Re: [TowerTalk] Concrete Pad for U.S. Tower TX-472

[Patrick Greenlee <patrick_g@windstream.net>]

Standard cement products cure to 90% of their final strength in 28 
days.  Large chunks get hot from the inside out as the curing process is 
an exothermic (heat producing) chemical reaction.
Patrick   NJ5G

On 7/25/2015 4:03 AM, J. Hunt via TowerTalk wrote:
> Please do not do any tower raising until after 30 days, possibly longer due to 
> 16 cubic yard mass.
> It is not worth fracturing the concrete.
>
> The George sun radiant energy only goes a few inches below the surface.
>
> Spend the next 30 days burying the hardline.
>
> Thanks N 73,
> James
> ki5dq
>
> --------------------------------------------
> On Fri, 7/24/15, Chris Wynn via TowerTalk <towertalk@contesting.com> wrote:
>
>   Subject: [TowerTalk] Concrete Pad for U.S. Tower TX-472
>   To: "towertalk@contesting.com" <towertalk@contesting.com>
>   Date: Friday, July 24, 2015, 10:25 PM
>   
>   I am in the process of putting up a TX-472.  So far, I have been relatively lucky and things have gone pretty smoothly.  I dug the hole using an excavator and "slightly" over dug it by a few feet.  From my initial calculations, I should have needed just under 8
>   cubic yards, but ended up pouring 16 cubic yards (32 tons and $2k more)!
>   So far the concrete has sat for 7 days curing in the Georgia sun.  I have 
> been pretty cautious to keep water on it, and
>   covered pretty well.
>   I know that the specs call for that concrete to cure for 28 days.  However, 
> how early can I raise this tower?  Does anyone have any experience with 
> cheating the 28 day curing period?  I was kind of hoping to raise it at the 21 
> day point.
>   I guess the last real job is to trench from the tower back to the shack.  
> Therefore, I plan on spending the next couple of weeks burying hardline.....
>   Thanks y'all and see you in the pile ups!
>   73's es CUL,
>   ChrisN4XFA
>   
>   Christopher L. Wynn
>   Attorney-at-Law
>   Christopher L. Wynn, ESQ., P.C.
>   6716 Church Street, Suite B
>   Douglasville, Ga., 30134
>   (770)942-8661 (Landline)
>   (770)577-1626
>   chris@chriswynnlaw.com
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