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� Site Address: Ciry of orono ' 'pg'��'p`� ,��;, "CATEGORY 1" ALTERNATE FOR �� F�' �x � ,r ��9��¢4�G... ONE & TWO FAMILY DWELLINGS 952-249-4600 I�vST[tuC7'�o1vs: This alternative may be used for one-and two-family dwellings 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 windwash barriers. More detailed infonnation can be found in the A7i�7Jzesota E�zerw Coc�e summary sheets available fi-om the Minnesota Department of Commerce. Part A. BUILDING ENVELOPE Check proposed envelope joint sealing option � v[� Prescriptive(caulking,gaskets,etc.) ❑ perfornlance(test per 7670.0470 subp. 7.C.� Check thennal energy calculation option used� [�`Cookbook" (complete worksheet below) � MnCheck method(attach repert) � Perfonnance (attach U-value calculations) � Systems Analysis method(attach analysis) ��Cookbook�� Worksheet MINiMUM REQUIREMENTS for"Cookbook"o tion ont ) Ceiling Insulation: Minimmn R-38 with 7%s"energy heel; or INSrRUCT[ONS Minimum R-44 with low truss heel; or Step l. Check itein(s)that design ineets on Minrmum Requirenie�ats list Minimum R-38 with R-5 sheathin when no attic. to the right.Must meet all items to use"Cookbook"option. Entry Doors: Max. U-value of 0.30 or 1'/<"solid wood with stonn Step 2. Indicate proposed wall type on table below. L'� Rim Joist Insulation: Minimum R-l9 Step 3. Indicate Window U-value and source. Floors over unconditioned s aces: Minimum R-24 Step 4. Verify total window(including area of all foundation windows) Foundation Insulation: Minirnum R-10 And door area is equal or less than allowable percentage. ❑ Foundation windows: Yz"insulated glass,wood or vinyl frame TABLE FOR DETERMINIIYG MAXIMUM WINDOW A�VD DOOR AREA Maxiinuin Allowable Total Window and Door Area as a Percentage of Ex osed Wall 12% 14% 16% 18% 20% 22% 24% 26% 28% Wall T e (Standard Framin�): Maximum Avera e Window U-value(exce t foundation windows): ❑ 2x4, R-13 insulation, >_R-7 sheathing 0.55 0.47 0.41 0.36 0.33 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� 0.48 0.41 0.36 0.32 0.29 0.26 0.24 0.22 0.21 ❑ 2x6, R-19 insulation,?R-5 sheathing 0.56 0.48 0.42 0.37 0.34 0.31 0.28 0.26 0.24 ❑ 2x6, R-21 insulation,<R-5 sheathin 0.51 0.43 038 0.34 0.30 0.28 0.25 0.23 0.22 ❑ 2x6, R-Zl insulation, >_R-5 sheathing 0.58 0.50 0.44 0.39 0.35 0.32 0.29 0.27 0.25 Wall T e (Advanced Framin ): Maximum Avera e Window U-value(exce t foundation windows): ❑ 2x6, R-19 insulation,<R-5 sheathin 0.52 0.45 0.39 0.3� 0.31 0.28 0.26 0.24 0.22 ❑ 2x6, R-19 insulation,>_ R-5 sheathing 0.58 0.50 0.44 0.39 0.35 0.32 0.29 0.27 0.25 ❑ 2x6, R-2l insulation,<R-5 sheathin; 0.55 0.47 0.41 0.36 0.33 0.30 0.27 0.?5 0.23 ❑ 2x6, R-?I insulation, >_ R-5 sheathing 0.60 0.52 0.46 0.41 0.36 0.33 0.30 0.28 0.26 __ _... ___ Window U-value: Source: '. ❑ NFRC ❑ ASHRAE 1993 Handbook ' ... � �.. ..... .� ... _ __ _... _._.... �� X = - � ' _ ��' � °�n , < �� °/n ; window&door area gross exposed wall area DES[GN ALLOWABLE (from table above) MINNESOTA ENFRGY CODE WHICH RULES MAY I USE � TYPE OF RESIDENTIAL BUILDING APPLICABLE RULES Detached R-3 occupancy 1-and 2-family dwellings Chap[er 7672; or Exam les: sin le f'amil ,twin homes,du leYes Cha ter 7670"Cate�o 1" with statuto de ressurization and ventilation re uirements Attached R-3 occupancy dwellings Chapter 7674; or Exam fes: tri lex townhouses and row houscs Cha ter 7670 with either"Cate o 1" or `'Cate o 2" rovisions R-1 occupancy buildings of 3 stories or less Chapter 7674; or Exam les: condominiums or a amnents Cha ter 7670 with either"Cate o l" or "Cate o 2" rovisions R-1 occupancy buildings over 3 stories high Chapter 7676 Exam les: hi h rise condos or a artments �,..,:,��