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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 t (F) | 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) | standard | test method |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| soil | 952 | 7/16/1954 | 18.61 | 1.0154 | 65.55 | Dirt | Loose | 1.5516 | Soil | 128.13 | 0.092954 | 0.01637 | NIST SRD 81 API | ASTM C 177 |
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