NOAQ Boxwall

Boxwall

OVERVIEW

The NOAQ Boxwall is a freestanding temporary flood barrier. It is designed specifically for the urban environment, with even surfaces like asphalt streets and concrete floors.

A NOAQ Boxwall BW50 is able to dam 50 cm of water and is self-anchoring. It is automatically ballasted by the own weight of the flood water. The higher the water rises, the harder the barrier is pressed firm against the ground. Utilizing the weight of the water, the barrier itself doesn’t need to be heavy. Individual ”boxes” weigh only 3.4 kg each and the barrier not more than 5.5 kg per meter. This makes it easy to use, and very fast. Two people can build 200 linear metres of boxwall in an hour.

A Boxwall is built by snapping the boxes together. No tools are needed. Gradual curves are made by connecting the boxes at a slight angle, and for corners there are specific corner boxes.

The Boxwall can also be used during a flash flooding event to divert water away from vulnerable areas. A number of boxes are put in the flowing water and will stick directly to the ground.

The boxes are stackable, which means they require very little space for storage and transport. 26 boxes (16 m) fit on a standard pallet, and a 20’ container can take 357 m of Boxwall.

 

 

 

NOAQ Tubewall

Tubewall1

OVERVIEW

NOAQ Tubewall is a temporary flood barrier. It consists of a number of air inflated sections (”tubes”) that are interconnected by ordinary zips to form a continuous protective barrier.
 
Each tube is furnished with a skirt which lies on the ground on the flood side. When flood water enters the skirt, it is squeezed against the ground because of the water’s own weight. The friction against the ground is anchoring the skirt, and hereby the entire tubewall. The higher water levels, the better anchoring, and the tubewall remains stable even if the water should rise to its top.
 
The NOAQ Tubewall comes in three sizes: TW50, TW75 and TW100.
 

 

 

 

NOAQ Pressure Guard PG 01

PG01

OVERVIEW

The NOAQ Pressure Guard is an accesory to the NOAQ Tubewall. It makes it possible to connect the tubewall to a compressor or a compressed-air installation. The device includes a pressure reducing valve that maintains the air pressure in the tubewall within the recommended interval, close to 7 kPa (70 mbar or 1 psi). If an air leak should occur the pressure guard will immidiately restore the pressure.
 
The capacity of the pressure guard depends on that of the compressed-air system. With a sufficient compressed-air supply the maximum flow will be at least 0.8 m3/min. Still it is recommended that the ordinary handheld electrical blower is used for inflating the tubes, as it has a much higher capacity.
 

 

 

 

NOAQ Boxpool

Boxpool1

OVERVIEW

The NOAQ Boxpool is a temporary basin for storing liquids of different kinds. Clean water, contaminated water, firewater, dredged material etc. It can also be used for temporarily storage of dry matter like sawdust, wood chips and pellets.
 
A NOAQ Boxpool is assembled by the same components as the NOAQ Boxwall, our mobile flood barrier, which means the same device can be used for two quite different purposes.
 
The individual ”boxes” are easily snapped together, and by letting the barrier form a closed figure a basin is created. The basin is then covered by a liner. The components are small enough to be transported in a normal car.
 
There are two different boxes; straight ones and corners. The corner boxes are 30°, which means 12 pieces can be used to build a circular boxpool, containing a little more than 1 m³. By cutting the circle in two, and inserting 26 straight boxes, an elongated boxpool of some 8 m³ is created, and by adding further 44 boxes you get a boxpool containing no less than 38 m³. Deployed on a road it is still narrow enough to allow one lane to be kept open for traffic. Other desired dimensions are possible due to the flexible construction of the device.
 
Boxpool2   Boxpool3
 

 

 

 

NOAQ Gablewall

Gablewall1

OVERVIEW

The NOAQ Gablewall is primarily a complement to the NOAQ Boxwall, and is then only called ”Gable”. A couple of Gables, connected side-to-side, makes it possible for a Boxwall to pass a kerbstone.
 
Gables can also be used for adjusting the length of a Boxwall. The Boxwall is then split in two and a couple of Gables is inserted inbetween. A third application to increase the flexibility of the Boxwall system is to use a Gable to support the end of a Boxwall when a such need to be connected perpendicularly to a permanent wall or a façade.
 
But a NOAQ Gabewall can also be used on its own, to hold back flood water. You then put a number of coupled Gables in a row, and let them overlap a little. Such a Gablewall may be used for making very short flood barriers, for example when you need to block the water from enetring a narrow alley or an entrance.
 
Gablewall2   Gablewall3