Aesthetic Value and Urban Design
anti parking posts

Manhole covers are a removable cover that serves as a lid to close the manholes. Traditionally, manhole covers were made of cast iron, concrete, or even a combination of the two. These materials are preferred due to specific qualities like durability, inexpensive, and heavy enough to stay in place. However, technology has led to various alternative manhole cover materials like composite, fiberglass, and plastic.