# Global perspective -- how big are the pie slices for gypsum board, aluminum, glass, etc?

**URL:** <https://community.carbonleadershipforum.org/t/global-perspective-how-big-are-the-pie-slices-for-gypsum-board-aluminum-glass-etc/2635>\
**Category:** Education/Research\
**Created:** [November 24, 2020, 10:15pm UTC](https://community.carbonleadershipforum.org/t/global-perspective-how-big-are-the-pie-slices-for-gypsum-board-aluminum-glass-etc/2635 "2020-11-24T22:15:58Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bruce1](https://sea1.discourse-cdn.com/flex015/user_avatar/community.carbonleadershipforum.org/bruce1/32/473_2.png) [@bruce1](https://community.carbonleadershipforum.org/u/bruce1)\
**Post date:** [November 24, 2020, 10:15pm UTC](https://community.carbonleadershipforum.org/t/global-perspective-how-big-are-the-pie-slices-for-gypsum-board-aluminum-glass-etc/2635/1 "2020-11-24T22:15:58Z")

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We know that concrete and steel comprise about 8 and 7% of total global emissions, respectively. Does anyone have comparable numbers for other categories, e.g., wood, glass, aluminum, flooring, gypsum board, etc?

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**Author:** ![janeconstructionlca](https://sea1.discourse-cdn.com/flex015/user_avatar/community.carbonleadershipforum.org/janeconstructionlca/32/247_2.png) [@janeconstructionlca](https://community.carbonleadershipforum.org/u/janeconstructionlca)\
**Post date:** [December 6, 2020, 11:01am UTC](https://community.carbonleadershipforum.org/t/global-perspective-how-big-are-the-pie-slices-for-gypsum-board-aluminum-glass-etc/2635/2 "2020-12-06T11:01:36Z")

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Arup’s Low Carbon Routemap for the UK for the Green Construction Board ([https://scbrims.files.wordpress.com/2013/10/routemap-final-report-05032013.pdf](https://scbrims.files.wordpress.com/2013/10/routemap-final-report-05032013.pdf)) has a breakdown for the UK in figure 32.

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**Author:** ![anthony.pak](https://sea1.discourse-cdn.com/flex015/user_avatar/community.carbonleadershipforum.org/anthony.pak/32/3234_2.png) [@anthony.pak](https://community.carbonleadershipforum.org/u/anthony.pak)\
**Post date:** [December 17, 2020, 12:16am UTC](https://community.carbonleadershipforum.org/t/global-perspective-how-big-are-the-pie-slices-for-gypsum-board-aluminum-glass-etc/2635/3 "2020-12-17T00:16:51Z")

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Hi Bruce,

Edgar Hertwich (my former professor at NTNU) published an [article](https://osf.io/preprints/socarxiv/n9ecw/) in 2019 that showed a breakdown for carbon footprint of material production in 2015. Here is a screenshot image from the article.

 ![Screen Shot 2020-12-16 at 4.09.48 PM](https://us1.discourse-cdn.com/flex015/uploads/carbonleadershipforum/original/1X/599a7e39ba86f623ed83c21b7d7e8db5b7be254e.png)

His figures are also shown in the [UNEP Emissions Gap Report 2019](https://www.unenvironment.org/resources/emissions-gap-report-2019).

 ![Screen Shot 2020-12-16 at 4.12.49 PM](https://us1.discourse-cdn.com/flex015/uploads/carbonleadershipforum/original/1X/485a18f8b23c36342428624e1283bfe2fa7b69c7.png)

There seem to be some slight differences in the data between the table and the chart. Not quite sure why that is. But hopefully this helps.

Cheers,  
Anthony

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**Author:** ![bruce1](https://sea1.discourse-cdn.com/flex015/user_avatar/community.carbonleadershipforum.org/bruce1/32/473_2.png) [@bruce1](https://community.carbonleadershipforum.org/u/bruce1)\
**Post date:** [December 17, 2020, 7:31pm UTC](https://community.carbonleadershipforum.org/t/global-perspective-how-big-are-the-pie-slices-for-gypsum-board-aluminum-glass-etc/2635/4 "2020-12-17T19:31:15Z")

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Thank you, Anthony. And, yes, we all keep finding sizable discrepancies in different reports, due no doubt to different data sets and product category rules, and just in general the youth of LCA science.

But thanks, this was super helpful!