Open Access
Appendix B
Major missing specification assumptions for the LCA modelling.
| Component | Assumption | Justification |
|---|---|---|
| Material quantity for the roof structure | An eToolLCD template for the roof structure was used. It calculates the material quantity based on the roof area and pitch. | The template is based on common construction practices. |
| Ceiling insulation | For houses with ceiling insulation but no specification, an R-value of 2.5 was assumed. | This is a common R-value used in the ceiling. |
| Construction materials in the heritage part of House C | Limestone walls and suspended timber floors. | These were common building materials used in the early 1900s in the City of Fremantle. |
| Staircases | An eToolLCD template for timber staircases was used. | The template is based on common construction practices. |
| Suspended floor structure | An eToolLCD template for elevated wooden stilts was used when specific details about the underfloor structure were not available. | The template is based on common construction practices. |
| Ducted air conditioner duct length | An eToolLCD template for duct air conditioner was used. The length of the duct was estimated based on the house habitable area. | The template is based on common construction practices. |
| Tiled areas | The tiled area of bathrooms, kitchens and laundries was estimated. | 0.5 mm thick tiles have a relatively small embodied energy compared to a brick wall. This estimation does not have a significant impact in the overall embodied energy of the house. |
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