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.: <br /> � EXTERIOR ENVELOPE AVERAGE "U" COMPUTATION <br /> OWNER: ✓lGKEiZMq�/ DATE• �-�V -� <br /> SITE ADDRESS: ,2(o8S RA-/�`� Ro,4.� - ��.a�lo�� /✓!�0 � <br /> CONTRACTOR: TNani.�S t�F_.v l�rry,E'T,� /n/� PHONE: �79 • 6 7 7 7 <br /> � Determine working square footage of each: <br /> � <br /> 1. Total exposed wall area. . ���.� sq. ft. x .il = �22 <br /> 2. Total roof/ceiling area. . 2R�6 sq. ft. x .026 = 78 <br /> Total exposed wall area above floor = �f(,oq <br /> a. Total wall window area. . . . . . . . . . . . . . . . . . . . . . . �a83 <br /> b. Total door area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iNG�� <br /> c. Total sliding glass door area. . . . . . . . . . . . . . . . . i�vc�o�ro <br /> d. Total wall framing area (average 10�) . . . . . . . . . 32g <br /> �e. Total net wall area above floor. . . . . . . . . . . . . . . Z�S� <br /> f. Total rim joist area. . . . . . . . . . . . . . . . . . . . . . Z�f2 <br /> Total exposed foundation area = �I3� • <br /> g. Total foundation window area. . . . . . . . . . . . . . . . .—� <br /> h. Total net foundation area above grade. . . . . . . . . i3S <br /> Determine "U" value of each wall segment: <br /> a. /083 X °U�� . 2S = 27d .�S <br /> b. - X ��U�� _ _ _ <br /> c. - X ��U�� _ _ - <br /> d. • 328' X „U�� , / = 32• 8 <br /> e. 2�iS� X �,U�, . oS = /�t7. 8 <br /> f. 2Y2 x "U" , o� = q. � <br /> g, ._ X ,�U�� _ - _ <br /> h. !38' x ��U�� , o? = 9 • 7 <br /> 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Total = �f7o• 7S <br /> I� item #3 is less than or equal to item #1, than the have met the <br /> intent of SBC 6006(c)2 . <br /> Total exposed roof/ceiling area = 2`�R� <br /> i. Total roof/ceiling framing area (average 10�) . 300 <br /> j . Total new insulated roof/ceiling area. . . . . . . . . 2��'i (o <br /> Determine "U" value of each roof/ceiling segment: <br /> i. 3Qo x "U" .oz.. _ (o <br /> j • 2�o�'il.� x "U" • oZ = S3 .�2 <br /> 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Total = .�'g•�i2 <br /> If total of #4 is less than or equal to #2, than you have met the <br /> intent of SBC 6006(c) 1. <br /> Alternate Building Envelope Design <br /> To utilize the total envelope system method, the values established <br /> by the sum of items #3 and #4 shall not be greater than the sum of <br /> items #1 and #2 : <br /> 1. 52Z + 2. ?S = <br /> 3. �70 . 7 S + 4. $��l•`�?� _ <br />