# Missing calculation

**URL:** <https://community.realtimelca.com/t/missing-calculation/142>\
**Category:** Help\
**Created:** [September 20, 2024, 7:07am UTC](https://community.realtimelca.com/t/missing-calculation/142 "2024-09-20T07:07:33Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MOLO](https://avatars.discourse-cdn.com/v4/letter/m/7bcc69/32.png) [@MOLO](https://community.realtimelca.com/u/MOLO)\
**Post date:** [September 20, 2024, 7:07am UTC](https://community.realtimelca.com/t/missing-calculation/142/1 "2024-09-20T07:07:34Z")

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Hello  
I am having trouble getting a project to calculate the actual CO2 consumption. The materials are 100% mapped, but it shows an emission of 0 kg CO2/m²/year. I have done the exact same project once before, and it showed an emission of 11 kg CO2/m²/year. Can you help?

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**Author:** ![martinromby](https://dub1.discourse-cdn.com/flex005/user_avatar/community.realtimelca.com/martinromby/32/22_2.png) [@martinromby](https://community.realtimelca.com/u/martinromby)\
**Post date:** [September 20, 2024, 7:41am UTC](https://community.realtimelca.com/t/missing-calculation/142/2 "2024-09-20T07:41:46Z")

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Hi @MOLO,

Welcome to the community! 👋  
You are welcome to introduce yourself [https://community.realtimelca.com/t/introduce-yourself/](https://community.realtimelca.com/t/introduce-yourself/)

Sorry to hear that the results are not being calculated as expected.  
Just a long shot and from top of my mind; are you using any constructions with inhomogeneous layers in it?

Martin

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**Author:** ![MOLO](https://avatars.discourse-cdn.com/v4/letter/m/7bcc69/32.png) [@MOLO](https://community.realtimelca.com/u/MOLO)\
**Post date:** [September 20, 2024, 9:29am UTC](https://community.realtimelca.com/t/missing-calculation/142/3 "2024-09-20T09:29:36Z")

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thank you for your reply. Yes we have inhomogeneous layers in our project.

Morten