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Posts: 38
Registered: ‎11-29-2011
Message 1 of 16 (372 Views)

372 Views, 15 Replies
01-21-2013 12:28 PM

I have a surface profile 1 and a corresponding water level profile 1 of a flood plain. Now I get an updated surface profile 2 and the engineer ask me to ajust the water level according to the difference of surface level 1 and 2.

How can I add a irregular distance (water depth)  to surface profile 1?

Oh ok. That's just a little friendly calculation slang for getting things done here  Hi there, what country are you from?

Again, you don't need to have every PVI match at first!

Pick a base control profile for your convention... I'm guessing it would be the water surface profile for your case.

So, you have to interpolate elevations for the Water Surface PVI stationing on the other two surface profiles because they may not have those PVI stations. Then you can compute your equation above as you stated for the resultant profile.

This can all be easily done simultaneously in Excel.

If you're more comfortable working in C3D than Excel, there is still a way to use my suggestion.  First you have to make a corridor from your water level profile.  Make it flat and narrow, just wide enough to be useful.

Then you can make a surface from the corridor, and proceed to use the volume surfaces method I described.  Finish off by making a surface profile of the new water level surface.

The one advantage of doing it inside Civil 3D is that it will be dynamic.  If you update surface1 or surface2 or the exisitng water surface, in all cases the new water level surface will update according to the calculations built in.

*Expert Elite*
Posts: 2,520
Registered: ‎05-21-2008
Message 2 of 16 (371 Views)

01-21-2013 12:30 PM in reply to: Redli1

Not sure exactly what you're trying to do.  Does copying the surface help?  Then you can raise or lower the copy by the necessary amount and add that surface profile to the profile view.

Credit where credit is due! Give kudos or accept as solution whenever you can.

Active Contributor
Posts: 38
Registered: ‎11-29-2011
Message 3 of 16 (367 Views)

01-21-2013 12:42 PM in reply to: troma

At each station the delta (suface profile 1 - surface profile 2) is different. I have to adjust the water level profile according to this delta

Valued Mentor
Posts: 1,104
Registered: ‎01-07-2011
Message 4 of 16 (335 Views)

01-21-2013 02:16 PM in reply to: Redli1

Do you know SAC?

Fred Ernst, PE
C3D 2015
Ernst Engineering
www.ernstengineering.com
Active Contributor
Posts: 38
Registered: ‎11-29-2011
Message 5 of 16 (329 Views)

01-21-2013 02:38 PM in reply to: fcernst

so far I don not have a corridor. why should a make one?

Valued Mentor
Posts: 1,104
Registered: ‎01-07-2011
Message 6 of 16 (327 Views)

01-21-2013 02:45 PM in reply to: Redli1

I can quickly kick out your required adjusted profie and floodplain delineation all in one shot.

Fred Ernst, PE
C3D 2015
Ernst Engineering
www.ernstengineering.com
Active Contributor
Posts: 38
Registered: ‎11-29-2011
Message 7 of 16 (318 Views)

01-21-2013 02:58 PM in reply to: fcernst

I hope somebody else can help me?

Valued Mentor
Posts: 1,104
Registered: ‎01-07-2011
Message 8 of 16 (314 Views)

01-21-2013 03:08 PM in reply to: Redli1

Oh ok if you don't have time to explore that,  you can just post the drawing with the profiles and I can do that for you real quick, no charge.

Fred Ernst, PE
C3D 2015
Ernst Engineering
www.ernstengineering.com
*Expert Elite*
Posts: 2,520
Registered: ‎05-21-2008
Message 9 of 16 (294 Views)

01-22-2013 05:18 AM in reply to: Redli1

Is your water level profile from a surface too?

If you do a volume surface between Surface1 & Surface2, this will give you the difference between them at every station.  You could then paste that volume surface into a regular surface, and do another volume surface between that and the water surface.  This will add the difference between the first two onto the water surface.  But you will have to figure out which one is Base and which one is Comparison in each case.

Credit where credit is due! Give kudos or accept as solution whenever you can.

Valued Mentor
Posts: 1,104
Registered: ‎01-07-2011
Message 10 of 16 (287 Views)

01-22-2013 06:34 AM in reply to: Redli1

So many good options out there...

Here's another one:

You can always output the profiles to XML and quickly get the data to crank on in Excel. Then bring it back with XML:

<Profile name="Main RD">
<ProfAlign name="Main-FGCL">
<PVI>0.507625059359 2506.</PVI>
<PVI>582.340948472239 2523.219164741822</PVI>
<PVI>1511.652753557886 2507.38066067943</PVI>
</ProfAlign>
</Profile>

Fred Ernst, PE
C3D 2015
Ernst Engineering
www.ernstengineering.com
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