Earth Pit Checking

The procedure and drawing would be in the specification controlling the earth pit construction in your local.

To answer your stated question, NO!! Anyone cannot and should not be giving you an earth pit checking procedure. You need to get this document from the correct individuals for your location, not from anyone you bump into on the web.

Likely you will need at least two different sets of documentation. One document set represents what you have or will have. This will either be your building design prints (hopefully with an official inspection approval that the plans reflect the actual construction) or an "in situ" inspection of what can be easily observed and tested. The other document set will be the local code requirements at the time of installation. From the quality of your question, I suspect that you should also hire a qualified individual to be your advocate on site.

Visit www.megger.com; And, download a publication called "Down to Earth"; Study it carefully; you will never have another doubt on earth resistance measurement.

Indian Standard 3043 comes to mind.