Selecting Toposurface for Editing

[tdaltd]

I am having difficulty selecting a toposurface for editing.

I created a toposurface from an imported CAD file provided by my surveyor in my SITE PLAN - Existing Phase.

I went through the exercise of creating a grade region for my new construction and it works great.

I created a number of subregions to show the new landscaped areas and paved parking areas.

I am trying to now split parts of the region in order to add some retaining walls where I want the new topography to be discontinuous across the two sides of the retaining wall.

However, after selecting "Split Surface" on the Massing and Site tool bar, I can only select the sub regions and not the entire toposurface that is required to add the split lines.  If I go to another view such as a site section, I can select the toposurface, then switch to a plan view and edit the data points, but the work flow for the split surface command does not work selecting the toposurface first.  Is there a way to force REVIT to select the toposurface and not the sub regions.

T

[barthbradley · Accepted solution]

Not following.  A Subregion of Toposurface cannot exist without the Toposurface. and you cannot use Split Surface tool on just a the Subregion.  You can Split the Toposuface that is hosting the Subregion though.  If the split line crosses over the Subregion, the Subregion will be split as well.  

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@tdaltd wrote:

However, after selecting "Split Surface" on the Massing and Site tool bar, I can only select the sub regions and not the entire toposurface that is required to add the split lines. 

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Something is crazy-wacko here. What you are describing should not be happening.  It makes no sense.  You are not by chance trying to intermix Revit Site Tools with Revit Site Designer tools? 

[barthbradley · Accepted solution]

is this what you mean by "discontinuous across the two sides of the retaining wall"? 

[tdaltd · Accepted solution]

Yes I agree. Something is definitely wacko. In my project I have a graded region surrounded by the existing neighboring topography. In my graded region I have modified the topography to suit my project, and I have a signed various parts of it as subregions. Now however I am not able to select the topography surface in order to conduct a split region. I can select the subregion and I am allowed to edit its shape. But now, if I want to edit the topography within the sub region, I cannot select the top surface and the edit top of service menu. If I go to a section view, I can select the topography, and then switch to a plan view and then edit my data points. I simply cannot select the topography in a plan view although I can select the subregion. Unfortunately, the split surface tool requires that the topography is selected from a plan view. The wacko part is that on the piece of site that I am not interested in, that is the piece that is not part of my graded region, the split surface tool works perfectly fine. I select the split surface tool, Then when asked I select the topography of my neighboring site, and at last I am asked for the split surface lines. Wako for sure.

[barthbradley · Accepted solution]

Well, you got me scratching my head, @tdaltd.  Can you share the file?  

[MostafaElashmawy · Accepted solution]

I guess that you are trying to select the subregion not the toposurface.

The split line will be able to work with a toposurface and not the subregion.

[tdaltd · Accepted solution]

Yes correct.
It seems that you cannot use the split region tool on subregions. After
selecting the split region tool, you must select a toposurface to split.
It will not let you select a subregion.

I just performed a quick test. I made a small temporary, easily fixed
later, opening in the boundary of my subregion, allowing a portion of the
toposurface to show though. After selecting the split region tool, I could
select the toposurface through this opening and voila, problem solved.

Onwards we go! Amazing what sleeping on a problem can do.

Thanks everyone.

[tdaltd · Accepted solution]

Fixed!

It seems that you cannot use the split region tool on subregions. After
selecting the split region tool, you must select a toposurface to split.
It will not let you even select a subregion.

I just performed a quick test. I made a small temporary, easily fixed
later, opening in the boundary of my subregion, allowing a portion of the
toposurface to show though. After selecting the split region tool, I could
select the toposurface through this opening and voila, problem solved.

Onwards we go! Amazing what sleeping on a problem can do.

Thanks everyone.

[tdaltd · Accepted solution]

Yes. Would splitting the surface be the best way to make this happen? I
found a solution to my problem.

It seems that you cannot use the split region tool on subregions. After
selecting the split region tool, you must select a toposurface to split.
It will not let you select a subregion.

I just performed a quick test. I made a small temporary, easily fixed
later, opening in the boundary of my subregion, allowing a portion of the
toposurface to show though. After selecting the split region tool, I could
select the toposurface through this opening and voila, problem solved.

Onwards we go! Amazing what sleeping on a problem can do.

Thanks everyone.

[tdaltd · Accepted solution]

It seems that you cannot use the split region tool on subregions. After
selecting the split region tool, you must select a toposurface to split.
It will not let you select a subregion.

I just performed a quick test. I made a small temporary, easily fixed
later, opening in the boundary of my subregion, allowing a portion of the
toposurface to show though. After selecting the split region tool, I could
select the toposurface through this opening and voila, problem solved.

Onwards we go! Amazing what sleeping on a problem can do.

Thanks everyone.

[barthbradley · Accepted solution]

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@tdaltd wrote:
Yes. Would splitting the surface be the best way to make this happen? 

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I gather the "Yes" is in response to my retaining wall picture/question.  Split Surface doesn't have anything to do with it.  The Toposurface is edited to place points at the correct elevations around the wall.  A Split Surface it just another Toposurface within a Toposurface.   And, I definitely wouldn't Split the Toposurface around the perimeter of a Retaining Wall, if that's what you are asking.     

[tdaltd · Accepted solution]

Thanks
So your topography runs continuously through the retaining wall, with a
steep gradient between the required grade levels on each side of the wall.
If you remove the wall, there would be steep slope remaining. The trick is
always adding enough points on each side of the wall to make all the
contour lines behave for you in plan view.

I can see that there will be a time for spitting the surface, and other
times to simply manipulate topography.

Bye for now

T

[RDAOU]

DA