The Story of a Flood-Prone City That Solved Drainage Issues with FRP Manhole Covers

A coastal city in India faced severe flooding every monsoon season due to inadequate drainage infrastructure. The primary cause? Clogged and displaced manhole covers, which prevented proper water flow, leading to waterlogging, traffic disruptions, and safety hazards for residents.

The municipal authorities had been using traditional cast iron and concrete manhole covers, but these had several issues:

1. Frequent Displacement – Heavy rains and overflowing drains would dislodge or break these covers, creating dangerous open holes.

2. Corrosion and Blockages – Metal covers rusted over time, and concrete covers cracked, leading to drainage obstructions.

3. Heavy and Hard to Maintain – Due to their weight, maintenance crews struggled to reinstall covers quickly after floods.

4. Theft Issues – Metal covers were often stolen, making the city’s drainage system even more vulnerable.

The Solution: Transition to FRP Manhole Covers

Determined to find a permanent fix, the city replaced all problematic covers with FRP (Fiber Reinforced Plastic) manhole covers. The impact was immediate:

✔ Waterlogging Reduced by 70% – The new covers featured better drainage designs, allowing rainwater to flow efficiently.

 ✔ No More Displacements – FRP covers are lightweight yet strong, and their secure locking systems ensured they stayed in place.

 ✔ Corrosion-Resistant & Long-Lasting – Unlike metal, FRP doesn’t rust or degrade in wet conditions.

 ✔ Easy Maintenance & Cost Savings – The lighter weight made installation and maintenance faster, reducing operational costs.

 ✔ No Theft Issues – With no resale value, theft incidents dropped to zero.

Thanks to FRP manhole cover , the city transformed its drainage system, making it flood-resilient, safer, and more efficient, ensuring smoother urban living even during heavy monsoons.