A-A storage tank for concentrated nitric acid will be constructed from aluminum to resist corrosion. The tank is to have an inside diameter of 8 m and a height of 25m. The maximum liquid level in the tank will be at 20 m. Estimate the plate thickness required at the base of the tank. Take the allowable design stress for aluminum as 90 N/mm2. density of liquid = 1520 kg/m', Take joint factor, J= 0.7 a safe value. %3D

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