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REVIEWED BLD2023-0562+Energy_Calculations+4.14.2023_5.51.18_PM+3485077RECEIVED BLD2023-0562 5/23/23 ................ .............. REVIEWED BY CITY OF EDMONDS CITY OF EDMONDS DEVELOPMENT :BUILDING DEPARTMENT; 2018 Washington �} � State Energy SERVICES DEPARTMENT Code Residential EnergyPrescriptive Code Compliance for All Chmate Zones in Washington Single Family, New & Additions These requirements apply to all IRC building types, including detached one- and two-family dwellings and multiple single-family dwellings(townhouses). Project Information Instructions:l`hrs 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. Con to ct I forma tine Provide all information from the following tales as building permit drawings; Table R40Z.1- Insulation and Fenestration Requirements by Component, Table R406-2 - Fuel Normalization Credits and 406.3 - Energy Credits. Authorized Representative � rf11*2&A jr, 1 TDQte T f F Fenestration U-Fa Ctor b Skylight U-Factor b i All Climate Zones Table 4 .1J -Value na n/a U-17actor a n/a - Ceiling49 - - - 0.026 Wood Frame ball 9� rr t - t _ _ _ .5 Floor - 30 0.029 -- - Below�`�� ball ��� 1 11 it + 04042 Slab R-Value u� Depth - - - I� �R-values —valuesare rinirum-factorsand SHGC are •+ � • -- - - - When Ir1l.� Latin i Ir�-��tall�� III a aV�t � that � less a than the label or design thickness of the i nu Iatin the cF nn�r�� �-a1� of the insulation from Appendix Table A101.4 shall not he lessthan the -Vaiue ifi �d ire � � he table, b The fenestration -ftr column excludes li # - - - - 1 1 1 +STB" means R-10 continuous insulation on — _ - t t rr the aII, r R 15 continuous insulation on the interior of the wall, or - 1 cavity insulation plu a thermal break between the lab and the basement wall at c the interior of the pant 11. '�1���� +�T��' shall � ��- ' - perm t � met with �-1 cavity r� the Interior of the basement al plus R-5 continuous nuo u insulation 1� " � u Latin �n the interior �r Dt�rl�l" �f t� wall. T'� Means -5 thermal break between floor Slab and basement _wall. A R-1-cont!nuou -insulation is r aired under heated slab - _ n ra floo-rs.See Section R4. t.1.For in l rafter- or joi t-vauIted c ilin , th in u- lation rna b r ---- -insulation � �� u�� t - if tl�� full rr�su late n depth extends tfatfthe tri wall. -7.5 continuous insulation installed o-� over existing I I emed to h equivalent t the required ireperimeter f lad insulation � � tion when applied t existing slabs complyingwith Section 50 1.1. If foam plastic is used, it shall meet the r equi rem ent for th er ma I ba rriers p rotecti ng foa For log structures developed i n corn I a n ce with t - � ar��a�� l �� l� a III ha11 rn�climate zone 5 of ICC 400, �t the requirements � � nts for lnt. (interdiate fram in d enot � - -_ ._ iSection - — - -- fra in a nd in uIati n a de cribed n a ti n 1� inluding tandar . h framing 1 inches I� center, �� �f the mall cavity ir�� i u late and headr i nulatd with a minimum of R-10 insulation. Prescriptive Path — Single Family 01 Washington State Energy Code-F 1 2018 Washington State Energy Cade - Residential Prescriptive Energy [ode 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 shill specify the option selected and the maximum tested building air leakage, and show the qualifying ventilation system and its control sequence of operation, 1. z. 3. 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. Medium Dwelling Unit: 6 credits All dwelling units that are not included in #1 or #3 Large Dwelling Unit: 7 credits Dwelling units exceeding S,000 sf of conditioned floor area Additions less than 500 square feet: 1.5 credits All other additions shall meet 1-3 above Before selecting your credits on this ummar table,review the details d 6-- Summary of Table R406.2 Heating' Fuel lrrliti Credits - select GIVE tip ripti o n optionheating OmOu tion heating minimiA - - - - - - - - a -- _- -- E .0 E Heat P u rrr p c - - 1.0 -- - .- 3. Electric resistance beat only - furnace or zonal -1. --- DHP with zonal electric resistance r do .4 --�-0.5 �- Il other heating stems _ . Energy Credits -s elect'O Options Energy Credit Option Descriptions energy option from - - - -- - - - - - _ cator 1.1 'Efficient Building EnvelopeOm5 -- 1.2 Efficient Building Envelope _ 1. Efficient BuildingEnv elope --- - �_ 1.4 Efficient �,iling r�l - -- - - - _ - - 1.0 I EfficiILW- -rt Building Envelope 1. 1 Efficient Buil-d-Ing Envelope 1.7 Efficient Building Envelope - -- .1 Air Leakage Control and Efficient Ventilation . Air Leakage Control and EfficientVentilation - - - --- nt� �atr�n .3 'Air -Leakage Cuntrol and Efficient Ventilation .a l air Leakage Control and Efficient Ventilation High Effide-ncy-HVAC High Efficiency HVAC i High Efficiency HVAC High Efficiency HVAC . F t .o r .5 _ 1. 1.5 F1 .o 1.0 ❑ 1.5 ❑ 1.5 ❑ -. 'High Efficiency H ---- - 1. .,3 High Efficiency H . - �- .1 _ High Efficiency HVAC Distribution System 0.5 4.2 High Efficiency HVAC Distribution System _. 1.0 Prescriptive Path - Single Family 2018 Washington State Energy od User Notes 2 Energy Options I, a M b. C. d. e. 2018 Washington State Energy Code — Residential Prescriptive Energy Code Compliance for All Climate Zones in Washington Single Family — New & Additions (effective February 1, 2021) -- Summary of Table R4 . (coat.) Credits - select ONE Energy Credit Option Descriptions (cont.) energy ti n from 5. Efficient Water e- Heating 5.2 Efficient Water Heating 543.Efficient Water Heating _SA Efficient Water Heating — -- each ctgr 0.5 0. 1. E] 1.5 El User Motes .5 Efficient Water Heating . 5.6 Efficient Water Heating - .le Renewable Electric Energy (3 credits ma) 1.0 .1 Appliance Package 0.5- Totcd Credits I 0--pi CLEAR FORM n alternative heating source id at a maximum of 0.5 i — --- W/sf (equivalent) of heated floor area or 500 1 , whichever is bigger, may be installed in the dwelling unit. Equipment listed in Table 4.t(4) or 40t.(5) Equipment listed in Table 4 . . (l) or 40 . # ( ) You cannot select more than one option from any category EXCEPT in category with options 5.2 thorough 5.6. See Table 406.3. 1.0 credit for each 1,200 kWh of electrical generationpr id d annual) �uto 3 credits ma. See the complete Table R406.2 for all requirements and option descriptions. Please print only gages 1 through 3 of this worksheet for submission to your building official. Prescriptive Path — Single Family 2018 Washington State Energy Cod -F K Alterations Worksheet - 2018 Washington State Energy Code PYrliar•f infntir„- F I f fror I I t% .. - j. - - L r. - r I . 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. altered to become conditioned space. This includes nonconditfaned space being Will the wall cavities be exposed? �-- Yes No If yes: Exposed wail 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? I' Yes If yes: Exposed roof/ceiling assemblies must be insulated - Vaulted ceilings: ./Ilat ceilings. - Will the floor framing cavities be exposed? I' N o Insulate to the full depth of the framing member while allowing for the minimum 1"ventilated space Install R-49 insulation or what the attic space can accommodate based on the roof pitch Yes If yes: Exposed floor cavities mast be insulated to R-30 Are the windows and/or doors being replaced? XYes Oncludes both window or door and frames} r No F ND It yes: New windows and doors must have an area weighted average U-factor of s0.30 Will the heading or cooling system be replaced? F Yes XNa If yes: New equipment must meet current requirements and ducts need to be tested Will the hot water system be altered? If yes: F Yes ,vNo New water heating equipment must meet current code requiremenis Are more than 50% of the light fixtures being changed? If yes: 75% of all lamps must be high efficacy (LED or CFL) r Yes N o