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Topic review
Updated time: 30 Oct 2020
Submitted by: Jose-Luis Molina
Definition: The are thousands of large dams over the globe. The importance of dams is rapidly increasing due to the impact of climate change on increasing hydrological process variability and on water planning and management need. This study tackles a review for the concrete arch-dams’ design process, from a dual sustainability/safety management approach. On one hand, Sustainability is evaluated through a design optimization for dams´ stability and deformation analysis. On the other hand, safety is directly related to the reduction and consequences of failure risk. For that, several scenarios about stability and deformation, identifying desirable and undesirable actions, were estimated. More than 100 specific parameters regarding dam-reservoir-foundation-sediments system and their interactions have been collected. Also, a summary of mathematical modelling was made, and more than 100 references were summarized. The following consecutive steps, required to design engineering (why act), maintenance (when to act) and operations activities (how to act), were evaluated: individuation of hazards, definition of failure potential and estimation of consequences (harm to people, assets and environment). Results show that the area to model the dam–foundation interaction is around 3.0 Hd2, the system-damping ratio and vibration period is 8.5% and 0.39 s. Also, maximum elastic and elasto-plastic displacements are ~0.10–0.20 m. The failure probability for stability is 34%, whereas for deformation it is 29%
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Topic review
Updated time: 30 Aug 2021
Submitted by: Sepehr Abrishami
Definition: The main goal of this study is to explore the adoption of a design for manufacturing and assembly (DfMA) and building information management (BIM) approach during the whole lifecycle of assets. This approach aims to tackle issues inherent in the design of traditional construction methods, such as low productivity and quality, poor predictability and building performance, and energy use, through the implementation of a BIM library of off-site components. In recent years, a renewed interest has been directed to the attempt to provide solutions to these urgent problems through the adoption of new advancements in technologies. However, while there are studies focussing on a BIM-DfMA approach, there is a lack of research regarding how this approach should be adopted during the whole lifecycle of the assets. Furthermore, to the best of our knowledge, defining an efficient way of developing a component-based BIM object library has not yet been included in any of the available studies. A mixed methodology approach has been used in this research. A conceptual framework was developed as the result of an extensive literature review to investigate new advancements in the AEC sector.
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Topic review
Updated time: 06 Sep 2021
Submitted by: Mirko Locatelli
Definition: Information Modelling and Management (IMM) methods for Most Economically Advantageous Tender (MEAT) can promote the adoption of environmentally sustainable practices. Despite the wide regulatory framework and existing drivers, Construction and Demolition Waste (CDW) trend is still upward. The literature review regarding IMM and CDW management implementation during the design phases is mainly focused on studies and applications from the designer and contractor’s points of view, although few studies focused on Green Public Procurement (GPP) and CDW management integration from the Public Client’s point of view. This research aims at investigating the integration and efficiency of MEAT and IMM to promote the application of sustainable strategies focused on waste reduction and resource valorization. The study investigates the Public Client’s role in promoting sustainable practices, introducing digital material inventory and BIM during the design phases, and including environmental award criteria in the call for tender documents. A Design Build (DB) procurement model is considered in the case study of a brownfield renovation and the construction of a new school in northern Italy. The methodology provided the Public Client with a replicable method to evaluate the environmental impact of the bids, allowing for proper selective demolition planning, CDW decrease, and organization while promoting their integration in companies’ expertise and procedures.
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Topic review
Updated time: 01 Nov 2020
Submitted by: Marta Maria Sesana
Definition: According to its strategic long-term vision, Europe wants to be a climate-neutral economy by 2050 and buildings represent a sector with low-cost opportunities for high-level CO2 reduction. The main challenge is to increase the renovation rate of the existing building stock, which currently is around 1.2%/year. The ALliance for Deep RENovation (ALDREN) project developed a Holistic and reliable European Voluntary Certification Scheme to trigger deep renovation of non-residential buildings. The ALDREN approach is composed by a sum of protocols and tools with the goal of encouraging property owners to undertake renovation of existing buildings using a clear, robust, and comparable method using coherent and harmonized instruments, the so called ALDREN EPC and ALDREN Building Renovation Passport for non-residential buildings.
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Topic review
Updated time: 09 Oct 2021
Submitted by: Mohamed Marzouk
Definition: BIM is defined as the“digital representation of physical and functional characteristics of a facility”. It is the process of producing and maintaining project related information throughout the different phases of the building life cycle. The information not only constitutes geometric properties of the building elements, but also extends to include any customized information related to the building. There are various uses for BIMs, which include 3D visualization, 4D scheduling, quantity take-off, etc. Although the use of BIM functionalities is an active field of research, exploiting the advantages of BIM in the deconstruction stage remains limited.
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Topic review
Updated time: 08 Feb 2021
Submitted by: Ali khudhair
Definition: The evolution of the construction industry is associated with the continuous implementation of new technologies. Building Information Modelling (BIM) has revolutionised the collaboration and data sharing processes in the architecture, engineering, and construction (AEC) industry.
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Topic review
Updated time: 17 Aug 2021
Submitted by: Oludolapo Olanrewaju
Definition: The Architecture, Engineering, Construction and Operations (AECO) industry constitutes a cornerstone of a country’s economy and is predicted to account for circa 15% of the World’s Gross Domestic Product (GDP) by 2030. Construction outputs create critical infrastructure and buildings that cumulatively constitute the built environment which provides the basis for society and other industries to flourish; hence, the economic contribution is perhaps greater than the estimated “direction” contribution to the GDP. Annually, the AECO industry is responsible for nearly 40% of the total energy use, 32% of CO2 emissions and 25% of the generated waste in Europe. Furthermore, in many developing countries, the construction industry has undergone substantial fluctuations to accomplish its local economic objectives. As a result, many developing countries’ financial procedures are in the process of improvement. In these countries, construction projects frequently face several time-schedule delays. Furthermore, the industry is faced with numerous productivity issues stemming from the lack of adoption of emerging technologies or concepts such as Building Information Modelling (BIM), blockchain, Internet of Things (IoT) and Industry 4.0. As a result, the construction industry in developing countries does not achieve government goals for society and clients, and a need for developing “overall success construction projects” that are resource-efficient has been underlined in the literature.
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Topic review
Updated time: 05 Nov 2020
Submitted by: Abdelrahman Elbakheit
Definition: BIPVs offers tremendous potential to building designers or Architects, provided that their introduction is well considered and catered for from the very beginning of the design stages and not left afterwards. They can influence building orientation footprints, layout and form; this is apart from changing the building as well as being an important element of the environmental setting and building systems. It is important here to stress their recognition as an essential part of the energy strategy of the building and it’s functioning, since careful and proper integration of PVs with other building elements is a key factor to their success. Moreover, their high aesthetical values in terms of neat, coloured and high-tech prestigious appearance can be a corner stone for more innovative architectural designs. To ensure proper integration of PVs into the building fabric we need to point certain factors that influences Pv performance as they are integrated in a building design. As well as assessing the nature and type of loads involved. Influence of PVs on building factor is also important, since PVs are considered expensive nowadays it is fairly important to use them as optimal as possible; this remind us with the use of glazing in the middle ages, which was expensive and rare, nowadays we see them almost every where.
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Topic review
Updated time: 23 Apr 2021
Submitted by: Marek Chalecki
Definition: Striving for reduction of production costs and constraints on natural resources cause the use of waste materials as substitutes of traditional raw materials to become increasingly important. Dynamic development of sewerage systems and sewage treatment plants observed over the recent years leads to increase of mass of the produced sewage sludge. According to the Waste Law, the municipal sewage sludge can be used if it is properly stabilized, e.g., through thermal processing. This process results in significant quantities of fly ash which must be properly utilized. The description presents a brief highlight of solution of the abovementioned problem — the possibility of application of fly ash wastes as a cement substitute in the concrete manufacturing. If a predefined quantity of cement is replaced by the fly ash, then one can obtain cement composite with good strength parameters. This assumption is confirmed by the investigations.
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Topic review
Updated time: 12 Oct 2020
Submitted by: Paula M. Esquivias
Definition: The circular economy in the building sector is an approach aiming at minimizing waste and emissions, as well as closing water, energy, and material loops. Under a circular built environment, landfilling is no longer an option to handle construction and demolition waste, and design for disassembly has a central role. Design for disassembly is a concept in which buildings and products are designed intentionally for material recovery, value retention, and meaningful next use.
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