HomeMy WebLinkAboutPrescriptive Worksheet Both Zones 2015 mod_2326_190628_v2Prescriptive Energy Code Compliance for All Climate Zones in Washington
Project Information Contact Information
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 _________________________________________________ Date ___________________________
1. Small Dwelling Unit: 1.5 credits
2. Medium Dwelling Unit: 3.5 credits
3. Large Dwelling Unit: 4.5 credits
4. Additions less than 500 square feet: .5 credits
Option Credit(s)
1a Efficient Building Envelope 1a 0.5 0.5
1b Efficient Building Envelope 1b 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 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 0.5
5b Efficient Water Heating 5b 1.0
5c Efficient Water Heating 5c 1.5 1.5
5d Efficient Water Heating 5d 0.5
6 Renewable Electric Energy 0.5 *1200 kwh 0.0
Total Credits 3.50
*Please refer to Table R406.2 for complete option descriptions
Slabd R-Value & Depth
49j
21 int
21/21h
30g
10, 2 ft
Ceilingk
Wood Frame Wallg,m,n
Mass Wall R-Valuei
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:
*Table R402.1.1 and Table R402.1.3 Footnotes included on Page 2.
Dwelling units exceeding 5000 square feet of conditioned floor area.
Description
Table R406.2 Summary
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.
All dwelling units that are not included in #1 or #3. Exception: Dwelling units serving R-2 occupancies shall
require 2.5 credits.
Plan 2326 Rueppell, Inc.
(253) 297-8040
All Climate Zones
0.029
0.042
n/a
10/15/21 int + TB
n/a
n/a
n/a
0.056
0.30
0.50
n/a
0.026
0.056
Floor
Below Grade Wallc,m
Glazed Fenestration SHGCb,e
Fenestration U-Factorb
Skylight U-Factor
U-FactoraR-Valuea
D08-053
B19001043
V2
REVISION
Received: 06/28/2019 / aalexander
BUILDING DIVISION
APPROVEDBUILDING DIVISION
THIS SET OF APPROVED PLANS MUST BE ON THE JOB AT ALLTIMES DURING CONSTRUCTION. THIS BUILDING IS NOT TO BEOCCUPIED UNTIL AFTER FINAL INSPECTION BY THE RENTONBUILDING DIVISION AND RECEIPT OF CERTIFICATE OFOCCUPANCY.
APPROVAL SHALL NOT BE CONSTRUED AS THE AUTHORITY TOVIOLATE OR CANCEL ANY PROVISIONS OF CODES, ORDINANCES,OR OTHER REGULATIONS ENFORCED BY THIS CITY.
DATE: 07/05/2019
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.
c "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.
i The second R-value applies when more than half the insulation is on the interior of the mass wall.
j Reserved.
k For single rafter- or joist-vaulted ceilings, the insulation may be reduced to R-38.
l 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.