Mason Lane Farm | de leon & primmer architecture workshop

Mason Lane Farm (eng) ENG - The Mason Lane Farm Operations Facility is a new complex for farm equipment servicing, re-fueling & storage, as well as providing seasonal storage for grain & hay. The facility supports a 2,000-acre property utilized for agriculture, recreation, wildlife habitat and conservation purposes. The project has been submitted for LEED Gold Level certification and is notable as the first of its type for implementing LEED criteria to an agricultural project. Rooted in the simplicity of regional farm structures and in concert with the client’s priorities for responsible stewardship of the land, the farm complex utilizes simple, passive sustainable approaches that are specifically based on an understanding of the regional climate and the nuances of the landscape. For reasons of both economy and ease of maintenance, sustainable building strategies are decidedly ‘low-tech’, favoring conventional construction methods & ordinary materials over specialized systems. In particular, the project implements strategies that take advantage of the cross-synergies between site & building design, focusing on a holistic approach where both components work as a single integrated system. Consolidating the various programmatic elements into two barn buildings and a grain silo, the majority of the project site is allocated to the circulation & access requirements of large-scale farm equipment. Taking advantage of the existing topography, the porous, drivable gravel surfaces are pitched to channel storm water into two ‘rain gardens’ planted with native vegetation. Excess run-off is collected within these basins and allowed to percolate back into the ground water table. In order to minimize maintenance, building roof gutters are eliminated and replaced with ‘site gutters’, a system of drivable, shallow concrete swales located below each roof eave, which directs storm water to the collection basins. The remainder of the project site is planted with native & regionally-adapted plants that do not require irrigation. The two primary buildings (Barn ‘A’ and Barn ‘B’) are arranged to frame an outdoor work courtyard, allowing for the consolidation of outdoor lighting requirements to an internalized site zone and away from the farm complex property perimeter, preserving ‘dark sky’ conditions. Barn ‘A’, with fully enclosed storage & work areas, utilizes a standard prefabricated wood truss frame clad with corrugated metal panels. Emphasizing the layering of construction, building elements that are typically hidden (such as wall substrates, fastening screws & alignment lines) are incorporated as design features and reinterpreted as ‘finish’ materials. Natural light, ventilation and views are provided to all interior spaces through full- height operable windows which working in concert with a whole-house fan to draw air through the building. Barn ‘B’, a large covered shed used to store both hay & equipment, is clad in a lattice grid of locally-harvested bamboo sourced only 35 miles from the project site. Considered a fast-growing invasive ‘weed’, the bamboo is a material nod to the squarebale hay that is stacked at each end of the barn, while also providing a breathable skin that allows the hay to dry through natural ventilation. Since Barn ‘B’ is an open-air structure vulnerable to wind-uplift forces, the concrete drainage channels below its roof eaves also function as a counterweight through an interlocking detail with the column concrete footings below grade.