tower consultant, PE

[Mike O'Dell]

Hi there,

wow - 150MPH is pretty amazing, although with enough guys it's not 
patently impossible.

i'd talk to the US Tower folks. their heavy-duty towers are pretty burly 
and i suspect a lot
of the loading issues could be addressed with an oversize base. they 
have PEs that do their
installation stuff so that might be useful to go that way - they might 
be able to do you
a custom package.

it's been a while since i looked at their numbers, but i seem to 
remember their 50-55 foot
heavy-duty nests to circa 20 feet. with an oversize base, or guys on the 
bottom section, or both,
getting it to withstand 150MPH *nested* is probably not all that hard 
(relatively speaking).
with deep enough anchors on long-enough guys, getting the tower to do 
150MPH extended
is probably not impossible, but whether the antenna would stay in one 
piece is another
matter entirely. and at some point, the soil stability starts becoming 
the driving factor.

as in most things, "possible is measured in dollars".

sorry i can't suggest anything more "concrete" (ouch!)

     -mo


On 10/29/13 12:01 PM, Richard Cramer wrote:
> MO,
>
> Do you know a PE's down here in , Southwest FL(or maybe anywhere) that 
> can help me certify a tower for 150mph wind loads?.
>
> Called Building and Code department here in Manatee county and that is 
> the number they gave me.  I do not know of any ham towers that could 
> me that spec.  I am considering using a MA-550 that nest at 22' and a 
> standard steel 55" crankup that also nests at 22' ( it was made by the 
> company that MFJ bought out years ago).
>
> I was going to send this to you directly but then thought maybe 
> someone else my have a handle on a PE that could help.
>
> BTW how are you doing...it has been a while since we have had a taco 
> together.  Hope everything is going well with you and the rest of the 
> guys.
>
> Regards,
> Dick  KY2E
>
>