REVIEWED BLD-BLD2020-0865+Energy Code Compliance Doc+8.19.2020_12.48.18_PMBLD2020-0865
Prescriptive Energy Code Compliance for All Climate Zones in Washington RECEIVED
Project lnformaiion Contact lnfomratlon Sep 14 2020
Vector One, i.LC SFR CITY OF NDS
Architectural DesigA�ssociates, PS D VELOPMEN SOERVICES
Edmonds, WA. 425 68AnT[ 31 DEPARTMENT
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 9hosen by the permit applicant.
Authorized Representative �4
Date S 2: O
All/Cl' ate -Zones
R-Valuea
U-Factor'
Fenestration U-Factorb
n/a
0.30
Skylight U-Factor
n/a
0.50
Glazed Fenestration SHGCb,e
n/a
n/a
Ceiiingk
49'
0.026
Wood Frame Wallg^n
21 int
0.056
Mass Wall R-Value'
21/21n
0.056
Floor
309
0.029
Below Grade Wallm
10/15/21 int + TB
0.042
Slab R-Value & Depth
10, 2 ft
n/a
We K402. rJ and iaore K4U1.1.3 Footnotes included on Page 2.
REVIEWED
BY
CITY OF EDMONDS
BUILDING DEPARTMENT
IEach 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 trap 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 4
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
i avie m4ub.z bummary
Option Description
la
Efficient Building Envelope la
vicwi a
0.5
lb
Efficient Building Envelope 1 b
1.0
1c
Efficient Building Envelope I
2.0
1d
Efficient Building Envelope I
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
.1200 kWh
Dwelling Unit . ............ 1.5 Credits
Dwelling units less than 1,500 square feet In condmoned floor area with less dren 300 square feet of fenestration
area. Addmons to Bale ft building that are greater than SW square feet of heated floor area but lass then 1500
square feet.
im Dwelling Unit:...... 35 Credits
All dwelling units rat Included In 81 or#3. Ez pdon: Dwellings unit serving R-2 occupancies require 25 credits.
Dwelling Unit:........... 4 edits
Dwelling units weaseding S,ODD square feet of conditioned floor area.
Ons less than 500 square feet:...... 0.5 Credits
ENERGY CREDITS
TABLE 406.2
"MENFURUY VRYEWKSat 0.5
prescriptive compllance Is based on Table INOQ.2.1 with the following modlRptbns:
Fenestralorl U.vD.28
Floor R-38
Slab on grade R-10 Perimeter and under smore slab
below grade all R-10 parkaeterand untlerentire slab
On
Cemppance baud an.Sectlon R402.1A: Room the Toot UA by M
HIGH EFFICIENCY HVAC EQUIPMENT 3a: 1.0
Gas, propane or oil -fired furnace with minimum AFUE of 94%, or Gas,
propane or oil -fired bioler with minimum AFUE of 92%
To qualify to claim this credit, the building permit drawings shall specify the option
being selected and shall specify the heating equipment type and the minimum
W"
All showerhead and kitchen sink faucets Installed In the house shall be rated at 1.75
GPM or lass. Ali otherlayatory faucets shall be rated at 1.0613101 or less.`
To qualify to claim this credit, the building Perm* drawings shag specify the option
being selected and shag specify the maximum flow rates forall showerheads, kitchen
sc EFFICIENT WATER HEATING sit 1.5
Water heating system shall Include one of the following:
Gas, propane or oil water heater with a minimum EF of0.91
or
Solar water heating supplementing a maximum standard water heater. Solar water
heating will provide a rated minimum savings of 85 therms or Z000 kWh based on the
Solar Rating and Certification Corporation (SRCQ Annual Performance of OG-3W
Certified Solar Water Healing Systems
or
Electric heat pump water heater with a minimum EF of 2.0 and meeting the standard*
of NEEA's Northam Climate Specifications for Heat Pump Water Heaters.
To qualify to claim this credit, the building perm* drawings shall specify the option
being selected and shag specify the water heater equlpmerm type and the minimum
equipment efficiency and, for solar water heating systems, the calculation of the
mininrwn energy savings.
a. Projects usIngthb option may not use Option la, lb or la
b. Projects may bmN inckdaeredhkrrrhtmaepabe oealraoplbn,3a,3b,3cor lid. Wtmohahpbgur thutwo Pkuotsof
equonmt iiae, taro fumeca) bolt rmwt meat the smWwd to mmWa the aced*.
Plw M% PoRores Flow Red - taw flow plumbing flxmrea (water closets *W urinals) and listings (faucets end
showerlisaW doll comply writ8 thefollowin6 requirements:
1. Residential bathroom lavatory sink faucets: Mndmum flow rote- 34 t/min (10 gal/mini when tested In aorordeuce
with ASME A112.18.1/CSA 8125.L
2. Residential kitchen hucets: hfw&wm flow rate - 6.61/min (1.75 gal/nlnl when tested In accordance with ASIAE
A112.18.1/CSA 8125,2.
3 ResidenWl shovverh sals; Maximum flow ate - 6.6 Umin 11.75 Wage) when tested In accordance with ASME
A112.1&&XSA 8125.L
Total Credits
0.00
*Please refer to Table R406.2 for complete option descriptions
SI: 1 foot .= 304.8 mm, ci .= continuous insulation, int .= intermediate framing.
R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is
ss than the label or design thickness of the insulation, the compressed R-value of the insulation from
Table A101.4 shall not be less than the R-value specified in the table.
"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.
R-10 continuous insulation is required under heated slab on grade floors. See R402.2.9.1.
There are no SHGC requirements in the Marine Zone.
Reserved.
Reserved.
Reserved.
The second R-value applies when more than half the insulation is on the interior of the mass wall.
Reserved.
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.
Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source or as
iecified in Section R402.1.3.