Bags and Burgoni represent the natural evolution of traditional sandbags. Over the years, they have found extensive use in the stabilization of the Po River and the protection of hydraulic structures at Isola Serafini, Italy’s largest hydroelectric power station.

These units are made from a geotextile or metal mesh shell, often used together, and are filled with inert material, gravel, or concrete, reaching a theoretical volume of up to 50 m³.

The geotextile is placed inside a special container mounted on a pontoon, which has a bottom-opening system that allows for controlled launching of the bags.

The geotextile is placed inside a special container mounted on a pontoon, equipped with a bottom-opening system, allowing controlled launching of the bags.

The packaging and installation of the bags/burgoni typically proceed through the following steps:

• Step 1: Bring the pontoon with the openable bottom container alongside the sand supply pontoon.
• Step 2: Insert the geotextile bag and/or metal mesh into the container.
• Step 3: Fill the bag/burgone with inert material from the storage site.
• Step 4: Close and sew the bag.
• Step 5: Move the pontoon to the launch point using a support boat.
• Step 6: Georeferenced positioning of the pontoon and launching of the bag/burgone.

The launching and installation operations are supported by a train of floating pontoons with stabilization poles, ensuring alignment and correct placement according to the project.