WAC 51-11R-30315. Table R303.1.3(5) — Small business compliance default table

TABLE R303.1.3(5) SMALL BUSINESS COMPLIANCE TABLE DEFAULT U -FACTORS FOR VERTICAL FENESTRATION Vertical Fenestration Description Frame Type Any Frame Aluminum Thermal Break 2 Wood/Vinyl/ Fiberglass Panes Low-e 1 Spacer Fill Double 3 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 comply 5 Triple 4 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 Vertical Fenestration Description Frame Type Any Frame Aluminum Thermal Break 2 Wood/Vinyl/ Fiberglass Panes Low-e 1 Spacer Fill Double 3 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 comply 5 Triple 4 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/ft 2 /°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. 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/ft 2 /°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.