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standards and guidelines for communication sites - Radio And ...

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SITE PREPARATION CONSIDERATIONS APPENDIX B: SOIL RESISTIVITY MEASUREMENTS<br />

COMMUNICATIONS<br />

SITE BUILDING<br />

4. Single rod resistance of 15 Ω is then multiplied by 18% (0.18) to obtain the effective resistance of<br />

the system:<br />

15Ω × 0.18= 2.7 Ω<br />

In this example, effective overall resistance of the proposed system would be 2.7 Ω.<br />

TOWER<br />

GROUND RODS (8 TOTAL)<br />

ADJACENT<br />

BUILDINGS<br />

FIGURE B-8 EXAMPLE OF MULTIPLE GROUNDING ELECTRODES IN STRAIGHT LINE<br />

B-20 68P81089E50-B 9/1/05

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