Oregon's Covered Bridges - Bill Cockrell - 書籍 - Arcadia Publishing Library Editions - 9781531637385 - 2008年5月21日
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Oregon's Covered Bridges

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発送予定日 年10月5日 - 年10月21日
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Rugged individuals armed with hand tools, sweat, and ambition began building covered bridges in Oregon during the mid-1850s. These bridge builders often camped out at remote sites, living off the land or contracting with local farmers for food. Early owners of covered bridges financed construction by charging tolls--3cents for a sheep, 5cents for a horse and rider, and 10cents for a team of horses and wagon. In the early 20th century, the state provided standard bridge and truss designs to each county, and most of the resulting structures incorporated the Howe truss. With the abundance of Douglas fir and the shortage of steel during the world wars, the construction of wooden covered bridges continued well into the 1950s, mainly in the Willamette Valley. During the 1920s, Oregon boasted more than 350 covered

メディア 書籍     Hardcover Book   (ハードカバー付きの本)
リリース済み 2008年5月21日
ISBN13 9781531637385
出版社 Arcadia Publishing Library Editions
ページ数 130
寸法 170 × 244 × 10 mm   ·   412 g
言語 英語  

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