Wall Foundation

Hi All,

I am currently trying to put continuous footing under all my walls in project. I found this topic (Wall foundations according to lines) which contains the python code. However, It gives me an error stating below

Here is a snip of my script

Thanks in advance for the help!


You’re getting a looping error. Python is trying to get the Id of your list object instead of the individual wall objects I’m guessing.

Edit: Yup. I looked at the code in the linked post and it’s set up for a single wall element. You’ll have to put in a loop to get each wall individually.

Hi Nick,

Thanks for getting into this. Yes, I tried to feed single wall elements instead of multiple and worked perfect.

I do not know how to put a loop in current code. Can you please help me or advise me how to do it?


Hi @Mitesh_Gajjar,

Try this:


import clr

#Import the Revit API
import Autodesk
from Autodesk.Revit.DB import *

#Import DocumentManager and TransactionManager
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

#Reference the active Document and application
doc = DocumentManager.Instance.CurrentDBDocument

wft = UnwrapElement(IN[0])
walls = UnwrapElement(IN[1])

result = []


for i in walls:
	result.append(WallFoundation.Create(doc, wft.Id, i.Id))


OUT = result

Thanks @MartinSpence!!!

You’re awsome!!

This works exactly how I want it.


1 Like

Thanks. I tried to use this script and since I had only 1 wall foundation type I did use the x[0], and I get an error, shown below.
If I connect the X[0], works perfectly.

How could I modify the Python script to allow this?

Hi @simoneavellini,

You are feeding the python node a list with a single WallFoundationType. Use the original script, and it will work.
Feeding in a list of WallFoundationTypes is possible, but would make the python unnessecarily complicated.

I understand, as zero-skilled in coding was hoping was not a big deal. Thank you anyway.