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raghu.inagandla
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Join Date: Aug 2010
Posts: 1

Earth Pit in Rock Area

08/09/2010 1:29 AM

how it is possible of laying earth pit in rock area
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dvmdsc
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Join Date: Mar 2010
Location: In the pool because it is too hot.
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#1

Re: earth pit in rock area

08/09/2010 1:52 AM

drilling deep enough.

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pnaban
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Join Date: Jun 2010
Location: srilanka
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#2

Re: Earth Pit in Rock Area

08/10/2010 11:38 AM

If cutting deep holes is impracticable,try to cut a trench long enough and lay an earth tape and cover with good soil/recommended earth compound.By measuring the resistance you can decide whether the trench is long enough.

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PeterT
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Join Date: May 2010
Location: Liverpool, NY
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#3

Re: Earth Pit in Rock Area

08/11/2010 3:45 PM

See this thread for suggestions on reducing ground grid resistance, especially by using ground enhancement materials.

http://cr4.globalspec.com/thread/58267/Grounding-Under-Below-10-Ohms

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