| Abstract [eng] |
Global and international requirements due to poor environmental conditions and significant climate change are forcing the construction industry to use sustainable materials. Sustainable materials can also include organic materials, such as wood or mass wood products. The Ministry of Environment of the Republic of Lithuania has issued an order stating that from 2024. November 1 public buildings will have to be built using at least 50% of timber or other organic materials. It is important to provide a clear and logical methodology for the assessment, how and by what means the percentage of organic materials in a building can be estimated. One of the convenient ways is to use building information modeling tools and 3D modeling. Sustainable and unsustainable 3D models were designed for the study using the Autodesk Revit program package. The ontologies of the National Building Information Classifier were used to identify the building elements. Environmental product declarations submitted by manufacturers were used to assess the sustainability of buildings and project parameters were created for assessment. Based on the quantity worksheets of the designed structures, the total values of 7 main indicators of the environmental impact of materials were calculated and the sustainability of the structures was determined. The essential parameter “Organic material” was created, which allowed the authors to sort the structure into organic and inorganic. The formulas created by the authors required the volumes of organic and inorganic materials, which were used to assess the percentage of organic materials in the structures. The percentages of organic materials are calculated based on the authors' methodology and the methodologies proposed by the Ministry of the Environment of the Republic of Lithuania. It was determined that based on the authors' methodology, more accurate results were obtained, while based on the methodology of the Ministry of the Environment of the Republic of Lithuania, coarser results were obtained. |
