ASHRAE-90.1-2022- - Page 329

Extracted Content

Opaque Elements

Performance Rating Method Building	Envelope Requirements for Climate Z
Nonresidential	Residential
Assembly Maximum	Assembly Maximum

Roofs

Walls, Above-Grade

Steel-framed U-0.124 U-0.124 U-0.352

Wall, Below-Grade

Floors

Steel-joist U-0.052 U-0.052 U-0.350

Slab-on-Grade Floors

Unheated F-0.730 F-0.730 F-0.730

Col1	Col2	Col3	Col4	Opaque Doors	Col6	Col7	Col8	Col9	Col10
Swinging	U-0.700	U-0.700	U-0.700	U-0.700	U-0.700	U-0.700	U-0.700	U-0.700	U-0.700
Nonswinging	U-1.450	U-1.450	U-1.450	U-1.450	U-1.450	U-1.450	U-1.450	U-1.450	U-1.450
Fenestration	Assembly Max. U	Assembly Max. SHGC	Visible Transmittance	Assembly Max. U	Assembly Max. SHGC	Visible Transmittance	Assembly Max. U	Assembly Max. SHGC	Visible Transmittance

Vertical Glazing, % of Wall

0% to 10.0%	U -1.22 all	SHGC -0.25 all	VT -0.28 all	U -1.22 all	SHGC -0.39 all	VT -0.43 all	U -1.22 all	SHGC -0.40 all	VT -0.44 all
10.1% to 20.0%	U_all_-1.22	SHGCall-0.25	VTall-0.28	U_all_-1.22	SHGCall-0.25	VTall-0.28	U_all_-1.22	SHGCall-0.40	VTall-0.44
20.1% to 30.0%	U_all_-1.22	SHGCall-0.25	VTall-0.28	U_all_-1.22	SHGCall-0.25	VTall-0.28	U_all_-1.22	SHGCall-0.40	VTall-0.44
30.1% to 40.0%	U_all_-1.22	SHGCall-0.25	VTall-0.28	U_all_-1.22	SHGCall-0.25	VTall-0.28	U_all_-1.22	SHGCall-0.40	VTall-0.44

Skylight All, % of Roof

0% to 2.0%	U -1.36 all	SHGC -0.36 all	VT -0.40 all	U -1.36 all	SHGC -0.19 all	VT -0.21 all	U -1.36 all	SHGC -0.55 all	VT -0.61 all
2.1%+	U_all_-1.36	SHGCall-0.19	VTall-0.21	U_all_-1.36	SHGCall-0.19	VTall-0.21	U_all_-1.36	SHGCall-0.55	VTall-0.61

ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 327