BLD2020-0904+Energy_Calculations+8.24.2020_8.40.37_AMBLD2020-0904
Prescriptive Energy Code Compliance for All Climate Zones in Washington
Project Information Contact Information
Marzano Residence Neil Jorgensen
510 Homeland Dr J3 Architects LLC
Edmonds, WA 98020 425-242-0369
This project will use the requirements of the Prescriptive Path below and incorporate the
the minimum values listed. In addition, based on the size of the structure, the appropriate
number of additional credits are checked as chosen by the permit applicant.
Authorized Representative
All Climate Zones
R-Value'
U-Factora
Fenestration U-Factorb
n/a
0.30
Skylight U-Factor
n/a
0.50
Glazed Fenestration SHGCb'e
n/a
n/a
Ceilingk
49i
0.026
Wood Frame Wall9'"''"
21 int
0.056
Mass Wall R-Value'
21/21'
0.056
Floor
309
0.029
Below Grade Wall"'
10/15/21 int + TB
0.042
Slab R-Value & Depth
10, 2 ft
n/a
*Table R402.1.1 and Table R402.1.3 Footnotes included on Page 2.
Date
RECEIVED
Sep 01 2020
CITY OF EDMONDS
DEVELOPMENT SERVICES
DEPARTMENT
Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 so as to achieve
the following minimum number of credits:
1. Small Dwelling Unit: 1.5 credits
0 Dwelling units less than 1500 square feet in conditioned floor area with less than 300 square feet of fenestration
area. Additions to existing building that are greater than 500 square feet of heated floor area but less than 1500
square feet.
❑2. Medium Dwelling Unit: 3.5 credits
All dwelling units that are not included in #1 or #3. Exception: Dwelling units serving R-2 occupancies shall
require 2.5 credits.
❑3. Large Dwelling Unit: 4.5 credits
Dwelling units exceeding 5000 square feet of conditioned floor area.
❑4. Additions less than 500 square feet: .5 credits
Table R406.2 Summary
Option Description
Credit(s)
1 a
Efficient Building Envelope 1 a
0.5
1 b
Efficient Building Envelope 1 b
1.0
1 c
Efficient Building Envelope 1 c
2.0
1d
Efficient Building Envelope 1d
0.5
2a
Air Leakage Control and Efficient Ventilation 2a
0.5
2b
Air Leakage Control and Efficient Ventilation 2b
1.0
2c
Air Leakage Control and Efficient Ventilation 2c
1.5
3a
High Efficiency HVAC 3a
1.0
3b
High Efficiency HVAC 3b
1.0
3c
High Efficiency HVAC 3c
1.5
3d
High Efficiency HVAC 3d
1.0
4
High Efficiency HVAC Distribution System
1.0
5a
Efficient Water Heating 5a
0.5
5b
Efficient Water Heating 5b
1.0
5c
Efficient Water Heating 5c
1.5
5d
Efficient Water Heating 5d
0.5
6
Renewable Electric Energy
0.5
Total Credits
*Please refer to Table R406.2 for complete option descriptions
El
El
El
El
El
0 1.0
0 1.5
El
------ 1 * 1200 kwh 0.0
2.50
Table R402.1.1 Footnotes
For SI: 1 foot .= 304.8 mm, ci .= continuous insulation, int .= intermediate framing.
a R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is
less 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.
b The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration.
"10/15/21.+TB" means R-10 continuous insulation on the exterior of the wall, or R-15 on the 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 the interior of the basement wall. "10/15/21.+TB" 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. "10/13" means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity
insulation at the interior of the basement wall. "TB" means thermal break between floor slab and basement
wall.
d R-10 continuous insulation is required under heated slab on grade floors. See R402.2.9.1.
e There are no SHGC requirements in the Marine Zone.
f Reserved.
g Reserved.
h Reserved.
'The second R-value applies when more than half the insulation is on the interior of the mass wall.
'Reserved.
k For single rafter- or joist -vaulted ceilings, the insulation may be reduced to R-38.
Reserved.
m Int. (intermediate framing) denotes standard framing 16 inches on center with headers insulated with a
minimum of R-10 insulation.
Table R402.1.3 Footnote
a Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source or as
specified in Section R402.1.3.
Window, Skylight and Door Schedule
Project Information
Marzano Residence
510 Homeland Dr.
Edmonds, WA 98020
Ref. U-factor
Exempt Swinging Door (24 sq. ft. max.) jEntry 10.30
Exempt Glazed Fenestration (15 sq. ft. max.)
Vertical Fenestration (Windows and doors)
Component
Description Ref. U-factor
Garage Door
0.30
Laundry Door
0.30
Laundry Wdo
0.30
Laundry Wdo
0.30
Laundry Wdo
10.30
Stair Wdo
0.30
BDrm #2 Wdo
0.30
Bath Wdo
0.30
M. Bdrm Wdo
0.30
M. Bdrm SLD
10.30
Loft Door
0.30
Contact Information
Neil Jorgensen
J3 Architects
425-242-0369
Width Height
Qt. Feet Inch Feet Inch Area UA
1 13 10 16 18 1 off -Ting
Width Height
Qt. Feet Inch Feet Inch
MMEME
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Area UA
Sum of Vertical Fenestration Area and UA
Vertical Fenestration Area Weighted U = UA/Area
Overhead Glazing (Skylights)
Component
Description Ref. U-factor
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)
11
111
11
111
11
111
11
111
11
111
11
111
11
111
199.8 59.95
0.30
Area UA
11
111
11
111
11
111
11
111
11
111
11
111
11 111
1 11
219.8 65.95
bimme Heatlna bmem Size: wasnlnaton state
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
Marzano Residence Neil Jorgensen
510 Homeland Dr J3 Architects LLC
Edmonds, WA 98020 425-242-0369
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 AT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
740
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
7.8
5,772
Glazing and Doors
U-Factor
X Area =
UA
Instructions
0.30
220
65.94
Skylights
U-Factor
X Area =
UA
Instructions
0.50
Insulation
Attic
U-Factor
X Area =
UA
Instructions
R-49
0.026
591
15.37
Single Rafter or Joist Vaulted Ceilings
U-Factor
X Area
UA
Instructions
No Vaulted Ceilings in this project.
�
---
Above Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions
0.056
1,234
69.10
R-21 Intermediate
Floors
U-Factor
X Area
UA
InstructionsLJ
0.029
486
14.09
R-30
Below Grade Walls (see Figure 1)
U-Factor
X Area
UA
Instructions
No Below Grade Walls in this project.
LJ---
---
Slab Below Grade (see Figure n
F-Factor
X Length
UA
Instructions `
No Slab Below Grade in this project.
1 ---
Slab on Grade (see Figure n
F-Factor
X Length
UA
Instructions
No Slab on Grade in this project.
�
Location of Ducts
Instructions
Duct Leakage Coefficient
Unconditioned Space
1.10
Sum of UA
164.50
Figure 1.
Above Grade
46
Envelope Heat Load
7,567 Btu / Hour
Sum of UA X AT
Air Leakage Heat Load
2,868 Btu / Hour
VolumeX 0.6XATX.018
Building Design Heat Load
10,435 Btu/Hour
Air Leakage + Envelope Heat Loss
Building and Duct Heat Load
11,478 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
14,348 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)