Babk Jamali

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A transient injection method was used to simultaneously measure the time variation of footing impedance and soil resistivity on a series of 345-kV steel pole towers. For each tower, the ratio of transient resistivity to impedance, giving an effective tower perimeter, reached an asymptote by 500 ns. The soil resistivity estimates were log-normally(More)
A sample box and ac resistance meter find contamination in surface stone. Commercial dc resistance meters verify grid integrity but have short leads and experience ac interference. A custom built micro ohmmeter addresses these deficiencies. Wenner, Schlumberger and Palmer resistivity tests differ in their ability to resolve a highly resistive deep soil(More)
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