Tony Ferguson on tue 1 oct 02
Anyone who would like to see Tony Winchester pictures from pottery workshop
click on link below:
On Lake Superior, where the sky meets the Lake
Stoneware, Porcelain, Raku
315 N. Lake Ave
Duluth, MN 55806
----- Original Message -----
From: "Lloyd Cledwyn"
Sent: Tuesday, October 01, 2002 2:17 PM
Subject: Re: volume of a catenary arch
> I was wondering that myself having just helped build a kiln and this
> allowed my math major side to get the better of me.
> Short answer care of Ward Burner website
> CF = L x Arch area (4/3 H x 1/2 Base Width)
> a 6 foot deep kiln, 5 feet high and 4 feet at the base is 6*6.66*2 =
> 80cubic feet!
> Long answer, you will have to take the integral of the curve of the
> cantenary arch, which is not a simple parabola as I originally thought.
> The equation is a*cosH(a/t). I worked for a while with my rusty
> trigonometry and gave up. L x 4/3H x 1/2B looks like a great
> for me.
> --On Monday, September 30, 2002 8:15 PM -0700 Eric Suchman
> > Does any one know of a formula for the volume of a catenary arch kiln?
> > Eric in Oceanside
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> Lloyd Cledwyn
> Saint Paul, MN
> Send postings to firstname.lastname@example.org
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