1.2.2 in order to reduce the time it takes to make waterproof walls. From an old sack of sand bags must be packed individually and then put the bag into each layer until you get the height as desired. Who wants to take the time this process is not worth less than 3-5 hours or more (depending on the height and number of workers), but if you use sand bags, waterproof. It takes only less than 1 hr. Unable to install waterproof sand bags, available immediately.
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