[TheForge] flues

[David E. Smucker]

I 2nd Ron comment about using a section of culvert.  A 20 ft length is not 
too expensive and most are about 16 gauge with stiffening added by the 
corrugation.  My stack is a 20 ft length of 15 inch culvert with a shot gun 
top.  I have a large hood, not a side draft and it pulls very well.  One 
area that a lot of smiths loose draft is by what they place at the top of 
the stack.  Depending on design the rain hood, can cut the stack draft in 
half.

Dave Smucker
----- Original Message ----- 
From: "Ron Childers" <munlaw2 at hcsmail.com>
To: <GHS at execpc.com>; "'Sponsored by ABANA'" <theforge at mailman.qth.net>
Sent: Thursday, January 17, 2008 12:24 PM
Subject: RE: [TheForge] flues


>A steel culvert seems to work well.... Ron C
>
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of GRAF
> Sent: Thursday, January 17, 2008 11:53 AM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] flues
>
> For 12 inch the MINIMUM I'd use is 24 gauge. Heavier if you can manage
> it. Above 8 inch the size of the pipe makes it unstable dimensionally in
> the lighter gauges. When you are up in the wind having things collapse
> above a brace because it didn't stay round would not be a good thing.
> Mike Graf
>
>
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