy reduction
The project location is well served by mass transit.
Walking score - 77
Transit score - 63
Bike score - 76
A storm trap underground detention storage structure (19.9x216.5x5.9) is used to collect flow through a 10” ESVCP pipe from the building. Detained flow then outletted to existing storm structures as the site permits through an 8” ESVCP pipe with a 2.5” Restrictor.
-100% of precipitation managed on-site
-35% regulated potable water reduction from baseline
The project meets superior performance in the management of construction waste and material management including recycling of 85% of construction waste, 30% recycled content for all construction materials, 43% of all construction materials are regional and sourced within 500 miles and 54% of the wood used is from certified renewable sources.
All adhesives, sealants, paints, floorings, composite woods, and fibers specified in the project are certified low VOC emitting materials.