… New technologies for road construction also underwent major changes under this system. An early engineer was John Metcalf (1717-1810), who, though blind, invented a technique for compacting layers of peat, but the more decisive innovation was made by J. L. McCaddam. His technique, which is still called "McCaddam's," was a method of paving roads by laying multiple layers of pebbles on them to improve drainage and make them durable for wagon traffic. … *Some of the terminology that mentions "Metcalf, J." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… 道路建設の新技術も,この制度のもとで大変化を遂げる。初期の技術者としては,盲目ながら泥炭層を固める技術をあみ出したメトカーフJohn Metcalf(1717‐1810)が知られているが,より決定的な技術革新は,J.L.マッカダムによってなされた。いまだに〈マッカダム〉の名でよばれている彼の技術は,小石を何層にも敷きつめて排水をよくするとともに,荷馬車の通行にも耐えられるようにした道路舗装の方法である。… ※「Metcalf,J.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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