<div dir="ltr"><div><p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">Helow all,</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><font color="#274e13"><span style="font-family:Arial,sans-serif">In this LEED-CS project,
the existing masonry wall was changed to the following configuration (from
outside to inside):</span><br></font></p>

<p class="" style="margin-bottom:0.0001pt"><font color="#274e13"><span style="font-family:Arial,sans-serif"> </span><span style="font-family:Arial,sans-serif">- glass-fiber-reinforced
concrete panels [TAKTL] on galvanized steel furring channels</span></font></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">- existing 8"
masonry wall</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">- 3" polyisocyanurate
insulation (R-18)</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">- 1/2" air space</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">- 3-5/8" metal
studs without thermal insulation</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">- 5/8" gypsum wall
board</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">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?</font></span></p>

<p class="" style="margin-bottom:0.0001pt"><font color="#274e13"><span style="font-family:Arial,sans-serif">Thank you so much for
your help,</span><br></font></p>

<p class="" style="margin-bottom:0.0001pt"><span style="font-family:Arial,sans-serif"><font color="#274e13">Morteza</font></span></p></div><div><br></div><br clear="all"><div><div dir="ltr"><img src="https://lh6.googleusercontent.com/Uuukta80GuFfvKouzA0mdSvUXqml7MtSwSiw-evuGMU=w147-h43-p-no"><br>
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