Manhole Covers - Triptych is a photograph by Nikolyn McDonald which was uploaded on June 7th, 2019.
Manhole Covers - Triptych
Manhole covers. Every municipality, city, or even small town has them. They provide access to the underground system of pipes and tunnels used to... more
Title
Manhole Covers - Triptych
Artist
Nikolyn McDonald
Medium
Photograph - Digital Composite
Description
Manhole covers. Every municipality, city, or even small town has them. They provide access to the underground system of pipes and tunnels used to carry sanitary waste and/or storm water from buildings and streets to treatment facilities or other disposal areas.
Early systems combined waste and storm run-off, but modern systems separate the two functions. All three of the cast iron lids in this triptych are located in Papillion, Nebraska, a suburban town in the Omaha metropolitan area where the systems are separate. The center square in this collage shows a storm sewer cover; the one on the right is to a municipal waste system.
Although there are exceptions, most manhole covers around the world are round. There are many reasons for this shape. Round lids cannot fall through circular openings; the openings are to pipes and round tubes are best against the compression of the earth around them; round covers require less material than would a square cover of the same diameter/width; they don’t need to be rotated to fit; and they can be moved by being rolled rather than lifted. There are other reasons, but I leave it to you to research this subject for yourself.
Featured: Seen But Not Noticed; Wide Format Photography
Uploaded
June 7th, 2019
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