[Equest-users] U-factor for existing masonry wall

[Morteza Kasmai]

Helow all,

In this LEED-CS project, the existing masonry wall was changed to the
following configuration (from outside to inside):

 - glass-fiber-reinforced concrete panels [TAKTL] on galvanized steel
furring channels

- existing 8" masonry wall

- 3" polyisocyanurate insulation (R-18)

- 1/2" air space

- 3-5/8" metal studs without thermal insulation

- 5/8" gypsum wall board

Per ASHRAE 1.4 Tables “Opaque Building Envelope Constructions” requirnment,
proposed construction assembly U-factor should be as-designed and
consistent with Appendix A of ASHRAE 90.1. I cant fined any table in
Appendix A to match this configuration. How should I select the U-factor
for this wall?

Thank you so much for your help,

Morteza
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20130823/bb349651/attachment-0001.htm>