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Home My WebLink AboutLA211781 - 18168 Gavel Lane - App and Forms wSWPPPRESIDENTIAL BUILDING PERMIT APPLICATION CITY OF LAKEVILLE BUILDING INSPECTIONS DEPARTMENT 20195 HOLYOKE AVENUE LAKEVILLE, MN 55044 952-985-4440 Office Use Only __________________ Permit Number ___________________ Received By ___________________ Date Received ___________________ Fee Total SITE ADDRESS: MAILING ADDRESS: CITY: STATE: ZIP: JOB DESCRIPTION:__________________________________ MASTER PLAN: (Number or Address)____________________ LIST OTHER STRUCTURES ON PROPERTY:_______________________________________________________________ ESTIMATED VALUATION: PROPOSED START DATE: END DATE: (New Residential Only): LEGAL DESCRIPTION: LOT: _____ BLOCK: _____ SUBDIVISION: APPLICANT IS: RESIDENT OWNER CONTRACTOR EMAIL NEW MODEL HOME: YES NO (IF YES – ADMINISTRATIVE PERMIT REQUIRED) PLEASE FILL OUT THE FOLLOWING COMPLETELY (All Contractor information must be as listed on State License) RESIDENT OWNER NAME:_______________________________________________________________________________ HOME PHONE #:_____________________________ CELL PHONE:___________________________ GENERAL CONTRACTOR Homeowner Contractor CONTRACTOR:_______________________________________________________________________ LICENSE #:BC______________ LEAD CERTIFICATE#_______________ (PRE 1978 STRUCTURE) OFFICE PHONE #:_____________________________ CELL PHONE:___________________________ ADDRESS:____________________________ CITY:________________ ST:______ ZIP:____________ PLUMBING WORK Homeowner Contractor CONTRACTOR:__________________________________________LICENSE #: PM______________ OFFICE PHONE #:_____________________________ CELL PHONE:___________________________ ADDRESS:____________________________ CITY:________________ ST:______ ZIP:____________ MECHANICAL WORK Homeowner Contractor CONTRACTOR:________________________________________ _______________________________ _____________________________ CELL PHONE:___________________________ ADDRESS:____________________________ CITY:________________ ST:______ ZIP:____________ BOND #:_______________________________________ EXPIRATION DATE____________________ SEWER/WATER CONTRACTOR New Construction Only NAME:________________________________________________ ______________________________ _____________________________ CELL PHONE:______________________________ BOND #:_______________________________________ EXPIRATION DATE____________________ NAME OF APPLICANT (Please Print)DATE I HEREBY APPLY FOR PERMIT AND ACKNOWLEDGE THAT ALL INFORMATION ON THIS APPLICATION IS COMPLETE AND ACCURATE. THIS IS NOT A PERMIT AND WORK IS NOT TO COMMENCE UNTIL SUCH TIME A PERMIT IS ISSUED. ALL WORK WILL COMPLY WITH LAKEVILLE CITY CODE, THE MINNESOTA STATE BUILDING CODE, AND THE APPROVED PLANS. INTEREST EARNINGS ON ESCROW ACCOUNTS, IF ANY, WILL BE RETAINED BY THE CITY TO OFFSET THE ADMINISTRATIVE COSTS ASSOCIATED WITH PROCESSING THE ESCROW APPLICATION AND REFUND. OFFICE PHONE #:_ OFFICE PHONE #:_ *Entering your name affirms your intent to comply with the statement above. * Submit Application To: permits@lakevillemn.gov and jsexton@brandlanderson.com RESIDENTIAL BUILDING PERMIT APPLICATION PAGE 2 OFFICE USE ONLY BUILDING PERMIT TYPE REQUIRED INSPECTIONS SINGLE FAMILY DWELLING BUILDING DUPLEX AS BUILT TOWNHOUSE UNITS BUILDING FINAL DETACHED TOWN HOUSE UNIT CONDO REROOF RESIDE RES ADDN/REPAIR/RMDL DECK PORCH GARAGES LOWER LEVEL FINISH ADDITION FOUNDATION ONLY MISCELLANEOUS DEMO APPROVED BY: BUILDING INSPECTOR: Date: PLUMBING/MECHANICAL INSPECTOR: Date: COMMENTS: CITY BUILDING VALUATION: $ BUILDING PERMIT FEES $PERMIT FEE $PLAN CHECK $SURCHARGE $METRO SAC $CITY WATER HOOKUP UNIT $CITY SEWER HOOKUP UNIT $LANDSCAPE ESCROW $TREE ESCROW $MISC ESCROW $PLUMBING $MECHANICAL $SEWER WATER WATER METER PRESSURE REDUCING VALVE $OTHER $TOTAL METER SIZE PRESSURE REDUCING VALVE SEWER/WATER SEWER/WATER FINAL STREET DRAINTILE BUILDING INFORMATION TYPE OF CONSTRUCTION ZONING CODE EDITION FIRE SUPPRESSION SYSTEM OCCUPANCY GROUP MECHANICAL AIR TEST FINAL ROUGH-IN PLUMBING FINAL ROUGH-IN INSULATION LATH DECK FOOTING FIREPLACE FOOTING FOUNDATION FRAMING PORCH FRAMING PORCH FOOTING POURED WALL SITE LOWER LEVEL FINAL OTHER DECK FRAMING LOWER LEVEL FRAMING LANDSCAPING DECK FINAL $ $ ACCESSORY BUILDING EGRESS WINDOW UNDERGROUND Date Certificate Posted x Passive (No Fan) Active (With fan and monometer or other system monitoring device) Location (or future Location) of Fan: X R-15 X X R-20 X R-20 X R-20 X R-49 X R-49 X R-38 X R-38 X Not applicable, all ducts located in conditioned space R-8 MECHANICAL SYSTEMS Not required per mech. code 4"Passive Powered Interlocked with exhaust device. Describe: Input in BTUS:40000 Capacity in Gallons:Other, describe: AFUE or HSPF%92% Cfm's " round duct OR " metal duct Not required per mech. code X Passive X Low: Other, describe: Low: Cfm's Capacity continuous ventilation rate in cfms:5 " round duct OR Total ventilation (intermittent + continuous) rate in cfms: " metal duct Other Please Describe Here HEAT LOSS 34828 HEAT GAIN 17645 COOLING LOAD 22072 Building Envelope air Tightness:Duct system air tightness: Below Entire Slab Ceiling, flat Total R-Value of all Types of InsulationType: Check All That Apply Non or Not ApplicableFiberglass, BlownFiberglass, Batts Manufacturer Make-up Air Select a Type Per R401.3 Building Certificate. A building certificate shall be posted on or in the electrical distribution panel.4/7/23 New Construction Energy Code Compliance Certificate Name of Residential Contractor Brandl Anderson MN License Number Mailing Address of the Dwelling or Dwelling Unit18168 Gavel Lane 125 Interior Bryant Domestic Water Heater Heating System NAT GAS Bryant 912SD36040E17 Average U-Factor (excludes skylights and one door) U: .27-.31 Heating or Cooling Ducts Outside Conditioned Spaces Floors over unconditioned areas Describe other insulated areas Fuel Type Solar Heat Gain Coefficient (SHGC): Windows & Doors Model R-value.25-.29 GPVL-50 BA13NA024 Lakeville Plan ID Trillium Mid Unit Location of duct or system: Foundation Wall Perimeter of Slab on Grade Rim Joist (1st Floor) Ceiling, vaulted City Bay Windows or cantilevered areas RADON CONTROL SYSTEM Rim Joist (2nd Floor) Wall exterior Interior THERMAL ENVELOPE Insulation Location Foam, Closed CellFoam Open CellMineral FiberboardRigid, Extruded PolystyreneRigid, Isocynurate Appliances AOSMITH 63 NAT GAS R-410A Cooling System Rating or Size SEER or EER 50 Output in Tons:2 Efficiency RESIDENTIAL LOAD CALC 13 Locations of Fans, describe: Location of duct or system: Select Type furnace room 63Heat Recover Ventilator (HRV) Capacity in cfms: Energy Recover Ventilator (ERV) Capacity in cfms: 126 Describe any additional or combined heating or cooling systems if installed: (e.g. two furnaces or air source heat pump with gas back-up furnace Combustion Air Select a Type Balanced Ventilation Capcity in CFMS: High: High: Mechanical Ventilation System 18168 Gavel Lane Lakeville Trillium Mid Unit HVAC Load Calculations for Brandle Anderson Prepared By: Josh Gray Sabre Heating And A/C 15535 Medina Road Plymouth, Mn 55447 763-473-2267 Friday, April 7, 2023 Rhvac is an ACCA approved Manual J, D and S computer program. Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D. Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Sabre Plumbing & Heating 18168 Gavel Lane Lakeville Trillium Mid Unit Plymouth, MN 55447 Page 2 Project Report General Project Information Project Title:18168 Gavel Lane Lakeville Trillium Mid Unit Designed By:Josh Gray Project Date:Friday, April 7, 2023 Client Name:Brandle Anderson Company Name:Sabre Heating And A/C Company Representative:Josh Gray Company Address:15535 Medina Road Company City:Plymouth, Mn 55447 Company Phone:763-473-2267 Design Data Reference City:Minneapolis/St. Paul AP, Minnesota Building Orientation:Front door faces East Daily Temperature Range:Medium Latitude:44 Degrees Elevation:834 ft. Altitude Factor:0.970 Outdoor Outdoor Outdoor Indoor Indoor Grains Dry Bulb Wet Bulb Rel.Hum Rel.Hum Dry Bulb Difference Winter:-15 -15.33 n/a 30%72 33.90 Summer:88 72 47%50%75 29 Check Figures Total Building Supply CFM:788 CFM Per Square ft.:0.346 Square ft. of Room Area:2,277 Square ft. Per Ton:1,238 Volume (ft³):17,058 Building Loads Total Heating Required Including Ventilation Air:34,828 Btuh 34.828 MBH Total Sensible Gain:17,645 Btuh 80 % Total Latent Gain:4,427 Btuh 20 % Total Cooling Required Including Ventilation Air:22,072 Btuh 1.84 Tons (Based On Sensible + Latent) Notes Rhvac is an ACCA approved Manual J, D and S computer program. Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D. All computed results are estimates as building use and weather may vary. Be sure to select a unit that meets both sensible and latent loads according to the manufacturer's performance data at your design conditions. M:\ ...\18168 Gavel Lane Lakeville Trillium Mid Unit.rh9 Friday, April 7, 2023, 12:57 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Sabre Plumbing & Heating 18168 Gavel Lane Lakeville Trillium Mid Unit Plymouth, MN 55447 Page 3 Load Preview Report Scope Net Ton ft.² /Ton Area Sen Gain Lat Gain Net Gain Sen Loss Sys Htg CFM Sys Clg CFM Sys Act CFM Duct Size Building 1.84 1,238 2,277 17,645 4,427 22,072 34,828 393 788 788 System 1 1.84 1,238 2,277 17,645 4,427 22,072 34,828 393 788 788 10x15 Ventilation 694 2,414 3,108 4,643 Supply Duct Latent 220 220 Return Duct 124 92 216 823 Humidification 4,384 Zone 1 2,277 16,827 1,701 18,528 24,979 393 788 788 10x15 1-Lower Level 808 2,987 0 2,987 9,131 144 140 140 2--6 2-Main Level 808 9,356 1,701 11,057 8,023 126 438 438 4--7 3-Upper Level 661 4,485 0 4,485 7,825 123 210 210 2--7 M:\ ...\18168 Gavel Lane Lakeville Trillium Mid Unit.rh9 Friday, April 7, 2023, 12:57 PM Rhvac - Residential & Light Commercial HVAC Loads Elite Software Development, Inc. Sabre Plumbing & Heating 18168 Gavel Lane Lakeville Trillium Mid Unit Plymouth, MN 55447 Page 4 Total Building Summary Loads Component Description Area Quan Sen Loss Lat Gain Sen Gain Total Gain LOWEE: Glazing-Low E Builder Grade Window, U-value 0.32, SHGC 0.3 172 4,787 0 5,537 5,537 11J: Door-Metal - Fiberglass Core, U-value 0.6 37.8 1,972 0 544 544 R20 - 12F0sw: Wall-Frame, Custom, R-20 Insulation in 2x6 Stud Cavity, siding finish, wood studs, U-value 0.065 1139.2 6,442 0 984 984 15A-15sffc-8: Wall-Basement, concrete block wall, R-15 foam board to floor, no framing, no interior finish, filled core, 8' floor depth, U-value 0.034, above grade U-value 0.055 279 881 0 16 16 RJ20: Wall-Frame, Custom, R-20 Closed Cell Spray Foam Insulation in Frame Rim Joist, U-value 0.05 186 808 0 124 124 R49 16B-49: Roof/Ceiling-Under Attic with Insulation on Attic Floor (also use for Knee Walls and Partition Ceilings), Custom, Vented Attic, No Radiant Barrier, Dark Asphalt Shingles R-49 Insulation, U-value 0.02 661 1,150 0 635 635 22B-10pm: Floor-Slab on grade, Vertical board insulation covers slab edge and extends straight down to 3' below grade, any floor cover, R-10 insulation, passive, heavy dry or light wet soil, U-value 0.355 124 3,830 0 0 0 20P-30: Floor-Over open crawl space or garage, Passive, R-30 blanket insulation, any cover, U-value 0.035 500 1,523 0 140 140 Subtotals for structure:21,393 0 7,980 7,980 People:4 800 920 1,720 Equipment:901 4,116 5,017 Lighting:750 2,558 2,558 Ductwork:4,408 312 910 1,223 Infiltration: Winter CFM: 0, Summer CFM: 0 0 0 0 0 Ventilation: Winter CFM: 125, Summer CFM: 125 4,643 2,414 694 3,108 Humidification (Winter) 11.95 gal/day :4,384 0 0 0 AED Excursion:0 0 468 468 Total Building Load Totals:34,828 4,427 17,645 22,072 Check Figures Total Building Supply CFM:788 CFM Per Square ft.:0.346 Square ft. of Room Area:2,277 Square ft. Per Ton:1,238 Volume (ft³):17,058 Building Loads Total Heating Required Including Ventilation Air:34,828 Btuh 34.828 MBH Total Sensible Gain:17,645 Btuh 80 % Total Latent Gain:4,427 Btuh 20 % Total Cooling Required Including Ventilation Air:22,072 Btuh 1.84 Tons (Based On Sensible + Latent) Notes Rhvac is an ACCA approved Manual J, D and S computer program. Calculations are performed per ACCA Manual J 8th Edition, Version 2, and ACCA Manual D. All computed results are estimates as building use and weather may vary. Be sure to select a unit that meets both sensible and latent loads according to the manufacturer's performance data at your design conditions. M:\ ...\18168 Gavel Lane Lakeville Trillium Mid Unit.rh9 Friday, April 7, 2023, 12:57 PM Site address Contractor 1 Total/ continuous 60/40 70/40 80/40 90/45 100/50 110/55 120/60 130/65 140/70 150/75 Equation 11-1 Directions - Determine the total and continuous ventilation rate by either using Table R403.5.2 or equation 11-1. The table and equation are below Total required ventilation Continuous ventilation Section A Total ventilation – The mechanical ventilation system shall provide sufficient outdoor air to equal the total ventilation rate average, for each one‐hour period according to the above table or equation. For heat recovery ventilators (HRV) and energy recovery ventilators (ERV) the average hourly ventilation capacity must be determined in consideration of any reduction of exhaust or out outdoor air intake, or both, for defrost or other equipment cycling. Continuous ventilation - A minimum of 50 percent of the total ventilation rate, but not less than 40 cfm, shall be provided, on a continuous rate average for each one‐hour period. The portion of the mechanical ventilation system intended to be continuous may have automatic cycling controls providing the average flow rate for each hour is met. (0.02 x square feet of conditioned space) + [15 x (number of bedrooms + 1)] = Total ventilation rate (cfm) Date Completed By Ventilation Quantity (Determine quantity by using Table R403.5.2 or Equation 11‐1) Square feet (Conditioned area including Basement – finished or unfinished) Number of bedrooms Table R403.5.2 Total and Continuous Ventilation Rates (in cfm) Number of Bedrooms 2 3 4 5 6 Total/ continuous 1000‐1500 75/40 90/45 105/53 120/60 135/68 Conditioned space (in sq. ft.) Total/ continuous Total/ continuous Total/ continuous Total/ continuous 145/73 2001‐2500 95/48 110/55 125/63 140/70 155/78 1501‐2000 85/43 100/50 115/58 130/65 165/83 3001‐3500 115/58 130/65 145/73 160/80 175/88 2501‐3000 105/53 120/60 135/68 150/75 185/93 4001‐4500 135/68 150/75 165/83 180/90 195/98 3501‐4000 125/63 140/70 155/78 170/85 205/103 5001‐5500 155/78 170/85 185/93 200/100 215/108 4501‐5000 145/73 160/80 175/88 190/95 225/1135501‐6000 165/83 180/90 195/98 210/105 Continuous Ventilation Method (Choose either balanced or exhaust only) Low cfm:High cfm:Continuous fan rating in cfm (capacity must not exceed continuous ventilation rating by more than 100%) Ventilation Fan Schedule Description Location Intermittent Section C Directions - The ventilation fan schedule should describe what the fan is for, the location, cfm, and whether it is used for continuous or intermittent ventilation. The fan that is chose for continuous ventilation must be equal to or greater than the low cfm air rating and less than 100% greater than the continuous rate. (For instance, if the low cfm is 40 cfm, the continuous ventilation fan must not exceed 80 cfm.) Automatic controls may allow the use of a larger fan that is operated a percentage of each hour. Section D Directions - Describe the operation of the ventilation system. There should be adequate detail for plan reviewers and inspectors to verify design and installation compliance. Related trades also need adequate detail for placement of controls and proper operation of the building ventilation. If exhaust fans are used for building ventilation, describe the operation and location of any controls, indicators and legends. If an ERV or HRV is to be installed, describe how it will be installed. If it will be connected and interfaced with the air handling equipment, please describe such connections as detailed in the manufactures’ installation instructions. If the installation instructions require or recommend the equipment to be interlocked with the air handling equipment for proper operation, such interconnection shall be made and described. Section B Balanced, HRV (Heat Recovery Ventilator) or ERV (Energy Recovery Ventilator) – cfm of unit in low must not exceed continuous ventilation rating by more than 100%. Exhaust only Continuous fan rating in cfm Directions - Choose the method of ventilation, balanced or exhaust only. Balanced ventilation systems are typically HRV or ERV’s. Enter the low and high cfm amounts. Low cfm air flow must be equal to or greater than the required continuous ventilation rate and less than 100% greater than the continuous rate. (For instance, if the low cfm is 40 cfm, the ventilation fan must not exceed 80 cfm.) Automatic controls may allow the use of a larger fan that is operated a percentage of each hour. Ventilation Controls (Describe operation and control of the continuous and intermittent ventilation) One or multiple power vent or direct vent ap‐ pliances or no combus‐ tion appliances Column A One or multiple fan‐ assisted appliances and power vent or direct vent appliances Column B One atmospherically vent gas or oil appliance or one solid fuel appliance Column C Multiple atmospherical‐ ly vented gas or oil appliances or solid fuel appliances Column D 1. a) pressure factor (cfm/sf) 0.15 0.09 0.06 0.03 b) conditioned floor area (sf) (including unfinished basements) Estimated House Infiltration (cfm): [1a x 1b] 2. Exhaust Capacity a) continuous exhaust‐only ventilation system (cfm); (not applicable to ba‐ lanced ventilation systems such as HRV) b) clothes dryer (cfm)135 135 135 135 c) 80% of largest exhaust rating (cfm); Kitchen hood typically (not applicable if recirculating system or if powered makeup air is electrically interlocked and match to exhaust)d) 80% of next largest exhaust rating (cfm); bath fan typically (not applicable if recirculating system or if powered makeup air is electrically interlocked and matched to exhaust) Not Applicable Total Exhaust Capacity (cfm); [2a + 2b +2c + 2d] 3. Makeup Air Quantity (cfm) a) total exhaust capacity (from above) b) estimated house infiltration (from above) Makeup Air Quantity (cfm); [3a – 3b] (if value is negative, no makeup air is needed) 4. For makeup Air Opening Sizing, refer to Table 501.4.2 C. Use this column if there is one atmospherically vented (other than fan‐assisted) gas or oil appliance per venting system or one solid fuel appliance. D. Use this column if there are multiple atmospherically vented gas or oil appliances using a common vent or if there are atmospherically vented gas or oil appliances and solid fule appliances. Table 501.4.1 PROCEDURE TO DETERMINE MAKEUP AIR QUANITY FOR EXHAUST EQUIPMENT IN DWELLINGS (Additional combustion air will be required for combustion appliances, see KAIR method for calculations) Directions ‐ In order to determine the makeup air, Table 501.4.1 must be filled out (see below). For most new installations, column A will be appropriate, however, if atmospherically vented appliances or solid fuel appliances are installed, use the appropriate column. Please note, if the makeup air quantity is negative, no additional makeup air will be required for ventilation, if the value is positive refer to Table 501.4.2 and size the opening. Transfer the cfm, size of opening and type (round, rectangular, flex or rigid) to the last line of section D. A. Use this column if there are other than fan‐assisted or atmospherically vented gas or oil appliance or if there are no combustion appliances. (Power vent and direct vent appliances may be used.) B. Use this column if there is one fan‐assisted appliance per venting system. (Appliances other than atmospherically vented appliances may also be included.) One or multiple power vent, direct vent ap‐ pliances, or no combus‐ tion appliances Column A Multiple atmospherically vented gas or oil ap‐ pliances or solid fuel appliances Column D Duct di‐ ameter 1 – 36 1 – 9 3 37 – 66 10 – 17 4 67 – 109 18 – 28 5 110 ‐ 163 29 – 42 6 164 – 232 43 – 61 7 233 – 317 62 – 83 8 318 – 419 84 – 110 9 420 – 539 111 – 142 10 540 – 679 143 – 179 11 >679 >179 NA Notes: A. An equivalent length of 100 feet of round smooth metal duct is assumed. Subtract 40 feet for the exterior hood and ten feet for each 90‐ degree elbow to determine the remaining length of straight duct allowable. B. If flexible duct is used, increase the duct diameter by one inch. Flexible duct shall be stretched with minimal sags. Compressed duct shall not be accepted. C. Barometric dampers are prohibited in passive makeup air openings when any atmospherically vented appliance is installed. D. Powered makeup air shall be electrically interlocked with the largest exhaust system. Explanation ‐ If no atmospheric or power vented appliances are installed, check the appropriate box, not required. If a power vented or atmospherically vented appliance installed, use IFGC Appendix E, Worksheet E‐1 (see below). Please enter size and type. Combustion air vent supplies must communicate with the appliance or appliances that require the combustion air. Section F calculations follow on the next 2 pages. One or multiple fan‐ assisted appliances and power vent or direct vent appliances Column B One atmospherically vented gas or oil ap‐ pliance or one solid fuel appliance Column CPassive opening 1 – 22 1 – 15 Passive opening 23 – 41 16 – 28 Passive opening 42 – 66 29 – 46 Passive opening 67 – 100 47 – 69 Passive opening 101 – 143 70 – 99 231 – 290 Passive opening 144 – 195 100 – 135 Passive opening w/motorized damper 196 – 258 136 – 179 Passive (see IFGC Appendix E, Worksheet E‐1)Size and type Other, describe: Table 501.4.2 Makeup Air Opening Sizing Table for New and Existing Dwelling Units Powered makeup air >419 >290 Combustion air Not required per mechanical code (No atmospheric or power vented appliances) Passive opening w/motorized damper 259 – 332 180 – 230 Passive opening w/motorized damper 333 – 419 IFGC Appendix E, Worksheet E‐1 Residential Combustion Air Calculation Method (for Furnace, Boiler, and/or Water Heater in the Same Space) Step 1: Complete vented combustion appliance information. Furnace/Boiler: Draft Hood Fan Assisted Direct Vent Input: Btu/hr or Power Vent Water Heater: Draft Hood Fan Assisted Direct Vent Input: Btu/hr or Power Vent Step 2: Calculate the volume of the Combustion Appliance Space (CAS) containing combustion appliances. The CAS includes all spaces connected to one another by code compliant openings. CAS volume: ft3 L x W x H L W H Step 3: Determine Air Changes per Hour (ACH)1 Default ACH values have been incorporated into Table E‐1 for use with Method 4b (KAIR Method). If the year of construction or ACH is not known, use method 4a (Standard Method). Step 4: Determine Required Volume for Combustion Air. (DO NOT COUNT DIRECT VENT APPLIANCES) 4a. Standard Method Total Btu/hr input of all combustion appliances Input: Btu/hr Use Standard Method column in Table E‐1 to find Total Required TRV: ft3 Volume (TRV) If CAS Volume (from Step 2) i s gr ea t er th an TRV then no outdoor openings are needed. If CAS Volume (from Step 2) i s less than TRV then go to STEP 5. 4b. Known Air Infiltration Rate (KAIR) Method (DO NOT COUNT DIRECT VENT APPLIANCES) Total Btu/hr input of all fan-assisted and power vent appliances Input: Btu/hr Use Fan‐Assisted Appliances column in Table E‐1 to find RVFA: ft3 Required Volume Fan Assisted (RVFA) Total Btu/hr input of all Natural draft appliances Input: Btu/hr Use Natural draft Appliances column in Table E‐1 to find RVNFA: ft3 Required Volume Natural draft appliances (RVNDA) Total Required Volume (TRV) = RVFA + RVNDA TRV = + = TRV ft3 Step 5: Calculate the ratio of available interior volume to the total required volume. Ratio = CAS Volume (from Step 2) divided by TRV (from Step 4a or Step 4b) Ratio = / = Step 6: Calculate Reduction Factor (RF). RF = 1 mi nus Ratio RF = 1 ‐ = Step 7: Calculate single outdoor opening as if all combustion air is from outside. Total Btu/hr input of all Combustion Appliances in the same CAS Input: Btu/hr (EXCEPT DIRECT VENT) Combustion Air Opening Area (CAOA): Total Btu/hr d i vid ed by 3000 Btu/hr per in2 CAOA = / 3000 Btu/hr per in2 = in2 Step 8: Calculate Minimum CAOA. Minimum CAOA = CAOA multiplied by RF Minimum CAOA = x = in2 Step 9: Calculate Combustion Air Opening Diameter (CAOD) CAOD = 1.13 m ultiplied by the sq uare root of Minimum CAOA CAOD = 1.13 √ Minimum CAOA = in. diameter go up one inch in size if using flex duct 1 If desired, ACH can be determined using ASHRAE calculation or blower door test. Follow procedures in Section G304. Directions ‐ The Minnesota Fuel Gas Code method to calculate to size of a required combustion air opening, is called the Known Air Infiltration Rate Method. For new construction, 4b of step 4 is required to be filled out. 1994 to present Pre‐1994 1994 to present Pre‐1994 5,000 250 375 188 525 263 10,000 500 750 375 1,050 525 15,000 750 1,125 563 1,575 788 20,000 1,000 1,500 750 2,100 1,050 25,000 1,250 1,875 938 2,625 1,313 30,000 1,500 2,250 1,125 3,150 1,575 35,000 1,750 2,625 1,313 3,675 1,838 40,000 2,000 3,000 1,500 4,200 2,100 45,000 2,250 3,375 1,688 4,725 2,363 50,000 2,500 3,750 1,675 5,250 2,625 55,000 2,750 4,125 2,063 5,775 2,888 60,000 3,000 4,500 2,250 6,300 3,150 65,000 3,250 4,875 2,438 6,825 3,413 70,000 3,500 5,250 2,625 7,350 3,675 75,000 3,750 5,625 2,813 7,875 3,938 80,000 4,000 6,000 3,000 8,400 4,200 85,000 4,250 6,375 3,188 8,925 4,463 90,000 4,500 6,750 3,375 9,450 4,725 95,000 4,750 7,125 3,563 9,975 4,988 100,000 5,000 7,500 3,750 10,500 5,250 105,000 5,250 7,875 3,938 11,025 5,513 110,000 5,500 8,250 4,125 11,550 5,775 115,000 5,750 8.625 4,313 12,075 6,038 120,000 6,000 9,000 4,500 12,600 6,300 125,000 6,250 9,375 4,688 13,125 6,563 130,000 6,500 9,750 4,875 13,650 6,825 135,000 6,750 10,125 5,063 14,175 7,088 140,000 7,000 10,500 5,250 14,700 7,350 145,000 7,250 10,875 5,438 15,225 7,613 150,000 7,500 11,250 5,625 15,750 7,875 155,000 7,750 11,625 5,813 16,275 8,138 160,000 8,000 12,000 6,000 16,800 8,400 165,000 8,250 12,375 6,188 17,325 8,663 170,000 8,500 12,750 6,375 17,850 8,925 175,000 8,750 13,125 6,563 18,375 9,188 180,000 9,000 13,500 6,750 18,900 9,450 185,000 9,250 13,875 6,938 19,425 9,713 190,000 9,500 14,250 7,125 19,950 9,975 195,000 9,750 14,625 7,313 20,475 10,238 200,000 10,000 15,000 7,500 21,000 10,500 205,000 10,250 15,375 7,688 21,525 10,783 210,000 10,500 15,750 7,875 22,050 11,025 215,000 10,750 16,125 8,063 22,575 11,288 220,000 11,000 16,500 8,250 23,100 11,550 225,000 11,250 16,875 8,438 23,625 11,813 230,000 11,500 17,250 8,625 24,150 12,075 1. The 1994 date refers to dwellings constructed under the 1994 Minnesota Energy Code. The default KAIR used in this section of the table is 0.20 ACH. 2. This section of the table is to be used for dwellings constructed prior to 1994. The default KAIR used in this section of the table is 0.40 ACH. IFGC Appendix E, Table E‐1 Residential Combustion air (Required Interior Volume Based on Input Rating of Appliance) Input Rating (Btu/hr) Standard Method Known Air Infiltration Rate (KAIR) Method (cu ft) Fan Assisted or Power Vent Natural Draft