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A log cabin is a dwelling constructed of logs, especially a less finished or architecturally sophisticated structure. Log cabins have an ancient history in Europe, and in America are often associated with first generation home building by settlers. ==European history of log cabins== Construction with logs was described by Roman architect Vitruvius Pollio in his architectural treatise ''De Architectura''. He noted that in Pontus (modern-day northeastern Turkey) dwellings were constructed by laying logs horizontally overtop of each other and filling in the gaps with "chips and mud". Historically log cabin construction has its roots in Scandinavia and Eastern Europe. Although their origin is uncertain, the first log structures were probably being built in Northern Europe by the Bronze Age (about 3500 BC). C. A. Weslager describes Europeans as having: Nevertheless, a medieval log cabin was considered movable property (a chattel house), as evidenced by the relocation of Espåby village in 1557: the buildings were simply disassembled, transported to a new location and reassembled. It was also common to replace individual logs damaged by dry rot as necessary. The Wood Museum in Trondheim, Norway, displays fourteen different traditional profiles, but a basic form of log construction was used all over North Europe and Asia, and later imported to America. Log construction was especially suited to Scandinavia, where straight tall tree trunks (pine and spruce) are readily available. With suitable tools, a log cabin can be erected from scratch in days by a family. As no chemical reaction is involved, such as hardening of mortar, a log cabin can be erected in any weather or season. Many older towns in Northern Scandinavia have been built exclusively out of log houses, which have been decorated by board paneling and wood cuttings. Today construction of modern log cabins as leisure homes is a fully developed industry in Finland and Sweden. Modern log cabins often feature fiberglass insulation and are sold as prefabricated kits machined in a factory rather than hand-built in the field like ancient log cabins. Log cabins are mostly constructed without the use of nails and thus derive their stability from simple stacking, with only a few dowel joints for reinforcement. This is because a log cabin tends to slightly compress as it settles over a few months or years. Nails would soon be out of alignment and torn out. File:Izba.jpg|A typical Russian log cabin: Izba in the village of Kulashino in Tver Oblast File:Oseloftet ørnehode.jpg|Ornamental woodcarving in the shape of an eagle's head on a projecting log in the wall of the loft from Ose at Norsk Folkemuseum. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「log cabin」の詳細全文を読む スポンサード リンク
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