Can we write a script in dynamo that would fill in all graded areas at a certain x% slope?
Recently I worked on a project where we had to do a lot of grading. AHJ required us to put erosion control blanket on all graded areas steeper than 1:4 slope. I am wondering if dynamo can be used to hatch all of these graded areas at once? Is that even possible? or is dynamo more of a data extraction tool?
Dynamo could do this
Can you please guide me in a direction where I can find how?
Looks like Camber and Arkance has surface analysis nodes that can be utilized. I’ll try to take a look too when I find time.
sounds good. Thank you so much! I will also look into it further.
and the C3D Toolkit lets you work with hatches !
as in, it lets you identify areas of certain slopes first?
I meant to create the hatches. But sure it can help calculating the slopes. What object type do you have in C3D ? Do you have a simplified sample dwg?
yes I do have a simplified DWG with only the surfaces. i can attach it here?
When I was looking into this I thought of trying to use the Surface.SlopeAnalysis node in camber. I wasn’t sure how to use the node but Zachri provided some guidance here: Camber Feedback Thread - #231 by mzjensen
Perhaps the data can be extracted from the slope analysis as hatches. I just haven’t had a chance to test.
The Arkance Systems Node Library contains nodes to extract triangles from a Tin Surface. The triangles have a Slope or Grade property, so if they are larger than x, you can hatch the triangle (also available in this Node Library).
that sounds like it would work! i will test it out and let you all know. Thank you so much.
Here you go:
Result in:
Here is the Dyn file:
tin large grades.dyn (20.0 KB)
What you can do is colorize the hatches or add text inside with the grade or what you want to do 
