[TowerTalk] US TOWER HDX-89 / Tash DX86 Wind Rating Differences

[Patrick]

Did you check to see if both wind ratings were made from the same 
standard?  Their has been lots of changes in recent years causing lots 
of confusion, especially when the MFG doesn't say what standard was used.

Patrick        NJ5G


On 6/10/2017 9:00 AM, Richard Thorne wrote:
> This may not be comparing apples to apples but here's my question 
> after studying the two towers.
>
> US Tower HDX-89 claims 9.2 sq ft of max allowable antenna wind area 90 
> mph 3 second gust
> Tash DX86  claims 21 sq ft of max allowable antenna wind area 85 mph 3 
> sec gust
>
> After looking at both designs they both start with a lower section 
> that is 28.75" wide and a top section that is 13 7/8" (Tash) and 13 
> 15/16" (US Tower)
>
> So the designs appear to be the same, why are the allow able antenna 
> wind loads so different?  I realize that one is based on 90 mph the 
> other on 85 mph.  Does the 5 mph delta add up to a 11.8 sq ft difference?
>
> Thanks in advance.
>
> Rich - N5ZC
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
> ---
> This email has been checked for viruses by AVG.
> http://www.avg.com
>
>