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<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>I
am modeling a slab-on-grade floor using the methods described under the help
for the U-EFF. This is the described in the Volume 3: Topics/ Envelope
Components / Underground Wall eQuest 3.61e help files. A sample
calculation is presented for the 100 ft x 50 ft slab-on-grade floor. The sample
input is given as follows;<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>LAY-SLAB-1
= LAYERS<br>
MATERIAL
= ("Soil 12in","Conc HW 140lb 4in (CC03)")<br>
INSIDE-FILM-RES = 0.77 ..<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>CON-SLAB-1
= CONSTRUCTION<br>
TYPE
= LAYERS<br>
LAYERS
= LAY-SLAB-1 ..<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>SLAB-1
= UNDERGROUND-FLOOR<br>
HEIGHT
= 50<br>
WIDTH
= 100<br>
TILT
= 180<br>
PERIM-EXPOSED = 300<br>
PERIM-CONDCUT = 0.50<br>
CONSTRUCTION =
CON-SLAB-1 ..<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>eQuest
3.61e does not appear to accept the PERIM-CONDUCT and PERIM-EXPOSED keywords
as input. Instead it uses the keyword U-EFF.<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>In
Vol 23, No.6 of the Building Energy Simulation User News for DOE2.1E, slab-on-grade
calculations were presented using the following;<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>Reff
= A/(F2 x Pexp) where Reff = Reffective, A = area of slab (ft), F2 = perimeter
conduction factor, and Pexp = exposed perimeter length (ft).<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>So,
is U-EFF required in eQuest 3.61e calculated as U-EFF = 1/Reff = (F2 x Pexp)/Area
using F2 factors from Table 9?<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>Or,
is there a way that I should be entering PERIM-EXPOSED and PERIM-CONDUCT for
each floor?<o:p></o:p></span></p>
<p class=doe-2input><span style='font-size:11.0pt;font-family:"Courier New"'>Thanks
in advance for any help clearing this up for me.<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>Brett Fero, P.E., LEED AP<o:p></o:p></span></b></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>RobsonWoese, Inc.<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>5824 Widewaters Parkway<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>East Syracuse, NY 13057<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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