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Job 3ire►\ddress: � Ci of Orono <br /> �� ty <br /> O O P.O.Box 66 <br /> "CATEGORY 1" ALTERNATE FOR �,�f� Crystal Bay,MN 55323 <br /> ONE & TWO FAMILY DWELLINGS ��������' �952)249-4600 <br /> EeA <br /> INSTRtiCTIO\S: This alternative ma�� be used for one- and two-famih- d�vellings built to meet the Categon' 1 requirements of <br /> �Iinnesota Rules, Chapter 7670. Complete Parts A, B, and C. Clearly mark plans �vith: insulation R-�•alues; window and skylight U- <br /> �•alues; size and type of equipment; equipment controls; and location of �•apor retarder and �t ind�vash barriers. More detailed <br /> information can be found in the�Llinnesota Energy Code summarv sheets available from the Miruiesota Deparnnent of Commerce. <br /> Part A. BUILDING ENVELOPE <br /> .._ __ _ _ . . __.__ _ . � <br /> . , _ .___ _._.. �_..__. ____�_ <br /> Check proposed envelope joint sealin�option � ❑ Prescriptive(caulking,gaskets,etc.) ❑ Performance(test per 7670.0470 subp 7.C.) <br /> Check thermal energy calculation option used� ' "Cookbook" com lete worksheet below ' <br /> � � P ) ❑ 1�1nCheck method(attach report) <br /> ❑ Performance (attach U-valu:calculations) ❑ Systems Analysis method(attach analysis) <br /> ��Cookbook" WOrriSheet �iI�I�IU�IREQUIREl�1ENTS <br /> (for��Cookbaok"option onlv) <br /> � Ceiling Insulation: Minimum R-38 with 7'h"energy heel; or <br /> IvsTxuCTrotis '�finimum R-44���ith low truss heei; or <br /> Step 1. Check item(s)that design meets on.Lfi�iin�ctm Requirements list ,�Iinimum R-33 «�ith R-5 shea[hing when no attic. <br /> to the rieht. Must meet all items to use"Cookbook"option. Entry Doors: Max. U-value of 0.30 or 1'/,"solid wood with storm <br /> Step 2. Indicate�proposed wall type on table below. ' Rim Joist Insulation: I�4inimum R-19 <br /> Step 3. Indicate�Vindow U-value and source. Floors over unconditioned s�aces: Minimum R-2d <br /> Step 4. Verify total window(including area of all foundation��indows) � Foundation Insulation: i�linimum R-10 `;��(,� E^//�„'�;,.�, <br /> and door area is equal or less than allo«�able percenta�e. ❑ Foundation windo���s: '/�"insulated glass,wood or vinyl frame <br /> TABLE FOR DETERlII\ING�1AJ�I�iU1�I��'L\DO�V AND DOOR AREA <br /> �Saximum A1lowable Total�Vindow and Door Area as <br /> a Percentase of Exposed VVall 12% 14% l6% 18% 20% 22% 2�4% 26% 28% <br /> `ti'all T z S�andard Framina : <br /> �'P � �) �Iaximum A��erage�Vindo�v L'-value(except foundarion�r-indows): <br /> � 2x4,R-13 insulation, !l R-7 sheathing 0.5� 0.47 0.41 � 0.36 0.33 0_30 0.27 0?� 0.23 <br /> ❑ 2x4.R-1� insulation, � R-� sheathin� 0.�2 0.�� 0.39 0.3� 0.31 0.25 0.26 0.24 0.22 <br /> ❑ 2x6,R-:9 insulation,<R-5 sheathing 0.48 0.�1 0.36 0.32 0.29 0.?6 0.24 0.22 �:21 <br /> _x6,R-19 insulation, L� R-� sheathing 0.56 0.48 -0.4� 0.37 0.34 U.31 0.28 0.26 0.24 <br /> ❑ 2x6,R-�1 insulation,<R-� sheathing 0.51 0.43 0.38 0.34 0.30 0.28 0.2� 0.23 0.22 <br /> ❑ 2x6,R-21 insulation, b R-� sheathin� 0.�8 U.50 0.� � 039 0.3� 0.32 0.29 0?7 D.2� <br /> Wall Type (Advanced Framing}: `laximum Avera�e Window L-calue(except foundarion window•s): <br /> � 2x6, R-19 insulation,<R-� sheathin� 0.�? 0.4� -0.39 0.3� 0.31 0.2S 0.26 0.24 0.2? <br /> ❑ 2x6,R-19 insulation, �s R-5 sheathing 0.�8 0.50 0.� 0.39 A.35 0.32 0.29 0.27 0.25 <br /> ❑ 2x6,R-21 insulation,<R-� sheathin� 0.5� 0.47 0.�1 036 0.33 0.30 0.27 0.2� 023 <br /> ❑ 2x6,R-21 insulacion, L• R-5 sheathing 0.60 0.52 0.46 • O.di Q.36 0.33 030 0.23 0.26 <br /> WindowU-value: � '>� � Source: � `FRC ❑ ASHRAE 1993 Handbook � <br /> � <br /> , , <br /> 10 0 X ( �"�L� �ii 1 �; ��t � _ � � % < I .�, � % <br /> window&door area gross exposed�vall area DESIG� ALLO«'ABLE (from table above) <br /> MINNESOTA ENERGY CODE - WHICH RULES MAY I USE ? <br /> TYPE OF RESIDENTI�,I,BUILDL�G APPLICABLE RL�LES <br /> Detached R-3 occupancy 1-and 2-family d�ti•e]lings Chapter 7672; or <br /> Examples: singte family,rivin homes,duplexes Chapter 7670"Categon� 1" with statutorv depressurization and venrilarion requirements <br /> ;�.ttached R-3 occupancy dwellings Chapter 7674; or <br /> Examples: triplex townhouses and row houses , Chapter 7670 with either"Category 1" or "Cateeory 2" provisions <br /> R-1 occapancr•buildings of 3 stories or less Chapter 7674; or <br /> Examples: condominiums or apartments Chapter 7670 with either"Category 1" or "Ca[eeory 3" pravisions <br /> R-1 occupancy buildings over3 stories high Chapter 7676 . <br /> Examples_ hi�h rise condos or aparhnents �.;� � <br /> 11 <br />