ASHRAE-90.1-2022- - Page 251

Extracted Content

Table A3.3.3.1 Assembly U-Factors for Steel-Frame Walls

SO DE-RATE PRIOR TO ENTERING

Framing

Type

and Spacing

Width (Actual

Depth)

Cavity
Insulation
R-Value:
Rated
(Effective
Installed [see
Table A9.2-2])
Overall
U-Factor
for Entire
Base Wall
Assembly
Col3Col4Col5Col6Col7Col8Col9Col10Col11Col12Col13Col14Col15Col16Col17Col18Col19Col20Col21Col22
Cavity
Insulation
R-Value:
Rated
(Effective
Installed [see
Table A9.2-2])
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 **
2”
**R-6.00 **
2”
**R-8.00 **
-8.4
**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 A9.2-2])
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 **
2”
2”mineral: R-8.4-8.4-8.4-8.4-8.4-8.4-8.4-8.4-8.4-8.4-8.4-8.4
Cavity
Insulation
R-Value:
Rated
(Effective
Installed [see
Table A9.2-2])
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 **
2”
2”**R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 ****R-7.00 **
3.5 in.
depth
None (0.0)0.3520.2600.2070.1710.1460.1280.1130.102Col110.0920.0840.0780.0720.0670.0630.0590.0560.0440.0360.0300.0260.023
3.5 in.
depth
R-11 (5.5)0.1320.1170.1050.0950.0870.0800.0740.0690.0690.0640.0600.0570.0540.0510.0490.0460.0440.0360.0310.0270.0240.021
3.5 in.
depth
R-13 (6.0)0.1240.1110.1000.0910.0830.0770.0710.0660.0660.0620.0590.0550.0520.0500.0480.0450.0430.0360.0300.0260.0230.021
3.5 in.
depth
R-15 (6.4)0.1180.1060.0960.0870.0800.0740.0690.0650.0650.0610.0570.0540.0510.0490.0470.0450.0430.0350.0300.0260.0230.021
6.0
in.depth
R-19 (7.1)0.1090.0990.0900.0820.0760.0710.0660.062
U-0
0.062
U-0
0.058
.0582
0.0550.0520.0500.0470.0450.0430.0410.0340.0290.0260.0230.020
6.0
in.depth
R-19 (7.1)0.1090.0990.0900.0820.0760.0710.0660.062
U-0

U-0

.0582

.0582

.0582

.0582

.0582

.0582

.0582

.0582

.0582

.0582

.0582

.0582

.0582
6.0
in.depth
R-21 (7.4)0.1060.0960.0870.0800.0740.0690.0650.061
0.061
0.057
0.0540.0510.0490.0470.0450.0430.0410.0340.0290.0250.0220.020

Steel Framing at 24 in. on Center

Steel Framing at 16 in. on Center

3.5 in.
depth
None (0.0)0.3380.2530.2020.1680.1440.1260.1120.1000.0910.0840.0770.0720.0670.0630.0590.0560.0440.0360.0300.0260.023
3.5 in.
depth
R-11 (6.6)0.1160.1040.0940.0860.0790.0730.0680.0640.0600.0570.0540.0510.0480.0460.0440.0420.0350.0300.0260.0230.021
3.5 in.
depth
R-13 (7.2)0.1080.0980.0890.0820.0750.0700.0660.0620.0580.0550.0520.0490.0470.0450.0430.0410.0340.0290.0250.0230.020
3.5 in.
depth
R-15 (7.8)0.1020.0920.0840.0780.0720.0670.0630.0590.0560.0530.0500.0480.0460.0440.0420.0400.0340.0290.0250.0220.020
6.0 in.
depth
R-19 (8.6)0.0940.0860.0790.0730.0680.0640.0600.0570.0540.0510.0480.0460.0440.0420.0410.0390.0330.0280.0250.0220.020
6.0 in.
depth
R-21 (9.0)0.0900.0830.0770.0710.0660.0620.0590.0550.0520.0500.0480.0450.0430.0420.0400.0380.0320.0280.0240.0220.020