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Anastasiya Yurchyshyna, Catherine Faron Zucker, Nhan Le Thanh, Celson Lima, Alain Zarli

Towards an ontology-based approach for conformance checking modeling in construction

Abstract: This paper gives an overview of a formal ontological approach of conformance models for regulations in Construction aiming at answering the research question: “is an IFC-represented building project compliant to a set of construction rules?” The study analyses three key subtasks: (i) transformation of the IFC of the construction project; (ii) regulations formalisation; (iii) conformance checking reasoning. While analysing the IFC model redundancy and/or insufficiency for conformance checking reasoning, we suggest an intermediate RDF-based model, semantically en-riched and regulation-oriented. The regulation formalisation is studied under two viewpoints: the formalisation of pa-per-based regulation texts to be automatically used in reasoning and the development of the representation of ontology-based regulations. The construction rules are represented as a set of rules which premise and conclusion are RDF graphs. The conformance checking starts from the alignment of the construction project ontologies to the prem-ise/conclusion ontologies of the construction rule. Then, the checking in construction is seen as reasoning in terms of the corresponding RDF graphs. The paper concludes with a preliminary conceptual framework based on Semantic Web technologies modeling the conformance checking problem, as well as the technical solutions for its implementation. The respective architecture and future challenges of the work are also discussed.

Keywords: conformance checking, ontologies in construction, e-regulations, construction project conformance to regulations, semantic web in construction

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Full text: content.pdf (428,706 bytes) (available to registered users only)

Series: w78:2007 (browse)
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Andresen J, Baldwin A, Betts M, Carter C, Hamilton A, Stokes E, Thorpe T

A Framework for Measuring IT Innovation Benefits

Abstract: This paper presents a new framework for measuring the benefits of IT in construction. The framework is based on the principle that benefits realisation must be managed by: planning for strategic alignment and business-driven exploitation, managing the process of predicting benefits, and by measuring resulting benefits after a system or innovation is implemented. Three distinct types of benefits are identified within the new framework associated with business efficiency, business effectiveness and business performance. A key barrier to the more effective exploitation and application of IT in the construction sector has been the lack of investment on a scale comparable with other sectors. A primary reason cited for the low level of investment is the low level of perceived benefits from IT investments amongst construction business managers. Many benefits evaluation methods exist and are widely applied in other sectors. Benefits evaluation methods in construction are under-utilised. One reason for this is the lack of fit between these methods, and their associated language, with the peculiarities of the construction sector. The new framework presented in this paper has been derived for specific application to the construction sector. The framework has been subjected to testing and application within UK construction organisations. The results of this testing suggest a number of improvements in the benefits realisation process.

Keywords: information technology, business benefits, innovation, evaluation framework

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Full text: http://www.itcon.org/2000/4 (available to registered users only)

Series: itcon:2000 (browse)
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G Zimmermann & G Suter

A multi-floor topology to geometry transformation procedure based on shape functions

Abstract: Building floor plans are often outlined as schematics with zero wall thickness. Using shape functions, wall dimensions and circulation areas can be inserted and more detailed drawings generated. This topology-to-geometry transformation does not solve vertical constraints in multi-floor topologies, as for example the alignment of load bearing walls. The paper shows how dissection based rectangular floor plans can be modified by introducing space area extensions to resolve the vertical constraints. Penalty values can be introduced to control the distribution of area extensions. The algorithm is based on defining constraints between nodes of the dissection tree. In the presence of multiple constraints, several passes through the dissection tree may be necessary. The topology-to-geometry transformation is used in every pass to check if the constraints can be fulfilled. The algorithm is demonstrated with an example.

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Full text: content.pdf (215,962 bytes) (available to registered users only)

Series: w78:2005 (browse)
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Permission to reproduce these papers has been graciously provided by the Technische Universität Dresden.


J Amann, M Flurl, J R Jubierre, A Borrmann

An Approach to Describe Arbitrary Transition Curves in an IFC-Based Alignment Product Data Model

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Full text: content.pdf (145,618 bytes) (available to registered users only)

Series: w78:2014 (browse)
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Jack C.P. Cheng and Mohit Mangal

Automated Optimization of Steel Reinforcement in RC Building Frames Using BIM and Hybrid GA

Abstract: Design of steel reinforcement is an important and necessary task for designing reinforced concrete (RC) structures. Currently, steel reinforcement design is performed manually or semi-automatically using computer software such as ETABS, with reference to building codes. These methods are time consuming and sometimes error-prone. With the aid of advanced BIM technology, steel reinforcement design could be automated for fast, economical and error-free procedures.This paper presents a BIM-based framework for automated optimization of steel reinforcement in RC building frame using developed three-stage hybrid genetic algorithm (GA). Optimization includes selection and alignment of steel reinforcement in RC building frame for the minimum steel reinforcement area, including longitudinal and shear/confinement steel reinforcement. The first and second stages optimize the longitudinal reinforcement while the final stage optimizes the shear/confinement steel reinforcement incorporating design code (BS8110) and buildability constraints. A three-storey RC building frame is analysed to check the applicability of the developed optimization framework and its improvement over current design approaches. The results show that the developed optimization framework can minimize the steel reinforcement area quickly. Automated 2D view of RC elements is then created to visualize the optimized steel reinforcement results.

Keywords: Building Information Modelling, Optimization, Interoperability, Steel Reinforcement Design, RC Frame

DOI: https://doi.org/10.24928/JC3-2017/0226

Full text: content.pdf (1,355,088 bytes) (available to registered users only)

Series: jc3:2017 (browse)
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Mao S,Shen X,Lu M,Wu X

Real-time tablet-based virtual reality implementation to facilitate tunnel boring machine steering control in tunnel construction

Abstract: On the majority of tunneling projects, steering a tunnel boring machine (TBM) currently relies on a laser station which projects a laser beam onto a laser target board mounted on the TBM. However, laser target boards lack accuracy and reliability, thus potentially contributing to quality defects and increased risks of schedule delay and budget overrun in tunnel construction. This research has developed a cost-effective, real-time solution called “virtual laser target board (VLTB)” to substitute for physical laser target boards in guiding TBM during construction. Through integrating automation control mechanisms, innovative computing algorithms, and wireless network technologies, the VLTB technology transforms a popular survey tool, the robotic total station, into a construction control robot which precisely tracks and positions the TBM. By applying an enhanced point-to-angle computing algorithm, VLTB calculates the exact coordinates of the cutter head center on the working TBM in millimeter-level accuracy. The invisible cutter head center is projected onto a “virtual laser target board” on a tablet interface in relation to the as-designed alignment. Based on field testing, VLTB is found to be able to lend real-time, relevant assistance to TBM operators and tunnel surveyors. Compared to other advanced technologies in the market, VLTB provides a simpler and more flexible solution to ensure tunnel alignment control and enhance quality and productivity performances in tunnel construction.

Keywords: Tunnel Construction,Tunnel Boring Machine,Virtual Reality,Mobile Computing,Machine Control and Guidance,Robotic Total Station

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Full text: content.pdf (855,959 bytes) (available to registered users only)

Series: convr:2013 (browse)
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Takashi Kitahara, Yasutaka Tagawa, Shizuo Imaoka, and Yuichi Yamamoto

Alignment System Of Proton Accelerators For Cancer Therapy

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Full text: content.pdf (631,643 bytes) (available to registered users only)

Series: w78:2006 (browse)
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Thayaparan Gajendran, Graham Brewer

Use of Online Communication Portals in Construction Projects: Issues Associated to Alignment of Technology and Processes

Abstract: The online portals have been in use as an information and communication tool for some time in construction projects. Although they have brought significant benefits, the way they are implemented in projects is crucial to deliver the desired outcomes. Technology and processes are two critical agents that determine the effective use of online portals, as in any other Information and Communication Technology initiative. Moreover the challenges facing alignment of technology and processes in online portal implementation is greater in ‘intra organisation’ context than in ‘inter organisation’. The supply chain perspective is employed to contextualise the intra organisation focus in the context of this research. Therefore, this paper aims identify technology and process alignment issues when online portals are used to share information and to communicate across construction project supply chains. A case study strategy using interview method is employed to collect data. Coding and thematic analysis is used to identify the relevant issues. This paper will conclude by identifying technological and process issues impacting on the flow of information and communication in construction project.

Keywords: Online portals, technology, process, alignment, supply chain

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Full text: content.pdf (332,806 bytes) (available to registered users only)

Series: w78:2010 (browse)
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Thomas Mills

Achieving BIM And CIM Implementation Through Quality Management

Abstract: This paper presents a studied proposition that the domain of Building Information Modeling (BIM) and Civil Information Modeling (CIM) is Quality Management. This proposition is approached from a thorough review of BIM and CIM capabilities, the operation actualization in design and construction, the individual value added and extracted throughout the workflow process, and the value added to the owner in delivering an accurate model. The paper first presents the value added and received by the creation and use of information modeling; secondly the paper addresses the workflows associated with the information model’s production, from model inception to archival record; it follows this with a discussion on the alignment of the model with various operational focuses with the cycle of model documentation, utilization, model maintenance, commissioning, and owner transfer. The paper closes with insight into Quality Management as the most appropriate champion forwarding the integration of the information modeling for maximum value added in the development of the built facility.

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Full text: content.pdf (133,647 bytes) (available to registered users only)

Series: w78:2010 (browse)
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Ting S K, Wong H Y

Legal challenges & strategies in e-procurement in construction

Abstract: E-commerce is not wholly a technology phenomenon, though technology is utilized to facilitate the business processes. It changes the conventional workflow and practices. E-procurement in the Singapore construction industry is still in its infancy stage. Though Singapore construction companies should be encouraged to utilize informative technology (IT) systems, the potential legal challenges that surfaced while integrating these systems with the existing legal systems must be highlighted and understood to protect their corporate interests and assets. The perception of some Singapore construction players and application service providers (ASPs) on these issues related to lack of alignment in jurisdictions, legal liability, insecurity, confidentiality and service dependency risks were supported by the results compiled from the survey questionnaire conducted. The strategies namely legislation, self-regulation, technology and information security management to minimize the related risks and damages were recommended from a multidisciplinary approach. The mechanisms favored by the surveyors namely enactment of new law, interchange agreement, Public Key Infrastructure (PKI) and education were further discussed. By combining the strategies, the construction industry can better avoid these legal pitfalls while transforming with the advancement of technology and enjoying the benefits of adopting e-commerce.

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Full text: content.pdf (131,045 bytes) (available to registered users only)

Series: w78:2003 (browse)
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Permission to reproduce these papers has been graciously provided by the University of Auckland. The assistance of the editor who provided the full texts and the structured metadata, Dr. Robert Amor, is gratefully appreciated.


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