IEEE Standards IEEE 442-2017 pdf free download – IEEE Guide for Thermal Resistivity Measurements of Soils and Backfill Materials IEEE 442-2017 pdf free download - IEEE Guide for Thermal Resistivity Measurements of Soils and Backfill Materials. 4. Test equipment Figure A.I and Figure B. I show diagrams of the system required to measure thermal resistivity in... 02-21 Download Now