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Ageliki Valavanoglou, Danijel Rebolj and Detlef Heck

Construction Delay and Disruption Claims Assisted Through BIM Technology

Abstract: Construction projects are frequently subjected to delay and disruption leading to dispute between project participants regarding the entitlement to compensation. Challenges associated with the analysis of delay and disruption and the subsequent preparation of the claim conducted by a forensic analysis expert include the difficult retrieval of scattered, unstructured information and lack of adequate documentation, leading to weak analysis and therefore insufficient proof of causation and entitlement.This paper illustrates the chronological information generation regarding delay and disruption in the construction phase proposing a framework based on Building Information Modelling and structured information integration, to facilitate easy filing and retrieval of relevant documentation for claim preparation.

Keywords: Delay and Disruption Claims, Documentation, Forensic Analysis, Building Information Modelling, BIM Collaboration Format

DOI: https://doi.org/10.24928/JC3-2017/0192

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Series: jc3:2017 (browse)
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Aleš Mrkela & Danijel Rebolj

Automated construction schedule creation using project information model

Abstract: In this paper we will propose a method of using a project information model (PIM) for creating construction schedules. In the paper we will briefly review current available scheduling possibilities, which use combination of BIM and scheduling software. We realized that BIM lacks user specific data that is vital for proper schedule creation and has, on the other hand, too complex structure and software tools for planning personnel to understand. Through the use of simple 3D model viewer, user specific data and BIM, we are proposing a novel approach of schedule estimation in construction, which we call project information model (PIM). PIM is the process that is based on internal logics, that creates the estimated schedule and resource usage. After the PIM process, the automatically created schedule is included in BIM and made available to project managers and other construction stakeholders, to coordinate and carry out activities.

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Series: w78:2009 (browse)
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Andrej Tibaut, Danijel Rebolj

TOWARDS METHODOLOGY FOR HARMONIZATION OF SEMANTICALLY DIFFERENT BIM's

Abstract: Research focus of the paper are heterogeneous information systems. Heterogeneity within a set of software applications can be attributed to the fact that their collaboration is hindered due to the conflicts in software architecture, communication protocols and/or data representation. General interconnectivity and emerging interoperability have caused the fall of mainframe-based systems, which in turn led to variety of information systems with local data representations, communication protocols and software architectures. Today these information systems need to collaborate in different engineering projects. Existing approaches, such as common framework, integration with standard scheme and data mediation, try to diminish the undesired effects within heterogeneous systems. The approaches are indeed successful because they eliminate all conflicts at design time. This way collaborating applications have to abandon their local data views. In this paper heterogeneity is regarded as a property of an information system while disharmony of an information system is defined as a state of the system. Further, structural, semantical and functional disharmony is defined as part of overall information systems’s disharmony. As a consequence a new methodology called DRAGOn (Disharmony Resolving with Agents and Ontology) is proposed. The methodology aims to dynamically resolve structural and semantical disharmony by preserving applications’ local data views. Another novelty is the definition of conceptualization for structural and semantical disharmony (Disharmony ontology) and the use of software agents. Disharmony ontology is specified in OWL. The agents use the ontology for resolving of structural and semantical conflicts between applications at runtime. Agents communicate via shared communication space based on Java technology. The mediation is incremental, which means that agents are able to build their local ontologies. The ontologies are used as persistent meta-data repositories of concepts (structure and semantics) that are captured from applications during runtime.Extensive applicability of the DRAGOn methodology is expected in information system clusters with rich and complex data content, namely management of construction projects.

Keywords: Interoperability, building information model, quality of semantic and structure, semantic and structural difference, mediation, ontology

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Series: w78:2008 (browse)
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Danijel Rebolj, Riko Šafarič, Andrej Šorgo and Nenad Čuš Babič

SMARTCON, Self-Maintaining and Rejuvenating Constructions

Abstract: Infrastructure systems are established and maintained to satisfy our societal needs for living and transport. The European Roadmap for Cross-Modal Transport Infrastructure Innovation states that by 2030 an improvement of 50% in infrastructure performance, risk and cost versus a 2010 baseline should be achieved. However, current maintenance methods require intense engagement of highly trained experts and exposure to hazards, they are time consuming and hinder the normal use of constructions. Since infrastructure systems are not able to "care for themselves" they create a heavy burden for society in terms of regular maintenance and total cost of ownership. Therefore, SMARTCON proposes to transform passive constructions into smart structures able to take care of themselves. The envisaged system shall consist of a biomimetic swarm of robots able to perform continuous inspection, analysis of inspected indicators, decision support systems to advise on necessary maintenance or rejuvenation actions and to evaluate implemented actions. The paper is presenting the SMARTCON concept, the preliminary research, and the intended results of a three-year project beginning in early 2017. The project is focusing on bridges as they are considered to be among the most critical infrastructure objects.

Keywords: Automation, Infrastructure, Bridges, Inspection, Maintenance, Rejuvenation, Robot Swarm, Biomimetics

DOI: https://doi.org/10.24928/JC3-2017/0164

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Series: jc3:2017 (browse)
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Danijel Rebolj

Global Collaboration In Construction IT Education

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Series: w78:2006 (browse)
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Maryam Montazer, Danijel Rebolj and Detlef Heck

A Comparison Review of Automated Construction Scheduling Methods

Abstract: Scheduling is considered the major part of the planning phase in construction project life cycle. Traditional manual scheduling methods, especially in large-scale projects with huge amount of activities and various construction methods and resource types still remain as the time-consuming, error-prone and complex process. Therefore, diverse construction framework and templates have been developed to automatically generate the construction schedules, not only to increase the accuracy and speed of scheduling but also to decrease the substantial manual efforts in construction project planning, significantly. This article reviews the research on automated construction scheduling and classifies them into three main categories including the Artificial intelligence (AI)-based scheduling, simulation-based scheduling and integrated BIM-based scheduling. The strengths and weaknesses of some specific methods are identified and discussed. Finally, advantages of Integrated BIM-based scheduling in comparison with other methods have been demonstrated, and a new direction for further research indicated.

Keywords: Automated Construction Scheduling, Simulation Based Scheduling, Knowledge-Based Scheduling, Integrated BIM-Based Scheduling

DOI: https://doi.org/10.24928/JC3-2017/0010

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Nenad _uš Babi_, Danijel Rebolj

Learning About BIM in Early Design Using Inpro Training Environment

Abstract: The paper presents an approach of dissemination of research results from research project to construction industry praxis. It addresses the problem of insufficient skills that prevent adoption of novel methods of working and technology. Presented work originates from European integrated project InPro, which aim is to develop methods and technologies that facilitate industry changeover to a model based and collaborative way of working especially in early design phase of the construction project. To support project goals and facilitate the industrial transformation and industrial technology take-up, the project implemented tools and developed curricula and materials for training and education of management, architects, engineers, and construction workers, as well as university students. The paper presents training environment developed to support training on model based work practices and enhancement of hands-on skills with regard to model based working focusing on early design processes. Technical solutions, content topics and development experiences are described. Content of training courses and curricula is based on experiences from live project demonstrations and use cases.

Keywords: education, training, business courses, university curricula, model based working

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Series: w78:2010 (browse)
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Peter Podbreznik, Danijel Rebolj

Building Elements Recognition Using Site Images And 4D Model

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Series: w78:2006 (browse)
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Peter Podbreznik, Danijel Rebolj

Real-time activity tracking system – the development process

Abstract: The paper describes the development process of the 4D-ACT (Automated construction tracking) system. The paper also discusses new potentials of the system regarding real-time information flow in a construction process. The 4D-ACT automatically recognizes the building elements from the building site and searches for matches between planed and performed activities. Building elements are recognized automatically from images, created with cameras installed on the building site. The 4D model is needed as the knowledge base of relations between the designed geome-try elements and activities in the process model, which ensures identification of activities on the basis of the recognized building elements. During the recognition process, the algorithm uses the 4D model for additional information, to be more successful. The concepts of the system and the algorithm have been tested in laboratory experiments and are pre-sented in the paper.

Keywords: 4D model, computer vision, pattern recognition, 3D reconstruction, activity tracking

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Series: w78:2007 (browse)
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Tomasz Arciszewski, Danijel Rebolj

Challenges of civil engineering education

Abstract: The paper discusses the present and coming challenges of civil engineering education, including leader-ship, creativity, computing, security, globalization, and climate changes-related challenges. In more general terms, it addresses the fundamental issue of the present focus on mostly quantitative, or numerical, aspects of civil engineering in the context of a shift from art to science in engineering education. The paper proposes a Renaissance in civil engi-neering education through the reinstatement of the lost balance between creativity and leadership on one side and teaching only the analytical knowledge and skills on the other side. Finding such a balance could be accomplished im-plementing the Da Vincian principles in civil engineering education and through the development of a modern holistic body of knowledge in civil engineering. The paper also briefly discusses both the ASCE and the European Union efforts to improve the civil engineering education. Finally, globalization of this education is proposed, which would maximize the utilization of the limited resources and would create a new era of global cooperation.

Keywords: civil engineering education, challenges, balance of art and science, quantitative and qualitative knowl-edge and skills, leadership, creativity, computing, security, globalization, globalization of civil engineering education

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