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Point descriptions in topo survey data

Point descriptions in topo survey data

Point descriptions in topo survey data

(OP)
Hi, are there any guidelines about providing point descriptions in the topo survey data? For example, if you have 10,000+ points, do you need to provide descriptions for all of these points? Any advice will be appreciated !

RE: Point descriptions in topo survey data

I'll see if I can dig it up... there's a main standard format for the storage of point data in a file.

Dik

RE: Point descriptions in topo survey data

(OP)
Thanks dik !

RE: Point descriptions in topo survey data

To my knowledge, there is no universally accepted standard. Most companies and agencies have their own standards. One can easily find standards for various state DOTs for example. It is extremely helpful to use description codes for ALL of the points and to follow the standard being used for a project.

RE: Point descriptions in topo survey data

The file extension is *.las, and it does have a (universally?) accepted format that is well documented. A few years back we were having difficulty finding a conversion file for a point cloud to AutoCAD and I used Delphi to 'cobble' together a reader and input... was clunky, but, worked with a little fiddling.

Dik

RE: Point descriptions in topo survey data

The disclaimer section's first sentence is fascinating, "This technical documentation has been prepared by Her Majesty the Queen..." Obviously, Her minions did the actual work.

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RE: Point descriptions in topo survey data

We usually use the local State DOT's standard point description when doing site & roadway work, elsewise we default to our local State DOT's. When all else fails, I write down my own point codes in the field book, ie GND = Ground, FH = Fire Hydrant, …

RE: Point descriptions in topo survey data

Can you use the code for "average top of dirt at this spot" 9,900 times? 8<)

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