Energy CalculationsWindow, Skylight and Door Schedule
Project Information
Birkby Residence Addition Remodel
839 Cary Road
Edmonds, WA 98020
Ref. U-factor
Exempt Swinging Door (24 sq. ft. max.)
Exempt Glazed Fenestration (15 sq. ft. max.)
Vertical Fenestration (Windows and doors)
Component
Description Ref. U-factor
All Windows 0.30
Contact Information
Daniel G. Weller, Inc.
1621 Central Avenue S, Suite A
Kent, WA 98032
Width Height
Qt. Feet inch Feet inch
Width Height
Qt. Feet Inch Feet Inch
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F-11 1S �L`1
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Area UA
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11
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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 Inc" Feet Ire"
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)
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747.1 224.13
0.30
Area UA
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1 11
747.1 224.13
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 cooling systems should be used to determine cooling 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
Birkby Residence Addition Remodel
339 Cary Road
Edmonds, WA 98020
Heatinq System Type: ® All Other Systems
Contact Information
Daniel G. Weller, Inc.
1621 Central Avenue S, Suite A
Kent, WA 98032
o Heat Pump
To see detailed instructions for each section, place your cursor on the word "Instructions".
Design Temperature
Design Temperature Difference (AT)
Edmonds1W AT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
Average Ceiling Height
Instructions Average Ceiling Height (ft)
Glazinq and Doors
Instructions
Skylights
Instructions
Insulation
Attic
Instructions
�fR 49
Single Rafter or Joist Vaulted Ceilings
Instructions R-38 Vented
Above Grade Walls (see Figure 1)
Instructions 1
6R-21 Intermediate Ji
Floors
It
Instructions
Ft
30
Below Grade Walls (see Figure 1)
Instructions
Select R-value
Slab Below Grade (see Figure 1)
Instructions
JJ[S�el.,tnditioning �
Slab on Grade (see Figure 1)
Instructions 1
Select R-Value Ji
Location of Ducts
Instructions a
Unconditioned Space J
Figure 1.
Above Grade
Below Grade
4,841
Conditioned Volume
8.01
38,728
U-Factor
X
Area =
UA
0.30
747
224.10
U-Factor
X
Area =
UA
0.50
---
U-Factor
X
Area =
UA
0.026
3,493
90.82
U-Factor
X
Area
UA
0.027
186
5.02
U-Factor
X
Area
UA
0.056
2,749
153.94
U-Factor
X
Area
UA
0.029
3,679
106.69
U-Factor X Area
No selection
F-Factor X Length
No selection
F-Factor X Length
No selection
Sum of UA
Duct Leakage Coefficient
1.10
Envelope Heat Load
Sum of UA X AT
Air Leakage Heat Load
Volume X 0.6 X AT X .018
Building Design Heat Load
Air Leakage + Envelope Heat Loss
UA
UA
UA
26,706 Btu / Hour
19,240 Btu / Hour
45,947 Btu / Hour
Building and Duct Heat Load 50,541 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 70,758 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)
Prescriptive Energy Code Compliance for All Climate Zones in Washington
Project Information Contact Information
Birkby Residence Addition Remodel Daniel G Weller, Inc.
839 Cary Road 1621 Central Avenue S, Suite A
Edmonds, WA 98020 Kent, WA 98032
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-Valuea
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
4Y
0.026
Wood Frame Wall,,m,n
21 int
0.056
Mass Wall R-Value'
21/21h
0.056
Floor
301
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
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
❑ 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)
1a
Efficient Building Envelope 1a
0.5
1 b
Efficient Building Envelope 1 b
1.0
1c
Efficient Building Envelope 1c
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
0.5
*1200 kwh 0.0
0.50
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.
" 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.