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<br /> Job�Site Address: sa� "' �CL�u/!E� �� � PLACE YOUR CITY LOGO HERE �
<br /> Provided for your use-courtesy of the
<br /> "CATEGORY 1" ALTERNATE FOR CityofInver�G�'r�i Heights
<br /> ONE & TWO FAMILY DWELLINGS � � 65���So �
<br /> INSTRUCTIONS: This alternative may be used for one- and two-family dwellings built to meet the Category 1 requirements of
<br /> Minnesota Rules,Chapter 7670. Complete Parts A,B,and C. Clearly mazk plans with: insularion R-values; window and skylight U-
<br /> values; size and type of equipment; equipment controls; and location of vapor retarder and �r�indwash barriers. More detailed
<br /> information can be found in.the Minnesota Energy Code summary sheets available from the Minnesota Deparhnent of Commerce.
<br /> Part A. BUILDING ENVELOPE .
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<br /> Check proposed envelope joint sealing ophon � ❑ Prescnptive(caulking,gaskets,etc.) O Performance(test per 7670.0470 subp 7 C.) .
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<br /> Cheek thermal eneigy calculahon ophon used� ❑ "Cookbook" (complete worksheet below) ❑ MnCheck method(attach report) ����
<br /> � ;. ,.;;: , t} ..;' ❑ Performance (attach U-value calculations) ❑ Systems Analysis method(attach analysis) �
<br /> GG » ,, i1-IINI�IUI�I REQUIREb1ENTS :.
<br /> Cookbook Worksheet �for«Cookbook"optiononly) :
<br /> ❑ Ceiling Insulation: Minimum R-38 with 7'/:"energy heel; or
<br /> IxsrxucTTorrs Minimum R-44 with low truss heel; or
<br /> Step 1. Check item(s)that design meets on Minim:rm Requirements list Nlinimum R-38 �t�ith R-5 sheathing when no attic.
<br /> to the right.Must meet all items to use"Cookbook"oprion. ❑ Entry Doors: Mac.U-value of 030 or 1'/1'solid wood with storm
<br /> Step 2. Indicate proposed wall rype on table below. ❑ Rim Joist Insulation: Minimum R-19
<br /> Step 3. Indicate Window U-value and source. ❑ Floors over unconditioned spaces: Minimum R-24
<br /> Step 4. Verify total window(including area of all foundation windows) ❑ Foundation Insulation: Minimum R-10
<br /> and door area is equal or less than allowable percentage. ❑ Foundation windo�vs: '/:"insulated glass,wood or vinyl frame
<br /> '` • , , ;:TABLE EOR DETERMINING Mr1�IbiU1VI WIND.O�V AND DOOR ARE�, ''
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<br /> Zlaximum�`Allowable Tota1 Window and Dooi`Area as ,�.:; " � � "' '
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<br /> a Percentage of Exposed Wali" ` ". ` ` : ` � 12% ' ' 14% '- ,,16% 18% - 20% ' 22%" �,.Z4% '26% :' _`28%�_-
<br /> �Valt Type (Standard Frammg) • " Maximum Average Waidow U-value(ezcept foundarion a�indows):,:; , '' � � :'
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<br /> ❑ 2x4,R-13 insulation, b R-7 sheathing ''0.5.� 4.47 '; �(3.41, 0.36 '_ 0.33 0.30 `0.27 0.25 ' �.0.23' -
<br /> O 2x4,R-1 insulation,!1 R-5 sheathing D.52 0.45 ' ;;0.39 0.35 �: 0.31 0.28 4.26 0.24 O.Z2 ;
<br /> � 2x6,R-19 insulation,<R-5 sheathing ::0.48 , 0.41'.;. :0,36 - 032 0.29 ' ' 0.26 � ,0:24 ,;,,..0.22 , Q 21:'_;
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<br /> 0 2x6,R-19 insulation,b R-5 sheathing ;�0.56 0.48 :;. .Q.42 037 _. 0.34 0.31 �:U.28 0.26 0.24 :'-
<br /> ❑ 2x6,R-21 insulation,<R-5 sheathing ""=0.51 0.43 ' �Q:3S U.34 ' 030 '' 0.28 0.25 '0.23 ' - . 0.22:;:
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<br /> ❑ 2x6,R-21 insulation, b R-5 sheathing ..=.:0:58 0.50,; : ,=�0.�44 . 0:39. : 03� 032 U.29 0?7 ' 0:25,;-
<br /> Wall Type (Advanced Fratrung}, �:: ' � : 'Maximum Average Window i�value(except foundarion windows): ;-.
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<br /> ❑ 2x6,R-19 insulation,<R-5 sheathing ; 0.52 0.4� ;: �:039 :.0.35 03] ' 0.28: ,0.26 ;:d.24 .0.22-;;
<br /> ❑ 2x6,R-19 insulation, b R-5 sheathing ,�.:0.58 0.50 : :. 0:44 ;:;0.39 '•.035 0.32 r � 0.29 , 0 27 . ;0:25:'
<br /> 2x6,R-21 insularion,<R-5 sheathing ,��0:55 0.47 :- '0.41 0.36 0.33 0.30 0?7 4.25 =• ,.`0.23':
<br /> ❑ 2x6,R-21 insu!ation, b R-5 sheathing "D.6Q 0.52 . •�U.46 • 0.41 Q36 Q33 0.30 f3.28 ' .� Q.26
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<br /> ;:,Window U-value: � ,; , • ' Source:` ❑NFRC ❑ ASHRAE 1993 Handbook - '
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<br /> 100 x '�- ��--� _ % < % ` _
<br /> window&door azea gross exposed wall area ; .-:;.DESIGN ALLO«'ABLE _(from table above) -� .� � -
<br /> MINNESOTA ENERGY CODE - WHICH RULES MAY I USE ?
<br /> TYPE OF RESIDENTIAL BUII.DING = ` ". . - APPLICABLE RULES
<br /> Detached R-3 occupancy 1-and 2-family dwellings ., - Chapter 7672; or_ • - -
<br /> Examples; singte family,hvin homes,duptexes ' Chapter 7670"Category 1" with statutory depressurization and ventilarion requirements":
<br /> Attached R-3 occupancy dwetlings , . �:�. Chapter 7674;.or- .;':
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<br /> ` Examplas;- friplex townhouses and row houses . : Chapter 7670 a+ith either"Category 1" or "Categorv_" rovisions �
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<br /> R-i occupancy buildings of 3„stories or less � : - Chapter 7674; or . '. +
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<br /> Examoles: condominiums or apartments Chapter 7670 with either"Category l" or "Category 2" provisions ' �- `
<br /> R-1 occupancy buildings over 3 stories 6igh .,-• ,;;:Chapter 7676 =<
<br /> Examples::high rise candos or.apartrnents <.'. ',�;;,; . . :. , ` ` , :,4.
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