A-12 Transport of construction workers – complete LCA

Aspect A-12 Transport of construction workers – complete LCA
This aspect concerns the transportation of construction workers from home to work and to the construction site. Under specific goal and scope, this aspect might be interesting for, say, a construction company that needs to identify the hotspots of its construction site.

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 The transport of construction workers may be included in complete LCA if it is relevant for the goal and scope of the study (e.g. a construction company might have more interest than a building designer in this aspect).In the context of a complete LCA, the transportation of workers to site may be taken into account based on detailed calculations if relevant for the goal and scope of the study, unless this aspect falls under cut-off rules.
Rules from:
EN 159788.5 Scenarios for the construction process stage (Modules A4-A5)
The practitioner should use detailed calculation based on specific data for complete LCA. For more information about the relative share of impacts of the transport of workers, the practitioner can refer to the existing literature.This aspect may be neglected for most building LCA studies, because it may fall outside the goal and scope. However, specific building stakeholders, such as construction companies, may have a special interest and thus will take it into account.

If taken into account, this aspect is likely to fall under cut-off-rules for most construction projects. Unless the energy used for transport of staff to site is likely to exceed 1% of the primary energy requirement for the site operation, it is not necessary to collect data from staff on their journey to and from the construction site. If necessary, the significance could be reviewed by considering costs as a proxy for primary energy, although it should be recognized that petrol and diesel are often highly taxed relative to electricity. Such a statement should be supported through detailed studies of the construction stage. It will be revised if more evidence is available.

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