> For the complete documentation index, see [llms.txt](https://docs.betterbuilding.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.betterbuilding.io/user-guide/workflows/carbon/carbon-faqs/database-customised.md). # Database (Customised) Embodied carbon assumptions (Global warming potential (GWP), or kg CO2 eq) for raw materials, transport, and manufacturing are sourced through published Environmental Indicator databases (e.g. [BRANZ](https://www.branz.co.nz/), [EPiC](http://epicdatabase.com.au/) or [Building Transparency](https://www.buildingtransparency.org/)). Speckel is agnostic regarding databases, recognising the different methods in each and the inability to compare them against each other. Where specific values and sources are required, such as an EPD or a specific product from a database, customised values are added on a material basis. To customise a material, select 'Customise Database' and select the material group you want to update. Once selected, options for Name, Source, Embodied Emission Factor and Units are requested. This process is repeated for all materials that are required to be customised. More materials are available from the following databases, where specific values are preferred. When adopted, these values override the default value set and provide a more accurate system representation. If you have a preferred database, we recommend you access it below or from the original publisher. * **BRANZ** - [Access the database here.](https://speckelio-my.sharepoint.com/:x:/g/personal/darren_speckel_io/Ef4HW5D7lhNAumU4C2yegK8BAeK9OGSCxX4o9MB8jDDezA?e=twiehd) * **EPiC** - [Access the database here.](https://speckelio-my.sharepoint.com/:x:/g/personal/darren_speckel_io/ERbqVI4HmqFGhG8z74zCKDoBs4Kd7rixSlKZUEhZdjxrCQ?e=Vmooix) * **Building Transparency** - [Access the database here.](https://buildingtransparency.org/ec) * **ICE** - [Access the database here.](https://speckelio-my.sharepoint.com/:x:/g/personal/darren_speckel_io/Ee__hD96QzVDnyrVicTaRSgBwDAe6EdEao3RN_65-oQ1-A?e=4nKr57) * **AusLCI** - [Access the database here.](https://speckelio-my.sharepoint.com/:x:/g/personal/darren_speckel_io/Ed12ko_yU_FOi9f2IhE2UCgBf-iyw4LNAIDgruQwK-rGyw?e=nrL5us) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.betterbuilding.io/user-guide/workflows/carbon/carbon-faqs/database-customised.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.