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Manholes, Lampholes, Grit Basins (2) (Click on thumbnails to enlarge image) |
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Manholes, Lampholes, Grit Basins (2) (Click on thumbnails to enlarge image) |
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Pipe and brick lamphole designs, circa 1916.
Source: A. Prescott Folwell, Sewerage: The Designing, Construction, and Maintenance of Sewerage Systems, 7th edition (New York: John Wiley and Sons, 1916), p. 159. |
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Design details for manhole, lampholes, and manhole covers, circa 1916. Source: A. Prescott Folwell, Sewerage - The Designing, Construction, and Maintenance of Sewerage Systems, 7th edition (New York: John Wiley and Sons, 1916), p. 159. |
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Design details for flush tank, inlets, drop manhole and house connection, circa 1916. Source: A. Prescott Folwell, Sewerage - The Designing, Construction, and Maintenance of Sewerage Systems, 7th edition (New York: John Wiley and Sons, 1916), p. 161. |
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Design details for interceptors, storm overflows, inverted siphons and house connections, circa 1916. Source: A. Prescott Folwell, Sewerage - The Designing, Construction, and Maintenance of Sewerage Systems, 7th edition (New York: John Wiley and Sons, 1916), p. 171. |
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Sewer manhole of concrete blocks at Mt.
Horeb, Wisconsin, circa 1918. Shown under construction and completed.
Source: W. G. Kirchoffer, "Novel Sewerage System and Sewage Treatment Plant at Mt. Horeb, Wis.," Municipal and County Engineering, Volume LV, No. 2 (August 1918), p. 61. |
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Sewer crew: Two men pull a coworker from an alley sewer
manhole. Denver, Colorado. The man in the hole wears a mask, other men
stand by. Dated between 1920 and 1940. Photographer: Harry Mellon Rhoads,
1880 or 81 - 1975.
Source: Western History/Genealogy Department, Denver Public Library. |
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Dirt pan, 1934. Use of dirt pans started in the 1890s.
The accumulation of grit in sewers was a problem that was recognized early
on, since early manholes had vent holes and most of the early streets
were unpaved. Early designers came up with these pans to collect grit/gravel
but let water pass through. The pans would sit on the manhole cover rim
assembly, just beneath the cover (proper).
Source: Municipal Castings, Neenah Foundry Co., Neenah, Wisconsin - Catalog "N" (Neenah, Wisconsin: Neenah Foundry Co., 1934), p. 13. |
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Original (1936) technical drawing of an interesting feature of the Lodz Sewer System – snow dumps, which were usually built on egg-shaped brick sewers. After heavy snowfalls it is possible to continuously dump snow into a sewer through a special hatch in order to melt it by contact with warm sewage. Source: Piotr Niedzwiecki, Technical Inspector, Sewage System Department of Lodz Waterworks, Lodz, Poland. |
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Laying bricks in construction of manhole at migrant camp, Sinton, Texas. Photograph by Russell Lee, 1903-. Photo date October 1939. Source: Library of Congress, Prints & Photographs Division, FSA-OWI Collection, Reproduction number LC-USF33-012458-M4 DLC. |
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Checking sewers in Bisbee, Arizona. April
1940. Photograph by Russell Lee, 1903-.
Source: Library of Congress, Prints & Photographs Division, FSA-OWI Collection, Reproduction No. LC-USF33-012677-M1 DLC |
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Flight sewer, Baltimore, Maryland. Source: Harold E. Babbitt, Sewerage and Sewage Treatment, 6th edition (New York: John Wiley and Sons, 1949), p. 103. |
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Manhole and wellhole.
Source: Harold E. Babbitt, Sewerage and Sewage Treatment, 6th edition (New York: John Wiley and Sons, 1949), p. 102. |
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Construction of early sewer -- note manholes. Date unknown.
Source: National Clay Pipe Institute. |
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