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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This would typically be a wall (or it could be a floor or roof) that has 2” by 6” wood studs (or members) that are spaced at 24” on center. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>A wall like this would typically have R-19 fiberglass batt insulation in the wall cavity space between the 2 X 6 wood studs.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><i><span style='font-size:24.0pt;font-family:"Bradley Hand ITC";color:blue'>David A. Bastow </span></i></b><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><b><i><span style='font-family:"Rockwell Extra Bold","serif";color:#1F497D'>McClure Engineering, Inc. </span></i></b><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> xiaoyang shi [mailto:xs2144@gmail.com] <br><b>Sent:</b> Monday, May 09, 2011 3:27 PM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] question about R value<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi folks,<br><br>What is the meaning "o.c." in "Wood Frame,2*6, 24 in o.c."<br><br>Thank you.<br><br><br><br><o:p></o:p></p></div></body></html>