# Actual Volume of material for modeled masses

**URL:** <https://community.carbonleadershipforum.org/t/actual-volume-of-material-for-modeled-masses/8780>\
**Category:** Materials\
**Tags:** revit\
**Created:** [April 2, 2025, 3:58pm UTC](https://community.carbonleadershipforum.org/t/actual-volume-of-material-for-modeled-masses/8780 "2025-04-02T15:58:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![LO\_Diane](https://avatars.discourse-cdn.com/v4/letter/l/3bc359/32.png) [@LO\_Diane](https://community.carbonleadershipforum.org/u/LO_Diane)\
**Post date:** [April 2, 2025, 3:58pm UTC](https://community.carbonleadershipforum.org/t/actual-volume-of-material-for-modeled-masses/8780/1 "2025-04-02T15:58:08Z")

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I am trying to do LCA on revit projects and our walls, floor and roofs are modeled as masses, the correct thickness, but it’s a solid mass. So when i’m running a material takeoff of the model it has a lot more material than would actually be there. Has anyone figured out how to create a formula or a process to account for the actual volume of the studs. Using the spacing or whatever. I’ve tried everything I can find.

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**Author:** ![bbenkeCLF](https://avatars.discourse-cdn.com/v4/letter/b/8e8cbc/32.png) [@bbenkeCLF](https://community.carbonleadershipforum.org/u/bbenkeCLF)\
**Post date:** [April 3, 2025, 9:09pm UTC](https://community.carbonleadershipforum.org/t/actual-volume-of-material-for-modeled-masses/8780/2 "2025-04-03T21:09:06Z")

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Tally will do some of this for you. I’m assuming your using a different tool. But yes, I know that other modelers (e.g., Oneclick users) will create their own calculations to estimate material takeoffs when things are modeled as masses. I don’t have any easy resources to recommend but maybe some of our Oneclick users can chime in.

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**Author:** ![JacobSavona](https://avatars.discourse-cdn.com/v4/letter/j/f19dbf/32.png) [@JacobSavona](https://community.carbonleadershipforum.org/u/JacobSavona)\
**Post date:** [April 7, 2025, 7:20pm UTC](https://community.carbonleadershipforum.org/t/actual-volume-of-material-for-modeled-masses/8780/3 "2025-04-07T19:20:09Z")

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We use OneClick and they have average steel stud OneClick EPDs for a variety of thicknesses and spacings. If you select the EPD with the known stud thickness + spacing, you can enter the wall area, then switch to volume or weight and OneClick will give you a default conversion.  
For example: 3 5/8" @ 16" OC steel studs - 100 sf = 88 lbs = 30 cu ft  
Good enough for an industry average model, but best to get the actual quantities for the as-built model.

Search query: “steel stud” → structural steel and steel profiles → steel stud framing…