[TowerTalk] Hole Digging Question

[Alan C. Zack]

US Towers only rates their towers to UBC-97 specs at 70 MPH.  Many 
states/county/city Bldg Depts now require IBC-2000 90 MPH wind calcs. 
  I tried for 5 months to get 90 MPH wind calcs out of US Towers to 
satisfy my Bldg Dept and after going back and forth with their 
out-sourced PE I was told their towers cannot be rated under IBC-2000 
specs.  My suggestion is to check with your Bldg Dept for their 
requirements BEFORE ordering a tower.

Les Kalmus wrote:

> My 89 ft tower needs a 5x5x8 hole per the US Tower drawing.
> 
> Les W2LK
> 
> -----Original Message-----
> From: towertalk-bounces at contesting.com
> [mailto:towertalk-bounces at contesting.com]On Behalf Of Alan C. Zack
> Sent: Thursday, July 22, 2004 4:47 PM
> To: hdmc38 at bellsouth.net
> Cc: towertalk at contesting.com; Pat Chiles
> Subject: Re: [TowerTalk] Hole Digging Question
> 
> 
> A 5' X 5' X 8' base sounds kinda small for a 72 ft tower.  What wind
> calcs are you using?  Did your Bldg Dept ask for wind calcs with your
> application?  Just asking to save you future problems.
> GL
> 
> hdmc38 at bellsouth.net wrote:
> 
>>It would be on my job Pat.
>>
>>                73 Joe K4XZ
>>
>>
>>>From: "Pat Chiles" <chilesp at adelphia.net>
>>>Date: 2004/07/22 Thu AM 10:26:52 EDT
>>>To: <towertalk at contesting.com>
>>>Subject: [TowerTalk] Hole Digging Question
>>>
>>>I will be starting a tower project in about a month.  It will be a 72 FT
> 
> crank-up and the specs call for a foundation that is 5ftx5ftx8ft.  Is it
> reasonable to expect a back-hoe operator to be able to dig this size whole
> without elongating it beyond 5ftx5ft?
> 
>>>Pat, K8PC
> 
> 
>>
>>JOE PATRICK
>>SENIOR PLUMBING/MECHANICAL
>>INSPECTOR CITY OF BOYNTON BEACH

-- 
__________________________________________________________________________ 

Alan Zack
Amateur Radio Station K7ACZ
Las Vegas, Nevada, USA
Quality Engineer, The Boeing Company, Retired
Aviation Chief Warrant Officer, U.S. Coast Guard, Retired
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