Skillnader mellan stommaterialets växthusgasutsläpp

Sammanfattning: Enhanced global warming is a phenomenon international organizations collaborates tocounteract by setting international standards, stricter environmental requirements, requirements on environmental product declarations (EPD) and to make companies provide statements on how their operation affects the environment. Green building is becoming more attractive which creates higher demand for climate friendly buildingmaterials and construction projects. Steel and glulam are two of the most commonly used structural elements used for framework in hall constructions and their impact on global warming is compared in this study using life cycle analysis (LCA). As a basis for LCA a fictitious hall constructionis built with glulam respective steel framework, geographically located in Fredriksskans, Gävleborg. Indata to LCA originates from product specific EPDs, peerreview articles and other relevant research, calculations are done according to international standards. Results show that greenhouse gas emissions from the materials greatly depends on how the materials are used when recycling. Hall constructions built with steel framework produce 139 % more greenhouse gas emissions than a hall built with glulam if both materials are recycled for environmentally friendly purposes.