All,

I have a Nitric acid tank (Pi = 2.5 PSI) with 27 feet dia, 27 feet high with doom roof. I am using Tank software and filling out the spec for the Doom roof. I found the angle - 25 deg. I need help to get the Net area @ Roof/Shell Junction (A).

I am confused with DLR values.

Is there any better way OR formula to calculate A?
Please let me know.

I appreciate your time.

Mayur