民家の再生による環境負荷・コストの削減効果とその簡易予測

概要

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Influence of old house renovation on environmental loads and costs were discussed based on 14 renovation cases. Conclusions are as follows : 1) ratio of loads from demolition work is large in CO_2(biomass related), waste emitted and waste landfilled, while ratio of loads from construction work is large in many other environmental loads; 2) area ratios of refurnished, improved and reconstructed, and reuse rates of roof tile and fundation, were proposed as indicators to express the features of renovations, and using these indicators, simplified estimation formulas on effectiveness of renovations on environmental load and cost reductions were developed; 3) according to these formulas, under demolition work, waste emitted and waste landfilled were influenced by the area ratio of refurnished and the reuse rate of roof tile, while, under construction work, timber was influenced by the area ratios of refurnished and improved, coal, limestone and aggregate by the reuse rates of roof tile and fundation, most of other environmental loads by the reuse rate of roof tile; 4) according to the formula, total cost was influenced by the area ratios of refurnished and improved and the reuse rate of fundation under construction work, in addition, the wood reuse rate of beyond 20% could be used as an indicator of cost reduction.
社団法人日本建築学会の論文
2001-11-30