Launch Slideshow

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TCP's 2008 GreenSite Awards

TCP's 2008 GreenSite Awards

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    Precise concrete formwork and a system for recycling formwork materials helped reduce costs and increase efficiency in building the Grand Rapids Art Museum.

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    The Aldo Leopold Legacy Center is a small complex of buildings surrounding a central courtyard. This design is flexible in managing energy use based on thermal requirements, creates outdoor spaces, and reduces the buildings' scale.

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    Underground concrete pipe created earth tubes that ventilate the center with conditioned air.

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    Symphony House used recyclable Eco-Blast steel shot finish. While contaminated sand from sand-blasting must be discarded, builders can reuse steel shot.

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    C-GRID carbon fiber reinforcement resulted in a smaller carbon footprint by reducing the weight of precast panels, materials, and energy and superstructure requirements.

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    This project, winner of an Ontario Concrete Award for Sustainable Concrete Construction in 2007, will soon be the first mixed-use building in Canada to be LEED Gold certified.

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    The Country Club Road concrete home uses ICF construction to create an airtight, energy-efficient design.

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    The small squares on the kitchen floor were hand-brushed with multiple layers of onyx-colored stain to reach a deep color. Black grout and saw cuts create the look of tile.

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    Floors throughout the house are acid stained and feature custom designs.

High-Rise

Symphony House Philadelphia

The developer of Symphony House, a 32-story, $125 million condominium, promised “a provocative design that takes from the grandeur and romance of the 1920s and gives it 21st century transformation.” The same can be said about the building's exterior, featuring almost 900 CarbonCast carbon fiber, reinforced, architectural wall panels.

CarbonCast panels use non-corrosive, high-strength, resin-bonded, C-GRID carbon fiber reinforcement in the panel face, replacing conventional steel mesh. Ultra-strong, 1-mm-thick, C-GRID requires less concrete cover than welded wire, enabling lighter pre-cast sections and longer life.

This technology permits panel thicknesses of 1 ¾ to 10 inches or more, allowing design freedom with no weight penalty, less overall mass, less energy to install, and lower shipping and erection costs. All of this translates to a smaller CO2 footprint.

The high-performance 5000 psi panels for Symphony House consist of recycled and local materials. The panels were 7 inches thick and deeply articulated, but weighed 66% less than conventional precast, so they could be slab-attached. This resulted in fewer interior columns and more open spaces. Although the 507,000-square-foot building sits on poor soil, the carbon fiber panels allowed better seismic performance, but with fewer columns and less structural mass than conventional precast.

Carbon fiber panels are energy-efficient, as the carbon fiber shear truss provides low thermal transfer between a steel-reinforced v-rib and the panel face. Crews embedded expanded polystyrene (EPS) foam in the panels for insulation, improving energy efficiency and reducing weight.

Symphony House's insulation has a composite value of R-9, a value not possible to achieve with conventional pre-cast panels. Each inch of insulation on this project also cost about half as much as it would for solid concrete paneling.