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EXTERIOR ENVELOPE AVERAGE "-U" COMPUTATION <br /> OWNER: L. 2sQ Jamnnrr : /0-/B-93 <br /> SITE ADDRESS: -7 j 5 OJZL -4QD PSK 1Ze) • PHONE: <br /> CONTRACTOR: I JC Oe„nAIS-, PLAN # <br /> Determine working square footage of each <br /> 1. Total exposed wall area 3z4 4 sq. ft. x .11 = 3400 <br /> 2. Total roof/ceiling area 278-5 sq. ft. x .026 = 72- <br /> Total <br /> ZTotal exposed wall area above .floor=_ <br /> a. Total wall window area 7 B 3 <br /> b. Total door area • <br /> 92 <br /> c. Total sliding glass door area <br /> d. Total fireplace wall area _ -- <br /> e. Total wall framing area (average 10%) 1;7.1,a, <br /> f. Total rim joist area 7,108 <br /> g. net wall area above floor Zg39.4- <br /> h. wall area above floor <br /> i . wall area above floor <br /> j. frame wall area at foundation <br /> Total exposed foundation area= /3 o <br /> k. Total foundation window area <br /> 1 . Total net foundation area above grade /3o <br /> Determine "u" value of each wall segment <br /> (e.g. window, door, each separate wail section) <br /> a. ZS X "0" .3L = giv.S <br /> b. 92 X "U" .31 = Zt5. <br /> C. x 11u,, = <br /> • d. X "U" = <br /> e. 3zU.4 X "U" . 0/ = 30 <br /> f. 2(e5 X "U" . o 4' = /of? <br /> g. 2434.4- x "u" . 04- = /17.5 <br /> h. X "U" <br /> i • X 11 U 11 = <br /> j. x 11U11 = <br /> If item #3 is the sarr <br /> k. X "U" = as , or less than item <br /> #1 , you have met the <br /> 1 . - 3o X "U" . i 4 = /8. Z- intent of SBC 6006 (c <br /> 3. Total = <br />