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3D Printing of coastal protection Reefs

The Albanian coastline has been declining in recent years due to coastal erosion and uncontrolled...

Developed by NOAQ Flood Protection AB

The NOAQ Boxwall is a mobile freestanding flood barrier, intended for temporary use to protect buildings and other objects from flood water. It consists of elements "boxes" that are snapped together to form a protective chain - a box wall. It is self-anchored, as it is automatically stabilized by the weight of the flood water itself. A boxwall can also be used to redirect fast flowing water in a flash flood situation. A third application is making a temporary basin - a "boxpool".

TRL9. System ready for full scale deployment
Actual system proven in operational environment (competitive manufacturing). The solution is used successfully in a structurally operational environment. The user can and wants to recommend the solution to others. The NOAQ Boxwall has been tested both outdoors and in a hydraulic laboratory. It has shown to be stable and has performed well. It has been on the market for almost 10 years and has been used successfully to save property in real flood situations.

See more information about this level and the TRL and SRL levels.

The main components of the system have been tested separately, and an initial integration exercise has been conducted.

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How does it work?

A boxwall is made by snapping together a number of individual elements, “boxes”. Each box has a horizontal part laying on the ground on the flood side. The weight of the flood water entering on top of the horizontal part press the device against the ground, and the barrier is hereby anchored reliably. A couple of rubber soles on the underside provide the necessary friction. The boxwall can even be overtopped without tipping or sliding.

Limitations/conditions under which this innovation does not work or is less effective

The ground need to be reasonably even, and as with all temporary barriers it should not be used on ground that is prone to erosion.

Added value
Using the own weight of the flood water for anchoring the barrier has made it possible to make the barrier itself very light. The boxwall weighs only 5.5 kg/m and each box 3.4 kg. The low weight in combination with the simple assembly means a very high speed of deployment. Two persons can build a 200 meter long boxwall in one hour. This means that more property can be protected in less time, i.e. a quicker response to a flood threat. The light weight and simple handling also means that more people can be engaged in the work. The flood victims of the past will be valuable resources in the future. The components of the boxwall can also be used to assemble temporary basins to contain liquids of different kinds, so called “boxpools”. Therefore the boxwall can be regarded as a multi purpose device.

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