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• <br /> Feb. 3, 2021 <br /> Re: correction letter <br /> Tom Hutchinson, <br /> I think there may be a communication issue with the reviewer. <br /> The code in section R502.1.1.1 Building envelope(exception)says"where non-conditioned <br /> space is changed to conditioned space,the building envelope of the addition shall comply <br /> where the UA, as determined in Section R402.1.4 of the existing building and the addition... is <br /> less than or equal to the UA generated for the existing building." <br /> I did 2 pairs of calculations on the 3`a,0,5th and 6th tab sof the workbook,and looks like he is <br /> only responding to the 4th tab.The "code target values" are not relevant,just the"proposed <br /> design" in each tab.This proposal is calculating the windows upgrade for the whole house <br /> which was done as part of the addition.We are comparing"proposed design"from the pre <br /> existing building to the "proposed design"for the new building. <br /> I tried to make it more clear here with the worksheets printed out in pair A.This option, <br /> counting the window upgrade from the original single pane windows as part of the remodel, is <br /> UA 527 existing and 468 new,which complies. <br /> Hope that clarifies it. <br /> Tom Balderston <br /> ��9 <br />