Key words: permafrost soil, coefficient of heat conduction, heat capacity, direct measurements, thermal characteristic soil.
The thermal characteristic materials depend from many factors. Geological engineering survey tests result in important thermal characteristic, such coefficient of heat conduction and heat capacity. For construction I and II level of responsibility coefficient of heat conduction and heat capacity have to be defined direct measurements as they provide more objective information, than value accepted on Set of Rules 25.13330.2012. But in certain cases, it may identify dependent thermal characteristic of soils.
