Posted in ENERGY, MATERIALS, REGULATIONS, REUSE, SOIL, tagged 14 Patterns of Biophilic Design, American National Standards Institute, ANSI/NSC 373-2013 Sustainable Production of Natural Dimension Stone, app, Bill Browning, Brazil, Building Stone Institute, CAM, carbon footprint, China, Citco, CNC, Cold Spring, Coldspring, Computer numerical control stone fabrication, deconstruction, dimensional stone, durability, embodied energy, Enterprise Plaza, Fabrication, Houston, import, India, Jason McLennan, Kathy Spanier, landscape architect, Landscape Architecture, landscape deisgn, LEED v4, limestone, Living Future Institute, Marble Institute of America, Martina Diamantini, Meg Calkins, Michels Stone, Minnesota, MNLA, Molly Bourne, Natural Stone Council, Northern Stone Supply, OJB Landscape Architecture, quarry, REUSE, Ronald “Chip” Trageser, Shipping, SITES, skilled workers, soil, standards, stone, Stones of North America Stone Selector, Stony Creek Quarry, Sustainability, Sustainable Sites Initiative, Terrapin Bright Green, TexaStone Quarries, third-party certification, transparency, TRANSPORTATION, U.S. Department of Transportation, University of Tennessee, Waste on February 27, 2018|
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BY MEG CALKINS, FASLA
The stone industry adopts a new sustainability standard.
In 14 Patterns of Biophilic Design, Bill Browning, an environmental designer and founder of Terrapin Bright Green, cites “material connection with nature” as a significant principle. In other words, materials from nature, with minimal processing, can be used to construct the built environment—reflecting the local geology and connecting people to a place and natural setting. More than any other material, stone fulfills this “pattern”—often seamlessly settling a built landscape into the larger natural context. Yet in some cases, heavy stone can travel thousands of miles between harvest and use—offering absolutely no connection to the local natural landscape and creating a substantial environmental footprint.
Stone holds great potential to be a highly sustainable construction material for use in paving, stairs, and walls. It can be extremely durable, with relatively low embodied energy (energy used to produce a material), and nontoxic. However, a study from the University of Tennessee estimates that more than half of all dimension stone—defined as any stone that has been cut or shaped for use in construction—is imported, primarily from China, India, and Brazil, owing to far lower labor costs and fewer worker safety regulations, which combine for a lower product cost. Some of this stone might have been harvested in the United States, sent overseas for processing, then returned as “imported stone.” Minimal records of stone harvest, sales, and processing make it challenging to track stone’s path to market. Additionally, environmental impacts from waste and water use in stone quarrying and manufacture are not insignificant. Fortunately, a new standard from the Natural Stone Council (NSC) and the American National Standards Institute (ANSI) offers criteria for reducing the environmental impacts of stone harvest and processing and requires a chain of custody for stone so consumers can know for sure the path their “local” stone has traveled.
The stone quarrying process is often lumped together with metal mining’s heavy blasting and toxic runoff, but Kathy Spanier, the marketing director at Coldspring in Minnesota and a participant in the development of the new stone standard, emphasizes (more…)
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