PDFWAC 51-11C-40702

Section C407.2Mandatory requirements.

C407.2 Mandatory requirements. Compliance with Section C407 also requires compliance with those sections shown in Table C407.2.
The building permit application for projects utilizing this method shall include in one submittal all building and mechanical drawings and all information necessary to verify that the building envelope and mechanical design for the project corresponds with the annual energy analysis. If credit is proposed to be taken for lighting energy savings, then an electrical permit application shall also be submitted and approved prior to the issuance of the building permit. If credit is proposed to be taken for energy savings from other components, then the corresponding permit application (e.g., plumbing, boiler, etc.) shall also be submitted and approved prior to the building permit application. Otherwise, components of the project that would not be approved as part of a building permit application shall be modeled in the baseline in accordance with ANSI/ASHRAE/IESNA 90.1 Appendix G and in the proposed model in accordance with the requirements of the Washington State Energy Code.
Table C407.2
Mandatory Compliance Measures for Total Building Performance Method
Sectiona
Title
Comments
Envelope
C401
Thermal envelope certificate
 
C402.2.7
Airspaces
 
C402.5
Air leakage
 
Mechanical
C403.1.2
Calculation of heating and cooling loads
 
C403.1.3
Data centers
 
C403.2
System design
 
C403.3.1
Equipment and system sizing
 
C403.3.2
HVAC equipment performance requirements
 
C403.3.3
Hot gas bypass limitation
 
C403.3.4.4
Boiler turndown
 
C403.4.1
Thermostatic controls
 
C403.4.2
Off-hour controls
 
C403.4.7
Combustion heating equipment controls
 
C403.4.8
Group R-1 hotel/motel guestrooms
See Section C403.7.4
C403.4.9
Group R-2 and R-3 dwelling units
 
C403.4.10
Group R-2 sleeping units
 
C403.4.11
Direct digital control systems
 
C403.5.5
Economizer fault detection and diagnostics (FDD)
 
C403.7
Ventilation and exhaust systems
Except for C403.7.6.2
C403.8
Fan and fan controls
 
C403.9.1.1
Variable flow controls
For cooling tower fans ≥ 7.5 hp
C403.9.1.2
Limitation on centrifugal fan cooling towers
For open cooling towers
C403.10
Construction of HVAC elements
 
C403.11
Mechanical systems located outside of the building thermal envelope
 
C403.14
Commissioning
 
Service Water Heating
C404
Service water heating
Except for C404.2.1
Lighting and Electrical
C405
Electrical power and lighting systems
 
Other Requirements
C407
Total building performance
 
C408
System commissioning
 
C409
Energy metering
 
C410
Refrigeration requirements
 
C411b
Renewable energy
 
C412
Compressed air systems
 
a
Reference to a code section includes all the relative subsections except as indicated in the table.
b
Compliance with any of these sections includes compliance with any exception to that section.
[Statutory Authority: RCW 19.27A.020, 19.27A.025, 19.27A.160, chapters 19.27A and 19.27 RCW. WSR 24-03-085, § 51-11C-40702, filed 1/16/24, effective 3/15/24; WSR 22-14-091, 23-12-101, and 23-20-021, § 51-11C-40702, filed 7/1/22, 6/7/23, and 9/25/23, effective 3/15/24. Statutory Authority: RCW 19.27A.025, 19.27A.045 and chapter 19.27 RCW. WSR 20-21-080, § 51-11C-40702, filed 10/19/20, effective 2/1/21. Statutory Authority: RCW 19.27A.020, 19.27A.025, 19.27A.160 and chapter 19.27 RCW. WSR 19-24-040, § 51-11C-40702, filed 11/26/19, effective 7/1/20. Statutory Authority: RCW 19.27A.025, 19.27A.160, and 19.27.074. WSR 16-03-072, § 51-11C-40702, filed 1/19/16, effective 7/1/16. Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. WSR 13-04-056, § 51-11C-40702, filed 2/1/13, effective 7/1/13.]