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A 12 ft. high soil stack made of 4-in. PVC is full of water due to a blockage. How much water will flow out when the cleanout is opened at the base of the stack?

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A 12 ft. high soil stack made of 4-in. PVC is full of water due to a blockage. How much water will flow out when the cleanout is opened at the base of the stack?






 
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