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Re: [Shop-talk] Mythbusters sucks! [rant]

To: Randall <>
Subject: Re: [Shop-talk] Mythbusters sucks! [rant]
From: "Peter J. Thomas" <>
Date: Wed, 27 Jan 2010 16:52:58 -0500
On 1/27/2010 4:38 PM, Randall wrote:
>> Concaved also distributes forces, outward toward the rim.
> Yes, but the rim is the weak spot.  Note on the Mythbusters video how the
> end plate is intact, but separated at the corner between it and the walls.
> The best shape for a pressure vessel is a sphere.
Agreed, but a water heater isn't supposed to pressurized to failure, 
just moderate pressure.  Enough pressure that a flat bottom would deform 
and pull away from the sidewalls.  So making the bottom concaved, like 
an aerosol can, means it will hold its general shape and stand, under 
designed pressure.

Peter T.
> -- Randall
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