7232c9f4_ing_Electrodes___E_S_Grounding__Driven_Rod
[0] Life Expectancy [Advanced Driven Rod] Average15–20 years [Grounding Plate] Poor5-10 years [Concrete Encased Electrode] Average *15-20 years [Building Foundation] Above Average *20-30 years [Water Pipe] Below Average*10-15 years [Electrolytic Electrode] Excellent30-50 years [Driven Rod] 
Poor5–10 years
P o o r
H i g h l y A f f e c t e d
R T G W o r s e n s
A v e r a g e
P o o r 5 – 1 0 y e a r s
Different Types of Grounding Electrodes - E&S Grounding
Driven Rod