raise lower survey

[ryan.beisaw]

I need to lower my survey to a specific elevation. I can lower the surface by this increment, but i dont see the point elevation change. Id like to make sure everything changes (points, surface, figure lines, etc.) Can someone explain how to make sure I get everything lowered to a specified elevation? Thanks....

Ryan B

[sjg · Accepted solution]

I believe you just need to translate the survey database. There will be no movement or rotation of the database just a vertical change.

[Joe-Bouza]

Qselect >>all, Move 0,0,0 >>0,0,<delta> or edit the points by datum

[ryan.beisaw]

thanks, I ended up translating the survey database in elevation only and it worked just the way i needed it to. appreciate the help!

[tcorey]

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@Joe-Bouza wrote:

Qselect >>all, Move 0,0,0 >>0,0,<delta> or edit the points by datum

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Yikes, dangerous. Qselect all? Do you want to move every line, text, point, corridor and alignment up or down? Probably not.

Steve hit the nail on the head. Kudos, Steve.

[Joe-Bouza]

No. The assumption is we are dealing with all the civil3d objects

[wfberry]

So, what happens Joe, when you move all the points and the surface?  (consider that the points made the surface).

Bill

[Joe-Bouza]

The data, Bill. The data.

I beg all your pardons if I miss spoke - or have said something that cant be determined by reading between the lines. we all know by now my prose at times intentionally diverts the readers attention from the point. my hopes are to open eyes. If I'm wrong I'm wrong. I don't see anything in the OP about a surface - Just data. So if you lower all the data what will happen, Bill?

[Jeff_M]

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@Joe-Bouza wrote:
 I don't see anything in the OP about a surface - Just data. So if you lower all the data what will happen, Bill?

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The OP stated "I can lower the surface by this increment, but i dont see the point elevation change. Id like to make sure everything changes (points, surface, figure lines, etc.)". So if you lower the points AND the surface, the surface will be lower than the points defining it.

[Joe-Bouza]

I need to lower my survey to a specific elevation. I can lower the surface by this increment, but i dont see the point elevation change. Id like to make sure everything changes (points, surface, figure lines, etc.) Can someone explain how to make sure I get everything lowered to a specified elevation? Thanks....

That appears to be a qualifying statement to the prepositional phrase preceding it. My interpertation was the data needed to be adjusted.

And that's why I clarified with "Data".

Seems Like I shall be hoisted on my own petard. Simply for using the word "All". It appears that this has provoked the ire of my soldiers in arms. Don't really know why? Lowering the data seems like a viable solution to me. But hey, I'd never say I know it all - just trying to help out.

[ryan.beisaw]

Basically I had a small survey that had been performed using an assumed coordinate system/datum (10000,10000,100.00)

I wanted to tie it vertically to a benchmark that had been located (NO horizontal shift/rotation)

the surface and the existing site conditions had already been prepared using linework coding in the field. When I selected the surface to lower to the benchmark, that was the only civil objec that adjusted(i assumed the points would as well seems how the surface was created from the points, right?)

Thats why I asked the question, to adjust all the survey data to the lower benchmark elevation. I didtn want to leave any survey data behind at the assumed 100.00 elevation it started at.

The translation worked perfectly, I had just not performed that operation yet in civil 3d 🙂

Thank you all for you input, much appreciated and these forums continue to provide the ultimate feedback 🙂

Ryan B

[tcorey]

Joe, please don't feel you're being attacked by your fellows. We value your extensive knowledge and willingness to participate here.

To all, the reason I posted regarding the use of Select All: From my perspective, knowing how many inexperienced users are out there, I would avoid suggesting Select All without knowing the complete situation. Firstly, what layers are on/thawed. Many users do not consider the consequences of input before they use it. An experienced user would think ahead before he performed this operation, but I can hear the phone call coming in to tech support, "It said on the discussion thread to Select All and Move. I don't understand why my text is at -100 elevation now."

The suggestion to move the data is valid, although not the best answer for this particular poster. It appears that he was talking about data he had brought in using Civil 3D Survey. In that case, Translate Survey Database is the best option. It will not affect drawing objects other than Survey Points and Figures, and it keeps a record of the operation. Unless you keep an AutoCAD log file, there is no way of tracing a Move operation.

Best regards,

Tim

[Joe-Bouza]

Thanks, Tim. I'm not going anywhere.