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CIVIL 3D - CONVERT POINT CLOUD INTO SURFACE


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Posted

I have a point cloud (RCP) file that I attached in Civil 3D. This point cloud (RCP file) contains numbers of LAS files (individual scans of road pavement). My manager wants me to use civil 3d to measure the cracks/damages/distress of the road by working on this point cloud file in Civil 3D. I dont know what to do. What should I do? What should be my workflow (step by step procedure) to be done in Civil 3D. What commands should I use? I badly need your advise/mentoring on this one guys. Thanks in Advance.

Posted

Ok taking that you know about how make a surface and alignments as 1st step.

 

You should be able to make contours 2nd step, this will give some idea of surface patterns at low intervals.

Make multiple long sections along the road so can see ups and downs. Make Cross sections.

If you answered don't know how to any of above you have a problem and we can not teach you from here.

 

Back to point clouds, they can be very useful but have 2 problems, lack that human can see a problem, re Cracks, the other is the size of the TIN can be massive, If you do 1m grids v;'s say 300mm grids the smaller spacing will show way more up and downs.

 

Just a comment we compared a LAS aerial survey of a road to a true survey instrument survey, we found around +-20mm on points compared, it showed that for concept design it would be useful, in very flat areas it would be a problem. Oh yeah las was flown by plane. I take it you used a drone a better result.

 

 

 

 

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