Analysis of Hybrid Timber Construction by Multiple Criteria Decision-Making Method

When selecting materials for a building, designers should not only think about structural requirements but also to the sustainability of the selected materials. The article presents a study of a single building using methods that comprehensively evaluate alternative design solutions. The approach is based on the complex system of criteria allowing a comprehensive evaluation of alternative solutions at an early design stage, combining life cycle assessment (LCA) and multi-criteria decision analysis (MCDA). This study evaluates the environmental impact of five alternative types of building components (reinforced concrete, hybrid wood elements), while determining the most rational alternative solutions according to the specified criterion (price, CO2 emissions, human time consumption, envelope thicknesses). The results show that, when the columns, ceilings and beams are made of reinforced concrete and the external envelope comprises SIP panels, the version of building structures ranks in the second place in terms of theoretical significance (81 points) and in the first place in terms of subjective significance (79 points)