Welcome

This is a space for helping you use and understand Building Transparency's suite of tools, including:

	EC3	Embodied Carbon in Construction Calculator	Upfront Carbon Assessment* Free to use | Open access
	tallyCAT	tally Climate Action Tool	Upfront Carbon Assessment* Revit plugin | Open Access
	tallyLCA	tally Life Cycle Assessment (the original tally)	Whole Life Impact Assessment* Revit plugin | Trial + License

Due to the ever-changing nature of the tools, this User Guide is continually a work in progress.

*Differences in Scope Explained

Upfront vs. Whole Life

Upfront assessments only account for life cycle stages that can be measured upfront. Whole Life assessments also account for future use-stage and end-of-life aspects anticipated based on current trends.

Carbon vs. Multiple Impacts

Carbon assessments consist of tracking only the following impact category:

• Global warming potential (GWP) measured in kgCO2e

Complete Life Cycle Assessment usually also considers other impact categories, such as, but not limited to, the following:

• Acidification potential (AP)

• Eutrophication potential (EP)

• Ozone depletion potential (ODP)

• Smog potential (SP)

Life Cycle Assessments also usually report non-impact categories, such as depletion of resources and generation of waste.