Providing offset points along an alignment for survey stakeout

[snyd3r]

I'm creating a layout for survey stakeout along a roadway.  The centerline of the road needs to be staked out on the left and right of the centerline with 50ft offsets to provide area for the contractors to work.  What is the easiest way to provide stationing and elevations at the indicated 50 ft offsets?  Also is there an effective way to export this data to excel once the points have been located and identified?

Thank you,

-Ben

[Pointdump]

Hi Ben,
Best to export the alignment to XML. That way if there's a backhoe parked on an even station your data collector can easily stake out +48.00 or whatever. I know with corridors you can create points at station/offset, but with just an alignment I think you'll need to create a report. I might be wrong on this. Been a while.
Dave

[Jeff_M]

The DisplayAlignProf tool in the Sincpac makes this a simple task.

[snyd3r]

Unfortunately I do not have that software to run that command.

[wfberry]

This is relatively simple but at first may not seem so.

1.  Home --> Points --> Create Points

Here you can set your layers, etc for points in the opening screen.  Also on this page under points Creation Set automatic for all the options that ask.

2. Go to the 3rd dropdown.  Select measure Alignment.  Assuming you are going for normal intervals of 25' or 50'.

A request is made on the Command line to select your alignment, once selected there is a request for your profile grade line.

Then the starting station is requested, select something standard like 2+00 because so when the interval is requested, say you want 25' intervals it will begin at your 2+00 then, 2+25, etc.

You may have to do it twice since the first time, positive offset for right and negative offsets for left.

Bill

I usually save the file before I do the above, so when I screw up, I just close and re-open and perform a "re-do".

[AllenJessup]

Bill,

That's how I do it. What I've found out is that the crews doing the stakeout don't like the numbers increasing on one side then skipping back to the start for the other side. They like numbers in sequence. So once the points are created. I export a NEZD.csv file and use Excel to sort them.

Our roads are fairly linier. So I sort by Northing or Easting. If the road were a loop or eyebrow. You might have to create a column that strips the + sign from the station so you could sort that way. Then you can create a column for new numbers.

Then I erase the stakeout points in the drawing and import the modified CSV file.

[wfberry · Accepted solution]

Allen:

I normally don't have that problem.  "Which side do you want the stake, left or right".

Easy peasy !

Bill

[snyd3r]

Thanks guys for all the help.  I ended up dropping in cogo points based on the alignment geometry.  I'm laying out the stakeout for a stream channel so its not as simple as a standard 25 to 50' intervals, so I ended up having to do a good bit of hand entry creating offset points at defined intervals at my PC, PT, MP, and breaks.  I know some folks are doing this with ArcCollector, so we may have to look into that in the near future.

Thank you,

-Ben

[wfberry]

Ben:

One of your first responses was from Jeff Mishler who also owns Sincpac.  Jeff has some wonderful tools in his program.  They would be worth looking into.

Bill