Quantifying the Greenhouse Gas Emissions in the Construction of Wooden School Structures Using the Cross-laminated Timber Construction Method

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  • CLT工法を用いた木造学校建築物の建設におけるGHG排出量の定量化
  • CLT コウホウ オ モチイタ モクゾウ ガッコウ ケンチクブツ ノ ケンセツ ニ オケル GHG ハイシュツリョウ ノ テイリョウカ

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Abstract

<p>The volume of greenhouse gases (GHGs) emitted during the process from product manufacturing step to the construction process in the life cycle of a wooden school building (two stories; total floor area: 407.2 m2) constructed using cross-laminated timber (CLT) was quantified. GHG emissions were also quantified for school buildings with a reinforced concrete structure (hereafter, “RC structure”) and for those with a steel structure (hereafter, “S structure”), keeping all other specifications constant. The GHG emissions were then compared between scenarios. The results were as follows. The volume of GHG emissions from the CLT products used to construct the wooden school building using the CLT method, over the life cycle of the building, was 442 kg CO2e/m3. The volume of GHG emissions for the wooden school building itself was 168 t CO2e. And, the volume of GHG emissions for the school buildings with the RC and S structures was 242 t CO2e and 206 t CO2e, respectively. These results showed that using the CLT construction method to build structures for a school can reduce GHG emissions by approximately 30.6% and 18.5%, respectively, compared to using an RC structure or an S structure.</p>

Journal

  • Mokuzai Gakkaishi

    Mokuzai Gakkaishi 66 (2), 101-111, 2020-04-25

    The Japan Wood Research Society

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