[Equest-users] Effective Insulation/Farming Layer R-Value Value

[Morteza Kasmai via Equest-users]

Nathan, Daniel, Nick and Chris,

Thank you all for your helpful recommendations and guidance.

Morteza




On Wed, Jul 19, 2017 at 7:43 PM, Chris Baker <CBaker at cci-alliance.com>
wrote:

> I agree with Daniel on this one.
>
>
>
> If you wanted to go above and beyond, you could check out Table A3.3 in
> the section A tables of 90.1 since it has effective overall U-factors and
> R-values for different construction types and insulation applications – to
> include steel framing @ 16 o.c. and 24 o.c.
>
>
>
> You can select from the insulation R-values for each construction type and
> from there you can get the overall U-factor for the entire wall assembly
> which might also come in handy for any detail edits you might need to make.
>
>
>
> There is also an R-value calculator online that will allow you to model
> each wall component and calculate the overall/composite R-value of the
> system.  It might just be interesting to compare it to the ASHRAE 90.1
> numbers in Section A tables or other values online.
>
>
>
> *Chris Baker*
>
> *CCI Alliance of Companies*
>
> *Fort Wainwright, Alaska*
>
> *907-356-1681 <(907)%20356-1681> (x105) office*
>
> *907-750-4922 <(907)%20750-4922> cell*
>
>
>
> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
> Behalf Of *Morteza Kasmai via Equest-users
> *Sent:* Wednesday, July 19, 2017 6:16 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Effective Insulation/Farming Layer R-Value Value
>
>
>
> There is a wall section in this project with 4” thick interior
> polyurethane spray foam inside the metal studs.
>
> Since Table A9.2B of ASHRAE 90.1 does not provide the effective
> insulation/framing layer R-Value for this type of insulation, how can one
> calculate this value?
>
> Your thoughts and suggestions would be highly appreciated,
> Morteza
>
>
>
>
>
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