ASHRAE-90.1-2022- - Page 257

Extracted Content

Table A5.2.3.1 Assembly U-Factors for Mass Floors

Framing

Type

Cavity
Insulation R-
Value: Rated
(Effective
Installed)
Overall
U-Factor
for Entire
Base Floor
Assembly
Col3Col4Col5Col6Col7Col8Col9Col10Col11Col12Col13Col14Col15Col16Col17Col18Col19Col20Col21
Cavity
Insulation R-
Value: Rated
(Effective
Installed)
Overall
U-Factor
for Entire
Base Floor
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 **

Concrete Floor with Rigid Foam

and Spacing

Width (Actual

Depth)

None (0.0) 0.322 0.243 0.196 0.164 0.141 0.123 0.110 0.099 0.090 0.083 0.076 0.071 0.066 0.062 0.058 0.055 0.043 0.036 0.030 0.026 0.023

Concrete Floor with Pinned Boards

Col1R-4.2 (4.2)0.1370.1210.1080.0970.0890.0810.0750.0700.0650.0610.0580.0550.0520.0490.0470.0450.0370.0310.0270.0240.021
R-6.3 (6.3)0.1070.0960.0880.0810.0750.0700.0650.0610.0580.0540.0520.0490.0470.0450.0430.0410.0340.0290.0250.0230.020
R-8.3 (8.3)0.0870.0800.0740.0690.0650.0610.0570.0540.0510.0490.0470.0450.0430.0410.0390.0380.0320.0270.0240.0220.019
R-10.4(10.4)0.0740.0690.0640.0600.0570.0540.0510.0490.0460.0440.0420.0410.0390.0380.0360.0350.0300.0260.0230.0210.019
R-12.5 (12.5)0.0640.0600.0570.0540.0510.0480.0460.0440.0420.0410.0390.0380.0360.0350.0340.0330.0280.0250.0220.0200.018
R-14.6 (14.6)0.0560.0530.0510.0480.0460.0440.0420.0400.0390.0370.0360.0350.0340.0330.0320.0310.0270.0230.0210.0190.017
R-16.7 (16.7)0.0510.0480.0460.0440.0420.0400.0390.0370.0360.0350.0340.0320.0310.0300.0300.0290.0250.0220.0200.0180.017

Concrete Floor with Spray-On Insulation

1 in.R-4 (4.0)0.1410.1230.1100.0990.0900.0830.0760.0710.0660.0620.0580.0550.0520.0500.0470.0450.0370.0310.0270.0240.021
2 in.R-8 (8.0)0.0900.0830.0760.0710.0660.0620.0580.0550.0520.0500.0470.0450.0430.0410.0400.0380.0320.0280.0240.0220.020
3 in.R-12 (12.0)0.0660.0620.0580.0550.0520.0500.0470.0450.0430.0410.0400.0380.0370.0360.0340.0330.0280.0250.0220.0200.018
4 in.R-16 (16.0)0.0520.0500.0470.0450.0430.0410.0400.0380.0370.0360.0340.0330.0320.0310.0300.0290.0260.0230.0200.0180.017
5 in.R-20 (20.0)0.0430.0410.0400.0380.0370.0360.0340.0330.0320.0310.0300.0290.0280.0280.0270.0260.0230.0210.0190.0170.016
6 in.R-24 (24.0)0.0370.0360.0340.0330.0320.0310.0300.0290.0280.0280.0270.0260.0260.0250.0240.0240.0210.0190.0180.0160.015