2 numbers of R.C.Stacks with 120 mt height

1. The stacks are conical in shape, the diameter is 12 mt at the bottom and  6.92 mt on the top.
2. The total conical slipformed area is 13000 m2 and the concrete amount casted into slipform is 2000 m3, and total amount of   concrete is 6700 m3.
3. The inner surface of stacks, which is 6000 m2, has been insulated by acid and heat  resistant refractors.