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Manhole covers are often made out of cast iron, concrete or a combination of the two. This makes them inexpensive, strong, and heavy, usually weighing more than 113 kilograms (249 lb). This makes them inexpensive, strong, and heavy, usually weighing more than 113 kilograms (249 lb).
Neenah Foundry; Company type: Private; Subsidiary: Industry: Foundry: Founded: 1872, 153 years ago: Headquarters: 2121 Brooks Avenue Neenah, Wisconsin, U.S.: Products: Cast iron infrastructure solutions (manhole frames and covers, inlet frames and grates, trench frames and grates, airport products, bridge drainage, tree grates, detectable warning products, downspout boots, access and hatch ...
January 1 – In South Boston, Massachusetts, a paper boy was killed by a flying manhole cover, 11 persons were severely injured and property damage running into thousands of dollars was entailed in a terrific gas explosion that threw 13 manhole covers into the air. When gas company employees used pickaxes to uncover the leak to repair the pipe ...
A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...
When a structure is so severely corroded that human entry is a risk, spinning head application permits an “un-manned” consolidation of the manhole. High pressure dry spray: this method, also called “ shotcrete ” or “gunite” is allowing a faster rate of rehabilitation, and also to make a thicker application in a single pass.
EJ Group, formerly East Jordan Iron Works, is an American manufacturer of iron products, headquartered in East Jordan, Michigan.The company manufactures and distributes iron construction castings (Municipal castings), fabricated products, composite products, water distribution solutions, and other infrastructure access products for water, sewer, drainage, telecommunications, and utility ...