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Shortly before 5:30 a.m., a manhole cover lifted off from its launching pad on Hill Street in Old Louisville and blasted through Pam Smith's roof, decking a coffee table in the process.
[2] [7] [14] Manhole covers shot up into the sky and came crashing down with great destructive force. [14] [15] [16] One manhole cover crashed completely through the ceiling and floor of a third-floor apartment on Second Street, and another narrowly missed a child when it landed in a house at the corner of 9th and Hill streets. [15]
A round manhole and its cover. A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.
In the video, shot in the city of Shangluo in Shaanxi Province on August 1, a couple of manhole covers bounced up and down repeatedly on a road, while vehicles drove past next to it.
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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 ...
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 ...
The FHWA manual [2] cites the spray-injection procedure as an efficient alternative to semi-permanent repair. It requires specialized equipment, however. It consists of: 1. Blowing water and debris from the pothole 2. Spraying a tack coat of binder on the sides and bottom of the pothole 3. Blowing asphalt and aggregate into the pothole 4.