Celebrating Conservation and Sustainability 
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DETAILS

LocationCulpeper, Virginia United States
Size44 acres

A 45-acre site 70 miles southwest of Washington, D.C. serves as the home for the Library of Congress’s Motion Picture, Broadcasting, and Recorded Sound Collections. The 400,000-square-foot complex consolidates the world’s largest audio-visual collection and provides improved facilities for research, digital conversion, long-term conservation, and public appreciation of the collection’s 11 million items, some dating to the original copyrights of Thomas Edison.

The landscape design also celebrates the spirit of conservation by creating a sylvan setting that minimizes the impact of buildings on the upland meadow site and meets the highest standards for sustainable design. The project’s economic sustainability highlights the adaptive reuse of a bunkered building with a high level of temperature control. Burying nitrate vaults into the mountain and covering the rest with green roof ensured cool enough temperatures to store film with great energy efficiency and a reduced cooling cost. In addition, the choice to restore so much of the landscape to native, natural plantings that required no maintenance after the initial plantings keeps upkeep costs to a minimum, while achieving a sustainable landscape.

The team clustered the building program within five of the 45 acres and configured the structures to conform to the hillside topography, thereby minimizing grading and site disturbance. SWA’s on-structure roof gardens cover all three buildings, masking their presence on the rural Virginia hillside and forming one of the largest single roof gardens east of the Mississippi River. Of the total 228,000 square feet (five acres), 146,000 square feet is “extensive” green roof, with a planting profile of less than 10 inches and a palette of sedum and grasses. The remaining 82,000 square feet is “intensive” green roof, with a deeper profile varying from 12 to 48 inches. The intensive profile reflects the stepped profile of the Collections Building and supports a wider range of plant material. Its depth helps to reduce cooling loads required to maintain the Collections Building storage vault temperatures.

While the Collections and Nitrate Buildings are largely buried, the central three-story Conservation Building emerges above grade to provide natural light to offices and work spaces through a series of terraced concrete arcades. The building follows the slope to enclose a central lawn court, which represents the project’s only formal, irrigated open space and functions as both a viewing garden and an outdoor event space. The courtyard consists of stepped lawn terraces around a circular reflection basin that reflects the shifting cloud patterns of the foothill region, bringing sky to earth and a sense of openness into the heart of the facility.

The arcades themselves provide a series of trellises, and the arcade beams double as irrigated, insulated planters for deciduous Boston ivy. These living awnings shade the floor-to-ceiling glazing of the workspaces in the summer, while in winter the leafless vines allow sunlight to penetrate deep into the building and offset energy demands.

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