REVIEWED BLD2023-1484+Energy_Calculations+11.17.2023_3.37.56_PM+3908475BLD2023-1484
REVIEWED Al
Prescriptive Er e
BY Single
CITY OFTFDMse QNDSments p 1
Washington State Energy Code — Residential
y Code Compliance for All Climate Zones in Washington
iffy — New & Additions (effective February 1, 2021) Version 1.0
y to all IRC building types, including detached one- and two-family
and multiple single-family dwellings (townhouses).
is. Project formation { L contact Information -
Maplewood Estates Lot C Landsverk Quality Homes Inc.
Getz Custom Residence 425-742-2742
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.
RECEIVED
Dec 14 2023
i s
Joseph Rowett '` _ j
Authorized Representative a..�... '[Date 11-15-2023
All Climate Zones (Table R402-1_1j
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 be
n/a
—
n/a
Ceiling e
{ 49
{ 0.026 {
(Wood Frame Wall gh
{ 21 int
{ 0.056 {
{ Floor
{ 30
{ 0.029
Below Grade Wall c.h
{ 10/15/21 int +TB {
0.042
Slab d•f R-Value & Depth
j 10, 2 ft
n/a
-
jR-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity that is less I
athan
the label or design thickness of the insulation, the compressed R-value of the insulation from Appendix I
iTable
A101.4 shall not be less than the R-value specified in the table.
b
iThe fenestration U-factor column excludes skylights. j
i
#I
1"10/15/21 +STB° means R-10 continuous insulation on the exterior of the wall, or R-15 continuous insulation on
ithe 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 {
Ithe interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the wall. "5TB"
i
,means R-5 thermal break between floor slab and basement wall. I
d
R-10 continuous insulation is required under heated slab on rade floors. See Section R402.2.9.1.
! For single rafter- or joist vaulted ceilings, the insulation maybe reduced to R-38 if the full insulation depth
e
lextends 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
Islab insulation when applied to existing slabs complying with Section R503.1.1. If foam plastic is used, it shall
L1
meet the requirements for thermal barriers protecting foam plastics. E
i
For log structures developed in compliance with Standard ICC 400, log walls shall meet the requirements for
9
climate zone 5 of ICC 400.
{
iInt., (intermediate framing) denotes framing and insulation as described in Section A103.2.2 including standard
h
Ifrafning 16 inches on center, 78% of the wall cavity insulated and headers insulated with a minimum of R-10 I
{insulation.
Prescriptive Path - Single Family 2018 Washington State Energy Code-R
1
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 I
Fuel Normalization Descriptions
T-
Credits - select ONE
heating option
I User Notes
-,
1 (Combustion heating minimum NAECAb
0.0
❑
2 'Heat pump`
E 1.0
❑
3 (Electric resistance heat only - furnace or zonal
-1.0
❑
1DHP with zonal electric resistance per option 3.4
0.5
i ❑
_
I 5 JAII other heating systems
-1.0
❑
`
Energy I
I Energy Credit Option Descriptions
Options
Credits - select ONE
energy option from each
i category a
I s
€ P
1.1 (Efficient Building Envelope
0.5
❑
1.2 !Efficient Building Envelope
1.0
M
I 1.3 !Efficient Building Envelope
0.5
0
I
1.4 Efficient Building Envelope
1.0
❑
1 1.5 !Efficient Building Envelope 1 2.0 1 ❑
! 1.6 Efficient Building FnvPlonP f 3 n I M
p 1.7 Efficient Building Envelope ❑l
0.5
❑
2.1 jAir Leakage Control and Efficient Ventilation �-
0.5
0
L_ 2.2 !Air Leakage Control and Efficient Ventilation 1.0 ❑
23 !Air Leakage Cnntrnl and FffiriPnt VPntilatinn ! 1 S ! n !
2.4 iAir Leakage Control and Efficient Ventilation Y
2.0
1 ❑
3.1- 1High Efficiency HVAC
I 1.0
❑
3.2 IH
3.3a j H
3.4 H
i
3.5 H
3.6- ! H
HVAC
HVAC
HVAC
HVAC
HVAC
HVAC
0.5
4.2 (High Efficiency HVAC Distribution System 1.0
Prescriptive Path - Single Family 2018 Washington State Energy Code-R
2
2018 Washington State Energy Code — Residential
Prescr�ptwe Energ!/ Code Compliance for All C{imate Zones �n Washmton
Summary of Table R406.2 (cont.)
Energy
,Options
? Energy Credit Option Descriptions (cont.)
i Credits - select ONE
energy option from
each category d
1
i User Notes
5.1d
Efficient Water Heating
0.5
5.2
(Efficient Water Heating
0.5
❑
! 5.3
Efficient Water Heating
1.0
❑
i 5.4
Efficient Water Heating
1.5
❑
I
5.5
Efficient Water Heating
j 2.0
j
i 5.6
Efficient Water Heating ❑�
2.5
❑
6.1e
Renewable Electric Energy (3 credits max)
i 1.0
Q
I
7.1
jAppliance Package
j 0.5
I ❑
!
Total Credits
j
6.o
Clear Form j
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 C4033.2(4) or C4033.2(5)
c. Equipment listed in Table C4033Z(1) or C4033.2(2)
d. You cannot select more than one option from any category EXCEPT in category 5.Option 5.1 may be combined
with options 5.2 through S.G. See Table 406.3.
e. 1.0 credit for each 1,200 kWh of electrical generation pravided 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 WQrksheet for submission to your building Qfticial.
Prescriptive Path — Single Family 2018 Washington State Energy Code-R
Window, Skylight and Door Schedule
Project Information
Maplewood Estates Lot C
Getz Custom Residence
2480 sq. ft.
Exempt Swinging Door (24 sq. ft. max.)
Exempt Glazed Fenestration (15 sq. ft. max.)
Vertical Fenestration (Windows and doors)
Component
Description
Ref. U-factor
0.30
Ref. U-factor
Office
0.28
Powder Room
0.28
Foyer
0.28
Master Bathroom
0.28
Master Bedroom
0.28
Master Bedroom
0.28
Master Bedroom
0.28
Great Room
0.28
Dining Area
10.28
Dining Area
0.28
Dining Area
0.28
Dining Area
0.28
Kitchen
0.28
Kitchen
10.28
Upper Foyer
0.28
Upper Foyer
0.28
Loft
0.28
Bedroom #2
0.28
Bedroom #3
0.28
Contact Information
Landsverk Quality Homes, Inc.
24113 56th Ave W
Mountlake Terrace, WA 98043
Width Height
Qt. Feet Inch Feet Inch
1 3 s 8 °
Width Height
Qt. Feet Inch Feet Inch
MMEME
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MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
MMEME
Area UA
11
111
Area UA
• 1
1 1:
• 1
1 1:
®1
1 •
• 1
1 1:
' 1
• 1
1 1:
®
• 1
1
1�
11
111
' 1
' 1
1 1
•1
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)
438.0 122.64
0.28
Area UA
466.0 131.04
Simple Heating System Size: Washington State
This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code (WSEC) and ACCA Manuals
J and S. This calculator will calculate heating loads only. ACCA procedures for sizing coolinq systems should be used to determine coolinq loads.
The glazing (window) and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of 0.30.
The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2015 WSEC.
Please fill out all of 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 call the WSU Energy Extension Program at
(360) 956-2042 for assistance.
Project Information Contact Information
Maplewood Estates Lot C Landsverk Quality Homes, Inc.
Getz Custom Residence 24113 56th Ave W
2480 sq. ft. Mountlake Terrace, WA 98043
Heating System Type: O All other systems O Heat Pump
To see detailed instructions for each section, place your cursor on the word 'Instructions".
Design Temperature
Instructions Design Temperature Difference (AT)
Edmonds V AT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
instrucuons Conditioned Floor Area (sq ft)
2,480
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
9.5
23,560
Glazing and Doors
U-Factor
X Area =
UA
Instructions
0.30
438
131.40
Skylights
U-Factor
X Area =
UA
Instructions
0.50
Insulation
Attic
U-Factor
X Area =
UA
Instructions R-49 W
0.026
724
18.82
Single Rafter or Joist Vaulted Ceilings
U-Factor
X Area
UA
Instructions R-38 Vented W
0.027
F 1,1917
32.16
Above Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions
0.056
2,635
147.56
R-21 Intermediate �
Floors
U-Factor
X Area
UA
Instructions
0.025
1,834
45.85
R-38 W
Below Grade Walls (see Figure 1)
U-Factor
X Area
ILIA
Instructions
No Below Grade Walls in this project. W
Slab Below Grade (see Figure 1)
F-Factor
X Length
UA
Instructions
F
No Slab Below Grade in this project. �
Slab on Grade (see Figure 1)
F-Factor
X Length
UA
Instructions
No Slab on Grade in this project.
Location of Ducts
Instructions
Duct Leakage Coefficient
No Ducts
1.00
Sum of UA
375.79
Figure 1.
Above Grade
46
Envelope Heat Load
17,286 Btu / Hour
Sum of UA X AT
Air Leakage Heat Load
11,705 Btu/Hour
VolumeX 0.6XATX.018
Building Design Heat Load
28,991 Btu / Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load
28,991 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
36,239 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)