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It depends on the thickness and width of the footings and the thickness and height of the foundation walls.
157 pounds
It depends how thick you want it
It depends on the depth required
Concrete in the bulk is measured in cubic yards. Concrete on the ground is often measured by square yards, but the depth of the concrete must be known, too. The price per cubic yard varies a lot across the US, plus not knowing the thickness of the concrete means that your question cannot reasonably be answered.
how much does concrete cost per square foot
1,800 square meters or 19,375 square feet.
1800 x $18.00 = $32,400.
It depends on how thick you want the concrete.
It depends on the thickness and width of the footings and the thickness and height of the foundation walls.
1,800 square meters or 19,375 square feet.
Depends where you are living.
76010
157 pounds
It depends how thick you want it
Concrete is sold in cubic (volume) measurements not square (area) measurements.
there is not nearly enough information provided to answer your question. it isn't important that it is a tank or that it is a water tank. what is important is the thickness of the concrete, the shape it makes, the amount and location of reinforcing steel inside the concrete, the type of concrete, the foundation and the soil the foundation is on, how high in the air the top of this tank is (has repercussions for seismic areas), etc.