Hi. I'm Rami Tamimi. Today we're going to be talking about stake
outs and the procedure that we must take in order to calculate our coordinates in the
office and stake them out in the field for our construction needs. [♫Music♫]
Today we're going to be staking out a building. Now this building has six corners to it and
at every corner, there are two ten foot offsets. Let's take a look at my computer screen, and
see what I'm talking about. Right here is the building that I'm referring
to. Points and circles here are our control network. We're just gonna have two control points. One on one and one on two. This L shape right here are the corners of
our building. Points five, seven, eleven, twelve, fourteen
and eight are the physical corners of the building. All the offsets with exception to point number
two and point number seventeen are ten feet away from the point that they're referencing. So one and four are referencing five. And they're ten feet away. Six and nine are ten feet away and referencing
seven. Because L is an inside corner, its offsets
are gonna be variable. Now this is a project where we're going to
assume a coordinate system. Your control points may already have coordinates
that you're going to be using. However, we're just gonna go ahead and assume
that the northing of point number 101 is five thousand and that the easting is ten thousand. Now, looking at these plans, all we have to
do is very simple addition. We're gonna go ahead and calculate the coordinates
of these points and then we're going to input them into our data collector so that we can
begin surveying. One thing that this map is missing is that
there's no north arrow, so I'm go ahead and make the assumption that north is up. All right, with that assumption made, we see
that we're going north 55 feet but we're not going east or west anywhere. So our easting is going to stay the same. And our northing is gonna go up 55 feet. So the new northing becomes 5055 and the easting
is at ten thousand. All right we're gonna go ahead and take a
look at our points. We're gonna jump around a little bit but based
off of what we're working with, the easiest way to calculate these coordinates is to go
by columns or rows and just work your way across. When I look at number three, I can see that
again, it's on the same line. So I'm just gonna say that the easting is
also ten thousand. The building dimension is 35. There's ten feet to the north and ten feet
to the south to get us to 55 between the control points. Therefore, the distance between 101 and three
is ten feet. So our northing is going to be 5010. Now let's take a look at two. It looks like the dimension between three
and two is eleven feet. So all we're gonna have to do is add eleven
feet to the northing of three. So that puts us at 5021. Easting is the same. So we can just keep that at ten thousand. All right, the distance between two and one
is 24 feet so we're just gonna go ahead and add 24 to the northing of two. So that gives us 5045. And the easting is still ten thousand because
it's in the same column. Great. We got the first column. Now let's go ahead and calculate the next
column. So when I shift over here, we look at point
number 16. Sixteen is along the same northing line. We're not going up in any way. So the northing will be five thousand. So let's go ahead and write five thousand
and this is also shifting at ten feet, so we can now add the easting at 10,010. The next point we're gonna look at is point
number eight. It looks like we're going to go up and this
is the same easting because we're not going left to right from sixteen, but we're just
going up ten feet so point number eight is gonna be 5010 and the easting will just be
10,010. We go all the way up to point number five. Between eight and five is 35 feet. So we're going to add 35 feet to the northing
of eight so that puts us at 5045. And that makes sense, because we're in line
here with one and it has the same northing as one. Easting stays the same as eight, 10,010. Finally, point number four. We're ten feet north of point number five
so we're just gonna add ten feet. So that's 5055. And the easting is the same at 10,010. All right? Let's do the third column. So for point number seventeen, we're along
the line of sixteen and 101 so we're gonna have the same northing of 5000. So we can write 5000 here. Now we are moving east 19.67 feet from point
number sixteen, so I'm gonna take the easting of sixteen and add 19.67. So we're at 10029.67. So because of the shift in the north of 19.67,
that's going to be the easting of point number seventeen. Let's go up to number eleven. Eleven is gonna have the same easting because
it's not going left or right of seventeen. So we can write the easting down 10029.67. And it looks like we're going north ten feet
and then another eleven feet, so we're gonna be going north 21 and the northing from point
number eleven, so that's going to be 5021. The next point is number seven. We're gonna add 24 feet to the northing. So the northing will be 5045. The easting stays the same -- 10029.67 and
point number six, we're gonna add another ten feet so it's gonna be 5055. Easting is the same. We'll come over here to point number 18. Eighteen, the northing is gonna be 5000 because
it's in line with the other points that are 5000. We're moving over 10.33 so that means that
our easting is going to be 10040. The next point is point fourteen. We're just literally going north ten feet. So it's going to be 5010. Easting stays the same as 18 -- 10040. Next, we're gonna go north eleven feet to
get to point number twelve. So the northing is going to be 5021. And the easting stays the same at 10040. Next we're going to point number ten so you're
gonna just add another ten feet and we have 5031, 10040. The last column -- point number fifteen is
already ten feet off of our initial 5000 line so that means the northing is going to be
5010. And we're going over ten feet from point number
eighteen so the easting will be 10050. Next point is point number thirteen and it's
literally just north eleven feet, so point number thirteen's coordinates will be 5021
and the easting is the same at 50050. It looks like we missed number nine. I think that's just cause it's in its own
little line but that's okay. We can look at point number seven's coordinates
and it seems like it's not going up or down at all so the northing is going to be the
same as point number seven, 5045 and we're moving to the right ten feet because it's
an offset so we'll just add ten to the easting of seven -- 10039.67. And there you have it. That is the calculations to figure out the
coordinates of all the points for our L-shaped building. Now, depending on the type of brand that you
use for your total station, and your data collection, it's gonna depend on how you can
export this data. You could just manually input all this data
into a text document. And differentiate the point numbers, northing,
easting, by using a comma, or if you tab over and use a space. You could also do this on Excel. It might be a little bit easier because you
have full control of putting in the numbers yourself. Once you have gotten your project named, you
want to either save this as a text file or as a .csv file. Those are the two most common file extensions
that most data collectors will understand. After you have saved it, upload it to your
data collector. Usually you can do this through USB or through
the computer. And once all that's been done, we're gonna
go ahead and pack-up all our stuff and head out to the field. Hello, and welcome to the field. We're gonna go ahead and establish our control
points so that we can begin our stake out. Now for point 101, we're gonna be using our
infamous blue point. I have gone ahead and labeled it 101 just
so that we know where we are located. For the purposes of this lab, we're only gonna
be using a tape to establish the second point. Usually in the industry you may set the point
first, take an observation and establish a distance and using that very accurate distance,
establish the coordinates of the second point. But for educational purposes, I'm just gonna
go ahead and pull 55 feet and establish point 102. I'm then getting as close as I can to the
point. I'm gonna go ahead and drive the chaining
pin into the ground so that it's aligned with our point. Now I'm gonna go ahead and pull this tape
55 feet. [Tape makes slinky noises as it's pulled]
And as we near into here, we can see we're at 55 feet. Stretch this out and pull tight on the tape. I'm gonna pound in this hub. [Pounding noises]
Fifty-five feet. [Tape makes slinky noises]
So I'm gonna put a stake right here. [Pounding noises]
[♫Music♫] That's number 102. Now what we're gonna start out by doing is
occupying this first point, 101. If you haven't seen my video on how to set
up a total station, I'm gonna recommend that you click on the video in the top right hand
corner. It highlights the details of what goes on
in a survey total station setup. Watch that video first before you continue
with this one. Then once you have seen that video, come back
to this video to see the rest of the stake out procedure. I'm gonna go ahead and set up a prism rod
here on our point 102. So that we can backsight to it from our total
station and then we can just go ahead and position this to point towards the total station. Now, I'm gonna go ahead and sight the prism
so that we can get our backsight reading. Good. Over to the right. Up a little bit. [♫Music♫]
[Device beeps] [♫Music♫]
Okay. I did not expect that. Wow. Okay. So this number usually has some error in it. Uh, I hit 55 right on. So I expect about 5/100ths of a foot of error
when you use the tape, maybe between 5/100ths of a foot and a tenth of error. Or, if you're like me, you'll get it right
on. Remember you're measuring the horizontal distance
and not the slope distance. So, okay. So 55 feet between point 101 and point 102. Now just like the traversing video, we're
gonna be establishing our point of occupancy and what point that we're backsighting. All right so we'll go ahead and start by going
into survey and then we're gonna go into stake points. Now, we are occupying point 101. The instrument height is irrelevant since
we're not doing any kind of elevation, so you can just put zero. The point that we're backsighting is 102. And once again instrument height -- irrelevant. So you can just put zero. Backsight. And we'll check and go ahead and set our angle
and it's gonna set our horizontal angle and we can check and continue. Now we're gonna go ahead and start staking
out points. I'm gonna go ahead and start with point number
one. Now, it's good industry practice that if you
have a fixed rod with a prism on it at all times on a point, and you're going to be staking
points, that you put this rod down. That way your robotic total station isn't
going to accidentally sight to this prism and throw off your staking. If you're using the traditional total station,
and you don't have robotics, this isn't really an issue so you don't have to worry about
it. Okay we're gonna go ahead and lock our instrument
to our total station. If you don't have robotic total station, you're
gonna have somebody behind your instrument sighting your rod at every shot. I like to raise this above my head so that
I don't block it. But we'll go ahead and search. Okay. We're locked in on our total station. I have prepared a number of stakes that we're
going to use to stake out our point building. Remember, this is how our building looks like
with all of its offsets. So these stakes will be representing the location
of that building and the offsets. All right, to figure out if we're close to
the point where it needs to be staked, we're gonna go ahead and take a reading and see
what our total station tells us the distance is from our current location. I'm gonna take a reading. Make sure we're nice and plumb. Okay so in relation to our total station,
point number one is located six feet away from the total station, which is what out
stands for. And 2.28 feet to the right of the total station. So you would have to also move right 2.28
feet. So what I'm gonna do is I'm gonna pace back
about six feet. My pace is a little over two feet per pace. So I'm gonna do three paces -- one, two, three
-- and then I'm gonna pace to the right two feet. That's about one pace, which is two feet. I'm gonna take another reading. All right, and here is what we've got. Now we need to go out of the instrument 0.5
feet and go to the right 0.3 feet. Very minimal movement. I'm gonna go out .5 and go to the right of
the instrument .3. Let's go ahead and try that. All right and after doing all that, now it
says go in 1/100th of a foot and I'm right on between right and left, so I'm gonna go
ahead and stick this rod into the ground. Place a stake in this location. [♫Music♫]
[Pounding noises] All right. That'll do. All right so I'm gonna go ahead and ask to
stake out point number two. All right and then it says I need to move
in about 23 feet, so let's go ahead and do that. All right in about five more feet and to the
left of the instrument, one and a half feet. Okay you go out. Okay. Let's try that. Right of the instrument .4 feet. Out .16 to the left .04. All right there we go. Lift it out of place, put it in here, pull
out our hammer. [Pounds]
Go ahead and switch to point number three. All right, it says I need to move in about
eleven feet. Okay, out two feet and right one foot. Go out two feet and right of the instrument
one foot. Try right here. Okay out .7 and left .6 so out .7, right .6. Out half. Right .3. All right. Right here. [♫Music♫]
Got our hammer. [Pounds]
All right. Let's do point number four. [♫Music♫]
[Device makes a clicking noise] [♫Music♫]
[Sound effects] [♫Music♫]
All right. And there you have it. I have now staked out all of the points that
we calculated. It's not very difficult. All you have to understand is the location
of the instrument in relation to where you are as it dictates where you need to go to
set all of these points. If you want to check and make sure that your
accuracy is good between the points, take a tape measure and measure between the points. If you're getting about 5/100ths of a foot
in difference, then you should be okay. Anything more, you may want to check and make
sure that your setup is done correctly and that you're holding the rod properly. I hope you guys enjoyed today's video. If you did be sure to like the video. It really helps out the channel a lot. Consider subscribing to the YouTube channel
if you enjoy surveying content and like to see more content in the future. If you have any questions here is my personal
email address. Go ahead and email me any time and I will
respond to you and with that, I will see you guys next time. [♫Music♫]
