Water Retaining Capacity of the Flood Barriers

The NoFloods Flood Barriers are designed to hold a specific amount of water, influenced by various factors. Here’s an explanation of their water-retaining capacity:

• Recommended Height: The Danish Hydraulic Institute (DHI) has approved a recommended water height range of 0.8 meters up to 1.2 meters for the Flood Barrier Twin Tube 125 (twin and triple tube configurations). Adding a membrane on top of the tubes further adds to their water-retaining capacity.
• Influence of Friction: The recommended head of water is affected by the friction between the Flood Barrier and the surface on which it is deployed. In many cases, the actual height of water retained might exceed the recommended range due to this friction.
• Safety Height: For all types of surfaces, a recommended safety height is set at 0.72% of the installed height. This ensures an adequate safety margin for the barrier’s stability and effectiveness.
• Resistance Principle: The Flood Barrier’s resistance is based on the principle of utilizing water itself as a counterforce against incoming floodwater. The Twin Tube configuration consists of two pipes joined together and filled with water, creating hydraulic pressure against the surface.
• Hydraulic Pressure: The hydraulic pressure applied by the NoFloods Twin Tube Pro 125 filled with water amounts to 2,350 tons per linear meter. This hydraulic pressure contributes to the barrier’s stability.

It’simportant to note that these details are based on findingsfrom The Danish Hydraulic Institute’sreport. Exceeding the recommended head of wateror deploying the NoFloodsFlood Barrier on slippery surfaces might lead to sliding and potential accidents or damages. Adhering to the recommended guidelines helps ensure the barrier’s proper performance and safety.