Existing Topography

[Ashlyn Robello]

Iam creating a haul road for a quarry. I have my corridor surface and topography surfaces; however, the corridor surface does not rebuild to the topography surface. Can someone help me troubleshoot why the corridor is not adjusting the topography of the surface ? Attached pictures of surface/corridor and creation screens for corridor surface/boundaries.

It don't believe it is pasting. I can paste a surface into another, but doesn't it work differently with a corridor (which I am using for the haul road)? With the corridor there should be cut and fill (based on your corridor design) because the corridor is placing itself into the existing surface topography. With the corridor, I should be able to move the road around and it will automatically adjust the road to the surface topography. I guess I'm having a hard time explaining. The attached picture shows what the corridor should look like, I just don't know how to make it cut into the existing surface. Maybe it is pasting and I'm not doing it right.

If you are trying to just create a surface based on your corridor for comparison to the existing topo, then you need to create the surface for that corridor and assign it a style that you use for proposed ground. That would allow you to do a cut/fill analysis. Does that help?

one more question... I got the corridor to tie into the surface, but is there a way to make it do what I created without a corridor (see both images). Essentially with the daylight subassembly I used, it creates a cut/fill slope defined in the settings. Is there a way to make the road fit and keep the benches? I looked at all the generic link assemblies and daylight assemblies but couldn't figure out which one might do that.

That will give you a NEW CONSTRUCTION phase topo surface, and all other edits to your surface will be to this surface, not the one in the existing phase. you might want to make two site views - one for Existing and the other for New Construction to keep this straight.

Many thanks for all 3 of you and your good answer.

I managed to recreate it on my test file - so hopefully it will work the same on the proper project.

If I understand your answers correctly, they all involve copying (sort of) the topography and have an existing and a proposed topography on top of each other.

I am slightly confused why this is done with a graded surface for the proposed topography and not just a simple copy paste of the topography itself.

I must admit my learning curve has not reached the graded surface yet.

(Somehow, the solution doesn't seem intuitive - but I guess we all learned that this is not unusual for Autodesk software)

Thanks again All

a graded surface is the easiest way to create an exact copy of a toposurface to begin the editing process. typically, it would be done as early in the process as possible. Once the existing topo is created and you want to start making changes, you can use the graded surface option and revit will create a new topo exactly the same or by removing all interior points. It will also try to put it onto a new phase (new construction) but you will have to make sure the existing toposurface has a current phase of 'existing' and the view phase is set to 'new construction'. when there are things like building pads involved, it can become tricky since building pads create separate surfaces... but this is the general idea of how that tool works.

if used correctly, you'll now have an existing phase topo surface, and a new phase topo. all new changes to the topo are done in the new construction phase. this will enable you to have a cut/fill schedule and changes between the topo will appear phased properly when viewed in shaded or consistent colour mode based on the phase filter settings.

as the other two here have said, copy and pasting can work as well and get you to the same place, but i find it can be more confusing than starting from the beginning and using a consistent method with the 'graded region'.

Graded Region IS a Copy. The only difference between using Graded Region and Copy is that a Graded Region maintains an association with its source. You could easily use Clipboard Copy/Paste Aligned to the Same Place to make a "dumb" copy of the Existing Toposurface. But if you want to calculate (and document) how much earth needs to be moved, removed and/or brought to the site - e.g. money, time and resources - then the Graded Region workflow is how this math is performed and reported in Revit. Condition 1 where the Toposurface is in its native, unexcavated state and Condition 2 (the Graded Region) where the Toposurface has been excavated for a Building Pad. Condition 1 - Condition 2 = Cut/Fill. If you don't need that level of BIM in your Project, then Clipboard Copy/Paste Aligned to the Same Place and control their Visibilities in the View however you prefer. You don't have to use Phasing.

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Current diagnostic criteria for multiple sclerosis (MS) do not consider the optic nerve as a typical topography for establishing the diagnosis. Recent studies have proved the utility of optic nerve magnetic resonance imaging, optical coherence tomography and visual evoked potentials in detecting optic nerve lesions during the early stages of MS. In addition, emerging evidence supports the inclusion of optic nerve topography as a fifth region to fulfil the dissemination in space criteria. Anticipating a modification in the McDonald criteria, it is crucial for neurologists to familiarize with the diagnostic properties of each test in detecting optic nerve lesions and understand how to incorporate them into the MS diagnostic process. Therefore, the objective of this article is to review the existing evidence supporting the use of these tests in the diagnostic process of MS and provide a practical algorithm that can serve as a valuable guide for clinical practice.

Identifying, retaining and preserving the existing topography from the restoration period. Documenting topographic variation prior to project work, including shape, slope, elevation, aspect and contour. For example, preparing a topographic survey.

Protecting and maintaining topography from the restoration period by use of non-destructive methods and daily, seasonal and cyclical tasks. For example, applying adequate sediment and erosion controls to protect fragile earthworks from the restoration period.

Using physical evidence of form and detailing to reproduce in-kind an entire topographic feature from the restoration period. If using the same kind of material is not technically, economically, or environmentally feasible, then a compatible substitute material may be considered. For example, re-establishing earthworks around a fort.

Removing a deteriorated topographic feature from the restoration period and not replacing it; or replacing it with a new feature that does not convey the same visual appearance. For example, changing stepped terracing to a curved slope.

Failing to remove topographic features from another period, thus confusing the depiction of the landscape during the restoration period. For example, maintaining modern earthen mounds on a historic bowling green.

Recreating a missing topographic feature that existed during the restoration period based on historical, pictorial and physical documentation. For example, recreating a trench and fortification from the restoration period based on stratigraphic research.

Creating a topographic feature which is incompatible with the restoration period. For example, constructing a topographic feature that was thought to have existed during the restoration period, but for which there is insufficient information; or, constructing a topographic feature that was part of the original design but was never executed, thus creating a false historic appearance.

Hello all, I have a topography map that came from a former student that was done in autocad. I transferred it to rhino and now but there is an issue with the topo lines themselfs, The lines are broken and split, some dont fully connect because their elevation mark is inbetween the lines. I was wondering if there was an easy way to rebuild and connect the curves. Then after that if the data is lined up perfectly is there a smooth way to surface all of them together making a nice topography map?

this helps a little... first join as many curves as possible, find start and endpoints, sort them by height, run a proximity... you will still have some unwanted curves, but for a first pitch this will get you somewere

I would second the delaunary mesh suggestion. In my personal experience it is the best way to create a topography from topography lines, which tend to be quite messy and disrupt the surface generating components.

My suggestion is to use the cleaning scripts, bake the new geometry and in real time modify the lines while watching the delaunary mesh output until you get to a good enough result for the scale of your project.

Rhinoterrain is a good plug-in to create meshes from contours or point clouds. It will create a Delauney mesh and the plug-in has commands to repair or make changes to the mesh. You can also make cross sections of the terrain. However you have to pay for it or use the evaluation version.

Alternatively you can use the plug-in Lands Design. I haven't got much experience with this plug-in myself but I think you can create surfaces and terrains from contours. And you can download it for free.

While the volume at the top of the slope is lifted into the air, the second volume sits completely on the ground and part of the third volume is buried in the ground. The other surface of this volume continues as a walkable surface.

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