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What is Manhole?
A manhole is a covered opening or access point on the surface of a road, sidewalk, or other paved area that provides entry into an underground utility or infrastructure system. It is typically a round or rectangular hole large enough for a person to enter and perform maintenance or inspection tasks. Manholes are common in urban areas and serve as access points to underground networks, including sewer systems, storm water drains, electrical and communication cables, water pipelines, and gas lines. They allow workers to enter these underground structures for repairs, cleaning, inspections, or installations.
Despite their importance, manhole covers can often go neglected, resulting in deterioration over time. Various factors contribute to this issue. First, the sheer number of manholes in a city creates challenges for regular inspections. Municipal agencies may lack the resources—both financial and personnel—to effectively monitor every manhole, especially in larger urban settings. Furthermore, the underground utility networks can be complex, making it difficult to ascertain the needs of specific manhole covers without extensive investigation.
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