[TowerTalk] deep base for MA-550

[Jim White, K4OJ]

NOT A CYLINDER - NO DIAMETERS ARE INVOLVED HERE!

IT IS A SQUARe CORNERED HOLE!!!!!

Like K3BZ said...

(or simply a cubic yard is - you guessed it a yard by a yard by a yard - 
AKA 3 ft X 3 ft X 3 ft --OR-- 27 cubic ft)

- SO -

Multiply H X W X D in feet (height width depth) and compare that number 
to 27 to get the number of cubic yards...

EX:

A hole 3 ft by 3 ft by 4.5 foot deep is:

40 point 5 cubic feet...

40.5 cf divided by 27 cf = one and a half cubic yards AKA 1.5 CY

Don't forget to put some juicy DX QSL cards at the bottoms of those 
holes for good luck!

73,

Jim, K4OJ



FireBrick wrote:

> 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 at arrl.net>
> To: <gdaught6 at stanford.edu>; <towertalk at contesting.com>; "Jim Rhodes"
> <k0xu at 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 at stanford.edu ; towertalk at 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 at 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
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> 
>   Jim Rhodes K0XU
>   jim at 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 at 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
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> 
> 
> 
> _______________________________________________
> 
> 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.
> 
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