Use Topography to cut solid objects

[Anonymous]

I have a project where I am fabricating large boulders. I have a topography surface, and know that footings for the fabricated boulders must be located approximately 2' below grade. How can I use a topo surface to cut the boulders I have designed so that I may find out the volume of concrete I need? This is also a crucial step in my construction drawings. I designed the boulders in AutoCAD and imported them to Revit, where I did the rest of the work, so it would be easiest to modify them there.

[ToanDN · Accepted solution]

Read the tutorial below:

MARCELLO SGAMBELLURI AB3340: Make Hardscape Follow Site Topography and Site Topography Follow Hardsc...

Or, you can split the topo surface following the boulder footprint, create a schedule with a calculated value to get the volume based on the surface area.  You can move the splitted area down 2' if you want.

[Viveka_CD]

Hi @Anonymous

Try to create the topography as a custom in-place family. Then you can use a custom void shape to cut the topography.

Revit lists the volume properties in the Properties palette.

See HERE for information on how to Reporting Cut and Fill Volumes on a Site.

Can you share a screen-shot of the section with your boulders and site?

HERE is screen-cast by @Lance.Coffey on how to cut sides in a topography.

If you find this post has solved your problem, please click on 'Accept as solution' to help others with similar questions. 

[Albert.Maduro]

Thank you for the reply, this helps alot

Anyway, the link you gave does not work, so I tried to google the title and I found the working link for the tutorial video

https://www.autodesk.com/autodesk-university/class/Make-Hardscape-Follow-Site-Topography-and-Site-To...