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Grading Calculation - volume of excavation from a mesh

Scott Bulmer
Booster
Greetings, I need to calculate the excavated volume of soil from a mesh as it relates to a swimming pool. The pool is on a sloping mesh as seen in the attached image. For a grading calculation, is there a way to accurately calculate the volume of where the mesh intersects the pool? For the purpose of this discussion the pool can be one large slab. Thanks for any suggestions. Scott
AC25 v. 5005 w/ MEP, Cadimage, Twinmotion 2021 using AC from AC6.0, 2.7 GHz 12-Core Intel Xeon E5 (OS X 12.2.1 Monterey), AMD FirePro D700 6GB, SSD, Artlantis 2019, Adobe CC. Used AC on both platforms.
12 REPLIES 12

Dave Seabury
Enthusiast
Scott

Create a schedule for the mesh and calculate "Net Volume", you will have to run the schedule with and with out the seo of the pool. The difference in the volume calc's is the excavated volume.

David
AC 19-24 Windows 10 64 bit, Dell Prercision 7820, Xeon Silver 2414R ( 12 Cores), 64 GB Ram, Quadro RTX 4000 8GB

Barry Kelly
Moderator
Dave wrote:
Create a schedule for the mesh and calculate "Net Volume", you will have to run the schedule with and with out the seo of the pool. The difference in the volume calc's is the excavated volume.

Just create a duplicate of the mesh without the SEO so you can calculate both at the same time and you don't affect the existing mesh SEO.

It is a bit of a pain the a 'Net Volume' works for a mesh, but there is no such thing as 'Gross Volume' for a mesh (or 'Conditional Volume' either).

Barry.

One of the forum moderators.
Versions 6.5 to 25
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10

Scott Bulmer
Booster
It worked~! Thank you both for your suggestions, As recommended I used duplicate meshes with and without the SEO calculated in a mesh schedule. That is a very handy grading calc technique. Scott
AC25 v. 5005 w/ MEP, Cadimage, Twinmotion 2021 using AC from AC6.0, 2.7 GHz 12-Core Intel Xeon E5 (OS X 12.2.1 Monterey), AMD FirePro D700 6GB, SSD, Artlantis 2019, Adobe CC. Used AC on both platforms.

Stress Co_
Expert
Understood that issue is solved...
But there is yet another option
(if you are on an ARCHIPLUS subscription).
Download the "Terrian Tool".

Full discloser... I've never tried it.
Marc Corney, Architect
Red Canoe Architecture, P. A.

Mac OS 10.15.7 (Catalina)
Processor: 3.6 GHz 8-Core Intel Core i9
Memory: 48 GB 2667 MHz DDR4
Graphics: Radeon Pro 580X 8GB
ArchiCAD 25 (5010 USA Full)

Scott Bulmer
Booster
Thanks Marc. Also, I just learned that the opening tool in AC23 when placed into meshes can yield the volume of the hole or excavation volume. Very useful. See the attached screenshot. Scott
AC25 v. 5005 w/ MEP, Cadimage, Twinmotion 2021 using AC from AC6.0, 2.7 GHz 12-Core Intel Xeon E5 (OS X 12.2.1 Monterey), AMD FirePro D700 6GB, SSD, Artlantis 2019, Adobe CC. Used AC on both platforms.

rjwilden
Contributor
Im not certain this is measuring the volume of the excavation, When I do this, it measures the volume of the opening tool, maybe there is another selection option in the schedule.
Richard Wilden Design. Ltd
Dunedin, New Zealand.
Imac 27" i9 3.6GHz; 32GB Ram Mac OS 11.3
Archicad V23:V24

Anonymous
Not applicable
i am using Zones in 3d to draw the excavation area and then i use SEO (subtract by upwards extrusion) with the original terrain.
This is working for us so far because we can schedule the excavations easily also the zone comes with a stamp so a lot of info is displayed there.

One question though.
Can i measure the volume of a zone after a SEO?

(please say yes)

Anonymous
Not applicable
Thank you both for your suggestions !

bouhmidage
Expert
here is my workflow, to automate the process
you have to duplicate the original terrain , change it's material and ID like shown
AMD Ryzen 9 3900X, 32 GB RAM, RTX 3080 10 GB

Archicad 23

Windows 10 professional

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Anonymous
Not applicable
@bouhmidage
I use this workflow too. But I think it is too much duplications and SEO's for a simple task.
This is why I propose a SEO: Link/Unlink Operators and Operation. I think this workflow should be achievable at once in the SEO Dialog Box. The thing is that as it is, SEO operations are used just for pure modeling purpose. It has much more potential, as it could be used in the Project/Construction workflow, where its Operations could resemble actual construction operations.

Tim Ball
Expert
I have done this a few times and use a slab

Create the slab to the correct depth and plan area you want
Angle the slab edges to batter the excavation. There are not many soil conditions where you can have vertical sides to a large excavation safely
Intersect the top of the slab to the mesh using SEO
Cut the mesh with the slab using SEO
Convert the resulting slab shape to a morph to fix the shape
Read the mesh morph
Classify and label the morph so you can share the data correctly
Tim Ball

AC25, iMac

User since V5

Anonymous
Not applicable
Tim wrote:
Intersect the top of the slab to the mesh using SEO
Cut the mesh with the slab using SEO
Convert the resulting slab shape to a morph to fix the shape
Read the mesh morph
Classify and label the morph so you can share the data correctly
That is my point. So much work for a simple task. And with this process I will have to create one Mesh for the Existent Terrain, another for the Proposed Terrain. And in case I change the Proposed Terrain I will have to redo the process of defining the excavation volume. If we could turn On and Off these SEO operations according to the documentation need, I could have just one Terrain Mesh in which I add or subtract geometries according to its visibility. Then a AddedVolume and SubtractedVolume (Similar to NetVolume and GrossVolume) on a schedule would give me the live data grading calculation.
Does this makes sense?

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