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Imperméabilité

The challenge: building a water recovery system, waterproofing materials. The two families are given three attempts to accumulate as much water as possible in a boiler. The water falls from a tank which contains, each time, 2 liters of water. They cannot reuse the material provided more than once. The family which collects the most water in the total of its 3 trials, wins. A challenge that promises to wet more than one in 30 minutes.