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Plans - 3916 Mapleton Avenue - 12/6/2021EXTERIOR ENVELOPE AVERAGE 1 U" COMPUTATION 0 %VNER_ SITE ADDRESS CONTRACTOR �,.� DATE •? - PHONE L f Determine working square footage of each: 1. Total exposed wall' a'rea.--.-.--------- sq. ft. X . 17 = 2. Total roof/ceiling----------------- sq. ft. X . 05 = Q b 40 80 /:)00 Total exposed wall area above floor - (,14 a. Total wall window area----------------------------- 3 b. Total door, area ----------------------------------- ��IS c. Total sliding glass door area-----------------------�_3�v d. Total fireplace wall area --------------------------- e. Total wall.framing area (average 10%)--------------- �% 10 199U f. Total net wall area above floor ---------------------- g. Total rim joist area -------------------------------- Total exposed foundation area - h. Total foundation window area----------------------- �00 /D 3 i. Total net foundation area above grade--------------- O Determine "U" value of each wall segment. a. �5 X "U" b. ��,00 � J X "U" C. M,0 X ►luff qv d. jJerjk�� X fluff e. 1110 X flull X „U,l 1007 - wit 10 g,X ,full h. /D ✓ X 'full i. 9 Z © X "U" q 7 -, 2 Z,.S71�0I 3.-----------------------------------Total - 1 If item #3 is the same as, or less than item #1, you have met the intent of SBC 6006 (c) 2. ` Total exposed roof /ceiling area = c o o j. Total skylight area--------------------- - k. Total roof/ceiling framing area (avg. 10%) /00, db 1. Total net insulated roof/ceiling area----- Jno o, S' Determine "U" value for each roof/ceiling segment. j• {l� WWQ--- X IIUII k. to() X "UII 1. (o o o X „U, 4.-----------------------------Total If total of #4 is the same as, or less than #2, you have met the intent of SBC 6006(c)1 Alternate Building Envelope Design To utilize the total envelope system method, the values established by the sum of items #3 and #4 shall not be greater than the sum of items # 1 and #2. ' 1. 1112 +2. _ // 7,2 3. S& I (je I -1- 4• - s/ / 4/ / 10% ROOF/CEIL 4G: Construction R Value Vented Eezr floe up Figure.#5 1. Interior air film 0.61 2. / 11 S 45, 3. 1211 1NS, r-1� ., 4. Exterior air film (still) 0.61 Total .~• `,�� V ✓' FULL CEILING: ',�t/�_�s,�•c,svc< erior air film 2. 1 67 3 ¢ Vented Heat. flow up Figure #5 30 }�caL Gov up -17 0.61 4. Exterior air film (still) 0.61 Total MODIFIED ROOF/CEILING : 1. Inside air film -A. 2. ? 3. 0.61 4. 5. Outside air film 0.17 Total Note: Use additional sheets if more space needed for details and calculations. --aC_. Cl •1 G_ . 7,p�1yn --- t,'nLL FF•2'-i 10°jo WALL: 1. Interior air trim 0.68 2. 315 rldbmL-1 //.DD 3. Inches soft wood 4. ' 5 . "f , 6. Exterior air film 0.17 Total / n, u - , 06) raj FULL WALL: 1. Interior air film 0.68 2. 3. 4. 16 5. Sl �D/ ( LAP �� 6. Exterior air'film 0.17 Total .v- " RIM JOIST: 1. Interior air film 0.68 --' 6. 6.17 Exterior air film o Total 1 1 SUB LEVEL WALL: 1. Interior air film 0.68 4� _ �' -- �_` 2. 3. L-- - 4. 5. 6. Exterior air film 0. 17 SLAB ON GRADE - OPTION 4-7 Total 2/ 16 AL v r 6 _i- - • 111 - - i!f -- _ CF ?:O''E: Inc]icate type, -a- -value, dcpt}' Tr►a p?zcercnt of insulation- FRAME WALL WINDOWS No. Number Sq. Sq Ft Glass Size Panes Windows Inch Glass x x x 144 = x x x — 144 = x x x 144 = x x x ' .r 144 = x x x 144 = x x x 144 = Total STEEL DOOR C 'x x WOOD DOOR i x x i PATIO DOOR Sq ft i f� a �x [A# Jx 144 = Glass FOUNDATION WALL WINDOWS No. Numb er Sq Ft Glass Size Panes Windows Glass Ix X. x1 =- 144 = I n �p x �p�x x 144= x x x = 144 = TOTAL STEEL DOOR x x - WOOD DOOR x x - PATIO DOOR x x -- 144" = QQQIQ -QQ.SC�-.