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APPROVED BLD BLD2021-1102+Energy_Calculations+8.9.2021_10.52.20_AM+2346258RECEIVED BLD2021-1102 8-13-21 2018 Washington State Energy Code — Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Family — New & Additions (effective February 1, 2021) CITY OF EDMONDS DEVELOPMENT SERVICES DEPART SI? requirements apply to all IRC building types, including detached one- and two-family dwellings and multiple single-family dwellings (townhouses). Project Information Contact Information Adamant Homes- Plan 707 2818 s ft MIKE JOHNSON- mike@nash-architects.com 05-10-21 Instructions: This single-family project will use the requirements of the Prescriptive Path below and CV 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. O O Provide all information from the following tables as building permit drawings: Table R402.1- Insulation and J N Fenestration Requirements by Component, Table R406.2 - Fuel Normalization Credits and 406.3 - Energy Cre-dits. Authorized Representative Date 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 Glazed Fenestration SHGC b,e n/a n/a Ceiling 2 49 i 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 dfR-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- or joist -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. co CID 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: 3 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: 6 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 Heating Credits - select ONE Options Fuel Normalization Descriptions heating option 1 Combustion heating minimum NAECAb 0.0 ❑ 2 Heat pump` 1.0 0 3 Electric resistance heat only - furnace or zonal -1.0 ❑ 4 DHP with zonal electric resistance per option 3.4 0.5 ❑ 5 All other heating systems -1.0 ❑ Credits - select ONE Energy Options Energy Credit Option Descriptions energy option from each p category 1.1 I> 71oouNN2 oo0e®oe 0.5 ❑ 1.2 Efficient Building Envelope 1.0 ❑ User Notes 1.3 Efficient Building Envelope 0.5 0 1.4 I Efficient Building Envelope 1 1.0 ❑ 1.5 Efficient Building Envelope 2.0 ❑ 1.6 Efficient Building Envelope 3.0 ❑ 1.7 Efficient Building Envelope 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 2.0 ❑ 3.1- High Efficiency HVAC 1.0 3.2 High Efficiency HVAC 1.0 O 3.3- High Efficiency HVAC 1.5 O 3.4 High Efficiency HVAC 1.5 O 3.5 High Efficiency HVAC 1.5 3.61 High Efficiency HVAC 2.0 O 4.1 High Efficiency HVAC Distribution System 0.5 ❑ 4.2 High Efficiency HVAC Distribution System 1.0 0 Prescriptive Path - Single Family 2018 Washington State Energy Code-R 2 2018 Washington State Energy Code — Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Famille— New & Additions (effective February 1, 2021) Summary of Table R406.2 (cont.) Energy Credits - select ONE Options Energy Credit Option Descriptions (cont.) energy option from User Notes d each category 5.1d Efficient Water Heating 0.5 ❑ 5.2 Efficient Water Heating 0.5 ❑ 5.3 Efficient Water Heating 1.0 ❑ 5.4 Efficient Water Heating 1.5 ❑ 5.5 Efficient Water Heating 2.0 0 5.6 Efficient Water Heating 2.5 ❑ 6.1e Renewable Electric Energy (3 credits max) 1.0 0 7.1 Appliance Package 0.5 ❑ Total Credits 16.01 1 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. Please print only pages 1 through 3 of this worksheet for submission to your building official. Prescriptive Path — Single Family 2018 Washington State Energy Code-R 3 _- ININEENE MINE ININ■EN■ ME ©■ M■ ©E simple cleating 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. Project Information Contact Information Plan 707 Heating System Type: O 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) Lynnwood AT = Indoor (70 degrees) - Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area (sq ft) 2,818 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height (ft) 9.0 25,362 Glazing and Door U-Factor X Area = UA Instructions 0.280 506 141.68 Skylights U-Factor X Area = UA Instructions 0.50 Insulation Attic U-Factor X Area = UA Instructions R-49 IV 0.026 1,920 49.92 Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA Instructions No Vaulted Ceilings in this project. VJ --- Above Grade Walls (see Figure 1) U-Factor X Area UA Instructions R-21 Intermediate � 0.056 2,900 162.40 Floors U-Factor X Area UA Instructions 0.025 1,920 48.00 Below Grade Walls (see Figure 1) U-Factor X Area UA Instructions No Below Grade Wails in this project. T I I 0.028 j Slab Below Grade isee Floure t) F-Factor X Length UA Instructions mmmWSelect conditia nrn g i No selection --- Slab on Grade (see Figure 1) F-Factor X UA Instructions LNo Slab an Grade in this project. --- Location of Ducts Instructions k—landitioned Duct Leakage Coefficient Spare 1.00 Sum of UA 402.00 Figure 1. Above Grade 46 Envelope Heat Load 18,492 Btu / Hour Sum of UA x AT Air Leakage Heat Load 12,600 Btu / Hour Volume x 0.6 x AT x 0.018 Building Design Heat Load 31,092 Btu / Hour Air leakage + envelope heat loss Building and Duct Heat Load 31,092 Btu / Hour Ducts in unconditioned space: sum of building heat loss x 1.10 Ducts in conditioned space: sum of building heat loss x 1 Maximum Heat Equipment Output 38,865 Btu / Hour Building and duct heat loss x 1.40 for forced air furnace Building and duct heat loss x 1.25 for heat pump (07101113)