Beaver inflatable tube mobile flood barrier test against flash flood water & diversion with sandbags. The twin tubes are inflated with air, placed into position and then filled with water.
The weight of the water in the tubes is the creation of the wall to hold back the flood water.
The beaver MXL 80, which holds back water up to 800mm high, twin tube, weights 12,000 kg per 10 metres when filled with water. When empty, it weights just 70kg so can be easily and quickly deployed.
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