The manholes located along these pipes are subject to water collection from several potential sources.

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These include high voltage electricity, extremely hot-water pipes, oxygen-deprived air, etc. Students certainly should never attempt to remove one of the heavy covers from a manhole-they are heavy for a reason.

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For the most part, the utility manholes are located along the piping networks in order to provide access down into the piping components. There are usually valves located in the manholes for controlling water flow.

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