Air Emissions – Life Cycle Inventory Results Table by Life Cycle Stage

 

This table separates and displays the Material ID, for Energy Consumption, Air Emissions, Water Emissions, Land Emissions and Resources by life cycle stage. The table provides row (by Material ID) totals over the building’s expected life.

The Athena Sustainable Materials Institute (ASMI) is set to publish the first North American Environmental Building Declaration (EBD) according to European Committee for Standardization's standard dealing with sustainability of building construction, EN 15804/15978, and in the interest of standardization across building product categories, we have incorporated EN 15804/15978 into the Impact Estimator's results starting with v4.2.0208 (April, 2013). This means redefining our life cycle stage tables and graphs. It is mostly a change in nomenclature and a re-arrangement of our previous life cycle stage columns, the total results do not change. One change is that some results from the Product/Material stage (previously Manufacturing/Material) have been shifted to the Construction Process/Construction Installation Process stage. Previously, all calculated materials, including the construction waste allowances were reported in the Manufacturing stage, but now the calculated material totals will be reported in the Product/Material stage and the construction waste allowances will be reported in the Construction Process/Construction Installation Process stage.

EN 15804/15978 requires the reporting of a specific set of environmental indicators according to a modular format of the life cycle of building products or constructed works including four stages, Product, Construction Process, Use, End of Life (Beyond Building Life is optional) and each stage is comprised of "information modules", the modules compare roughly to our previous Material and Transportation columns and are defined below (the corresponding EN15804/15978 module appears in brackets).

Life Cycle Stage Definitions:

Product:
  • Material (Raw Material Supply (A1), and Manufacturing (A3))
  • Transport (A2).

    • Construction Process:
  • Construction Installation Process (A5)
  • Transport (A4)

    • Use:
  • Replacement Manufacturing, which includes manufacture of replacement materials and on site construction energy (B2, B4)
  • Transport , which includes manufacturing transportation, construction transportation of replacement materials and disposal transportation of replaced materials (B2, B4)

    • Operational Energy:
  • Total Operational Energy Use (B6)

    • End of Life:
  • Material, which includes demolition (C1)
  • Transport, transport of materials to landfill (C2)
  • Disposal (C4)

    • Beyond Building Life:
  • Benefits and loads beyond the system boundary (D)
  • As of v4.5 (November 2013), The Beyond Building Life calculations were added and comprise of recycling credits for steel products and carbon sequestration for wood products. Both tend to be negative values, and were included in the End of Life Demolition column. As of v5.0 (July 2014), the calculations remain the same, but they are presented in a separate (module D) column.

    • Total Effects
  • A to C, a summation of all modules (columns) from A to C, (Product to End of Life).
  • A to D, a summation of all modules (columns) from A to D, (Product to Beyond Building Life).

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