Drag coefficient of a flag pole
Drag coefficient of a flag pole
(OP)
Hi,
I came across this link for the drag force.
http://en.m.wikipedia.org/wiki/Drag_coefficient
Which one of these is applicable for a flag pole?
It's a taper pole dia 5in to 3in 15 ft tall.
Thanks
C1
I came across this link for the drag force.
http://en.m.wikipedia.org/wiki/Drag_coefficient
Which one of these is applicable for a flag pole?
It's a taper pole dia 5in to 3in 15 ft tall.
Thanks
C1






RE: Drag coefficient of a flag pole
Go to this link
http://www.acmelingo.com/flagpoles/FP1001-07.pdf
The NAAMM flagpole spec was updated to be consistent with AASHTO regarding drag coefficients, based on wind speed.
RE: Drag coefficient of a flag pole
But I am unable to apply this to accessories. So I need refer to the kind of chart I posted originally(wiki chart)
So my question is still open. The wiki link in my original post shows drag coefficient values. How do I appy this chart on accessories.
1. Say I have a pair of speakers fixed on extended arms.
Arms are steel 3 x 3 sq tubes 1 ft long.
Speakers are cylindrical. Dia 6 x 2 ft. Cylinders run parallel to pole.
2. There are 2 planter baskets. I guess they are shaped half sphere. Dia 2 ft . On 3 ft extended arm.
In the wiki chart, I am able see there is a semi sphere shape that I can refer for the planter basket. But I don't know which shape to refer for speakers. The cylindrical shapes are confusing on the chart?
Are the views Top views OR side views ?
RE: Drag coefficient of a flag pole
http://www.ce.udel.edu/courses/CIEG407/CIEG_407_Pr...
I'd use the nonstructural wind loading calcs (qz) and treat it as an additional point load/moment at the point of attachment.
RE: Drag coefficient of a flag pole