Bobbed my Vaquero and Cortes over the concrete floor, got a very strong positive or neg. response. Ground balancing was able to tune out the floor, got almost no response. With the floor tuned out I then placed a clad dime down and swept over it in All Metal mode and then in Disc.mode. In both modes with good GB, detection depth was about half of air test depth for the dime. Then I turned the GB knob toward neg., then toward positive and again swept over the dime. Detection depth remained the same in both modes, no loss of depth when getting a strong positive or neg. reaction from the floor. But the floor was giving loud false signals in All Metal mode and a some in Disc. mode with each sweep when not ground balanced, but I still heard the dime. Maybe GB doesn't get me more depth (?), but the test showed me it helps eliminate false signals.
Find's Treasure Forums
Welcome to Find's Treasure Forums, Guests!
You are viewing this forums as a guest which limits you to read only status.
Only registered members may post stories, questions, classifieds, reply to other posts, contact other members using built in messaging and use many other features found on these forums.
Why not register and join us today? It's free! (We don't share your email addresses with anyone.) We keep email addresses of our users to protect them and others from bad people posting things they shouldn't.
Click here to register!
Need Support Help?
Cannot log in?, click here to have new password emailed to you
Changed email? Forgot to update your account with new email address? Need assistance with something else?, click here to go to Find's Support Form and fill out the form.
Interesting ground balance test on concrete cellar floor.
- Thread starter jabbo
- Start date
Yep, with all that rebar in the floor it's a credit to the C & V that you
were able to GB them at all. And it's natural to get falsing under all
those strong iron effects as they variably override your GB setting.
You'd never encounter mineralized conditions like your floor in real
soil effects. But it's a good test of the GB circuit in those units.
..W
were able to GB them at all. And it's natural to get falsing under all
those strong iron effects as they variably override your GB setting.
You'd never encounter mineralized conditions like your floor in real
soil effects. But it's a good test of the GB circuit in those units.
..W
I went to a very trashy place to test my Compadre. It's where I take all my detectors to test them in real world conditions.
There is burried galvenized fencing at one spot. It is 1/2" between each thick strand of welded wire, making 1/2" squares. It's
from 2" to 6" deep. It was also covered with highly concentrated trash. I've used my Euro Sabre, Eldorado, Garrett 500 as
well as other MDs on this same spot. Could not detect anything in that spot but some broken responses and fence until I
used my Compadre on it. Then all the targets on the fencing came to life. I found a real nice piece just 4" deep and laying
right on the fence. I've been impressed with the Compadre ever sence.
HH,
There is burried galvenized fencing at one spot. It is 1/2" between each thick strand of welded wire, making 1/2" squares. It's
from 2" to 6" deep. It was also covered with highly concentrated trash. I've used my Euro Sabre, Eldorado, Garrett 500 as
well as other MDs on this same spot. Could not detect anything in that spot but some broken responses and fence until I
used my Compadre on it. Then all the targets on the fencing came to life. I found a real nice piece just 4" deep and laying
right on the fence. I've been impressed with the Compadre ever sence.
HH,
I was just about to say that, on your behalf, Jabbo...
It can only be a presumption that a slab MAY have rebar, or even mesh.
New, or older residence, because you had not even mentioned that!
Here's the story, from my construction experience...
I use rebar in footings and foundations. Never, in a slab for residential loading.
Wire mesh does nothing for the strength of a slab. It only keeps the pieces from floating away when the slab cracks.
I have poured residential slabs and NOT used mesh, (which code requires in my area), and instead used a shredded fiberglass strand product, added in the mix. THIS method also meets code, for a new construction residential slab.
If I were doing a remodel, and sprucing up a dirt-floored basement area for a client, sans gubment permits, I might not use any reinforcement or mesh, as it would accomplish no more than increase costs with zero appreciable benefit to the client.
That being said, I'd GB elsewhere, and re-check in AM to determine if any iron was there.
I've seen everything under the sun set in pours that someone hoped might give it added strength, for whatever reason...
Of course, we're interested in whatever might be just underneath the substrate surface, in the form of a relic, or cache...
Still lookin' for Jimmy?
HH
It can only be a presumption that a slab MAY have rebar, or even mesh.
New, or older residence, because you had not even mentioned that!
Here's the story, from my construction experience...
I use rebar in footings and foundations. Never, in a slab for residential loading.
Wire mesh does nothing for the strength of a slab. It only keeps the pieces from floating away when the slab cracks.
I have poured residential slabs and NOT used mesh, (which code requires in my area), and instead used a shredded fiberglass strand product, added in the mix. THIS method also meets code, for a new construction residential slab.
If I were doing a remodel, and sprucing up a dirt-floored basement area for a client, sans gubment permits, I might not use any reinforcement or mesh, as it would accomplish no more than increase costs with zero appreciable benefit to the client.
That being said, I'd GB elsewhere, and re-check in AM to determine if any iron was there.
I've seen everything under the sun set in pours that someone hoped might give it added strength, for whatever reason...
Of course, we're interested in whatever might be just underneath the substrate surface, in the form of a relic, or cache...
Still lookin' for Jimmy?
HH
I agree with every thing you say.
Basement floors are not load bearing structures.
The natural ground bares the load, in most cases.
No telling what is in the old slab.
I have had some good success with the Compadre
finding targets next to a pool deck that is reinforced with
numder five rebar. It's been hunted a lot. I believe I'm the first to
be able to do this. I am judging that on the targets that I
have recovered there. I'm looking for more slabs now.
Hope to have more finds in that fashion in the future.
HH,
Basement floors are not load bearing structures.
The natural ground bares the load, in most cases.
No telling what is in the old slab.
I have had some good success with the Compadre
finding targets next to a pool deck that is reinforced with
numder five rebar. It's been hunted a lot. I believe I'm the first to
be able to do this. I am judging that on the targets that I
have recovered there. I'm looking for more slabs now.
Hope to have more finds in that fashion in the future.
HH,
If it's rebar, it will sound off at the ends and may be the inter sections and bends of the rebar.
You might even be able to get a hit on each rebar as you go across it. The separation and
higher intensity may tip you off as to what it is.
If it's wire mesh, it will be less pronounced except in a few places. Those may be the ends
where the wire was cut, and corners where two or more wires end. All so, it will be more intense
where the wire over laps. The over all interference will be harder to separate than rebar, and less
regular.(if that makes sense)
I can usually tell. I try to visualize the reinforcement. I use this technique when trying to hunt on
slabs that have been covered by dirt. If I try to eleminate the interference with too much descremination
I loose sensativity to good targets. So it is the machine and my ear. Bare bones detecting that works.
Before I found Tesoroes, I would not even attempt it.
HH,
HH,
You might even be able to get a hit on each rebar as you go across it. The separation and
higher intensity may tip you off as to what it is.
If it's wire mesh, it will be less pronounced except in a few places. Those may be the ends
where the wire was cut, and corners where two or more wires end. All so, it will be more intense
where the wire over laps. The over all interference will be harder to separate than rebar, and less
regular.(if that makes sense)
I can usually tell. I try to visualize the reinforcement. I use this technique when trying to hunt on
slabs that have been covered by dirt. If I try to eleminate the interference with too much descremination
I loose sensativity to good targets. So it is the machine and my ear. Bare bones detecting that works.
Before I found Tesoroes, I would not even attempt it.
HH,
HH,