The PSF refers to Pounds per Square Foot. 20psf is the pressure exerted by a
70MPH wind. 30psf is just under the pressure exerted by a 90MPH wind (32.4psf).
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>>>Michael Pfeuffer said:
> Howdy all,
> I'm considering putting up a Rohn 25G fold-over tower that I picked up a
> few years ago. In looking at the engineering specs for the tower, they
> list antenna loads for two different values of "PSF" ( 20 and 30 ). I
> can't find PSF defined anywhere in my specs, and a google search resulted
> in a wide array of choices, but none seemed to apply. Any ideas?
> I'm looking at page FO-1 in the current book. The table is titled
> "Specifications for Rohn Fold-Over Towers", and hasn't changed since it was
> drawn in '83.
> --Mike, WQ5C
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