You may be right for a cylinder....but he said 2.5 x 2.5 x 5.... that's not a
cylinder. Still, the calcs (1.157 vs 1.25) are not that much different. :-)
Jerry K3BZ
----- Original Message -----
From: FireBrick
To: Jerry Keller ; gdaught6@stanford.edu ; towertalk@contesting.com ; Jim
Rhodes
Sent: Saturday, October 04, 2003 9:01 PM
Subject: Re: [TowerTalk] deep base for MA-550
I can't do that fancy math.
But as a retired mason contractor...I can use a concrete calculating slide
rule.
(The redimix outfits used to hand them out free and you may ask your
supplier, they may give you one)
But...
having said that,
My calculator says that a 2"6" diameter pier, 5' deep would be 1 1/4 yards.
(we used to figure, 6 wheelbarrows to a yard for how much pushing would be
required)
----- Original Message -----
From: "Jerry Keller" <k3bz@arrl.net>
To: <gdaught6@stanford.edu>; <towertalk@contesting.com>; "Jim Rhodes"
<k0xu@iowadsl.net>
Sent: Saturday, October 04, 2003 7:40 PM
Subject: Re: [TowerTalk] deep base for MA-550
There are 27 cu ft in 1 cu yd (3 ft x 3 ft x 3 ft)...so 2.5 ft x 2.5 ft x
5.0 ft = 31.25 cu ft... divided by 27 cu ft = 1.157 cu yd. Jerry K3BZ
----- Original Message -----
From: Jim Rhodes
To: gdaught6@stanford.edu ; towertalk@contesting.com
Sent: Saturday, October 04, 2003 8:19 PM
Subject: Re: [TowerTalk] deep base for MA-550
Hold on here. Isn't the formula pi*r^2*h=v? My calc says about 78.5 cu ft
or 2.9 cu yds.
Oh, I'm sorry. I just noticed the @stanford.edu.
At 05:18 PM 10/4/03, gdaught6@stanford.edu wrote:
>On 4 Oct 2003 at 11:47, David Giuliani wrote:
>
> > I'm installing a concrete base for a Universal Towers MA-550. The
> > mfg's dwg calls for a base 2.5' x 2.5' x 5' deep in undisturbed soil,
> > using 2.5 cubic yards.
>
>I calculate under 1.25 cubic yards for that hole. You're going to
>have a LOT of concrete left over. 3' x 3' x 6' is two yards.
>
>73,
>
>
>
>
>_______________________________________________
>
>See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
>Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with
>any questions and ask for Sherman, W2FLA.
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk@contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
Jim Rhodes K0XU
jim@rhodesend.net
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any
questions and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|