FRP composite manhole covers (Fiberglass Reinforced Polymers), also known as fiberglass manhole covers, represent an innovation in the utilities sector. Thanks to their strength, light weight and safety, they are increasingly used as an alternative to traditional cast-iron manhole covers.
Networks and utilities served
- Sewerage and drainage: inspection of foul, mixed and storm water
- Water supply/irrigation: valves, meters, gate valves
- Gas: valve chambers, isolation points
- Electricity: MV/LV cable chambers, joints, street cabinets
- Telecommunications: fibre/copper, joint and branch chambers
- District heating/fire-fighting: valves, by-passes, underground hydrants
Other special services: railway signalling, traffic sensors, plant data networks
Types of composite manhole covers
M.M. street manhole covers used in urban infrastructure to ensure the safety of underground networks come in different classes under the EN 124 standard:
- D400 manhole covers For use in areas accessible to cars and trucks, including carriageways, shoulders and pedestrian areas.
- C250 manhole covers For use in car parks, yards, industrial sites and areas with slow-moving traffic.
- B125 manhole covers For use in areas accessible only to very light vehicles:
M.M. also offers street gully tops, also EN 124 certified, essential for storm water drainage.
Round, square and rectangular manhole covers for every need: covers for inspection chambers, trafficable covers, floating covers, and “petrol station” covers for fuel stations.trol station” per le stazioni di rifornimento carburanti.
Advantages of FRP manhole covers
FRP composite manhole covers offer numerous advantages over traditional manhole covers:
- Light weight: makes transport and installation easier, reducing operating costs
- Safety: they are slip-resistant, electrically insulating, and do not generate disturbing noise
- Theft-proof: since the composite material cannot be melted down like cast iron, they have no value for thieves
- Corrosion resistance: ideal for saline environments or in the presence of chemical agents
- Permeable to electromagnetic waves: minimal interference at radio frequencies
Contexts of use for fiberglass manhole covers
- Urban areas: pavements, squares, cycle paths, parks
- Roads: carriageways, roundabouts, shoulders, car parks, service areas
- Industrial/commercial: plants (including chemical/food industry), logistics centres
- “Heavy” infrastructure: ports, container yards, railway yards, airports
- Residential: courtyards, gardens, technical rooms
FRP manhole covers represent the future of modern urbanization, ensuring durability, safety and high performance. Find out more on our dedicated website.
