energy codePrescriptive Energy Code Compliance for All Climate Zones in Washington
Project Information Contact Information
Add 78 sf covered second floor deck, replace Michael George architect
second floor roof, enlarge second floor bedroom 922 1st street
12 sf Snohomish, WA 98290
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 i� l/ �y�� Date
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
49'
0.026
Wood Frame Wall9m"
21 int
0.056
Mass Wall R-Value'
21/21h
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.
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.
04. Additions less than 500 square feet: .5 credits
Table R406.2 Summary
Option Description
Credit(s)
la
JEfficient Building Envelope la
0.5
lb
Efficient Building Envelope 1 b
1.0
1 c
Efficient Building Envelope 1 c
2.0
1 d
Efficient Building Envelope 1 d
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
R] 0.5
El
11
El
El
-*1200 kwh 0.0
0.50
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.
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.
i-ro/ect Informatton
Contact Information
Michael Madden - Linda Krese Madden
Michael George Architect
Add 78 sf covered second floor deck, Replace second floor roof
922 1st street
enlarge second floor bedroom 12 sf
Snohomish, WA 98290
Heating System Type: o A I Omer systems
0 Heat Pump
To see detailed instructions for each section, place your cursor on the word 'Instructions-.
Design Temperature
Instructions
s no n
Design Temperature Difference (AT) 49
^s
dT = Indoor (70 degrees) - Outdoor Design Temp
Area of Building
Conditioned Floor Area
Instructions Conditioned Floor Area (sq ft)
396
Average Ceiling Height
Conditioned Volume
Instructions Average Ceiling Height (ft)
9.0 3,564
Glazing and Doors
U-Factor X Area =
UA
Instructions
u ON
0.240 35
8.40
Skylights -
U-Factor X Area =
UA
Instructions
0.50
—
Insulation
Attic
U-Factor X Area =
UA
Instructions " ,_—
a-09
. ! 0.026 396
10.30
Single Rafter or Joist Vaulted Ceilings
U-Factor X Area
UA
Instruction - n3ev, d - -
. 0.027 F 396
10.69
Above Grade Walls (see Figure 1)
U-Factor X Area
UA
!nstruciions .-------.___.___—___--
a z, ��,em�ea�le
-----
0.056 605--1
33.88
.
Floors
U-Factor X Area
UA
Instructions as°--- -- -----
- --
0.029
-
Below Grade Walls (see Figure 1)
U-Factor X Area
UA
nstructions N.!!!G,adewan,i NSP"r—
0.028
Slab Below Grade (see Figure 1) x
F-Factor X Len th
UA
Instructions Noswbaew Gla ma k ieo
0.303 0
--
Slab on Grade fsee Fiw,re 11
F-Factor X Length
UA
Instructions ----
No Slab on Grade m this prajezt
� � — 0
Location of Ducts
Instructions
- Duct Leakage Coefficient
f. C d ed Spa
r , -
1.00
Sum of UA
63.27
Envelope Heat Load
3,100 Btu / Hour
Figure 1.
Sum of uAX AT
Air Leakage Heat Load
1,886 Btu / Hour
vommeX 0.6xerX.018
Atave Grade
Building Design Heat Load
4,986 Btu / Hour
Air Leakage - Envelope Heat Loss
Building and Duct Heat Load
4,986 Btu / Hour
Ducts in unconditioned space: Sum of Building Heat Loss X 1.10
Ducts in conditioned space: Sum of Building Heat Loss X ?
Maximum Heat Equipment Output
6,981 Btu / Hour
Building and Dud Heal Loss X 1.40 for Forced Air Furnace
Building and Dud Heat Loss X 1.25 for Heat Pump
(07101113)