Manhole: meaning, definitions and examples

Etymology

• The term combines 'man', referring to workers, and 'hole', the space they enter.
• First recorded use of 'manhole' dates back to the late 19th century, highlighting its urban utility.
• There are variations in names, like 'access hole' or 'utility hole', but 'manhole' remains the most common.

Cultural Significance

• Manholes have become a canvas for street art, with some artists painting unique designs on the covers.
• In Japan, decorative manhole covers are a point of pride and a tourist attraction, showcasing local culture and history.
• Movies and books sometimes include manholes as secret entrances to new worlds, playing on the idea of hidden spaces.

Design and Engineering

• Modern manholes are designed to withstand heavy traffic loads and are often made from durable materials like cast iron.
• Many urban areas incorporate safety features in manhole design to prevent falls or accidents.
• Manholes are essential for maintaining underground infrastructure, providing access to sewer systems, water lines, and electrical wiring.

Historical Context

• The first manholes were created in London in the 19th century, as the city developed its sewer systems.
• Historically, access to underground spaces was limited; manholes made it easier for workers to resolve issues without disrupting the road above.
• Manhole covers have also evolved from simple designs to more secure and sophisticated locking mechanisms over the years.

Safety and Regulations

• Many cities have specific regulations that dictate the materials and designs for manholes to ensure public safety.
• Regular maintenance and inspection of manholes are required to prevent accidents and ensure proper function.
• In some communities, there are educational campaigns to raise awareness about the dangers of open manholes.