# Volume Calculations in the Cloud Best option for base surface

**URL:** <https://community.pix4d.com/t/volume-calculations-in-the-cloud-best-option-for-base-surface/8176>\
**Category:** PIX4Dcloud Questions/Troubleshooting\
**Created:** [April 9, 2019, 7:35pm UTC](https://community.pix4d.com/t/volume-calculations-in-the-cloud-best-option-for-base-surface/8176 "2019-04-09T19:35:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Anth\_Suffell](https://avatars.discourse-cdn.com/v4/letter/a/7cd45c/32.png) [@Anth\_Suffell](https://community.pix4d.com/u/Anth_Suffell)\
**Post date:** [April 9, 2019, 7:35pm UTC](https://community.pix4d.com/t/volume-calculations-in-the-cloud-best-option-for-base-surface/8176/1 "2019-04-09T19:35:24Z")

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Im looking to understand fill volumes.

I have uploaded an example project of a quarry and I’d like to understand the fill volume.&nbsp;

However there is a significant difference in elevation from one side to the other, obviously I would like to simulate filling the quarry so that the finished level corresponds with the slope in land elevation , opposed to filling so that it corresponds with the highest level.&nbsp;

Which base surface would reflect this option best?

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**Author:** ![Blaz](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/blaz/32/4344_2.png) [@Blaz](https://community.pix4d.com/u/Blaz)\
**Post date:** [April 23, 2019, 7:29am UTC](https://community.pix4d.com/t/volume-calculations-in-the-cloud-best-option-for-base-surface/8176/2 "2019-04-23T07:29:18Z")

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Hi Anth, in cases where the volume needs to follow the surroundings, I would recommend using the “Triangulated” option.&nbsp;

More information in the&nbsp;[How to calculate volumes on the cloud](https://support.pix4d.com/hc/en-us/articles/360016638271-How-to-calculate-volumes-on-the-cloud)&nbsp;article.

Best,