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#26500 - 04/07/09 01:11 PM API 650 5.11 - Anchored Tanks
Ricardo Uemura Offline
Member

Registered: 04/01/09
Posts: 1
Loc: São Paulo, Brazil
Hi, I'm using TANK 3.1 build 080929 and I have a doubt.
How does TANK calculate Mw value?

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#26509 - 04/07/09 07:47 PM Re: API 650 5.11 - Anchored Tanks [Re: Ricardo Uemura]
Richard Ay Offline
Member

Registered: 12/13/99
Posts: 6226
Loc: Houston, Texas, USA
Code:
 

Mw =  ( 18. * Vfactor * Diameter * Height * Height / 2) +
      ( WIND_UPLIFT * Roof_AREA * Diameter / 2. )


Note, there is a limit on the veritcal wind pressure (uplift), see paragraph 5.2.1.k.2.
_________________________
Regards,
Richard Ay - Consultant

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