[TheForge] Shop Air using Copper

[Peter Hirst]

I'd be careful of putting any plumbing directly in the crushed stone.  The 
same expansion/contraction that breaks up concrete causes abrasion in 
crushed stone.   Nothing but sand or loamy sand around here, so i wouldn't 
know what to tell you to cushion it with.  Run it inside black plastic water 
line probably.


----- Original Message ----- 
From: <sos at frii.com>
To: "Blacksmithing List Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Tuesday, January 13, 2009 8:53 PM
Subject: Re: [TheForge] Shop Air using Copper


> Thanks Frosty, good point.
> I'm not sure if it applies or not--the plumbing will be buried in the
> crushed stone that goes under the concrete slab, not actually in the slab.
> This leaves the question of how stuff gets from under to above; yet to be
> discussed.
>
> Thanks for adding the part about hydronic heat, we are using that (in the
> house, not the shop). One more thing to keep an eye on the hvac guy.
>
> Steve
>
>> Put about 100psi air in the PEX when you pour the
>> concrete so there's a little space or it'll break the
>> concrete up over time with the rising and falling
>> pressure. This is especially true for hydronic heat
>> using PEX or Wisbo in concrete.
>>
>> Frosty
>> -------------------------------
>> If it ain't forged
>> it ain't real.
>> Wrought iron is.
>> The FrostWorks
>>
>> Meadow Lakes, AK.
>>
>>
>> From: <sos at frii.com>
>>
>>
>>>I hear that people are using PEX type flexible
>>>plumbing for routing air.
>>> Soft plastic hose is obviously a bad choice for
>>> exposed connections; I'm
>>> thinking of using it to plumb the shop I'm building.
>>> Any thoughts on using
>>> PEX with a hard cover (like concrete)?
>>>
>>> Steve
>>>
>>
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