Insulation R Values: soil
Insulation R-values and thermal conductivity data from NIST SRD 81 — covers fiberglass, foam, cellulose, mineral wool, and other building insulation materials
| material id | record id | date | delta x (in) | density (lb/ft3) | description | form | k w mk (W/mK) | material | mean temp (F) | r value per inch (ft2hF/BTU/in) | rsi per inch (m2K/W/in) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| soil | 221 | 11/13/1940 | 1.499 | 119 | Plain soil and clay, rammed earth series | Loose | 6.33 | Soil | 88.9 | 0.022785 | 0.004013 |
| soil | 225 | 12/3/1940 | 1.457 | 119 | Plain soil and clay, rammed earth series | Loose | 5.762 | Soil | 76.2 | 0.025031 | 0.004408 |
| soil | 232 | 2/10/1941 | 1.5 | 134 | Terracrete rammed earth | Loose | 10.66 | Soil | 75.7 | 0.01353 | 0.002383 |
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