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The berm shed, a hallmark of permaculture design, is an eco-friendly, earth-sheltered structure renowned for its unique construction techniques. Earthworks are fundamental to its creation, as the surrounding landscape is carefully shaped to form the berm that will encase a portion of the shed's sloping roof. This berm serves a dual purpose, acting as both a natural insulator and a source of thermal mass, effectively regulating the internal temperature. The structural framework of the berm shed is often built using round wood timber framing, a technique that prioritizes using logs instead of conventional dimensional lumber, further enhancing its sustainable appeal. However, the longevity of these logs, especially when in contact with soil, is a crucial consideration. The sources recommend peeling the bark from posts before burying them, a technique born from experience and aimed at minimizing the risk of rot. Another technique for ensuring the durability of the structure involves incorporating gravel into the post holes. The gravel facilitates drainage, preventing water from pooling around the base of the posts and contributing to premature decay. These carefully considered details, combined with the innovative "attic" cell design at the termination ends of the shed, as described in source, showcase a commitment to sustainable building practices that go beyond mere functionality, exemplifying the core principles of permaculture.
The SKIP program, an acronym for Skills to Inherit Property, enables individuals to "skip the rat race" and acquire land for sustainable living by demonstrating practical skills through the completion of "Badge Bits" (BBs). To join the program, aspiring homesteaders, referred to as "Skippers," create free accounts on permies.com and select BBs they wish to complete from the PEP (Permaculture Experience according to Paul) curriculum. BBs encompass a wide range of permaculture-related skills, such as gardening, natural building, and food preservation. Skippers document their completion of each BB with pictures and videos, which are then reviewed and verified by the permies.com community. As Skippers complete BBs, they earn badges that reflect increasing levels of competency, starting with the Sand badge and progressing through Straw, Wood, and Iron. These badges, displayed on their profiles, serve as evidence of their skills and dedication to potential "Otisies" – landowners seeking worthy successors for their properties. The permies.com forums provide a space for Skippers to interact, share experiences, and seek guidance, fostering a supportive community within the SKIP program.
WOFATI, an acronym coined by Paul Wheaton, stands for Woodland Oehler Freaky-cheap Annualized Thermal Inertia. It defines a type of earth-sheltered, passive building that blends affordability with energy efficiency. Inspired by the work of Mike Oehler, a pioneer of earth-sheltered building, WOFATI designs use locally sourced, natural materials, such as wood and earth, to minimize both cost and environmental impact. Central to the WOFATI concept is Annualized Thermal Inertia, which utilizes the surrounding earth as a thermal mass to moderate temperatures year-round. This means that the building stays warm in the winter by storing heat from the summer, and cool in the summer by retaining the coolness of the winter, greatly reducing the need for artificial heating and cooling. WOFATI structures typically have a large gable roof on the downhill side, and at least 35% of the uphill wall is made of glass or other light-transmitting material to maximize passive solar gain. WOFATI buildings are ideally situated on or near a woodland, emphasizing a harmonious integration with nature. Allerton Abbey, the first WOFATI, along with Wofati 0.8, are examples of this building style and can be found at Wheaton Labs.
When discussing "woodland" versus "forest," the structural and management approaches differ significantly, particularly within a permaculture context. Forests, often managed for timber production, frequently involve monoculture planting and practices like clear-cutting, which can create what Sepp Holzer calls a "conifer desert." This leads to decreased biodiversity, depleted soil health, and disrupted ecological balance. "Woodland" management, as described by Ben Law, focuses on a more holistic, interconnected ecosystem. Woodland management prioritizes biodiversity, recognizing the interconnectedness of all lifeforms within the ecosystem. Active human participation is encouraged, mimicking the sustainable land management practices of Indigenous cultures, as exemplified by the HUSP (Horticulture of the United States of Pocahontas) concept. Woodlands are viewed as spaces where humans actively participate and nurture, promoting long-term health and resilience. This active management ensures the woodland provides not only timber but also food, medicine, and wildlife habitat. The selection of "woodland" in Wofati design reflects a conscious shift away from extractive forestry practices and toward a more sustainable and harmonious relationship with the natural world. In essence, the distinction between woodland and forest highlights the crucial role of human management in shaping the structure and health of these ecosystems, emphasizing the permaculture principle of responsible stewardship of natural resources.