5. Conclusions
The study outcomes for LCA and life cycle costing approach
depend onassumptionsandsystemsboundaryconsidered.Italso
depends on choice of building typology,scope and construction
techniquesusedinbuildings.Theoutcomesoflifecycleenviron-
mental impactsandcostaredominatedbydifferentlifestagesof
buildings. ThecategoriesofGHGandCEDaredominatedbythe
construction andoperationstages;waterusagebytheconstruc-
tion andmaintenancestages;andsolidwasteisdominatedat
disposal phase;LCCisdominatedinconstructionphase.TheLCA
model wassensitivetoassumptionsinsomeenvironmental