Environmental Impacts of Multi-Storey Buildings Using Different ...
Environmental Impacts of Multi-Storey Buildings Using Different ... Environmental Impacts of Multi-Storey Buildings Using Different ...
- 82 -6.4.4 ResultsThe number of points awarded (only for the two categories materials and energy), as well asthe weighted total score (based on those two categories) for the Steel, Concrete, Timber andTimberPlus building are shown in Table 6.14.The weighted score is calculated in the Green Star tool based on the weightings shown inTable 6.12. Categories for which “not applicable” was chosen are excluded from theweighting, i.e. it leads to a different result if N/A is ticked or if 0 credits are awarded.Table 6.14: Green Star results – base scenario.Timber TimberPlus Steel ConcreteRecyclables Storage 0 0 0 0Re-use of Façade N/A N/A N/A N/ARe-use of Structure N/A N/A N/A N/AShell and Core or Intergrated Fit out 0 0 0 0Recycled Content of Concrete N/A N/A N/A 3Recycled Content of Steel N/A N/A 2 N/APVC Minimisation 0 0 0 0Sustainable Timber 2 2 N/A N/ACarpet N/A N/A N/A N/APaints 0 0 0 0Thermal insulation 0 0 0 0Non-carpet floor coverings N/A N/A N/A N/ACredits for material 2 2 2 3Credits for energy 3 3 3 3Total credits 5 5 5 6Weighted score 5 5 5 6The environmental ranking of the buildings based on the Green Star results would be- Concrete- Steel/Timber/TimberPlus (all joint equal)In comparison the LCA results for primary energy use as well as GWP in the base scenarioare shown in Table 6.15Table 6.15Table 6.15.Table 6.15: LCA results – base scenarioRanking Primary energy GWP1 TimberPlus TimberPlus2 Concrete Timber3 Timber Concrete4 Steel Steel
- 83 -Table 6.16: Green Star results – recycling scenario.Timber TimberPlus Steel ConcreteRecyclables Storage 0 0 0 0Re-use of Façade N/A N/A N/A N/ARe-use of Structure N/A N/A N/A N/AShell and Core or Integrated Fit out 0 0 0 0Recycled Content of Concrete 3 3 3 3Recycled Content of Steel N/A N/A 2 N/APVC Minimisation 0 0 0 0Sustainable Timber 2 2 2 2Carpet N/A N/A N/A N/APaints 0 0 0 0Thermal insulation 0 0 0 0Non-carpet floor coverings N/A N/A N/A N/ACredits for material 5 5 7 5Credits for energy 3 3 3 3Total credits 8 8 10 8Weighted score 7 7 8 7For the reutilisation scenario, the environmental ranking of the buildings based on the resultsof the Green Star rating would be:• Steel• Concrete/Timber/TimberPlus (all joint equal)For comparison, Table 6.17 shows the LCA results for primary energy use as well as GWP inthe reutilisation scenario.RankingTable 6.17: LCA results – reutilisation scenario.LCA reutilisationscenario -Primary energyLCA reutilisationscenario -GWP1 TimberPlus TimberPlus2 Concrete Timber3 Timber Steel4 Steel Concrete
- Page 31 and 32: - 31 -Figure 4.5: South-west façad
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- Page 61 and 62: - 61 -Table 6.2: Net tonnes CO 2 eq
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- Page 75 and 76: - 75 -8,0007,0006,0005,000GWP (t CO
- Page 77 and 78: - 77 -45000400003500030000GWP (kg C
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- Page 101 and 102: - 101 -example, removal of CCA trea
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- Page 105 and 106: - 105 -9 Discussion9.1 The Building
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- Page 123 and 124: - 123 -10 ConclusionsThe following
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- 83 -Table 6.16: Green Star results – recycling scenario.Timber TimberPlus Steel ConcreteRecyclables Storage 0 0 0 0Re-use <strong>of</strong> Façade N/A N/A N/A N/ARe-use <strong>of</strong> Structure N/A N/A N/A N/AShell and Core or Integrated Fit out 0 0 0 0Recycled Content <strong>of</strong> Concrete 3 3 3 3Recycled Content <strong>of</strong> Steel N/A N/A 2 N/APVC Minimisation 0 0 0 0Sustainable Timber 2 2 2 2Carpet N/A N/A N/A N/APaints 0 0 0 0Thermal insulation 0 0 0 0Non-carpet floor coverings N/A N/A N/A N/ACredits for material 5 5 7 5Credits for energy 3 3 3 3Total credits 8 8 10 8Weighted score 7 7 8 7For the reutilisation scenario, the environmental ranking <strong>of</strong> the buildings based on the results<strong>of</strong> the Green Star rating would be:• Steel• Concrete/Timber/TimberPlus (all joint equal)For comparison, Table 6.17 shows the LCA results for primary energy use as well as GWP inthe reutilisation scenario.RankingTable 6.17: LCA results – reutilisation scenario.LCA reutilisationscenario -Primary energyLCA reutilisationscenario -GWP1 TimberPlus TimberPlus2 Concrete Timber3 Timber Steel4 Steel Concrete