ASHRAE-90.1-2022- - Page 054
Extracted Content
| Nonresidential | Residential | Semiheated |
|---|---|---|
| ** Opaque Elements** Assembly Maximum Insulation Min. R-Value | ||
| ** Opaque Elements** Assembly Maximum Insulation Min. R-Value | Assembly Maximum Insulation Min. R-Value | Assembly Maximum Insulation Min. R-Value |
| Insulation entirely above deck U-0.032 R-30_c.i._ Metal building a U-0.037 R-19 + R-11_Ls_ or R-25 + R-8_Ls_ Attic and other U-0.021 R-49 | Roofs U-0.032 R-30_c.i._ U-0.037 R-19 + R-11_Ls_ or R-25 + R-8_Ls_ U-0.021 R-49 | U-0.093 R-10_c.i._ U-0.082 R-19 U-0.034 R-30 |
| Wa Mass U-0.104 R-9.5_c.i._ Metal building U-0.060 R-0 + R-15.8_c.i._ Steel-framed U-0.064 R-13 + R-7.5_c.i._ Wood-framed and other U-0.064 R-13 + R-3.8_c.i._ or R-20 | lls, above Grade U-0.090 R-11.4_c.i._ U-0.050 R-0 + R-19_c.i._ U-0.064 R-13 + R-7.5 c.i U-0.064 R-13 + R-3.8_c.i._ or R-20 | U-0.580 NR U-0.162 R-13 U-0.124 R-13 U-0.089 R-13 |
| Wa Below-grade wall C-0.119 R-7.5_c.i._ | ll, below Grade C-0.092 R-10_c.i._ | C-1.140 NR |
| Mass U-0.057 R-14.6_c.i._ Steel joist U-0.038 R-30 Wood-framed and other U-0.033 R-30 | Floors U-0.051 R-16.7_c.i._ U-0.038 R-30 U-0.033 R-30 | U-0.107 R-6.3_c.i._ U-0.052 R-19 U-0.051 R-19 |
| Slab Unheated F-0.520 R-15 for 24 in. Heated F-0.843 R-20 for 24 in. | -on-Grade Floors F-0.520 R-15 for 24 in. F-0.688 R-20 for 48 in. | F-0.730 NR F-0.900 R-10 for 24 in. |
Swinging U-0.370 Nonswinging U-0.310 | Opaque Doors U-0.370 U-0.310 | U-0.370 U-0.360 |
| Fenestration Assembly Max. U Assembly Max. SHGC Assembly Min. VT/SHGC Nonresidential | Assembly Max. U Assembly Max. SHGC Assembly Min. VT/SHGC Residential | Assembly Max. U Assembly Max. SHGC Assembly Min. VT/SHGC Semiheated |
| Vertical Fene Fixed 0.36 0.36 1.10 (for all types) Operable 0.45 0.33 Entrance door 0.63 0.33 | _ stration_, 0% to 40% of_Wall_ 0.36 0.36 1.10 (for all types) 0.45 0.33 0.63 0.33 | 0.50 NR (for all types) NR (for all types) 0.65 0.77 |
| Skyligh All types 0.50 0.40 NR | t, 0% to 3% of_Roof_ 0.50 0.40 NR | 0.75 NR NR |
- The following definitions apply: c.i. = continuous insulation (see Section 3.2), FC = filled cavity (see Section A2.3.2.5), Ls = liner system (see Section A2.3.2.4); NR = no (insulation) requirement. a. When using the R-value compliance method for metal building roofs, a thermal spacer block is required (see Section A2.3.2).
52 ANSI/ASHRAE/IES Standard 90.1-2022 (I-P)