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Jul� Sile /ldcicess: 14�� 7��_ov� � i� �`��+'� _ _ t �' �� "CAT�GOI�.Y 1" AL7,ERNAT� I�OR - OI�IE � TWO rAMILY DWELLINGS 1NS'TRUC'I'IONS: 1'1►is altcrnalive n�ay �e used for one- and t«�o-family d�vcllings built to �ncel tlic Category 1 rcyuirements of �Iinnesota Rules, Chapter 7G70. Complete Parts A, B, and C. Clearly mark plans willi: insulation R-values; window and skylight U- :alues; size and type of equipment; equipment controls; and location of vapor retarder and windwash barriers. More detailed ;nforn�ation can be found in lhe Afiruiesota Energy Code sununary slieets available from the Minnesota Department of Commerce. Part A. BUILDING ENVELOPE ., . ._ . ._., . _ . _ . __ . . . .... . . . Check proposed envelope joint sealing option -� ❑ Prescriptive(caulking,gaskets,etc.) 0 Performance(test per 7670.0470 subp. 7.C.) Check thermal energy calculation option used -� ❑ "Cookbook" (complete worksheet below) j� MnCheck method(attach report) ❑ Performance (attacli U-value calculations) ❑ Systems Analysis melfiod (attach analysis) ��Cookbook�� W�1-ksheet MINI111UNt REQUIREMENTS Cor"Cookbook"o tion ool ❑ Ceiling lnsulation: Minimum R-38 with 7'h"energy heel; or INSTRUCTIONS Minimum R-44 with low truss heel; or itep I. Check item(s)that design meets on Minimwrt Requiremen�s list Minimum R-38 with R-5 sheathin when no attic. to the righl. Must meet all items to use"Cookbook"option. ❑ Entry Doors: Max. U-value of 0.30 or 1'/."solid wood with storm �tep 2. Indicate proposed wall type on table below. ❑ Rim Joist Insulation: Minimum R-19 �tep 3. Indicate Window U-value and source. ❑ Floors over unconditioned s aces: Minimum R-24 �tep 4. Verify total window(including area of all foundation windows) ❑ Foundation Insulation: Minimum R-10 and door area is equal or less than allowable percentage. ❑ Foundation windows: %"insulated lass,wood or vinvl frartie TABLE FOR DETERM1NtNG MAXI�IU�i�i'IIYDOW AND DOOR AREA �laximum Allowable Total Window and Door Area as i Percenta e of Ex osed Wall 12% 14% 16% 18% 20% 22% 24% 26% 28% Nall T e Standard Framin : Maximum Avera e Window U-value exce t Coundation windows : J 2x4,R-13 insulation,2 R-7 sheathing 0.55 0.47 0.41 0.36 0.33 0.30 O.Z7 0.25 0.23 � 2x4,R-15 insulation,2 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 0.2G 0.24 0.22 0.21 � 2x6,R-19 insulation,2 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 0.38 0.34 0.30 0.28 0.25 0.23 0.22 > 2x6,R-ZI insulation,2 R-5 sheathing 0.58 0.50 0.44 0.39 0.35 0.32 0.29 0.27 0.25 r1'all 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 0.35 0.3 I 0.28 0.26 0.24 0.22 � 2x6,R-19 insulation, Z R-5 sheathing 0.58 O.SO 0.44 0.39 0.35 0.32 0.29 0.27 0.25 � 2x6,R-21 insulation,<R-5 sheathin 0.55 0.47 0.41 0.36 033 0.30 0.27 0.25 0.23 ] 2x6,R-21 insulation,2 R-5 sheatfiing 0.G0 O.S2 0.46 0.41 0.36 0.33 0.30 0.28 0.26 Window U-value: � Source: O NFRC ❑ ASHRAE 1993 Handbook 100x -- � � _ ° < ° window&door area gross exposed wall area DESIGN ALLOWABLE (Gom table above) MINNESOTA ENERGY CODE - WHICH RULES MAY l USE ? TYPE OF RESIDENTIAL BUILDING AI'PLICAI3LE RULES Detact�ed R-3 occupancy 1-and 2-family dwellings Chapter 7672; or Exam les: sin le famil twin homes du lexes Cha ter 7670"Cate o 1" with statuto de ressurization and ventilation re uirements Attached R-3 occupancy dwellings Chapter 7G74; or Exam les: tri lex townhouses and row houses Cha ter 7670 with either"Cate o I" or "Cate o 2" rovisions R-1 occupaocy bulldfogs of 3 stories or less Cf�apter 7674; or Exam les: condominiums or a artments Cha ter 7G7U with either"Ca�e or I" or "Cate or 2" rovisions R-I occupancy bulldings over 3 stories hfgh Chapter 767G Exam les: hi h rise condos or a ar�ments ��