Wash. Admin. Code § 51-11C-303135 - Table C303.1.3(5) - Small business compliance default table
Table C303.1.3(5) Small Business Compliance Table Default U-Factors for Vertical Glazing
Vertical Glazing Description |
Frame Type |
|||||
Any Frame |
Aluminum Thermal Break2 |
Wood/Vinyl/ Fiberglass |
||||
Panes |
Low-e1 |
Spacer |
Fill |
|||
Double3 |
A |
Any |
Argon |
0.48 |
0.41 |
0.32 |
B |
Any |
Argon |
0.46 |
0.39 |
0.30 |
|
C |
Any |
Argon |
0.44 |
0.37 |
0.28 |
|
C |
High Performance |
Argon |
0.42 |
0.35 |
Deemed to comply5 |
|
Triple4 |
A |
Any |
Air |
0.50 |
0.44 |
0.26 |
B |
Any |
Air |
0.45 |
0.39 |
0.22 |
|
C |
Any |
Air |
0.41 |
0.34 |
0.20 |
|
Any double low-e |
Any |
Air |
0.35 |
0.32 |
0.18 |
1 |
Low-eA (emissivity) shall be 0.24 to 0.16. |
Low-eB (emissivity) shall be 0.15 to 0.08. |
|
Low-eC (emissivity) shall be 0.07 or less. |
|
2 |
Aluminum Thermal Break = An aluminum thermal break framed window shall incorporate the following minimum design characteristics: |
a) The thermal conductivity of the thermal break material shall be not more than 3.6 Btu-in/h/ft2/°F; |
|
b) The thermal break material must produce a gap in the frame material of not less than 0.210 inches; and |
|
c) All metal framing members of the products exposed to interior and exterior air shall incorporate a thermal break meeting the criteria in a) and b) above. |
|
3 |
A minimum air space of 0.375 inches between panes of glass is required for double glazing. |
4 |
A minimum air space of 0.25 inches between panes of glass is required for triple glazing. |
5 |
Deemed to comply glazing shall not be used for performance compliance. |
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-303135, filed 2/1/13, effective 7/1/13.
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Table C303.1.3(5) Small Business Compliance Table Default U-Factors for Vertical Glazing
Vertical Glazing Description | Frame Type | |||||
Any Frame | Aluminum Thermal Break2 | Wood/Vinyl/ Fiberglass | ||||
Panes | Low-e1 | Spacer | Fill | |||
Double3 | A | Any | Argon | 0.48 | 0.41 | 0.32 |
B | Any | Argon | 0.46 | 0.39 | 0.30 | |
C | Any | Argon | 0.44 | 0.37 | 0.28 | |
C | High Performance | Argon | 0.42 | 0.35 | Deemed to comply5 | |
Triple4 | A | Any | Air | 0.50 | 0.44 | 0.26 |
B | Any | Air | 0.45 | 0.39 | 0.22 | |
C | Any | Air | 0.41 | 0.34 | 0.20 | |
Any double low-e | Any | Air | 0.35 | 0.32 | 0.18 |
1 | Low-eA (emissivity) shall be 0.24 to 0.16. |
Low-eB (emissivity) shall be 0.15 to 0.08. | |
Low-eC (emissivity) shall be 0.07 or less. | |
2 | Aluminum Thermal Break = An aluminum thermal break framed window shall incorporate the following minimum design characteristics: |
a) The thermal conductivity of the thermal break material shall be not more than 3.6 Btu-in/h/ft2/°F; | |
b) The thermal break material must produce a gap in the frame material of not less than 0.210 inches; and | |
c) All metal framing members of the products exposed to interior and exterior air shall incorporate a thermal break meeting the criteria in a) and b) above. | |
3 | A minimum air space of 0.375 inches between panes of glass is required for double glazing. |
4 | A minimum air space of 0.25 inches between panes of glass is required for triple glazing. |
5 | Deemed to comply glazing shall not be used for performance compliance. |
Notes
Statutory Authority: RCW 19.27A.020, 19.27A.025 and chapters 19.27 and 34.05 RCW. 13-04-056, § 51-11C-303135, filed 2/1/13, effective 7/1/13.