I'm using Carlson Civil software.
Say I have a loaf of bread that represents a gravel stockpile.
I want to slice off bread until I have a specific volume of bread left.
I want to slice it at a 1:1 slope
So far I'm thinking I should drape a 3D polyline over the loaf, then use the "Design Pad Template" routine to cut down to the bottom of the loaf. I can save the cut face as a surface.
Is there a routine to merge the cut face into the remaining loaf and discard the slice of bread?
I know it's there in the Surface Model Utilities, just can't figure it out...I'm hungry and going home for the day.
Presuming your "1:1" surface plane TIN has been created, check the Surface -- Triangulation File Utilities command. Once you launch the command, you would likely select the "loaf of bread" surface model and click Next. From there, explore the Merge TIN option. From the on-line help:
>Merge TIN: Merges the current subject TIN into a second user-specified TIN file. There are three methods:
>
>Current TIN inside/Second TIN outside boundary: This method is only available when Bounding Polylines are selected in the first Triangulation File Utilities dialog. The current TIN will be used inside the boundary polylines and the second TIN is used everywhere else. The current TIN file should be the smaller of the two surfaces since the subject file will be joined or merged into the second file. For example, to merge a pad design into existing ground with this method, choose the pad design as the current TIN, pick the pad perimeter as the bounding polyline and use existing ground as the second TIN.
>
>Second TIN inside/Current TIN outside boundary: This method uses the second TIN inside the boundary and the current TIN everywhere else. The outline of the second TIN is used as the boundary if no bounding polylines where selected in the initial dialog. For example, to merge a pad design into existing ground with this method, choose the existing ground as the current TIN and choose the pad design as the second TIN.
>
>Wipe, combine and repair Current TIN where overlaps Second TIN: This method removes triangles from the current TIN for areas that overlap the second TIN. Then the second TIN is added into the current TIN surface and the gap between the current and second TINs is triangulated to stitch them together. This method is useful when the two TINs don't have matching have elevations on their common boundary. Then this method will create a transition zone between the TINs.
I suspect you would use the "Second TIN inside/Current TIN outside boundary" option. Once merged, you can run the "Save as TIN" command to write an updated version of the new, combined model.
I tried nearly every combination possible, including different inclusion polylines, and alternating which file gets selected first. No dice. The whole inside/outside thing is confusing me because they overlap. It makes perfect sense if I was trying to merge a pond surface into the middle of a larger surface.
About to tear my hair out. 8 hours yesterday and nothing done. First it was a discrepency in volume calculations, then difficulty assigning slopes to a pad polyline, then inability to merge these two surfaces.
Going to have to switch projects....to another one that requires modeling. Hopefully it goes better.
Thanks for trying.
Feel free to send me a copy of the entities that comprise your "breadloaf" and 1:1 slope models and the two TIN files themselves and I'll take a look. lnelsonATcarlsonswDOTcom.
I spent some time with Brian on the phone looking at the assign slopes routine (design pad template) and also discussed this modeling task.
It turned out we could get the routine to cut out the slope out of the top, then simply work with the quantities by isolating the good part with an inclusion boundary.
I could probably trim off the rest of the surface by running it through the triangulation utilities again and use an inclusion boundary, but it was not necessary.
Thank you for the offer.
