|Aspect||B-13 Replacement with screening LCA|
||The replacement module covers the complete replacement of components and building parts if their reference service life is lower than the reference study period. Replacement is optional in the context of a screening LCA.|
related study objective
|☒ stand-alone LCA||☒ comparative assertion|
related study phase
|goal and scope definition||inventory analysis (LCI)||impact assessment (LCIA)||interpretation||reporting|
|new buildings||existing buildings||construction products||screening LCA||simplified LCA||complete LCA|
|Provisions||Replacement is optional in the context of a screening LCA.The replacement procedure refers only to planned action in response to anticipated losses of performance of building components and building parts. Replacements should be considered when the reference service life (or eventual design life) of a product or building part is lower than the reference study period.The replacement scenario may cover some of the elements in the following list (item marked with a * are suggested):
Replacement of load-bearing structure, exterior and basement walls, floor slabs and foundation should not be considered unless justified, as they usually entail significant building modification.
In any case, the boundaries of the maintenance scenario should be clearly stated.
A replacement scenario at the building scale may be determined on the basis of:
Building modifications in response to unexpected events (e.g. flood, inappropriate use or vandalism) should be considered as reparation (B3), and are thus optional in the context of a screening LCA.
According to EN 15978, the boundary for replacement should include:
However, in the context of a screening LCA, only the production of the replaced component need be included.
The frequency of replacement may be determined according to the ‘replacement frequency’ aspect of the present guide.
18.104.22.168 Boundary for replacement (Module B4)
8.3 Time related characteristics
8.6.3 Scenarios for maintenance, repair, replacement
||If possible, the overall replacement scenario should be consistent with respect to the building structure (e.g. replacement of coating is mandatory when replacing the support). In addition, LCA of an existing building should take into account actual and established practices (real-life data) specific to that particular building.|