木造住宅の建設時のCO₂排出量削減を目指した対策と評価

在来工法による木造戸建住宅の環境負荷予測に関する研究 その3

抄録

This paper focuses on how to reduce CO₂ emissions regarding construction materials. We compared section by section the amount of CO₂ emissions from the four different houses. Next, we made an improved plan that took away the first floor that was constructed with reinforced concrete, as well as the interior decorations which emitted less CO₂ during their factory production. The following results were obtained.
1) We determined which sections of the four houses had less construction waste. We determined which sections of the four houses emitted less CO₂ during their production.
2) The total amount of CO₂ emissions per floor from construction materials is 318.8kg-CO₂/m²～498.1kg-CO₂/m².
3) The proposed countermeasure that took away the first floor reduced CO₂ emissions by 15.7×10³kg-CO₂, a decrease of 30.4%.The proposed countermeasure that used the interior decorations, which emitted less CO₂ during their factory production, reduced CO₂ emissions by 5.1×10³kg-CO₂, a decrease of 9.9%.The countermeasure that the authors described in their improved plan reduced CO₂ emissions by 20.8×10³kg-CO₂, a decrease of 40.3%.