standards and guidelines for communication sites - Radio And ...
standards and guidelines for communication sites - Radio And ... standards and guidelines for communication sites - Radio And ...
SITE PREPARATION CONSIDERATIONS APPENDIX B: SOIL RESISTIVITY MEASUREMENTS TESTER C1 P1 P2 C2 FIGURE B-4 ROD ARRANGEMENT AND SPACING B.3.3.3 SAMPLES REQUIRED TO DEVELOP ACCURATE SITE RESISTIVITY PROFILE Uniform 229 mm (9 in.) driven depth into surface Uniform spacing of rods in straight line, starting at 1.52 m (5 ft.) Because stray currents, buried water pipes, cable sheaths and other factors usually interfere and distort the readings, measurements should be taken along at least three directions. Figure B-5 shows the recommended multiple sampling pattern to develop an accurate profile. Note that the more divergent the samples taken, the more accurate the generated soil model will be. B-8 68P81089E50-B 9/1/05
STANDARDS AND GUIDELINES FOR COMMUNICATION SITES SITE PREPARATION CONSIDERATIONS Property Line First Testing Location FIGURE B-5 RECOMMENDED MULTIPLE SAMPLING PATTERN ACROSS SITE B.3.3.4 SOIL RESISTIVITY MEASUREMENT PROCEDURE Perform the following procedure to obtain soil resistivity readings. WARNING Second Testing Location Fourth Testing Location Fifth Testing Location Follow the manufacturer's warning and caution information when using the ground resistance tester. Follow furnished instructions when inserting and removing test rods into soil. 1. On tester, verify that the jumper strap between the C1 and P1 terminals is disconnected (if applicable). 2. Starting at the “First Test Location” shown in Figure B-5, drive four test rods into the soil to a depth of 229 mm (9 in.), in a straight line, and spaced 1.52 m (5 ft.) apart (as shown in Figure B-4). NOTE: The test rods must be connected in the order specified in Step 3. If the test rods are connected incorrectly an inaccurate reading will result. 3. Using test leads, connect the C1, P1, P2 and C2 terminals to their respective test rods, as shown in Figure B-4. 4. Turn the tester on. Press the test button and read the display. Third Testing Location NOTE: If the reading is not stable or displays an error indication, double-check the connection and the meter range setting. If the range is correct, try adjusting the test current. An effective way of decreasing the test rod resistance to ground is by pouring water around the rod. The addition of moisture is insignificant; it will only achieve a better electrical connection and will not influence the overall results. 68P81089E50-B 9/1/05 B-9
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- Page 405 and 406: APPENDIX A ELECTROMAGNETIC ENERGY I
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- Page 433 and 434: APPENDIX B SOIL RESISTIVITY MEASURE
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- Page 467 and 468: APPENDIX C PROTECTING AGAINST ELECT
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- Page 471 and 472: APPENDIX D GROUNDING (EARTHING) ELE
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STANDARDS AND GUIDELINES FOR COMMUNICATION SITES SITE PREPARATION CONSIDERATIONS<br />
Property Line<br />
First Testing<br />
Location<br />
FIGURE B-5 RECOMMENDED MULTIPLE SAMPLING PATTERN ACROSS SITE<br />
B.3.3.4 SOIL RESISTIVITY MEASUREMENT PROCEDURE<br />
Per<strong>for</strong>m the following procedure to obtain soil resistivity readings.<br />
WARNING<br />
Second Testing<br />
Location<br />
Fourth Testing<br />
Location<br />
Fifth Testing<br />
Location<br />
Follow the manufacturer's warning <strong>and</strong> caution in<strong>for</strong>mation when using the ground<br />
resistance tester. Follow furnished instructions when inserting <strong>and</strong> removing test rods<br />
into soil.<br />
1. On tester, verify that the jumper strap between the C1 <strong>and</strong> P1 terminals is disconnected (if<br />
applicable).<br />
2. Starting at the “First Test Location” shown in Figure B-5, drive four test rods into the soil to a depth<br />
of 229 mm (9 in.), in a straight line, <strong>and</strong> spaced 1.52 m (5 ft.) apart (as shown in Figure B-4).<br />
NOTE: The test rods must be connected in the order specified in Step 3. If the test rods are connected<br />
incorrectly an inaccurate reading will result.<br />
3. Using test leads, connect the C1, P1, P2 <strong>and</strong> C2 terminals to their respective test rods, as shown in<br />
Figure B-4.<br />
4. Turn the tester on. Press the test button <strong>and</strong> read the display.<br />
Third Testing<br />
Location<br />
NOTE: If the reading is not stable or displays an error indication, double-check the connection <strong>and</strong> the meter<br />
range setting. If the range is correct, try adjusting the test current. An effective way of decreasing the<br />
test rod resistance to ground is by pouring water around the rod. The addition of moisture is<br />
insignificant; it will only achieve a better electrical connection <strong>and</strong> will not influence the overall results.<br />
68P81089E50-B 9/1/05 B-9