API 650 Wind Moment
API 650 Wind Moment
(OP)
Hi,
I am trying to calculate the wind moment applied on vertical tanks based on API 650.
Per API 650 sec 5.2.1.k ([18 lbf/ft2][V/120]2) on vertical projected areas of cylindrical surfaces and ([30 lbf/ft2][V/120]2) uplift on horizontal projected areas of conical or doubly curved surfaces.
Any suggestions on how to calculate the Moment once the wind pressure is determined?
Thanks in advance!
I am trying to calculate the wind moment applied on vertical tanks based on API 650.
Per API 650 sec 5.2.1.k ([18 lbf/ft2][V/120]2) on vertical projected areas of cylindrical surfaces and ([30 lbf/ft2][V/120]2) uplift on horizontal projected areas of conical or doubly curved surfaces.
Any suggestions on how to calculate the Moment once the wind pressure is determined?
Thanks in advance!





RE: API 650 Wind Moment
RE: API 650 Wind Moment
The wind pressures calculated are used on the projected areas of the tank to calculate the moments.
RE: API 650 Wind Moment
2)Vertical Wind force on the conical surface = Fr =Pi()/4* D^2 X PWR.
3)Overturning moment about the shell-to-bottom joint from horizontal + vertical wind pressure Mw= Fs*H/2+Fr*D/2
RE: API 650 Wind Moment
Thanks!
RE: API 650 Wind Moment
PWR = Pressure of Wind on the Roof