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1pb �:i Add: 55: "CATEGORY » CATEGORY I ALTERNATE FOR ONE & TWO FAMILY DWELLINGS INSTRUC'rIONS: This alternative nla}' I)c usctl for one- and two-family dwellings built to i' the Catecyory 1 requirements d)f Minnesota Rules, Chapter 7670. Complete Parts A, B. and C. Clearly mark plans with: insulation R-%al;:es: v.indo%% mid sl%li_ia t.- values; size and type of equipment; equipment control's; and location of vapor retarder and wind%%asa barriers. Xlore c! ,ailed information can be found in the Alinnesora Elwi-tCv('acts!Summary sheets available from the Minnesota Depannier.t of Commerce. Part A. JBUILDING ENVELOPE. Check proposed envelope joint scaling option 4 ❑ Preseripth e(caulking.gasket;.etc.) ❑ Pe6ormance(tes:per 7670.U470 suhp. Check thermal energy calculation option used 4 "Cookbook'" (complete worksheet below) ❑ hlnCheek method(attach report) ❑ Performance (attach U-value calculations) ❑ Systems Analysis method(attach anal%sis) "Cookbook" Worksheet MINIMUM REQUIREMENTS (for"Cookbook"option only) M . Ceiling Insulation: Minimum R-33%%ith 7'i;'crergy heel: or INSTRt;CTIC1Ns Minimum R4.1 with lo%�'truss heel. or Step 1. Check item(s)that design meets on.11hunwrn Requirernen.11;list 4inimum R-38 with R-5 sheathing%then no URIC. to the n__ht \lust meet all items to use"Cookbook"u;tion ntr% Door$: I%L•ax. U-value of0.30 tie P."solid gaud%%ah stor ) Step 2. Indicate proposed%%all t%pe on table beta%% int Joist Insulation: Plininaum RAA Step 3. Indicate Windom U-value.and source. Ffoors over unconditioned space,: Minimum R-24 Step 4. Verify total %%indow(including area ofall foundation%%indows) F ndation Insulation: Minimum R-10 and door area is equal or less than alluwable percentage. Found uion windows: 'ii'insulutad glass.mood or vim l tiame TABLE FOR DETERaMINING MAXIti1Ubl WINDOW AND DOOR AREA . . Maximum Allowable Total Window and Door Arca as t... . a Percentage of Exposed Wall 13% ` 14%' 1 16% 18% 20% 22% 24% 26% 28% Wall Type (Standard Framing): 1`•laximutn Avera_ee Window U-value(except foundation windows): ❑ 2x4.R-13 insuladoh. Z R-7 sheathing 0.55 0.47 0.41 1 0.36 0.33 . 0.30 0.27 0.25 0.23 ❑ 2x4 -15 insulation. Z R-5 sheathing 0.52 0.45 •0.39 1 0.35 0.31 0.23 0.26 0.24 0.22 GP-1x6. R-19 insulation.< R-5 sheathing 0.43 0.41 0.36 1 0.32 0.29 - 0.26 0.24 0.22 0.21 0 2x6. R-19 insulation. 2 R-5 sheathing 0.56 .: 0.43 0.42 0.37 0.34 . 0.31 0.23 0?6 0.24 Q 2x6.R-21 insulation.<R-5 sheathing 0.51 0.43 0.33 0.34 0.30 - 0.23 0.25 0.23 0.22 0 20. R-21 insulation. 2 9-5 sheathing 0.53 0.50 0:44 0.39 0.35 0.32 ( 0.29 0.27 0.25 Wall Type (Advanced Framing): Maximum Average Window U-value(except foundation windows): - 0 20.R-19 insulation.<R-5 sheathing 0.52 0.45 0.39 0.35 0.31 0.28 0.26 0.24 0.22 0 2x6. R-l9 insulation. r R'-5 sheathing 0.58 0.50 0.44 0.39 0.35. 0.32 0.29 0.27 0.25 R7 46. R-21 insulation.<R-5 sheathing, 0.55 0.47. 0.41 0.36 0.33 0.30 0.27 0.25 0.23 t,7 2x6.R-21 insulation. Z R-5 sheathing 0.60 0.52 0.46 0.41 0.36 0.33 1 0.30 0.28 0.26 wihdow U-value: Source: ❑NFRC SHRAE 1993 Handbook 100 x I(�!�!�Z� % < % i wiridow&door area gross exposed%salt area DESIGN ALLOR'ABLE (from table above) MINNESOTA ENERGGY' CODE - WHICH, RULES. MAY 1 USE ? TYPE OF RESIDENTIAL BUILDING � APPLICABLE RULES Detached R-3 occupancy I-and 2-family dwellings Chapter 7672: or Examples: single family.,twin homes.duplexes Chapter 7670,"Category 17 with statutory depressurization and ventilation requirements Attached R-3 occupancy dwellings Chapter 7674; o? Examples: triplex townhouses and row houses Chi,t,r 7670 with either"Category I" or 2" provisions R-1 occupancy buildings of3 stories or less Chapter 7674.-or _71 Exa:aples: condominiums or ap;rtn';- :s Chapter 7670 or "Catetooryz" provuaons