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Engineering ToolBox > Building Elements - Heat Loss and Thermal Resistivity
The thermal resistance in some common building elements can be found in the table below. The values can be used to calculate Heat Loss from Buildings.
| Thermal Resistance Inside and Outside Walls | Resistivity (m2K/W) | ||
| Ri = 1/fi 1) | Ro = 1/fo 1) | Ri+ Ro | |
| Building parts against the surrounding environment | 0.13 | 0.04 | 0.17 |
| Building parts others | 0.13 | 0.13 | 0.26 |
| Thermal Resistance for Building Elements against Earth | Resistivity (m2K/W) |
| Re | |
| Floors 0.5 m above to 0.5 below earth bound, 0-1 m from inside outside wall - without cold bridge protection | 0.2 |
| Floors 0.5 m above to 0.5 below earth bound - with cold bridge protection | 1.0 |
| Centerfield above 1 m from inside outside wall | 1.5 |
| Basement floors 0.5 m below earth bound | 2.0 |
| Basement walls under earth bound, the whole wall against the earth, where h is the basement floors level below the earth bound (m) | 0.2 + 0.3 h |
| Basement walls under earth bound, basement floor against the earth and partly against air | 2.0 |