grid line points attachment to a surface

[shershahbacha9]

Hey experienced people !!

i want to compare the differences between two earth surfaces and i came across something regarding gridlines but i am unclear about it.

its like creating gridline mesh on level 0 , then project the points of grid on two surfaces which are above gridline mesh.

Can someone help me regarding it and explain the method a little after creating a gridline mesh

[barthbradley]

 "Compare the differences between two earth surfaces"??? Do you mean between two Revit Topsurfaces?  

[shershahbacha9]

yes exactly

[barthbradley]

Do you mean this?

[shershahbacha9]

i think no. i mean gridlines and their intersections

[barthbradley]

What exactly are you wanting to compare between the 2 Toposurfaces?   

[shershahbacha9]

The difference in their heights at different points

[RDAOU]

@shershahbacha9 

Not sure where you read about the method you mentioned above and what they recommended therein...but Revit doesn't do what you are asking for. As a matter of fact, AutoCAD and Civil 3D does that better.

Best that Revit does is overlaying 2 x 3D topo-surfaces and calculate the cut and fill. To project a 3D topo surface on a plane you need to use Dynamo...something you can do in AutoCAD or civil 3D with 1 command

Isn't this the same as you previous discussion which you started one month ago? I think it is lol

[barthbradley]

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@shershahbacha9 wrote:

The difference in their heights at different points

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Why? 

[shershahbacha9]

Thanks but i have to do it in Revit and yes i am trying now in dynamo. Yes i did before a month but i couldnt understand what really to do and i was doing others tasks of my student project. Now my deadline is near and i have to do it anyway and thats why again posted but this time about this specific process

[RDAOU]

Both are Toposurfaces in Revit format? or do you still have that google earth/sketchup thing

[shershahbacha9]

both are toposurfaces in revit format and in same file

[RDAOU · Accepted solution]

Ok...I am not sure what you are supposed to present but I think the below might do it

1. then lay a grid
2. Place Sections along each grid line (X and Y)
3. Place an entourage family consisting of a model line as a place holder at the grid intersections
4. Open sections and place coordinates at the hosting point between the entourage family and each toposurface
5. Place them on a sheet 

Upload your file I will try to do a quick screencast showing you how the above will look like

[RDAOU · Accepted solution]

@shershahbacha9 

This is what was meant by the above...not sure still if this is what your assignment is about

[RDAOU · Accepted solution]

@shershahbacha9 

Here is the screencast (family + 1 site ...you can make the first invisible and repeat the same for the second site ) 

[shershahbacha9]

Thank you so much