Calculating Volume between a laser scan point cloud and perimeter shotcrete walls

Revit
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I work for a GC in CO. I am trying to calculate the volume of concrete we will need to go in between the shotcrete wall I have planned (modeled in Revit) and the shoring as it is in the field (represented by a laser scnned point cloud). I am wondering if anyone knows of a way to find this using dynamo and Revit together.

I have tried starting by making the point cloud into a topo-type surface and subtracting the distance- I couldn’t work this.
In the past we’ve set a section cut every 5 feet, drawn a median line and measured the distance into SQFT and then converted into Cubic Feet (per the 5ft distance).

Using the last method, I could probably gather the data easily using Dynamo by using the integer values, running it through a formula node and exporting a list of the cubic feet values into XCEL.

Any thoughts on this?

Thanks so much in advance.

2

Check out this thread for some possible ideas that may or may not help you: How to Create a Surface in Revit from XYZ Point Cloud Data?

3

Could you make two meshes and find the difference in their volumes?