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tatara@‚“a
KEY WORD :@architecture / general terms
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Also written èm. The modern character is ro èn, and can mean furnace. Tatara is an ancient word meaning refinery. A building in which iron was refined. Sand, which contained iron, and also called magnetic sand satetsu »“S, was refined in ancient times as early as the Yayoi period. Some tatara were circular maru-uchi tatara ŠÛ‘ō‚“a, and some were square kaku-uchi tatara Šp‘ō‚“a. The roof style depended upon the ground plan *heimen-zu •½–ʐ}, and on the tie beam construction. Two roofing methods are called kiriage-zukuri Øã‘¢ or inunobori-zukuri Œ¢“o‘¢ and two methods of arranging tie beams daimochi ‘䎝, are called oohira-zukuri ‘啽‘¢ or kohira-zukuri ¬•½‘¢. The TETSUZAN HITSUYOU KIJI “SŽR•K—p‹LŽ– (date unknown), states that pillars oshitatebashira ‰Ÿ—§’Œ 120-150cm in circumference at eye level, and 9m high, were erected in the four corners, 7.2m apart. These pillars were called *hottatebashira –x—§’Œ and were inserted 3.6m into the ground so that 5.4m remained above ground. Then they were pushed outward until the tops of the pillars were 9m apart. Four daimochi purlins were attached to the pillars to form a frame. Rafters called nagao ’·”ö were leaned against the purlins and the lower ends were inserted into the ground. A gable roof with openings to allow air to enter and smoke to escape was constructed above the framework.
Near the tatara were other smaller sheds or huts used to store iron, sand or charcoal. Living quarters were provided for the overseer motogoya Œ³¬‰®.
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