設計段階と施工段階における資材重量の比較: 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2

摘要

We analyzed the difference in weight between construction materials that we measured and those calculated from blueprints for four different houses. Next, we determined the coefficient used to calculate CO2 emissions based on the calculation using the actual measurements and those measurements taken from the blueprints. The following results were obtained.rn1) The weights of the construction materials used in the bases, the building frames and the roofs that were calculated from blueprints were both heavier and lighter than the actual measured values. The weights of the materials used in the outside walls that were calculated from blueprints tended to be lighter than the actual measured values.rn2) Our calculated coefficients are 98.5%～102.5% for the bases, 97.7%～105.9% for the building frames, 102.7%～116.3% for the roofs and 126.1%～ 137.7% for the outside walls.%近年、CO_2排出量の削減は早急な対策が求められている。建築分rn野における住宅及び業務ビル用の資機材製造・建設・改修・運用時rnのCO_2排出量は我が国におけるCO_2排出量全体の3分の1と推計さrnれている。そのうち住宅建設に由来するCO_2排出量は全体の約5.2%rnを占めるとされている。