IEEE Standards IEEE Std 442-2017 pdf free download – IEEE Guide for Thermal Resistivity Measurements of Soils and Backfill Materials IEEE Std 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.1 show diagrams of the system required to measure thermal resistivity in... 02-25 Download Now