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. R � - ;ob Site Address: � 3 (s ��'�� "�` �d�� ``�ATEGORY 1" ALTERNA'I'E FOR ONE & TWO FAMILY DWELLINGS INSTRUCTIONS: This alternative may bc used for one- and rivo-family dw�cllings built to meet the Category 1 requirements of Minnesota Rules,Chapter 7670. Complete Parts A, B, and C. Clearly mark plans with: insulation R-values; window and skylight U- values; size and type of equipment; equipment controls; and location of vapor retarder and ��indwash barriers. More detailed i�iformation can be found in tl�e Nlii�rresotn E��er,,��Code summaiy slleets available from tlle Min�lesota Depai-tment of Con�mei•ce. Part A. BUILDING ENVELOPE ,�. _n __,. �___. � _.._. . . , _ ._ _,_ . R . z ._: _.... - . T . Clieck proposed envelope joint sealing option -� ❑ Prescript�ve(caulkmg gaskets,etc.) ❑ Perfoi�nance(test per 7670.0470 subp.7.C.) Check tllermal energy calculation option used-� ❑ "Cookbook" (co�nplete worksheet below) � MnCheck method(attacli report) - : ❑ Perfomiance (attach U-value calcu]ations) ❑ Systems Analysis metliod(attacl�analysis) MINIMUM REQUIRENIENTS ��Cookbook�� Worksheet �for"Cool<book"o tion onl}�) ❑ Ceiling Insulation: Minimum R-38 with 7%z"energy heel; or INsrttucr�oNs Minimum R-44 with]ow truss heel; or Step l. Check ite�u(s)that design meets on Minimimi Reqtriremeiits list Minin�um R-38 with R-5 sheathin when no attic. to the right.Must meet all items to use"Cookbook"option. ❑ Ent Doors: Max.U-value of 0.30 or 1'/4"solid wood with stonn Step 2. Indicate proposed wall type on table below. ❑ Rim Joist Insulation: Minimum R-19 Step 3. Indicate Window U-va]ue and source. ❑ Floors over unconditioned s aces: Minimum R-24 Step 4. Verify total window(including area of all foundation windows) ❑ Foundation Insulation: Mininmm R-10 and door area is equal or less than allowable percentage. ❑ Foundation windows: %z"insulated glass,wood or vinyl fi�ame : TABLE FOR DETERMINING MA.X11�7UM WINDOV►'AND DOOR AREA _- Maximum Allowable Total Window and Door Aiea as - ' _ ' aPerceniage ofEx osed Wall - 12%- 14% 16%0 ]8% '-20% - 22% 24% 26% 28°/a Wa]1 T e`.(Stapdard Framin ): -'. Maximum Avera e Window U-value(exce t foundation windows): .; ' ❑ 2x4,R-13 insulation, R-7 sheathing 0.55:=; 0.47` 0.41 ,-036 :� 033 0.30 0:27 0.25 -0.23 : ❑ 2x4,R-15 insulation, R-5 sheathing ` 0.52 > 0.45 - <0;39 =0.35 ` 0.31 ' 0.28 ;0:26 0:24 :0.22 ` ❑ 2x6,R-19 insulation,<R-5 sheathin `i 0.48 -: 0.41- 0.36 0.32 0.29 : 0.26•' 0.24 0:22 0.21 - ❑ 2x6,R-l9 insulation, R-5 sheathing > 0.56 ;' . 0.48 0:42 037 . ' 0_34 '_' 0.31 -. 0.28 0:26 0.24 ❑ 2x6,R-21 insulation,<R-5 sheathin 0.51`__ 0.43- 0:38 `034 0.30 '. 0.28`' -0:25 0:23 0.22 .= ❑ 2x6,R-21 insulation, R-S sheathing = 0.58 0:50' 0.44 0.39 0.35''`. 0.32 ' 0:29 027 0.25 :; Wali T 'e (Advaiiced Framii� ): = Maximwn Avera e Window U value(exce t foundation��indows): ` ❑ 2x6,R-]9 insulation,<R-5 sheathing ` 0.52 0.45: . 039 035 031 ' 0.2$- 0:26 0:24 `0.22 - ❑ 2x6,R-]9 insulation, R-5 sheathing � , 0.58 1 0.50` OA.4 0.39 < 035 032- = 0.29 0.27 0.25 ,:' ❑ �x6,R-21 insulation,<R-5 sheathin 0.55. - 0.47 0:41 036 0.33 -- 0.30 ' 0:27 0:25 0 23- ❑ 2x6,R-21 insulation, R-5 sheathing - 0.60 ' 0.52 0.46 0.41 . 0.36, 0:33_: 0.30 0.28 '- 0.26 :s: _ ---- -- - Window.0 value; ' Source:-� ❑NFRC 0 ASHRAE 1993 Handbook� ; ,; �. __ - � 10� � � -� - C� = C--�1°� < �� °�4 : ��indow&door area gross exposed wall area DES]GN ALLOWABLE (from table aboye) ��P�i'�'�JQi�'i �r"�"��c�5 i� �� - �i►�F1iCf�i �iE1�C� �i,4►0 ��€ � TYPE OF.RES.IDENTIAL BUILDIIVG APPLICABLE RULES - Betached R-3 occapancy 1-'and 2-family dwelGsigs " ; Cha�iter 7672; or ' , i _ � . Exa�»ples: single family;twin homes,duj�lexes Chapter 7670"Category 1" with stafutory depressurization a�d ventilation requirenients '- Attached R-3 occupancy d}��ellings- Cliapter 7674; or '. ' ", :Exam les:, tri lex townliouses and row houses ' Cha ter 7670 witfi either"Cate ory 1" or "Cate o 2" rovisions R-1 occuPancy buildings of 3 stories or less Chapter 7674; or =' Exain les: condominiums or apartments Chapter 7670-w�th either `Category]" or "Cate ory 2" rovisions._. _ R-1 occupancy buildings o>'er 3 stories high;. Chapter 7676 _ � - ,- .�Bxam les: hi h rise condos or a�artments` �5�=� - -