I am PhD student and I doing some work on grounding resistance and I
would like to develop a formula for CALCULATION OF EARTH RESISTANCE IN
MULTI-LAYER EARTH STRUCTURE. and compare it with some field
measuremnts...What do you think? Is it possible to develop such this
formula?
Just want to remind you again that my case of study (calculation of
Earth resistance for the driven rod in a horizontally stratified
multi-layer earth at non-homogeneous earth).
If any body have any papers to help or any advice please do
I would like to thank you in advance
your Ram

If your doctorate will be issued by a university with toll-free numbers on
the outside of a matchbook cover, then here is what you do:

Call any one of the dozens of Electric Utility companies, and especially the
Electric Power Research Institute, and tell them you want to borrow their
patented and trademarked programs and formulas for earth resistance in
multi-layer earth structure.

You're at least twenty years late in resolving that question. But you might
consider asking the US National Fire Protection Institute, why it's National
Electrical Code states that if 25 ohms or less cannot be achieved with a
service-entrance grounding electrode, then a second grounding electrode must
be used. (no matter if both rods have 1,000 ohms R each, just use a second
one and the inspector has to pass it).

Jack Painter
Virginia Beach, Virginia

wrote in message
oups.com...
I am PhD student and I doing some work on grounding resistance and I
would like to develop a formula for CALCULATION OF EARTH RESISTANCE IN
MULTI-LAYER EARTH STRUCTURE. and compare it with some field
measuremnts...What do you think? Is it possible to develop such this
formula?
Just want to remind you again that my case of study (calculation of
Earth resistance for the driven rod in a horizontally stratified
multi-layer earth at non-homogeneous earth).
If any body have any papers to help or any advice please do
I would like to thank you in advance
your Ram

In article .com,
wrote:

I am PhD student and I doing some work on grounding resistance and I
would like to develop a formula for CALCULATION OF EARTH RESISTANCE IN
MULTI-LAYER EARTH STRUCTURE. and compare it with some field
measuremnts...What do you think? Is it possible to develop such this
formula?
Just want to remind you again that my case of study (calculation of
Earth resistance for the driven rod in a horizontally stratified
multi-layer earth at non-homogeneous earth).
If any body have any papers to help or any advice please do
I would like to thank you in advance
your Ram


I hope your REALLY good at MultiVariable calculations. As Ground
Conductiivity has a pile of factors that are significant, and a double
pile that are slightly significant. Better get really boned up on your
Soil Chemistry, Ground Water Chemistry, Disolved Minerals, and add data
from Water Tables, and their weekly, monthly, and yearly variances.
Then think about Temp. Humidity, and the like, of the Area that you
trying to model.
Well I guess if your a PHD Candidate, you should have passed Calculus,
somewhere in the past, and maybe this is a good thesis project.

Me Good luck to you..........

Hello Ram,I am also PhD and my work is close to yours


IEEE 142
if sl
R=(p*(log(8*l/d)+log(4*l/s)-2+(s/(2*l))-((s^2)/(16*l^2))+((s^4)/(512*l^4))))/(2*n*pi*l)

if sl
R=(p*((log(8*l/d))-1))/(2*n*pi*l)+(p*(1-((l^2)/(3*s^8))+((2/5)*((l^4)/(s^4)))))/(2*n*pi*s)

What does this have to do with this newgroup?

wrote in message
oups.com...
I am PhD student and I doing some work on grounding resistance and I
would like to develop a formula for CALCULATION OF EARTH RESISTANCE IN
MULTI-LAYER EARTH STRUCTURE. and compare it with some field
measuremnts...What do you think? Is it possible to develop such this
formula?
Just want to remind you again that my case of study (calculation of
Earth resistance for the driven rod in a horizontally stratified
multi-layer earth at non-homogeneous earth).
If any body have any papers to help or any advice please do
I would like to thank you in advance
your Ram