Wash. Admin. Code § 51-11C-40211 - Section C402.1.1-Low energy buildings
Low energy buildings shall comply with Section C402.1.1.1. Semi-heated buildings and spaces shall comply with Section C402.1.1.2. Greenhouses shall comply with Section C402.1.1.3.
Opaque walls in semi-heated spaces shall be calculated as fully code compliant opaque walls for both the target and proposed for the Target UA calculations for Component Performance compliance per Section C402.1.5, and for the Baseline Building Design for Total Building Performance compliance per Section C407. The capacity of heat trace temperature maintenance systems complying with Section C404.7.2 that are provided for freeze protection of piping and equipment only shall not be included in the total installed output capacity of mechanical space conditioning systems.
EXCEPTION: |
Provided the total installed heating output capacity of mechanical space conditioning does not exceed the criteria for semi-heated space as defined in Section C202, a semi-heated building or space may comply with this section when served by heat pumps without electric resistance back up and connected to a heating only thermostat. |
EXCEPTION: |
Low energy greenhouses that comply with Section C402.1.1.1. |
EXCEPTION: |
Unheated greenhouses. |
Table C402.1.1.3
Fenestration Thermal Envelope Maximum Requirements
Component |
U-Factor BTU/h-ft2-°F |
Skylights |
0.5 |
Vertical fenestration |
0.6 |
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-40211, filed 2/1/13, effective 7/1/13.
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Low energy buildings shall comply with Section C402.1.1.1. Semi-heated buildings and spaces shall comply with Section C402.1.1.2. Greenhouses shall comply with Section C402.1.1.3.
Opaque walls in semi-heated spaces shall be calculated as fully code compliant opaque walls for both the target and proposed for the Target UA calculations for Component Performance compliance per Section C402.1.5, and for the Baseline Building Design for Total Building Performance compliance per Section C407. The capacity of heat trace temperature maintenance systems complying with Section C404.7.2 that are provided for freeze protection of piping and equipment only shall not be included in the total installed output capacity of mechanical space conditioning systems.
EXCEPTION: | Provided the total installed heating output capacity of mechanical space conditioning does not exceed the criteria for semi-heated space as defined in Section C202, a semi-heated building or space may comply with this section when served by heat pumps without electric resistance back up and connected to a heating only thermostat. |
EXCEPTION: | Low energy greenhouses that comply with Section C402.1.1.1. |
EXCEPTION: | Unheated greenhouses. |
Table C402.1.1.3
Fenestration Thermal Envelope Maximum Requirements
Component | U-Factor BTU/h-ft2-°F |
Skylights | 0.5 |
Vertical fenestration | 0.6 |
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-40211, filed 2/1/13, effective 7/1/13.