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2. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   A manhole cover is a removable plate ... Manhole covers may also be made from glass-reinforced plastic or other ... local utility company Eversource is replacing ...

3. ISO 15398 - Wikipedia

   en.wikipedia.org/wiki/ISO_15398

   The constraint "non-traffic areas" is also the crucial difference to the general European Standard for manhole covers EN124, which is only for vehicular access areas. Plastic-manhole covers according to ISO 15398 are designated for the commitment on control- and inspection chambers in pedestrian (class A 15) and light vehicular areas (max ...

4. Sanitary sewer - Wikipedia

   en.wikipedia.org/wiki/Sanitary_sewer

   A manhole cover for a sanitary sewer access point. View looking down into an open manhole showing two converging sanitary sewer lines. The larger line enters from the right and changes direction within the manhole to exit from the top of the photo. A smaller line enters from the bottom of the photo under the access steps.

5. Sacramento’s history is underfoot. Take note of these manhole ...

   www.aol.com/sacramento-history-underfoot-note...

   About 6-8 companies do the bulk of municipal business, Kurkul estimated. The manhole cover business has turned over the years, from the sort of ornate covers that a business like Berry’s Foundry ...

6. Manhole - Wikipedia

   en.wikipedia.org/wiki/Manhole

   Manhole covers in Helsinki, Finland. Manhole closings are protected by a grating or manhole cover, a flat plug designed to prevent accidental or unauthorized access to the manhole. These covers are traditionally made of metal, [2] but may be constructed from precast concrete, glass reinforced plastic or other composite materials (especially ...

7. Neenah Foundry - Wikipedia

   en.wikipedia.org/wiki/Neenah_Foundry

   Neenah Foundry. Neenah Foundry is a manufacturing company in the north central United States, based in Neenah, Wisconsin. The company manufactures cast iron manhole covers, gratings, and similar items for municipal and construction applications. Neenah Enterprises, Inc. manufactures iron castings for the heavy truck, agriculture, construction ...