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Design for frames and covers, Syracuse and Brooklyn, New
York, circa 1914. The earliest known foundry catalog is from the early
1860s.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 558. |
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Design for manhole cover locking device, Boston, Massachusetts,
circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 559. |
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Design for separate sewers, Philadelphia, Pennsylvania,
circa 1914. Early separate sewers (sanitary and storm water) were laid
vertically above/below each other so only one trench had to be dug.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 42. |
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Designs for several sewer cross-sections, circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 449. |
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Design for standard manhole head (early name for cover)
and cover, Philadelphia, Pennsylvania, circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 557. |
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Design for Van Vraken flush-tank, circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 594. |
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Design for wellhole (an extremely deep drop structure),
Cleveland, Ohio, circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 544. |
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Design for wellhole (an extremely deep drop structure),
Brooklyn, New York, circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 548. |
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Design for wellhole (an extremely deep drop structure),
Minneapolis, Minnesota, circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 547. |
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Design for a double drop manhole, Medford, Massachusetts,
circa 1914.
Source: Leonard Metcalf and Harrison P. Eddy, American Sewerage Practice,
Vol. 1: Design of Sewers, 1st edition (New York: McGraw-Hill, 1914),
p. 542. |