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History of Persian domes : ウィキペディア英語版 | History of Persian domes
Persian domes have an ancient origin and a history extending to the modern era. == Overview ==
Persian domes from different historical eras can be distinguished by their transition tiers: the squinches, spandrels, or brackets that transition from the supporting structures to the circular base of a dome. Drums, after the Ilkanate era, tend to be very similar and have an average height of 30 to 35 meters from the ground. They are where windows are located. Inner shells are commonly semi-circular, semi-elliptical, pointed, or saucer shaped. The outer shell of a Persian dome reduces in thickness every 25 or 30 degrees from the base. Outer shells can be semi-circular, semi-elliptical, pointed, conical, or bulbous, and this outer shape is used to categorize them. Pointed domes can be sub-categorized as having shallow, medium, and sharp profiles, and bulbous domes as either shallow or sharp. Double domes use internal stiffeners with wooden struts between the shells, with the exception of those with conical outer shells.
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「History of Persian domes」の詳細全文を読む
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