Venice tests flood barrier system

The video tutorial explains the installation and operation of barriers at three major inlets. These barriers consist of movable panels hinged to concrete bases, secured with steel pilings. Each panel is 20 meters wide, 28 meters long, and weighs 300 tons. The panels rise by pumping in air and displacing water, forming a barricade against tides up to three meters high. The barriers are designed to remain effective for the next 100 years, even as sea levels rise.

What are the barriers at the inlets made of?

• Floating buoys

• Fixed steel walls

• Movable panels hinged to concrete bases

• Wooden panels

How are the bases of the barriers secured?

• With ropes

• With concrete blocks

• With steel pilings

• With sandbags

What is the width of each panel?

• 30 meters

• 25 meters

• 20 meters

• 15 meters

How do the panels rise to form a barrier?

• By using electric motors

• By hydraulic pressure

• By pumping in concentrated air and expelling water

• By manual lifting

For how long is the barrier system expected to be effective?

• 50 years

• 75 years

• 100 years

• 150 years