Have you ever wondered: “what is a manhole cover?” A manhole cover is a removable plate used to close off an opening to a confined space such as a sewer, utility access point, or storm drain. They are typically round or rectangular and drop into or sit atop an underlying frame or structure. Manhole covers are often made from cast iron, ductile iron, steel, concrete, composite materials, or plastic.
Manhole covers can be found throughout urban landscapes, often blending seamlessly into the pavement. However, these seemingly mundane objects possess unique characteristics that offer insight into the identity and history of a particular city. In fact, some cities have embraced the decorative potential of manhole covers, commissioning artists to design covers that reflect local culture, history, or even humor. For example, certain covers in Tokyo feature images of iconic city landmarks and symbols, turning simple metal discs into mini art installations that tell a story of place and community.
manhole cover in house
