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2018 Washington State Energy Code - Residential
<br />Prescriptive Energy Code Compliance for All Climate Zones in Washington
<br />Single Family - New & Additions (effective February 1, 2021)
<br />Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 (fuel
<br />normalization credits) and Table 406.3 (energy credits) to achieve the following minimum number of
<br />credits. To claim this credit, the building permit drawings shall specify the option selected and the
<br />maximum tested building air leakage, and show the qualifying ventilation system and its control sequence
<br />of operation.
<br />1. Small Dwelling Unit:
<br />Dwelling units less than 1,500 sf in conditioned floor area with less than 300 sf of fenestration area.
<br />Additions to existing building that are greater than 500 sf of heated floor area but less thari 1,500 sf.
<br />2. Medium Dwelling Unit:
<br />All dwelling units that are not included in #1 or #3
<br />3. Large Dwelling Unit:
<br />Dwelling units exceeding 5,000 sf of conditioned floor area
<br />4. Additions less than 500 square feet:
<br />Before selecting your credits on this Summary table, review the details in Table 406.3 (Single Family), on page 4.
<br />Summary of Table R406.2
<br />Heating
<br />Options
<br />Fuel Normalization Descriptions
<br />Credits - select ONE
<br />heating option
<br />1
<br />Combustion heating minimum NAECAb
<br />0.0
<br />0
<br />2
<br />Heat pump`
<br />1.0
<br />❑
<br />3
<br />- - ---- -__.-
<br />Electric resistance heat only - furnace or zonal
<br />- , -
<br />i
<br />-1.0
<br />❑
<br />4
<br />DHP with zonal electric resistance per option 3.4
<br />0.5
<br />❑
<br />5
<br />-- - - --
<br />All other heating systems
<br />-1.0
<br />❑
<br />Energy
<br />Credits - select ONE
<br />Energy Credit Option Descriptions
<br />energy option from each
<br />Options
<br />P
<br />category
<br />1.1
<br />Efficient Building Envelope
<br />0.5
<br />❑
<br />1.2
<br />Efficient Building Envelope
<br />1.0
<br />❑ -
<br />1.3
<br />Efficient Building Envelope
<br />-
<br />0.5
<br />❑
<br />1.4
<br />Efficient Building Envelope
<br />1.0
<br />❑.
<br />1.5
<br />Efficient Building Envelope
<br />2.0
<br />❑
<br />1.6
<br />Efficient Building Envelope
<br />3.0
<br />❑
<br />-
<br />1.7
<br />Efficient Building Envelope
<br />-0
<br />0.5
<br />❑
<br />2.1�
<br />',Air Leakage Control and Efficient Ventilation
<br />0.5
<br />2.2
<br />!Air Leakage Control and Efficient Ventilation
<br />1.0-
<br />❑
<br />2.3
<br />Air Leakage Control and Efficient Ventilation
<br />1.5
<br />❑
<br />-
<br />2.4
<br />1 Air Leakage Control and Efficient Ventilation
<br />❑
<br />2.0
<br />❑
<br />_
<br />3.1a
<br />High Efficiency HVAC
<br />1.0 +-
<br />❑
<br />3.2
<br />--
<br />High Efficiency HVAC
<br />E
<br />1.0
<br />❑
<br />3.3
<br />High Efficiency HVAC_
<br />g
<br />1.5
<br />❑
<br />3.4
<br />High Efficiency HVAC
<br />1.5
<br />❑
<br />3.5
<br />High Efficiency HVAC -
<br />i
<br />1.5�
<br />❑
<br />3.6a
<br />High Efficiency HVAC
<br />2.0
<br />❑
<br />-
<br />4.1
<br />High Efficiency HVAC Distribution System_
<br />Q 5
<br />❑
<br />4.2
<br />High Efficiency HVAC Distribution System
<br />1.0
<br />❑
<br />Prescriptive Path - Single Family 2018 Washington State Energy Code-R
<br />User Notes
<br />2018 Washington State Energy Code - Residential
<br />Prescriptive Energy Code Compliance for All Climate Zones in Washington
<br />Single Family - New & Additions (effective February 1, 2021)
<br />2018 Washington State Energy Code - Residential
<br />Prescriptive Energy Code Compliance for All Climate Zones in Washington
<br />Single Family - New & Additions (effective February 1, 2021) Version 1.0
<br />Simple Heating System Size: Washington State
<br />This heating system sizing calculator is based on the Prescriptive Requirements of the 2018 Washington State Energy Code (WSEC) and ACCA Manuals J
<br />and S. This tool will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to determine cooling loads.
<br />Please complete the green drop-dcwns and boxes that are applicable to your project. As you make selections in the drop -downs for each section, some
<br />values will be calculated for you. If you do not see the selection you need in the drop -down options, please contact the W SU Energy Program at
<br />energycode@energy.wsu.edu or (360) 956-2042 for assistance.
<br />924105th Place SE i 206-283-8317
<br />Everett, Wash I
<br />(� All Other Systems Heat Pump
<br />To see detailed instructions for each section, place your cursor on the word 'Instructions"
<br />Design Temperature
<br />Window, Skylight and Door Schedule
<br />Project information Contact Information
<br />Van Patten RESIDENCE WILLIAM PAGE
<br />924 105th Place SE 206-283-8317
<br />Everett, Wash
<br />1 Ref._ U-factor
<br />-� Exempt Swinging Door (24 sq. ft. max.)
<br />Exempt Glazed Fenestration (15 sq. ft. max.) W03 50
<br />Instructions
<br />Design Temperature Difference (AT)
<br />49
<br />• Everett Pale Ar$
<br />r°
<br />r
<br />oT = Indoor tT0
<br />degrees) - Outdoor Design Temp
<br />Area a`
<br />Conditioned Floor Area
<br />Instruetlr,. -= Conditioned Floor Area (sq ft)
<br />75
<br />Average Ceiling Height
<br />Conditioned Volume
<br />go =Vwc oc IS Average Ceiling Height (ft)
<br />8.0
<br />600
<br />Glazing and Dom
<br />U-Factor
<br />-
<br />X Area -
<br />UA
<br />instructions
<br />.
<br />0.250
<br />14
<br />3.46
<br />Y v o.zs
<br />w
<br />Skylights
<br />U-Factor
<br />X Area =
<br />UA
<br />Instructions
<br />0.50
<br />16
<br />8.00
<br />Insulation
<br />Attic
<br />U-Factor
<br />X Area =
<br />UA
<br />suctions �sav �,
<br />.
<br />I 0.026
<br />}
<br />1 75 1
<br />1.95
<br />Single Rafter or Joist Vaulted Ceilings
<br />U-Factor
<br />X Area
<br />UA
<br />instructions .. ..._,
<br />�) No Vaulted Ceilings m this project.
<br />. �,
<br />'""
<br />�0
<br />Above Grade Walls (see Figure 1)
<br />U-Factor
<br />X Area
<br />UA
<br />inau"coons
<br />�&2t Int d to
<br />t rn_ l ¢ na a'+'m..
<br />`
<br />0.056
<br />148
<br />8.29
<br />Floors
<br />Ml�YAidIF'yet
<br />U-Factor
<br />X Area
<br />UA
<br />_
<br />�zructions a �$`�"`
<br />0.025
<br />148
<br />3.70
<br />Below Grade walls (Figure ) see
<br />U-Factor
<br />X Area
<br />UA
<br />t x-"a1,:
<br />.
<br />No selection
<br />W
<br />Slab Below Grade (see rtgure t)
<br />F-Factor
<br />X Length �j
<br />UA
<br />s •iE•.s
<br />.
<br />No selection
<br />l---J
<br />Slab on Grade (see Figure 1)
<br />instructions
<br />F-Factor
<br />X Length
<br />1 308
<br />UA
<br />110.88
<br />0.360
<br />Location of Duclts
<br />instructions
<br />Duct Leakage Coefficient
<br />i
<br />Unsondrtoncd Spare
<br />1.10
<br />Sum of UA
<br />136.28
<br />Envelo a Heat Load
<br />6 678 Btu I Hour
<br />P
<br />Sum of UA x AT
<br />Air Leakage Heat Load 318 Btu / Hour
<br />Votumex 0.6xATx0.018
<br />Building Design Heat Load 6,995 Btu / Hour
<br />Air leakage + envelope heat loss
<br />Building and Duct Heat Load 7,595 Btu / Hour
<br />Ducts in unconditioned space: sum of buildina heat loss x 1.10
<br />Ducts in conditioned space: sum of budding heat loss x 1
<br />Maximum Heat Equipment Output 9,618 Btu our
<br />6uildina and duct heat loss x 1.40 for forced air furnace
<br />8u1
<br />1
<br />dino and duct heat loss x 1.25 for heat pump
<br />Prescriptive Path - Single Family 2018 Washington State Energy Code-R 1
<br />2
<br />Summary of Table R406.2 (coat.)
<br />Energy Credits - select ONE
<br />Energy Credit Option Descriptions (cont.) energy option from User Notes
<br />Optionseach category d
<br />5.1d Efficient Water Heating 0.5 ❑ ~
<br />5.2 Efficient Water Heating - 0.5 1❑
<br />5.3 Efficient Water Heating - _ _ - 1.0 1 ❑
<br />5.4 Efficient Water Heating - - 1.5
<br />i
<br />5.5 Efficient Water Heating _ . _._ 2.0 1 ❑
<br />5.6 Efficient Water Heating 2.5 ❑
<br />6.1e Renewable Electric Energy (3 credits max) 1.0 Q
<br />7.1 Appliance Package 0.5 ❑
<br />Total Credits 1.5 Calculate Total Clear Form
<br />a. An alternative heating source sized at a maximum of 0.5 W/sf (equivalent) of heated floor area or 500 W,
<br />whichever is bigger, may be installed in the dwelling unit.
<br />b. Equipment listed in Table C403.3.2(4) or C403.3.2(5)
<br />c. Equipment listed in Table C403.3.2(1) or C403.3.2(2)
<br />d. You cannot select more than one option from any category EXCEPT in category S. Option SA may be combined
<br />with options 5.2 through 5.6. See Table 406.3.
<br />e. 1.0 credit for each 1,200 kWh of electrical generation provided annually, up to 3 credits max.
<br />See the complete Table R406.2 for all requirements and option descriptions.
<br />f. Use the single radiobutton in the upper right of the second column to deselect radiobuttons in that group.
<br />Prescriptive Path - Single Family 2018 Washington State Energy Code-R 3
<br />These requirements apply to all IRC building types, including detached one- and two-family
<br />dwellings and multiple single-family dwellings (townhouses).
<br />Project Information Contact information
<br />924 105th Place SE WILLIAM PAGE
<br />Everett 206-283-8317
<br />Instructions: This single-family project will use the requirements of the Prescriptive Path below and
<br />incorporate the minimum values listed. Based on the size of the structure, the appropriate number of
<br />additional credits are checked as chosen by the permit applicant.
<br />Provide all information from the following tables as building permit drawings: Table R402.1- Insulation and
<br />Fenestration Requirements by Component, Table R406.2 - Fuel Normalization Credits and 406.3 - Energy Credits.
<br />5 dIY 5 Oy W I _.
<br />C William Pa V DNSEpag wG a$gma am.O Mlem Peg Art
<br />Authorized Representative R ,p N Date 05/30/2021
<br />om rng,g?,S,S.�gg.
<br />All Climate Zones (Table R402.1.1)
<br />R-Value a U-Factor a
<br />Fenestration U-Factor b n/a 0.30
<br />Skylight U-Factor b n/a 0.50
<br />Glazed Fenestration SHGC bje n/a n/a
<br />g
<br />Ceilin a - -}--- 49 ---- - 0.026
<br />-- - -
<br />Wood Frame Wall 9,h 21 int 0.056
<br />Floor ( 30 0.029
<br />Below Grade Wall •h 10/15/21 int + TB 0.042 _ --
<br />Slab d,f R-Value & Depth 1 10, 2 ft n/a
<br />R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity that is less
<br />a than the label or design thickness of the insulation, the compressed R-value of the insulation from Appendix
<br />Table A101.4 shall not be less than the R-value specified in the table. j
<br />b The fenestration U-factor column excludes skylights.
<br />"10/15/21 +STB" means R-10 continuous insulation on the exterior of the wall, or R-15 continuous insulation on
<br />the interior of the wall, or R-21 cavity insulation plus a thermal break between the slab and the basement wall at
<br />c the interior of the basement wall. "10/15/21 +5TB" shall be permitted to be met with R-13 cavity insulation on
<br />the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall. "STB"
<br />means R-5 thermal break between floor slab and basement wall.
<br />d I R-10 continuous insulation is required under heated slab on grade floors. See Section R402.2.9.1
<br />For single rafter- or joist -vaulted ceilings, the insulation may be reduced to R-38 if the full insulation depth
<br />e extends over the top plate of the exterior wall. _
<br />R-7.5 continuous insulation installed over an existing slab is deemed to be equivalent to the required perimeter
<br />f slab insulation when applied to existing slabs complying with Section R503.1.1. If foam plastic is used, it shall
<br />I meet the requirements for thermal barriers protecting foam plastics.
<br />For log structures developed in compliance with Standard [CC 400, log walls shall meet the requirements for
<br />g climate zone 5 of ICC 400.
<br />Int. (intermediate framing) denotes framing and insulation as described in Section A103.2.2 including standard
<br />h framing 16 inches on center, 78% of the wall cavity insulated and headers insulated with a minimum of R-10
<br />insulation.
<br />Figure 1.
<br />Overhead Glazing (Skylights)
<br />Component
<br />Width Height
<br />Qt. Feet Inch Feet Inch
<br />2 12 10 14 10
<br />Width Height
<br />Qt. Feet inch Feet inch
<br />GE®E©�
<br />MMEME
<br />-MEMO
<br />MMEME
<br />MMIN
<br />1EM■-■
<br />--■M■
<br />M-■-:
<br />EIME
<br />MEMO
<br />--■M■
<br />MMEME
<br />MM
<br />--■-■
<br />--■-■
<br />--EE�
<br />EIMEME
<br />--■-■
<br />MMEME
<br />MINEMN
<br />MIN
<br />®EINMIN
<br />MMEME
<br />IE-EE
<br />MMEME
<br />--EME
<br />�M■��
<br />MMEMN
<br />EI-E-■
<br />MIN
<br />IN-E-■
<br />-M■-■
<br />MMEME
<br />=MEMO
<br />10-■-■
<br />Sum of Vertical Fenestration Area and UA
<br />Vertical Fenestration Area Weighted U = UA/Area
<br />Width Height
<br />-
<br />t-eei - - reel
<br />®EM
<br />®_
<br />®_
<br />Sum of Overhead Glazing Area and UA
<br />Overhead Glazing Area Weighted U = UA/Area
<br />Total Sum of Fenestration Area and UA (for heating system sizing calculations)
<br />Area UA
<br />0.01 0.00
<br />16-01 --8.00
<br />Area UA
<br />Area UA
<br />1 1
<br />/III
<br />! !
<br />1 11'
<br />11
<br />11/
<br />t1
<br />I t1
<br />1 1 ! 11
<br />! 11
<br />1 1/
<br />Seattle
<br />Whidbey Island
<br />PO. Box 665 Freeland
<br />Washington 98249
<br />206-283-8317
<br />pagearchitects@g mail.com
<br />www.williampagearchitect.com
<br />Issue/Revisions
<br />No. Date Comments
<br />3683
<br />IMLLOM AM ICE Ii'
<br />CITY
<br />OF EVERETT
<br />RLEVISI,NED
<br />Copyright 2021 William Page Architects
<br />Project
<br />Van Patten Residence
<br />924105th Place SE.
<br />Everett, Washington
<br />Sheet Title
<br />Energy Information
<br />Project No.
<br />2021-23
<br />Date
<br />05/30/2021
<br />Scale
<br />AS NOTED
<br />Drawn By
<br />WJP
<br />Checked By
<br />WJP
<br />Sheet
<br />A-9
<br />of Total Sheets
<br />
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