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REVIEWED BLD2023-1028+Energy_Calculations+8.14.2023_12.19.45_PM+37239522018 Washington State Energy Code — Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Familv — New & Additions (effective February 1.2021) Version 1.2 These requirements apply to all IRC building types, including detached one- and two-family dwellings and multiple single-family dwellings (townhouses). Project Information Contact Information CURRY RESIDENCE ADDITION SIALER DESIGN, LLC 19804 86TH PL W, EDMONDS, WA 98026 1 16008 MOTOR PL, LYNNWOOD, WA 98087 Instructions: This single-family project will use the requirements of the Prescriptive Path below and incorporate the minimum values listed. Based on the size of the structure, the appropriate number of additional credits are checked as chosen by the permit applicant. Provide all information from the following tables as building permit drawings: Table R402.1- Insulation and Fenestration Requirements by Component, Table R406.2 - Fuel Normalization Credits and 406.3 - Energy Credits. Authorized Representative LUIS F. SIALER Date 08/01/2023 All Climate Zones (Table R402.1.1) R-Value a U-Factor a Fenestration U-Factor b n/a 0.30 Skylight U-Factor b n/a 0.50 n/a n/a Glazed Fenestration SHGC b,e Ceiling B 49 0.026 Wood Frame Wall g,h 21 int 0.056 Floor 30 0.029 Below Grade Wall `,h 10/15/21 int + TB 0.042 Slab d,f R-Value & Depth 10, 2 ft n/a R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity that is less a than the label or design thickness of the insulation, the compressed R-value of the insulation from Appendix Table A101.4 shall not be less than the R-value specified in the table. The fenestration U-factor column excludes skylights. b "10/15/21 +5TB" means R-10 continuous insulation on the exterior of the wall, or R-15 continuous insulation on the interior of the wall, or R-21 cavity insulation plus a thermal break between the slab and the basement wall at c the interior of the basement wall. "10/15/21 +5TB" shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall. "5TB" means R-5 thermal break between floor slab and basement wall. d R-10 continuous insulation is required under heated slab on grade floors. See Section R402.2.9.1. For single rafter- orjoist-vaulted ceilings, the insulation may be reduced to R-38 if the full insulation depth e extends over the top plate of the exterior wall. R-7.5 continuous insulation installed over an existing slab is deemed to be equivalent to the required perimeter f slab insulation when applied to existing slabs complying with Section R503.1.1. If foam plastic is used, it shall meet the requirements for thermal barriers protecting foam plastics. For log structures developed in compliance with Standard ICC 400, log walls shall meet the requirements for g climate zone 5 of ICC 400. Int. (intermediate framing) denotes framing and insulation as described in Section A103.2.2 including standard h framing 16 inches on center, 78% of the wall cavity insulated and headers insulated with a minimum of R-10 insulation. Prescriptive Path — Single Family 2018 Washington State Energy Code-R 2018 Washington State Energy Code - Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Family - New & Additions (effective February 1, 2021) Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 (fuel normalization credits) and Table 406.3 (energy credits) to achieve the following minimum number of credits. To claim this credit, the building permit drawings shall specify the option selected and the maximum tested building air leakage, and show the qualifying ventilation system and its control sequence of operation. 1. Small Dwelling Unit: ) credits Dwelling units less than 1,500 sf in conditioned floor area with less than 300 sf of fenestration area. Additions to existing building that are greater than 500 sf of heated floor area but less than 1,500 sf. 2. Medium Dwelling Unit: o credits All dwelling units that are not included in #1 or #3 3. Large Dwelling Unit: 7 credits Dwelling units exceeding 5,000 sf of conditioned floor area 4. Additions less than 500 square feet: 1.5 credits All other additions shall meet 1-3 above Before selecting your credits on this Summary table, review the details in Table 406.3 (Single Family), on page 4 Summary of Table R406.2 and 406.3 Heating Credits - select ONE O tions Fuel Normalization Descriptions heating option User Notes P 1 Combustion heating minimum NAECAb 0.0 ❑ 2 Heat pump` 1.0 3 Electric resistance heat only - furnace or zonal -1.0 ❑ 4 DHP with zonal electric resistance per option 3.4 0.5 -1.0 Credits - select energy option category ❑ 5 All other heating systems Energy Credit Option Descriptions ❑ ONE from each Energy Options p 1.1 Efficient Building Envelope 0.5 ❑ 1.2 Efficient Building Envelope 1.0 ❑ 1.3 Efficient Building Envelope 0.5 1.4 Efficient Building Envelope 1.0 ❑ 1.5 Efficient Building Envelope 2.0 ❑ 1.6 Efficient Building Envelope 3.0 ❑ 1.7 Efficient Building Envelope El 0.5 ❑ 2.1 Air Leakage Control and Efficient Ventilation 0.5 ❑ 2.2 Air Leakage Control and Efficient Ventilation 1.0 ❑ 2.3 Air Leakage Control and Efficient Ventilation 1.5 ❑ 2.4 Air Leakage Control and Efficient Ventilation Li 2.0 ❑ 3.1a High Efficiency HVAC 1.0 ❑ 3.2 High Efficiency HVAC 1.0 ❑ 3.3a High Efficiency HVAC 1.5 ❑ 3.4 High Efficiency HVAC 1.5 3.5.1 High Efficiency HVAC 1.5 ❑ 3.5.2 High Efficiency HVAC 1.5 ❑ 3.6a High Efficiency HVAC 2.0 ❑ 4.1 High Efficiency HVAC Distribution System 0.5 ❑ 4.2 High Efficiency HVAC Distribution System Lj 1.0 ❑ Prescriptive Path - Single Family 2018 Washington State Energy Code-R 2018 Washington State Energy Code — Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single FamilX— New & Additions (effective February 1, 2021) Summary of Table Energy Credit Option Descriptions (cont.) Efficient Water Heating Efficient Water Heating Efficient Water Heating Efficient Water Heating R406.2 (cont.) Energy Options Credits - select ONE energy option from each category d 0.5 ❑ 5.1d 5.2 0.5 ❑ 5.3 1.0 ❑ 5.4 1.5 ❑ 5.5 Efficient Water Heating 2.0 ❑ 5.6 Efficient Water Heating 2.5 ❑ 6.1e Renewable Electric Energy (3 credits max) 1.0 Q 7.1 Appliance Packaee 0.5 ❑ User Notes Total Credits 1 1 3.0 IlCalculate Totall I Clear Form a. An alternative heating source sized at a maximum of 0.5 W/sf (equivalent) of heated floor area or 500 W, whichever is bigger, may be installed in the dwelling unit. b. Equipment listed in Table C403.3.2(4) or C403.3.2(5) c. Equipment listed in Table C403.3.2(1) or C403.3.2(2) d. You cannot select more than one option from any category EXCEPT in category S. Option 5.1 may be combined with options 5.2 through 5.6. See Table 406.3. e. 1.0 credit for each 1,200 kWh of electrical generation provided annually, up to 3 credits max. See the complete Table R406.2 for all requirements and option descriptions. f. Use the single radiobutton in the upper right of the second column to deselect radiobuttons in that group. Please print only pages 1 through 3 of this worksheet for submission to your building official. For Building Officials Only Prescriptive Path — Single Family 2018 Washington State Energy Code-R 3 Window, Skylight and Door Schedule Project Information CURRY RESIDENCE ADDITION 19804 86TH PL W EDMONDS, WA 98026 Ref. U-factor Exempt Swinging Door (24 sq. ft. max.) Exempt Glazed Fenestration (15 sq. ft. max.) Vertical Fenestration (Windows and doors) Component Description Ref. U-factor W01 10.28 W02 0.28 W03 0.28 Contact Information SIALER DESIGN, LLC 16008 MOTOR PL LYNNWOOD, WA 98087 Width Height Qt. Feet inch Feet Inch Area UA Width Height ut. reet reet Sum of Vertical Fenestration Area and UA Vertical Fenestration Area Weighted U = UA/Area Overhead Glazing (Skylights) Component Width Height Description Ref. U-factor Qt. Feet nch Feet 1-h Sum of Overhead Glazing Area and UA Overhead Glazing Area Weighted U = UA/Area Total Sum of Fenestration Area and UA (for heating system sizing calculations) 0.01 0.00 0.01 0.00 Area UA 58.01 16.24 0.28 Area UA 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.00 58.0 16.24 Simple heating System Size: wasnington State This heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and ACCA Manuals J and S. This tool will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to determine cooling loads. Please complete the green drop -downs and boxes that are applicable to your project. As you make selections in the drop -downs for each section, some values will be calculated for you. If you do not see the selection you need in the drop -down options, please contact the WSU Energy Program at energycode@energy.wsu.edu or (360) 956-2042 for assistance. Prnipct CURRY RESIDENCE ADDITION SIALER DESIGN, LLC 19804 86TH PL W 16008 MOTOR PL EDMONDS, WA98026 LYNNWOOD, WA98087 Heating System Type: Q All other Systems Heat Pump To see detailed instructions for each section, place your cursor on the word "Instructions" Design Temperature Instructions Design Temperature Difference (AT) Ed m o n d s Ell OT = Indoor (70 degrees) - Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area (sq ft) 470 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height (ft) 9.0 4,230 Glazing and Doors U-Factor X Area = UA Instructions U-0.28 -Ell J 0.280 59 16.38 Skylights U-Factor X Area = UA Instructions 0.50 --- Insulation Attic U-Factor X Area = UA Instructions Select R-Value Ell No selection 504 Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA inst, R-38 Vented Ell 0.027 470 12.69 Above Grade Walls (seeFigurep U-Factor X Area UA Instructions R-211ntermediate I 0.056 J 599 33.52 Floors U-Factor X Area UA Instruction, R-38 0.025 470 11.75 Below Grade Walls (see Figurel) U-Factor X Area UA Instructions Select R-value No selection --- Slab Below Grade (see Figure 1) F-Factor X Length UA Instructions Select conditioning I No selection J I --- Slab on Grade (see Figure1) F-Factor X Length UA Instructions Select R-Value EllJ No selection F --- Location of Ducts Instructions Duct Leakage Coefficient No Ducts 21.00 Sum of UA 74.34 Figure 1. Above Grade 46 Envelope Heat Load 3,419 Btu / Hour Sum ofUAxAT Air Leakage Heat Load 2,101 Btu/Hour Volume x 0.6 x AT x 0.018 Building Design Heat Load 5,521 Btu / Hour Air leakage + envelope heat loss Building and Duct Heat Load 5,521 Btu / Hour Ducts in unconditioned space: sum of building heat loss x 1.10 Ducts in conditioned space: sum of buildinq heat loss x 1 Maximum Heat Equipment Output 6,901 Btu / Hour Buildina and duct heat loss x 1.40 for forced air furnace Buildina and duct heat loss x 1.25 for heat oumo (07101113)