Culvert balloons are essentially large inflatable bags that can be placed inside culverts to prevent them from becoming clogged with debris.

The Lead Rubber Bearing (LRB) is an innovative seismic isolation device that has been designed to mitigate the impact of earthquakes on structures.

As an effective passive control method, base-isolated structure can significantly reduce the seismic response of the structure by adjusting the natural vibration period of the original structure system to keep it away from the predominant period of the earthquake ground motion.

Seismic bridge bearings play a key role in ensuring the safety and durability of bridges during earthquakes. These bearings are designed to absorb the energy of seismic waves, reduce the forces transmitted to the bridge superstructure, and protect it from damage.