ASHRAE-90.1-2022- - Page 264

Extracted Content

Table A8.1-2 Assembly SHGCs and Assembly Visible Transmittances (VTs) for Unlabeled Skylights

Glass Type	Glazing Type: Number of Glazing Layers Number and Emissivity of Coatings (Glazing is Glass Except where Noted)	Unlabeled Skylights (Includes Glass/Plastic, Flat/Domed, Fixed/Operable)	Col4	Col5	Col6	Col7	Col8	Col9
Glass Type	Glazing Type: Number of Glazing Layers Number and Emissivity of Coatings (Glazing is Glass Except where Noted)	Frame:	Metal without Thermal Break	Metal without Thermal Break	Metal with Thermal Break	Metal with Thermal Break	Wood/Vinyl/ Fiberglass	Wood/Vinyl/ Fiberglass
Glass Type	Glazing Type: Number of Glazing Layers Number and Emissivity of Coatings (Glazing is Glass Except where Noted)	Characteristic:	SHGC	VT	SHGC	VT	SHGC	VT
Clear	Single glazing, 1/8 in. glass		0.82	0.76	0.78	0.76	0.73	0.73
Clear	Single glazing, 1/4 in. glass		0.78	0.75	0.74	0.75	0.69	0.72
Clear	Single glazing, acrylic/polycarbonate		0.83	0.92	0.83	0.92	0.83	0.92
Clear	Double glazing		0.68	0.66	0.64	0.66	0.59	0.64
Clear	Double glazing,e = 0.40 on surface 2 or 3		0.71	0.65	0.67	0.65	0.62	0.63
Clear	Double glazing,e = 0.20 on surface 2 or 3		0.66	0.61	0.62	0.61	0.57	0.59
Clear	Double glazing,e = 0.10 on surface 2 or 3		0.59	0.63	0.55	0.63	0.51	0.61
Clear	Double glazing, acrylic/polycarbonate		0.77	0.89	0.77	0.89	0.77	0.89
Clear	Triple glazing		0.60	0.59	0.56	0.59	0.52	0.57
Clear	Triple glazing,e = 0.40 on surface 2, 3, 4, or 5		0.64	0.60	0.60	0.60	0.56	0.57
Clear	Triple glazing,e = 0.20 on surface 2, 3, 4, or 5		0.59	0.55	0.55	0.55	0.51	0.53
Clear	Triple glazing,e = 0.10 on surface 2, 3, 4, or 5		0.54	0.56	0.50	0.56	0.46	0.54
Clear	Triple glazing,e = 0.40 on surfaces 3 and 5		0.62	0.57	0.58	0.57	0.53	0.55
Clear	Triple glazing,e = 0.20 on surfaces 3 and 5		0.56	0.51	0.52	0.51	0.48	0.49
Clear	Triple glazing,e = 0.10 on surfaces 3 and 5		0.47	0.54	0.43	0.54	0.40	0.52
Clear	Triple glazing, acrylic/polycarbonate		0.71	0.85	0.71	0.85	0.71	0.85
Clear	Quadruple glazing,e = 0.10 on surfaces 3 and 5		0.41	0.48	0.37	0.48	0.33	0.46
Clear	Quadruple glazing, acrylic/polycarbonate		0.65	0.81	0.65	0.81	0.65	0.81
Tinted	Single glazing, 1/8 in. glass		0.70	0.58	0.66	0.58	0.62	0.56
Tinted	Single glazing, 1/4 in. glass		0.61	0.45	0.56	0.45	0.52	0.44
Tinted	Single glazing, acrylic/polycarbonate		0.46	0.27	0.46	0.27	0.46	0.27
Tinted	Double glazing		0.50	0.40	0.46	0.40	0.42	0.39
Tinted	Double glazing,e = 0.40 on surface 2 or 3		0.59	0.50	0.55	0.50	0.50	0.48
Tinted	Double glazing,e = 0.20 on surface 2 or 3		0.47	0.37	0.43	0.37	0.39	0.36
Tinted	Double glazing,e = 0.10 on surface 2 or 3		0.43	0.38	0.39	0.38	0.35	0.37
Tinted	Double glazing, acrylic/polycarbonate		0.37	0.25	0.37	0.25	0.37	0.25
Tinted	Triple glazing		0.42	0.22	0.37	0.22	0.34	0.21
Tinted	Triple glazing,e = 0.40 on surface 2, 3, 4, or 5		0.53	0.45	0.49	0.45	0.45	0.44
Tinted	Triple glazing,e = 0.20 on surface 2, 3, 4, or 5		0.42	0.33	0.38	0.33	0.35	0.32
Tinted	Triple glazing,e = 0.10 on surface 2, 3, 4, or 5		0.39	0.34	0.35	0.34	0.31	0.33
Tinted	Triple glazing,e = 0.40 on surfaces 3 and 5		0.51	0.43	0.47	0.43	0.43	0.42
Tinted	Triple glazing,e = 0.20 on surfaces 3 and 5		0.40	0.31	0.36	0.31	0.32	0.29
Tinted	Triple glazing,e = 0.10 on surfaces 3 and 5		0.34	0.32	0.30	0.32	0.27	0.31
Tinted	Triple glazing, acrylic/polycarbonate		0.30	0.23	0.30	0.23	0.30	0.23
Tinted	Quadruple glazing,e = 0.10 on surfaces 3 and 5		0.30	0.29	0.26	0.29	0.23	0.28
Tinted	Quadruple glazing, acrylic/polycarbonate		0.27	0.25	0.27	0.25	0.27	0.25

262 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)