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

Embodied Carbon in Construction Calculator

Upfront Carbon Assessment* Free to use | Open access

tally Climate Action Tool

Upfront Carbon Assessment* Revit plugin | Open Access

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.

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