House raising
House raising (house lifting, house jacking, barn jacking, building jacking) is the process of separating a building from its foundation and temporarily raising it with hydraulic screw jacks. The process is the first step in structure relocation in which the building is moved to a different location. House raising may also be a part of a renovation to build a foundation under an existing house or make a house larger by building a new floor level creating a two story house. Often employed in areas that are prone to flooding and storm damage, this process can be achieved through the use of either timber piles or helical piles. Once a house is raised and supported on cribbing, a new foundation can be constructed beneath it. After Hurricane Katrina and Hurricane Sandy large numbers of houses in parts of Louisiana, New York and New Jersey were raised to avoid future flooding.
Bush carpentry
Ron Edwards asserts that no training at all is required. The requisites are 'a calm mind, reasonable health, and a willingness to learn'. Edwards points out that the early settlers built their homes without prior knowledge and experience, and 'many of these buildings are still in existence a century later'. Edwards adds, 'Confidence in your own ability is the first requirement ... the second is access to knowledge.'