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<font face="Times New Roman, Times, serif">That doesn't sound right.
Poured</font> concrete has an R-value around 0.08/inch. When
"effective" is used commercially it normally is a hocus pocus addition
for the mass effect but shouldn't be much more than 10%. eQuest would
calculate it as a lag effect based on the mass, so a steady state value
would be most appropriate.<br>
Bruce Easterbrook<br>
<br>
On 22/04/2010 10:38 AM, Rob Hudson wrote:
<blockquote
cite="mid:o2kda82cf031004220738h8bef08aai1a0c294c95ce1e37@mail.gmail.com"
type="cite">When creating a model, i noticed that the R-value of the
concrete i am using is the "effective" R-value, rated at 22. Should i
use this or should i ask the concrete manufacturer for a steady-state
R-value which will be much more accurate based on the materials?<br
clear="all">
<br>
-- <br>
Rob Hudson<br>
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