unanchored tank calculation -API 650 11th Edition

Your question is vague...

Are you interested in a seismic calculation or a "roof uplift" pressure evaluation or what...?

Can you be specific ?

Yes, "roof uplift" pressure evaluation as per API650 -11th edition Add.1 based Cl:5.11.2,

My Tank is 47m dia and 15m height, Design Pressure is 2.94KPa, Tank Content is Water,Design wind speed 160 Km/hr,Material ASTM A36(Sd-160MPa,St-171MPa)

I want to calculate....

At odd times in my life...I too often felt the aching need to calculate....

It is a lifelong deep-seated greatly unmet need.........I first felt it as a young boy of 8 or ten years as I grew up in rural New England.

In 1958, with my brother I saw the first Russian sattelite Sputnik race over my head on a clear June night.....I felt a deep need to calculate in my bones.

When I saw Neil Armstrong first walk on the moon in August of 1969.....

Like you, Wadeed......I yearned to calculate......to compute........to challenge and be better then my peers.

I went to the state Universtity on a scholarship with my need to calculate...

Then, I got married..... and I had this need beaten out of me by a selfish Irish-Italian shrew