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REVIEWED BLD2022-0529+Energy_Calculations+4.27.2022_7.14.09_PM+28322892018 Washington State Energy Code — Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Familv — New & Additions (effective February 1.2021) 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 Reinke Residence JBIake Bethards Bethards Architecture & Design 310-463-1013 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 All Climate Zones (Table 11402.1.1) Date 04/22/2022 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- 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. 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 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 ❑ 5 All other heating systems Energy Credit Option Descriptions -1.0 Credits - select energy option category ❑ 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 0 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 0 2.3 Air Leakage Control and Efficient Ventilation 1.5 ❑ 2.4 Air Leakage Control and Efficient Ventilation Li 2.0 ❑ 3. la High Efficiency HVAC 1.0 0 3.2 High Efficiency HVAC 1.0 ❑ 3.3a High Efficiency HVAC 1.5 ❑ 3.4 High Efficiency HVAC 1.5 ❑ 3.5 High Efficiency HVAC 1.5 ❑ 3.6a High Efficiency HVAC 2.0 ❑ 4.1 High Efficiency HVAC Distribution System 0.5 0 4.2 High Efficiency HVAC Distribution System 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 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 ❑ 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 3.0 Calculate Total 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. Prescriptive Path - Single Family 2018 Washington State Energy Code-R 3 Alterations Worksheet - 2018 Washington State Energy Code Project Information Contact Informatior Reinke Remodel + Addition Blake Bethards Bethards Architecture + Design Blake@bethardsarchitecture.com The WSEC requirements for alterations are located in Chapter 5 of the code text. Alterations (remodels) do not need to obtain energy credits from Table R406.3 Additions must meet the requirements for new construction. This includes nonconditioned space being altered to become conditioned space. Will the wall cavities be exposed? R Yes r- No If yes: Exposed wall cavities must be insulated - 2 X 4 wall studs require R-15 insulation 2 X 6 wall studs require R-21 insulation Will the roof/ceiling framing cavities or attic be exposed? Fv— Yes F- No If yes: Exposed roof/ceiling assemblies must be insulated - Vaulted ceilings: Insulate to the full depth of the framing member while allowing for the minimum 1" ventilated space Flat ceilings: Install R-49 insulation or what the attic space can accommodate based on the roof pitch Will the floor framing cavities be exposed? Fv Yes F No If yes: Exposed floor cavities must be insulated to R-30 Are the windows and/or doors being replaced? F Yes Fv- No (includes both window or door and frames) If yes: New windows and doors must have an area weighted average U-factor of <_0.30 Will the heating or cooling system be replaced? F- Yes R- No If yes: New equipment must meet current requirements and ducts need to be tested Will the hot water system be altered? F Yes 1v No If yes: New water heating equipment must meet current code requirements Are more than 50% of the light fixtures being changed? F Yes 1v No If yes: 90% of all lamps must be high efficacy (LED or CFL) R503.1.1 Building envelope. Building envelope assemblies that are part of the alteration shall comply with Section R402.1.1 or R402.1.4, Sections R402.2.1 through R402.2.11, R402.3.1, R402.3.2, R402.4.3 and R402.4.4. Exception: The following alterations need not comply with the requirements for new construction provided the energy use of the building is not increased: 1. Storm windows installed over existing fenestration. 2. Existing ceiling, wall or floor cavities exposed during construction provided that these cavities are filled with insulation. 2x4 framed walls shall be insulated to a minimum of R-15 and 2x6 framed walls shall be insulated to a minimum of R-21. 3. Construction where the existing roof, wall or floor cavity is not exposed. 4. Roof recover. 5. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing. 6. Surface -applied window film installed on existing single pane fenestration assemblies to reduce solar heat gain provided the code does not require the glazing fenestration to be replaced. R503.1.1.1 Replacement fenestration. Where some or all of an existing fenestration unit is replaced with a new fenestration product, including sash and glazing, the replacement fenestration unit shall meet the applicable requirements for U-factor and SHGC in Table R402.1.1. Where more than one replacement fenestration unit is being installed, an area -weighted average of the U-factor and SHGC of all replacement fenestration shall be permitted to be used to demonstrate compliance. R503.1.2 Heating and cooling systems. New heating, cooling and duct systems that are part of the alteration shall comply with Section R403. Exceptions: 1. Where ducts from an existing heating and cooling system are extended, duct systems with less than 40 linear feet in unconditioned spaces shall not be required to be tested in accordance with Section R403.2.2. 2. Existing duct systems constructed, insulated or sealed with asbestos. R502.1.1.2 Heating and cooling systems. New heating, cooling and duct systems that are part of the addition shall comply with Section R403. Exception: The following need not comply with the testing requirements of Section R403.3.3: 1. Additions of less than 750 square feet. 2. Duct systems that are documented to have been previously sealed as confirmed through field verification and diagnostic testing in accordance with procedures in WSU RS-33. 3. Ducts with less than 40 linear feet in unconditioned spaces. 4. Existing duct systems constructed, insulated or sealed with asbestos. R503.1.3 Service hot water systems. New service hot water systems that are part of the alteration shall comply with Section R403.5. R503.1.4 Lighting. New lighting systems that are part of the alteration shall comply with Section R404.1. Exception: Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power. R503.2 Change in space conditioning. Any nonconditioned or low -energy space that is altered to become conditioned space shall be required to be brought into full compliance with this code. Window, Skylight and Door Schedule Project Information Reinke Remodel + Addition Ref. U-factor Exempt Swinging Door (24 sq. ft. max.) Exempt Glazed Fenestration (15 sq. ft. max.) Vertical Fenestration (Windows and doors) Component Descrintion Ref. U-factor MILGARD 6210 OR EQUIV. W2 0.30 MILGARD 6210 OR EQUIV. W3 0.30 MILGARD 6210 OR EQUIV. W4 0.30 MILGARD 6210 OR EQUIV. W5 0.30 MILGARD 6210 OR EQUIV. W6 0.30 MILGARD 6210 OR EQUIV. W7 0.30 MILGARD 6210 OR EQUIV. W8 0.30 MILGARD 6210 OR EQUIV. W9 0.30 MILGARD 6210 OR EQUIV. W10 0.30 MILGARD 6210 OR EQUIV. W11 0.30 EXTERIOR ENTRY DOOR A 0.30 GARAGE ENTRY DOOR B 0.35 ROOF DECK DOOR E 0.30 GARAGE DOORS J 0.28 Contact Information Blake Bethards 310-463-1013 blake@bethardsarchitecture.com Width Height Qt. Feet Inch Feet Inch Width Height Ot. Feet Inch Feet Inch --M-� NE©©ENO MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME MMEME --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ --■-■ Area UA 11 111 11 111 I_�1�IL'1 11 111 •1 ' 1 • 1 � :1 • 1 � :1 •1 ' 1 ' 1 11 111 1 1 11 1 1 11 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 11 111 Overhead Glazing (Skylights) Component Sum of Vertical Fenestration Area and UA Vertical Fenestration Area Weighted U = UA/Area Ket. u-tactor Width Height Qt. Feet Inch Feet Inch 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) 412.8 122.55 0.30 Area UA 412.8 122.55 Simple Heating System Size: Washington State heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and ACCA Manuals J 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 Reinke Remodel+Addition M Blake Bethards 310-463-1013 blake@bethardsarchitecture.com Heating System Type: 0 All other systems 0 Heat Pump To see detailed instructions for each section, place your cursor on the word 'Instructions" Design Temperature Instructions Design Temperature Difference (AT) Edmonds AT = Indoor (70 degrees) - Outdoor Design Temp Area of Buildinq Conditioned Floor Area Instructions Conditioned Floor Area (sq ft) 995 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height (ft) 8.0 7,960 Glazing and Doors U-Factor X Area = UA Instructions 1 0.280 273 76.44 Skylights U-Factor X Area = UA Instructions 0.50 F-0-1 --- Insulation Attic U-Factor X Area = UA Instructions R-49 I � J 0.026 787 20.46 Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA Instructions R-49 Advanced I 0.020 51 1.02 J Above Grade Walls (see Figure 1) U-Factor X Area UA Instructions R-21 Intermediate � I 0.056 1,055 59.08J Floors U-Factor X Area UA Instructions — I 0.025 602 15.05 R38 � J Below Grade Walls (see Figure 1) U-Factor X Area UA Instructions � No Below Grade Walls in I 0.028 0� this project. J Slab Below Grade (see Figure 1) F-Factor X Length UA Instructions — I No Slab Below Grade in � 0.303 � --- this project. Slab on Grade (see Figure 1) F-Factor X Length UA Instructions 0.540 40 21.60 R-10 Perimeter Location of Ducts Instructions j Duct Leakage Coefficient 1 Conditioned Space L 1.00 Sum of UA 193.65 Figure 1. Above Grade 46 Envelope Heat Load 8,908 Btu / Hour Sum of UA x AT Air Leakage Heat Load 3,955 Btu / Hour Volume x 0.6 x AT x 0.018 Building Design Heat Load 12,863 Btu / Hour Air leakage + envelope heat loss Building and Duct Heat Load 12,863 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 18,008 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 (07/01/13)