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This is a list of ancient monoliths found in all types of Greek and Roman buildings. It contains monoliths which were *quarried, but not moved *quarried and moved *quarried, moved and lifted clear off the ground into their position (architraves etc.) *quarried, moved and erected in an upright position (columns etc.) Transporting was done by land or water (or a combination of both), in the later case often by special-built ships such as obelisk carriers. For lifting operations, ancient cranes were employed since ca. 515 BC,〔 such as in the construction of Trajan's Column. It should be stressed that all numbers are estimations, since only in the rarest cases monoliths were actually weighed. Rather, weight is calculated by multiplying volume by density. The main source, J. J. Coulton, assumes 2.75 t/m³ for marble and 2.25 t/m³ for other stone. For an explanation of the large margin of error, which often leads to widely differing numbers, see these introductory remarks. == Greek monoliths == Below a selection of Greek monoliths sorted by their date. 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「List of ancient Greek and Roman monoliths」の詳細全文を読む スポンサード リンク
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