Old post same problems am trying to tackle today and need some advice. Thinking of doing an underground water tank with a concrete roof that should be able hold a water tower with one tank about 20ft high of capacity btw 5k -10k liters.
Thinking a tank size of 5mx4mx3M approx 60,000liters, might be cheaper than having two 10k roto tanks. How much would it cost using a) stone b) concrete c) any other construction method. One advice for the tower is to use black pipe 4"
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