Bill:
I recall from last Autumn that not only is the requirement for #9 rebar, but
it is for TWO such elements in each corner of the foundation. I do believe
that the spec is set up for earthquake locations. Here in Idaho, on the
Snake River Plain, it turns out that proximity to Yellowstone Park [100
miles] meant that I was in an Earthquake zone. We get lots of very little
tremors apparently and the dome in the center of the Yellowstone Caldera is
rising a couple of inches each year.
In any event, the #9 was available locally -- presumably because everyone
needs specially reinforced foundations. The people who installed the rebar
and poured the concrete were more frustrated by trying to bend #4 at right
angles without a special bending assembly [which they eventually did go off
and arrange] than by the locating and handling of the #9.
Tod, K0TO
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com] On Behalf Of Bill NY9H
> Sent: Monday, May 24, 2010 8:41 AM
> To: towertalk@contesting.com
> Subject: [TowerTalk] re installing my hdxmdpl72 question on rebar
>
> planning the rebar cage for the 72 footer,,,so I
> downloaded from UST the california engineering drawing.
>
> Went to acquire the rebar,,, the spec calls for some # 4(1/2 )
> ok & qty 8 # 9 (1 1/4") wow.....
> Nowhere can I find stuff that big.... the contactor supplier
> suggested that might be because of CA earthquakes,,,,&@$#@ ....
>
> While I'm trying to follow the factory spec ,,,,is that way
> overkill....???
> I plan on calling UST when CA awakes.
>
> bill / 3
>
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