A-22 Prefabrication of building products – screening and simplified LCA

Written by Anh-Migrate on 22. October 2012. Posted in Existing buildings, New buildings.

*Aspect*		A-22 Prefabrication of building products – screening and simplified LCA
*Description*		This aspect refers to the off-site construction assembly of prefabricated products such as reinforced concrete. Should the off-site construction be considered in the context of a screening or simplified LCA?
*Related study objective*		☒ stand-alone LCA		☒ comparative assertion
*Related study phase*		☒	☐	☐	☐	☐
		goal and scope definition	inventory analysis (LCI)	impact assessment (LCIA)	interpretation	reporting
*Relevant for*
	new buildings	existing buildings	building products	screening LCA	simplified LCA	complete LCA
*Provisions*	Prefabrication should be considered in the context of a screening or simplified LCA. The manufacture of building products should be included in Modules A1–A3, and their transport in Module A4. Only the impacts of their installation (waste, machinery etc.) are included in Module A5, based on cut-off rules.
*Rules from:*	*EN 15978:* 8.5 Scenarios for the construction process stage (Modules A4-A5)
*Guidance*	The practitioner should use default values (e.g. based on generic data or ratios) for screening or simplified LCA. Such data can be defined with stakeholders.