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The construction of a berm shed, a sustainable and aesthetically pleasing storage solution, involves a unique process that utilizes natural building techniques and earth-sheltering principles. First, the building site is prepared using earthworks, shaping the surrounding land to create a berm, which is a raised bank of soil that will eventually cover a portion of the shed's sloping roof. Round wood timber framing is a common technique employed in berm shed construction, utilizing logs sourced from the property instead of commercially produced dimensional lumber. These logs are carefully selected and placed to form the structural framework of the shed, including the walls and roof supports. Once the timber frame is erected, a moisture barrier, such as billboard material or layers of poly sheeting and newspaper, is installed over the logs to protect them from the elements. Finally, soil is carefully layered on top of the moisture barrier, creating the berm and providing insulation, thermal mass, and a natural aesthetic. The construction process prioritizes using natural, locally sourced materials and minimizing the use of energy-intensive and potentially toxic commercial products, aligning with permaculture principles of sustainability and self-sufficiency.
WOFATI structures are characterized by a thoughtful design that prioritizes passive systems and natural, locally sourced materials. The "two-skin" system, composed of a double layer of polyethylene membrane, encapsulates the earthen roof, providing a durable and waterproof barrier. The lower layer hugs the structure, while the upper layer defines the thermal mass surrounding it, with at least eight inches of dirt between the layers and sixteen inches on top. WOFATI designs emphasize a harmonious integration with the surrounding woodland, incorporating the "soil on wood" building technique. This method eliminates the need for a conventional concrete foundation, making construction faster and more affordable. A distinctive feature of WOFATI houses is the large gable roof on the downhill side, often incorporating glazing to allow light penetration, while at least 35% of the uphill wall features windows for optimal passive solar gain. This strategic placement and sizing of windows is crucial for maximizing natural light and regulating internal temperature, contributing to the effectiveness of Annualized Thermal Inertia.
Hugelkultur is a permaculture technique that can be described as "soil on wood". It involves burying wood, including logs, branches, and twigs, to build raised garden beds. This technique, which can be small or as large as a kilometer, creates a beneficial environment for plants. As the wood decays, it provides nutrients to the soil and improves drainage and aeration. It also becomes "a sponge to hold water," reducing or eliminating the need for irrigation. Using wood that would otherwise be discarded for hugelkultur is an environmentally sustainable way to improve soil health and grow food
WOFATI, which stands for Woodland Oehler Freaky-cheap Annualized Thermal Inertia, represents a sustainable building solution that merges affordability and energy efficiency. Developed by Paul Wheaton, WOFATI draws inspiration from Mike Oehler's earth-sheltered designs, enhancing them with cost-saving strategies and a focus on harmonizing with the surrounding environment. This innovative approach prioritizes using locally sourced natural materials like wood and earth, thereby minimizing reliance on manufactured products and lessening the building's ecological impact. The concept of Annualized Thermal Inertia is central to WOFATI design, harnessing the surrounding earth as a thermal mass to regulate temperature fluctuations throughout the year. This natural heating and cooling system stores summer heat for winter warmth and retains winter's coolness to moderate summer temperatures, significantly reducing energy consumption. WOFATI buildings typically feature large windows strategically placed on the uphill side to maximize passive solar gain, further enhancing energy efficiency. As the name suggests, WOFATI structures are ideally situated on or near a woodland, emphasizing a symbiotic relationship with nature. Examples of WOFATI buildings, including Allerton Abbey and Wofati 0.8, can be found at Wheaton Labs in Montana
Rocket mass heaters are better than natural gas heaters because rocket mass heaters are free to operate and have less than 5% of the carbon footprint.