An FRP manhole is a manhole cover or chamber cover made from Fiber Reinforced Polymer (FRP), a composite material of glass or carbon fibers within a polymer matrix. FRP manholes are known for their high strength-to-weight ratio, making them lightweight and easy to handle while still withstanding heavy loads. They are also highly durable, resistant to corrosion, rust, and harsh weather, making them ideal for environments like sewage treatment plants and coastal areas where traditional metal covers would degrade.
