Hi folks,
BSR/ASHRAE/ICC Standard 240P, Quantification of Life Cycle Greenhouse Gas Emissions in Buildings, is out for Public Review until March 18. It covers what construction activities have to be tracked and reported and provides placeholder values to use during design. If you have input or suggestions on what would be needed to make this workable, useful, and meaningful--now would be a good time to let ASHRAE know.
Here's the language on "Construction Activities" (there are also sections in the draft on "Pre-construction demolition" and on "Construction Waste" which I didn't include here):
6.5.3.2 Construction Activities (A5-2)
This stage shall include any activity requiring the use of equipment, tools, or facilities consuming fuel, energy, or water on the construction site. This includes, but is not limited to: site preparation, groundwork and excavation, ground improvement, connection to utilities, installation of temporary elements necessary for construction, removal of such elements, installation of all materials considered in A1-A4, storage of materials on-site or in the staging area, any field assembly or production occurring on site prior to installation, any transportation or lifting of materials occurring on-site, and use of facilities and trailers by workers on site.
6.5.3.2.1 As-Designed Compliance Path.
GHG emissions shall be estimated based on 40 kg CO2e/m2 of the project gross floor area.
6.5.3.2.2 As-Built Compliance Path.
Electricity, natural gas, or other fuels, and water consumption shall be determined from utility bills or meter readings. Fuel consumption shall be determined from delivery tickets, invoicing, or estimated from GPS trackers or telematic data. Additional water brought to the site shall be determined from delivery tickets, invoices, or submittals. GHG emissions associated with energy usage shall be calculated in accordance with Section 7.3.3. GHG emissions associated with water usage shall be calculated in accordance with Section 7.4.2.