Before an electrical earthing / lightning protection grounding system can be installed a few other activities must first be undertaken. Historically installation companies may have offered to drive a single earth rod and take a range of readings from it at various depths as it is driven into the ground. To say that this is better than nothing, or a reasonable compromise, is comparable to saying that keeping your fingers crossed will ensure that you win the national lottery.
The only thorough, scientific, and logical method of determining an electrical earthing system is to undertake a complete soil resistivity survey to an approved methodology. Earthing Services does not endorse anything other than the professional approach when obtaining information that will provide the basis for decisions on electrical earthing systems. The importance of this variety of life saving, critical safety system, demands that determinations on requirements are based upon accurate, meaningful, and useful data, which is exactly what Earthing Services provides.