Assessment of Green Building Materials’ Attributes to Achieve Sustainable Building Façades Using AHP (original) (raw)
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2019 International Conference on Sustainable Energy Engineering and Application (ICSEEA), 2019
Since buildings and their construction materials exploit natural resources as well as the effect on energy consumption and carbon dioxide emissions, evaluating building materials is needed to have more sustainable buildings. This study proposes a methodology to define the proper selection of green building materials that can be used for building façades; whilst taking its thermal performance and energy efficiency into account. Additionally, the study compared the energy consumption for six conventional materials for two types of buildings (Educational, Residential) in four climate zones using a simulation program (DesignBuilder). It included also the embodied carbon and equivalent CO2 for different types of used external façades materials. The evaluation and results is an important step to identify the suitable material that could be replaced with green material and determine how it performs in terms of simulation results and matching with the proposed criteria. The results show enhancement of thermal comfort when replacing a conventional material Brickwork with an environmentally friendly one (Autoclaved Aerated Concrete Block). Moreover, it has a positive impact regarding sub-criteria (from the proposed framework). However, the proposed green material couldn't achieve the expected performance regarding energy performance (as it achieved a minor enhancement from 3245.07 to 3239.1 KWh, U-value for both materials is close) or embodied energy (as the increase of kgCO2 from 758 to 1649.3 due to cement which is one of its ingredients).
Assessing the Sustainability of Existing Buildings Using the Analytic Hierarchy Process
American Journal of Civil Engineering, 2013
Relative concepts of sustainability are more and more influenced by societies around the world. The construction industry, especially for building construction development, is being accused of promoting environmental impacts that range from excess use of resources to pollution generation. This paper present an application of the sustainability concept applied to buildings, as well as, a contribution to the development of practices, methodology and tools for evaluation of already existing buildings. In order to achieve that, this study will detail how current systems to evaluate building performance operate, and how can we improve them. The Analytic Hierarchy Process (AHP), a multi-criteria method, is used as a tool to investigate the relative importance of the criteria, sub-criteria and families of indicators established by the researcher and interested parties, and adjust the proposed system to the local culture. AHP usage allowed a deeper insight into the problem.
A Novel Green Rating System for Existing Buildings
Sustainability
Green buildings are becoming an essential part of sustainable development. There have been several research trends for green buildings since 1995. The present study presents a roadmap for green/sustainable research trends and proposes a new green building rating system for existing buildings. A questionnaire was established and answered by experts, where answers were analyzed using the decision-making tool Analytical Hierarchy Process. Analytical Hierarchy Process is responsible for weighing and ranking the weights of alternatives. A novel checklist for existing buildings was structured and consisted of seven main categories, each comprised of different subcategories with different weights according to their importance and priority. The newly proposed rating system and Leadership in Energy and Environmental Design (LEED) for maintenance and renovations were both used to evaluate a Nile University building in Egypt in order to identify how the environment affects the results of each ...
Application of analytic hierarchy process in the green building criteria comparison
Proceedings of the International Academy of Ecology and Environmental Sciences, 2022
Construction activities consume natural resources and produce pollution. It is important to decrease construction's negative impact on natural resources and the environment. Green building is an environmentally sustainable building to decrease the environmental impacts and increase environmental conservation. The present study aimed to compare green building criteria. The study was conducted by adopting 3 dimensions with 9 indicators and 79 parameters relevant to the green building criteria. For comparison of the green building criteria, a three-level hierarchical structure was constructed in which Level 1 was the green building criteria, Levels 2 and 3 as the 9 indicators, and 79 parameters, respectively. Analytic Hierarchy Process (AHP) was used for criteria comparison. The data were collected from the field experts via questionnaires and pairwise. The parameters' weights calculate using Expert Choice Software and the most important parameters are presented according to their weights. The results indicated priorities of the green building parameters from the environmental, economical, and social perspectives denoted as dimensions. The results can be useful to green building engineers.
Impact of Environmental Assessment of Green Building Materials on Sustainable Rating System
Advanced Materials Research, 2013
As education and concern pertaining to environmental and sustainability issues like implications of resources destruction, decrease in bio-diversity as well as climate change multiply, so has the need for housing developments that lead to less damaging effects on the environment, whilst enabling living standard to be sustained. Builders, developers and material providers have addressed this demand by creating approaches and technologies that minimize energy, water and main material consumption, decrease greenhouse gas emissions and sustain or enhance surrounding ecological systems and services. Several administration and non-governmental institutions in addition have aimed to change the sustainability of the building industry by developing green rating systems that can be used to evaluate the environmental performance of new and existing building. This paper discusses material resources criteria and the impact as a sustainable rating tool.
2012
Material selection is a complex and delicate task determined by the immense number of building material options. Likewise, multiple factors are often considered by the architect when evaluating the various categories of building materials. As a result, these sets of factors or variables often present tradeoffs that make the decision process even more complex. To ease the material-selection process, this article examines one aspect of the research objectives: the relevant factors or variables needed to develop a systematic and efficient material-selection system. Through the analysis of frequency data and results of a pilot study, it identifies some of the potential factors that will impact architects decisions in their choice of green vernacular building materials, during the design-decision making process. The application of the criteria for the quantitative evaluation and selection of the best alternative building material, using the Analytic Hierarchy Process (AHP) model, are discussed. The aim is to develop a multi-factorial analytical decision support toolkit to assist architects assess their consequences in terms of whether or not the material option is likely to move towards sustainability objectives. An example is included to illustrate the AHP approach. The argument is advanced that the explicit incorporation of sustainability
Buildings, 2012
Material selection is a complex and delicate task determined by the immense number of building material options. Likewise, multiple factors are often considered by the architect when evaluating the various categories of building materials. As a result, these sets of factors or variables often present tradeoffs that make the decision process even more complex. To ease the material-selection process, this article examines one aspect of the research objectives: the relevant factors or variables needed to develop a systematic and efficient material-selection system. Through the analysis of frequency data and results of a pilot study, it identifies some of the potential factors that will impact architects decisions in their choice of green vernacular building materials, during the design-decision making process. The application of the criteria for the quantitative evaluation and selection of the best alternative building material, using the Analytic Hierarchy Process (AHP) model, are discussed. The aim is to develop a multi-factorial analytical decision support toolkit to assist architects assess their consequences in terms of whether or not the material option is likely to move towards sustainability objectives. An example is included to illustrate the AHP approach. The argument is advanced that the explicit incorporation of sustainability
Civil Engineering and Environmental Systems, 2019
Green building (GB) rating systems are developed to measure the level of extent or sustainability of buildings. It is very important to focus on the attributes that require more cost and are contributing more to decreasing the negative impact of construction on the environment or nature. This analysis presents an idea-based conceptual model for prioritising the GB attributes by considering the environmental, social, and economic pillars of sustainable construction or monetary mainstays of manageable development. To analyse the environmentally and socially essential attributes, an analytical hierarchy process (AHP) and an entropy method were used. For the economic analysis, a data envelopment analysis (DEA) was applied. If the decision makers give more importance to the environmental and social pillars of sustainability then they can consider the attributes such as occupants' health, safety and comfort, climatic conditions, the cost of investment, operation and maintenance cost, and indoor air quality. If the construction stakeholder wishes to achieve more green points with limited funds then the important attributes are: operation and maintenance cost, material recycle, low-impact construction site techniques, locally available materials, and soil pollution. The proposed approach can advance GB construction practices that are not liable to result from conventional practices.
Green Energy and Technology Values and Functions for Future Cities, 2020
With the increasing concern of the building environmental impacts, governmental regulation and people own consciousness have shown rising interest in buildings protocols and methods for sustainability certification. Life cycle assessment (LCA) represents a useful tool for designers, companies and building owners in every phase of the construction process, but its daily use encounters several applicability problems. It is indeed hard to take into account crucial parameters regarding the economic, aesthetic and energetic performances of each alternative in a whole sight. The aim of this paper is to exploit LCA techniques to evaluate the environmental impacts of three different types of roof analysed within the building component scale. A green, reverse and simply waterproofed roofs have been drawn and split into each component’s environmental impacts, whereas a multi-criteria decision analysis (MCDA) tool integrating economic, social and aesthetic parameters. LCA results showed that the reversed roof solution gives out the minimum environmental damage (−69, 46% compared to the common waterproofed roof). The results from this LCA analysis are included in a more holist MCDA approach which is able to consider different objectives (thermal performance, construction cost, aesthetic performance, social utility, environmental impact). This integrated evaluation is conducted according to different scenarios and points of view (eco-social and business-as-usual) and gave scenarios with a synoptic assessment of each maximized performance. Conclusive remarks show that an MCDA qualitative analysis coupled with the quantitative result from LCA appeared to be very helpful in comparing options in the design phase of a building, and a useful communication tool among all the stakeholder of the construction process. This new approach based on the LCA-AHP analysis can help decision-makers to find sustainable alternatives among available options and promises a more sustainable product or process.
Civil and Environmental Engineering Reports, 2024
The article discusses current trends in designing green and eco-friendly façades of buildings of different functions in Poland and around the world. Information collected on completed façade projects, associated research and conclusions formulated on the basis thereof, indicate trends and possibilities for the use of contemporary material solutions and technologies in designing various forms of vertical 'greenery' which support sustainable development of urban areas. The main objective of the research was to identify the most important features of green façades as eco-friendly architectural solutions. A case study with descriptions of the features and qualitative elements of 100 of the most architecturally interesting buildings with characteristic external wall structures was constructed for research purposes. The sites selected for the case study represent a review of global trends. The data was then used for a multi-criteria analysis of green façade systems from the perspective of eco-friendly architectural solutions. The conducted research, analyses and discussions on solutions already in place were then implemented as guidelines for innovative architectural design solutions, which were presented at the Faculty of Architecture at Poznań University of Technology in the form of selected diagrams and student visualisations. These comprised highly aesthetic compositions, possible to implement in the near future.