ASHRAE-90.1-2022- - Page 252

Extracted Content

Table A3.4.3.1 Assembly U-Factors for Wood-Frame Walls

SO DE-RATE PRIOR TO ENTERING.

Framing Type and

Spacing

Width (Actual

Depth)

Cavity Insulation R-Value: Rated (Effective Installed [see Table A9.4.3])	Overall U-Factor for Entire Base Wall Assembly	Col3	Col4	Col5	Col6	Col7	Col8	Col9	Col10	Col11	Col12	Col13	Col14	Col15	Col16	Col17	Col18	Col19	Col20	Col21
Cavity Insulation ** R-Value: Rated (Effective** Installed [see Table A9.4.3])	Overall U-Factor for Entire Base Wall Assembly	**R-1.00 **	**R-2.00 **	**R-3.00 **	**R-4.00 **	**R-5.00 **	**R-6.00 **	**R-7.00 **	**R-8.00 **	**R-9.00 **	**R-10.00 **	**R-11.00 **	**R-12.00 **	**R-13.00 **	**R-14.00 **	**R-15.00 **	**R-20.00 **	**R-25.00 **	**R-30.00 **	**R-35.00 **
Cavity Insulation ** R-Value: Rated (Effective** Installed [see Table A9.4.3])	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21	R-21 IS 5.5” THICK AND GOES IN 5.5” STUD SO R-21

3.5 in. depth	None (0.0)	0.292	0.223	0.181	0.152	0.132	0.116	0.104	0.094	0.086	0.079	0.073	0.068	0.064	0.060	0.056	0.053	0.042	0.035	0.030	0.026	0.023
3.5 in. depth	R-11 (11.0)	0.096	0.087	0.079	0.073	0.068	0.063	0.059	0.056	0.053	0.050	0.048	0.046	0.044	0.042	0.040	0.038	0.032	0.028	0.024	0.022	0.020
3.5 in. depth	R-13 (13.0)	0.089	0.080	0.074	0.068	0.063	0.059	0.056	0.053	0.050	0.047	0.045	0.043	0.041	0.040	0.038	0.037	0.031	0.027	0.024	0.021	0.019
3.5 in. depth	R-15 (15.0)	0.083	0.075	0.069	0.064	0.060	0.056	0.053	0.050	0.047	0.045	0.043	0.041	0.039	0.038	0.036	0.035	0.030	0.026	0.023	0.020	0.019
5.5 in.depth	R-19 (18.0)	0.067	0.062	0.058	0.054	0.051	0.048	0.046	0.044	0.042	0.040	0.038	0.037	0.036	0.034	0.033	0.032	0.027	0.024	0.021	0.019	0.018
5.5 in.depth	R-21 (21.0)	0.063	0.058	0.054	0.051	0.048	0.045	0.043	0.041	0.039	0.038	0.036	0.035	0.034	0.032	0.031	0.030	0.026	0.023	0.021	0.019	0.017
+ R-10 headers	R-19 (18.0)	0.063	0.059	0.055	0.052	0.049	0.047	0.045	0.043	0.041	0.039	0.038	0.036	0.035	0.034	0.033	0.031	0.027	0.024	0.021	0.019	0.017
+ R-10 headers	R-21 (21.0)	0.059	0.055	0.051	0.049	0.046	0.044	0.042	0.040	0.038	0.037	0.035	0.034	0.033	0.032	0.031	0.030	0.026	0.023	0.020	0.018	0.017

Wood Studs at 24 in. on Center

3.5 in. depth	None (0.0)	0.298	0.227	0.183	0.154	0.133	0.117	0.105	0.095	0.086	0.079	0.074	0.068	0.064	0.060	0.057	0.054	0.042	0.035	0.030	0.026	0.023
3.5 in. depth	R-11 (11.0)	0.094	0.085	0.078	0.072	0.067	0.062	0.059	0.055	0.052	0.050	0.047	0.045	0.043	0.041	0.040	0.038	0.032	0.027	0.024	0.022	0.019
3.5 in. depth	R-13 (13.0)	0.086	0.078	0.072	0.067	0.062	0.058	0.055	0.052	0.049	0.047	0.045	0.043	0.041	0.039	0.038	0.036	0.031	0.026	0.023	0.021	0.019
3.5 in. depth	R-15 (15.0)	0.080	0.073	0.067	0.062	0.058	0.055	0.052	0.049	0.046	0.044	0.042	0.040	0.039	0.037	0.036	0.035	0.029	0.026	0.023	0.020	0.018
5.5 in. depth	R-19 (18.0)	0.065	0.060	0.056	0.053	0.050	0.047	0.045	0.043	0.041	0.039	0.038	0.036	0.035	0.034	0.033	0.032	0.027	0.024	0.021	0.019	0.018
5.5 in. depth	R-21 (21.0)	0.060	0.056	0.052	0.049	0.046	0.044	0.042	0.040	0.038	0.037	0.036	0.034	0.033	0.032	0.031	0.030	0.026	0.023	0.020	0.018	0.017
+ R-10 headers	R-19 (18.0)	0.062	0.058	0.054	0.051	0.048	0.046	0.044	0.042	0.040	0.039	0.037	0.036	0.034	0.033	0.032	0.031	0.027	0.024	0.021	0.019	0.017
+ R-10 headers	R-21 (21.0)	0.057	0.053	0.050	0.047	0.045	0.043	0.041	0.039	0.037	0.036	0.035	0.033	0.032	0.031	0.030	0.029	0.025	0.023	0.020	0.018	0.017