PhD thesis
Resource and climate footprint assessment of constructions from conventional approach to building information modelling
Publication Details
Authors: | Sameer, H. |
Publisher: | Kassel University Press |
Place: | Kassel |
Publication year: | 2021 |
ISBN: | 978-3-7376-0954-8 |
DOI-Link der Erstveröffentlichung: |
Languages: | English |
The construction industry is one of the leading industries that are mainly responsible for the environmental impact of the economy. Implementing ambitious climate protection and resource efficiency is a prime environmental policy issue and becoming a top priority of many worldwide policies. As extraction and production of natural resources, also to meet the high demand of the construction industry, account for a significant amount of global Greenhouse Gas (GHG) emissions, integration of climate with resource use policies is highly needed. Useful methods, indicators, and tools should be promoted to exploit synergies and to identify and minimize possible trade-offs. In this research, the tendency of material footprint assessment within sustainability assessment schemes for buildings is studied. Needs for quantifying material footprint within life cycle assessment (LCA) boundaries of buildings are identified. A methodology of assessing material footprint in relation to climate footprint is developed, using available life cycle databases for construction materials. The material footprint is measured in terms of Raw Material Input (RMI) and Total Material Requirement (TMR), RMI refers to the cumulative used raw materials and TMR accounts for all primary materials extracted from nature, including both used and unused materials. The water footprint includes quantitative water use (WSFquan), regionally weighted using the Available Water Remaining (AWARE) method. The climate footprint is quantified by the indicator Global Warming Impact (GWI) using Global Warming Potential (GWP) values from the fifth assessment report of the Intergovernmental Panel on Climate Change (IPCC).The methodology approach is tested for different building elements such as foundations and exterior walls. In terms of the whole building, the footprint is calculated per square meter of the usable floor area. The methodology is also applied for the assessment of different concrete production technologies such as the Ultra-High-Performance Concrete (UHPC) in comparison with conventional concrete. Results are provided for a bridge construction design. Sensitivity analyses are conducted to measure the potential saving of natural resources and GHG emissions. The approach is described and tested for different life cycle phases of a construction project according to EN 15804 and EN 15978. Building Information Modelling (BIM) provides a collaboration platform betweendifferent building design parties to facilitate the decision-making process. Recently, BIM has been widely used to increase environmental performance during the design phase of the building. To enhance the BIM environment with the ability of resource and climate footprints assessment, the novel application Sustainable Resource Application (SURAP) is developed. The application has integrated the developed methodology in BIM. By using SURAP, architects, construction planners, and engineers can quantify resource and climate footprints per square meter of usable floor area of the building. Results can be visualized to identify which part of the building is associated with the highest environmental impact. The output results of the SURAP are validated using conventional and BIM-based LCA tools.