Greenroads Manual
PR-3: Lifecycle Inventory
Goal
Incorporate energy and emissions information into the decision-making process for pavement design alternatives.
Requirements
Complete a lifecycle inventory for the final pavement design alternative for the project using the software tool, PaLATE v2.2 as modified for Greenroads, or approved equal. Report only results for total energy use and global warming potential (GWP) (in carbon dioxide equivalent emissions, CO2e) for the final pavement design alternative. The following input values are required for PaLATE v2.2:
- Total weight and types of virgin materials. This includes aggregates, binders, base materials, and structures. These amounts can be design estimates or constructed totals.
- Total weight and types of recycled materials. PaLATE v2.2 models emissions and energy for several types of materials.
- Expected transportation distances for all materials. This means distances from source to production as well as from production to site. Transportation of waste to disposal is also included.
- Expected construction vehicle types. These include, but are not limited to, pavers, mixers, hauling vehicles, excavators, rollers, and finishing equipment.
- Estimated design life. Use the same input data as used in the PR-2 Lifecycle Cost Analysis.
- Scheduled years and expected type of maintenance. Use the same input data as used in the PR-2 Lifecycle Cost Analysis. This information should also match the project specifications provided to meet the requirements for PR-9 Pavement Maintenance Plan and PR-10 Site Maintenance Plan.
Documentation
A copy of the input/output page for PaLATE v2.2 for Greenroads. If other software is used, provide a list of data sources in addition to the input list and output values for total energy use and GWP.
Resources
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