Hey guys Ben here
Geelong Cable Locations
So just out at a park today and what we're going to be doing
just going to be actually doing some GPS plotting
Now we're not surveyors
so we're not doing surveying as such
but they've got irrigation around the park
They've got an old plan that they want to update
They want to get it a bit more accurate
So that is what we are going to do, we are going to literally
pick up the points, pick up each point of where each head is
and then we are going to locate where the pipes are and then put them on a plan
So yeah, updating the plan for the council
Nothing special
As I said we're not surveyors
so it's not going to be millimeter accuracy
You do get 10cm accurate with this GPS trimble we're using
so it's good enough for what they are up to
GPS is good, as in, to pick points and put it on plans and stuff,
The issue you have is you need to get satellite access
The satellites need to see the top of the GPS
so when you're under trees, canopies, under buildings
you can't get GPS working under there
That's when you use a total station or something else
So we'll do the best we can today
Pick up everything we can
Whatever we can't do we'll come back and try another method
Anyway you might as well watch along as I do it
Yup, that is it
That's all the sprinkler heads picked up
So now we're going to go over with the ground penetrating radar
and pick up where the actual pipes themselves are
I won't be doing it today myself
Dave's got the GPR in his car
so we'll be coming back later this afternoon or tomorrow
Actually the day after tomorrow and pick up all the lines
Alright guys
Hope you're all having a good day and we'll talk soon
Bye
Hey guys
Okay so we're back out here again
You're probably watching straight after the other video
but this is the following day
It's a bit colder out here today
I've got the beanie on
and so today I'm going to do some ground penetrating radar
and I'm going to see if I can find where these irrigation pipes are
We've already checked for all the wires
We've located all the wires from the irrigation pipes
but there are pipes that are just in ground by themselves
water pipes that are plastic
So hopefully the ground penetrating radar finds them all
Let's get started
It's freezing out here today
So we're using an IDS radar
An Opera Duo is what it's called
Duo because there's two antennas in it
It's got a tough book laptop with it
what it does, it sends a signal from the antennas
to the laptop and then I see on the screen
hopefully where the pipes are
I don't need to where gloves but
That is cold so I'm going to wear some gloves
Just keeps the hands warm
Not for protection at all
There we are
worked out something already
Now the problem with ground penetrating radar is we don't know what it is
We know there's something in the ground there
We've already gone through and found there's...
so let me turn the camera around
There's a gas main right there
running that way
That's actually a transmission gas pipe
There's also another one over there
running that way
and now I've just found this one here
So there's something
going down through that
so we're going to assume it's irrigation
The only way to find out what it really is
is to dig down and confirm it
or get to an end-point and see a sprinkler head
or see something at the end
Let me show you on the screen though
Let me show you on the screen what we actually look at
Let's do a new one
so we can see the pipes going down like that
Haven't see it over here yet
so hopefully... it's right there
If this thing stays still
I'll put my foot there so it doesn't move
Right there is the pipe so I'm going to put a little dot
Over here
and another one over there
Right in the centre is where the antenna is
so either side
and then push it forward out of the way
and over here I'm going to do my little star
because that is right where it is
and then if you go back to my other marks
Some other ones there
so then I can then get my star here and go
join the dots
That is your line
It's actually starting to turn a bit
I've wonder if they've come along through here
and then got to the tree and gone around the tree
That's interesting
Let's do some more and see how we go with it
So I'm not finished yet
I'm still going
but we've got it along here
At one stage here I thought it might be going to this water meter
Even though we already located where the water meter went
That's the blue marks for the water meter that we did the other day
It actually goes past the front of it
It keeps going, it keeps going there
but what I'm going to do now is grab the locator out
So we know for a fact there's a line there
We know for a fact there's a pipe there
I'm going to place the transmitter down on the line
and see if we get a signal from it
I don't reckon I will but I'm going to try anyway
because if it is conductive it's going to be a lot easier and a lot quicker to locate
So all we do is we literally
set up the frequency
and walk along and try to find the exact same frequency
over the line we've already located
I know there's two steel gas pipes in the same vicinity
but I want to find this pipe
I want to the find a signal on the line I've already located
If I can find it on that exact line then we're all good
If I find it somewhere else then I'm like...
Then I know I've jumped on to something else
Have a look
There's the answer
Nothing at all
so it is a plastic pipe in the area
Alright we'll get the radar and keep on moving
Okay that is it
Let me show you what I've found
So I haven't been up that way yet, I still have to go that way
I've got the pipe from here
Over here you've got gas and another gas pipe over this way
and power over there as well but
at least now we can tell them there's a water pipe through here
Keep going
So yeah that is it
That is one irrigation pipe found
of one part of the park
We still have the other part of the park to go
and it should be another
Actually I don't know how many other it should be
Another six or seven pipes laying here we have to find
so we'll keep going
Okay, let's go
So what's better than one guy with a ground penetrating radar walking along?
Two guys with ground penetrating radar walking along
Okay that's it
I've pretty much done all I can do with the radar today
so what I'm going to now
I'm going to grab the GPS out
and I will start...
picking up all those dots I just put down
so...
I worked out some of them were irrigation
Others I'm not to sure about
A few unknowns there
Well with GPS everything is unknown until you get to an end point
until you actually expose it
GPS?... GPR everything is unknown
Alright you might as well come for a walk and see how we go