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Ranjith K. Soman and Jennifer K Whyte

A Framework for Cloud-Based Virtual and Augmented Reality Using Real-Time Information for Construction Progress Monitoring

Abstract: Researchers are developing techniques to use augmented reality for construction progress monitoring, but these are not widely diffused. A barrier to wider use is that BIM software is often not updated in real-time between the construction office and the construction site. This paper proposes an integrated cloud-based framework to enable construction progress monitoring by creating an automated real-time bidirectional flow of information between the construction site and planning office. This seeks to take advantage of the new opportunities arising because of the consumer VR/AR devices that have come to market in the last year, and the potential for engineers and site personnel to take ownership of these low-cost devices and use them in their role. It contributes to the trajectory of research on virtual and augmented reality in construction by articulating a novel approach to construction progress monitoring through passive data acquisition, cloud-based processing and use of consumer VR/AR devices. The paper concludes by articulating next steps to develop prototypes and work with industry partners to enable them to engage in innovation.

Keywords: Construction, Augmented Reality, Virtual Reality, Cloud Computing, Automatic Data Collection

DOI: https://doi.org/10.24928/JC3-2017/0273

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Series: jc3:2017 (browse)
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Ricardo Eiris Pereira and Masoud Gheisari

Evaluation of Small UAS Acquisition Costs for Construction Applications

Abstract: Unmanned Aerial System (UAS) technologies have rapidly evolved since the 1990’s. It is estimated that the 2016 market for such systems ($2.6 billion) will quadruple ($10.9 billion) by the year 2025 (Teal Group Corporation 2016). New technological advancements in UAS design, battery duration, GPS navigation capabilities and control reliability, have made possible the development of new low-cost, lightweight aerial systems. These advancements have also generated tremendous interest by academia and industry in the construction domain for different applications such as surveying, safety, and quality, and inspection and documentation. With hundreds of UAS manufacturers available in today’s market, it is difficult to evaluate the life-cycle cost metrics of the such aerial systems. Wide differences regarding metrics such as aircraft weight, payload capabilities, and battery autonomy, make an objective assessment of expenses a daunting task. This pilot study explores the acquisition cost factors for the comparison of small UASs in the construction domain. As a result, a parametric model is presented to estimate the acquisition costs of small UASs for construction applications.

Keywords: Small UAS, Acquisition Cost, Parametric Modeling, Construction Industry

DOI: https://doi.org/10.24928/JC3-2017/0195

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Series: jc3:2017 (browse)
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Robert Amor, Ying Jiang, Xiaofan Chen

BIM in 2007 Ė are we there yet?

Abstract: As the prevalence of BIM increases in A/E/C-FM disciplines it is timely to review the standards that are being utilised and how well they are serving the discipline. The analysis presented analyses the most common standard, the IAIís IFC, from a meta-level and asks questions about the evolving model from the viewpoint of metrics for data models as well as a low level analysis of the accuracy and correctness of implementations of the data model interpret-ers. Metrics applied to the evolving versions of the IFC schema can indicate the trajectory of the schema and profile areas which may be of concern in the maintenance of the schema and applications that have to utilise the schema. Analysis of the approaches to importing and exporting data for design tools, based on the schema, help indicate how market ready the technology really is. Where commercial projects are starting to rely on the standards as a mechanism to reliably transfer semantically correct information there must be guarantees of the accuracy of the data as it is ma-nipulated by these design tools.

Keywords: data model, metrics, translator, data management

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Series: w78:2007 (browse)
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Robert Lundkvist, Anders Vennstrom

Requirements of an Inter-Project Digital Inspection System

Abstract: Characteristics of the construction industry are mobility, project orientation and the set-up of new organization in every project. The products are one-of-a-kind and seldom develop beyond the prototype phase. This is often suggested as reasons for the the low development of productivity in the construction industry, and continuous improvement and experience feedback becomes harder to accomplish from project to project. The production results are handed over from contractor to client through different inspections. The inspector creates a "punch list" with all found faults, for the contractor to correct before the construction work can be finally accepted. These often lengthy lists on documented faults are full of information that can be useful for the contractor company‚Äôs learning and experience feedback process. A previous study shows that contractors acknowledge this potential use, but they need some sort of IT system to support the inter-project management of the inspection information collected.The aim of this paper is to analyze what type of information is valuable in an inter-project inspection information system (IPSIIS), to enhance learning and feedback in construction contractor companies. Interviews have been carried out with experienced inspectors and construction engineers, and a ‚Äúbest practice‚ÄĚ for building inspections in Sweden is described. The requirements of a digital IPSIIS are analyzed, both from a regulatory point of view and from the perspective of making the inspection data useful for knowledge mining. Based on best practice, a strategic approach for the design of the user interface is presented for the successful acceptance in the industry. Some principals for codification are also discussed.

Keywords: experience feedback, information technology, inspection, quality

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Series: w78:2010 (browse)
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S Scheer, R Mendes Jr, T F Campestrini, M C Garrido

On-Site BIM Model Use to Integrate 4D/5D Activities and Construction Works:† A Case Study on a Brazilian Low Income Housing Enterprise

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Series: w78:2014 (browse)
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Se_rgio Leal Ferreira, Guilherme Kazuhisa Tanabe

COST DATABASE SYSTEM APPLIED TO REFURBISHMENT OF SOCIAL HOUSING IN BRAZILIAN CONTEXT

Abstract: In Brazil, low income people havenít a good way or help to preview the budget to their projects, especially concerning to build or refurbish their houses. Moved by this lack of opportunity, this paper describes briefly the work carried out to give to this public a system prepared in Internet basis which help them to calculate more precisely the necessary funds to implement this kind of investment.Some questions emerge: How to communicate data to the Database System related to the planed build or related to the changes desired to be applied in a house existed? The Database System needs to keep cost data of new constructions and data of refurbished constructions since the costs are very different due to the different nature of the job? How to update costs of lots of items turning the system reliable?These and other critical questions will be answered along this work and we hope that, starting from a small and specific problem we spread the possibilities of this system, reaching a level of having real helpful tools. Reaching this level, the material produced can turn a seed of more complete and helpful systems.Computational technological support of the purposed system will be IFC, PHP and MySQL.

Keywords: IFC, Building Cost, Building Budget, Building Modeling

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Series: w78:2008 (browse)
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Sebastian R,BŲhms M,van den Helm P

BIM and GIS for low-disturbance construction

Abstract: Construction and maintenance activities of bridges often bring negative impacts to the urban environment in terms of disturbance, traffic jams and disruptions, noise, dust, and air pollution. Lack of coordination between the stakeholders in strategic, tactical and operational construction planning process has been identified as a key factor behind these negative impacts. Attempts to solve this issue critically depend on an effective interoperability between ICT tools from the building domain (based on Building Information Model or BIM) and the urban planning domain (based on three dimensional Geographical Information System or 3D GIS). Research on the interoperability between BIM and GIS requires knowledge of Open BIM as well as Open GIS and their interconnection. Unfortunately, Open BIM and Open GIS have been developed separately and they have pursued different standards and technologies. Open BIM for civil infrastructure projects is still limited, especially due to the fact that the IFC open standard currently targets the building sector. Open GIS mainly relies on the use of GML/CityGML standard. This paper focuses on research to develop a solution for the interoperability of BIM and GIS, especially for the purpose of low-disturbance construction. It reports the on-going EU FP7 collaborative research project PANTURA. The preliminary achievements include a prototype solution that consists of: an architecture for the integration solution between BIM and GIS data and tools - an Application Domain Extension (ADE) that connects BIM data from the bridge with the computational parameters on disturbance in a GIS-based planning tool Urban Strategy, a configuration of open-source Deegree 3D model server, and a query interface between the model server and the decision-support tool. The prototype solution is verified using two case studies: on-site assembly of a new bridge on La Palma island, Spain, and refurbishment of existing bridges in Rotterdam, the Netherlands.

Keywords: BIM,GIS,interoperability,decision-support tool,low-disturbance construction,bridge project,urban environment

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Series: convr:2013 (browse)
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Tarek Mahfouz, Amr Kandil

Unstructured Construction Document Classification Model Through Latent Semantic Analysis (LSA)

Abstract: The dynamic nature of the construction industry and the increasing sophistication and complexity of construction projects mandate extensive coordination between different parties and produces massive amounts of documents in diverse formats. Therefore, in an attempt to provide a robust document classification methodology for the construction industry, the current research develops an automated classifier model through Latent semantic Analysis (LSA). The analyses and models developed in this paper focused on two groups of construction documents. The first constitutes of documents with high variation in words like transmittals, correspondences, and meeting minutes. The second relates to documents of low word variations like construction claims and legal documents. The adopted research methodology (1) investigated Latent Semantic Analysis (LSA) algorithms; (2) developed reduced feature spaces; (3) developed two C++ algorithms which process unstructured construction documents into a readable format by the LSA algorithms; (4) developed LSA automated classification models; and (5) tested and validated the developed models. The developed models under the current research attained higher classification accuracy, and better precision and recall than previous researches illustrated in the literature. An overall accuracy of 89% and 92% were attained in the first and second groups of documents addressed respectively. The main finding of this paper represent a step in a line of research that targets developing a coherent and integrated methodology for Knowledge Management (KM) and construction decision support through Machine Learning (ML) techniques. It is conjectured that this research stream would help in relieving the negative consequences associated with lengthy tasks related to analyzing textual documents in the construction industry.

Keywords: Knowledge Management, Latent Semantic analysis, Machine Learning, Document Classification

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Series: w78:2010 (browse)
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Tolman F P, Bohms H M

Electronic business in the building-construction (BC) industry: preparing for the new internet

Abstract: "The paper presents the objectives and initial results of the 5th Framework E-Construct project; curiously enough given the number IST-10303. The aim of E-Construct is to develop, implement, apply and dessiminate a new XML based Communication Technology (CT) for the Building and Construction industry. This Communication Technology will provide the European Building and Construction industry with a powerful but low cost communication infrastructure that: ∑Supports electronic business between Clients, Architects and Engineers, Suppliers (of components, systems, services and resources), Contractors and Subcontractors ∑Is integrated with E-Commerce and Design/Engineering applications, and ∑Supports virtual construction enterprises over the boarders of the individual European member states Meaningful electronic communication in the Building and Construction industry has been the subject of many research and development projects in the past. The result of all these efforts however is practically zero. The problem is that past projects primarily tried to support the Design/Engineering stages. Unfortunately Designers and Engineers are not really powerful players in the industry and certainly not suffiently strong and well organised to produce, implement and enforce a suitable communication standard that also involve other, more powerful, players like Clients, Contractors, Suppliers and Project Managers. E-Construct will primarily be supporting E-Commerce or E-Business type of applications, taking account of the upcoming XML hype, and hopes to include PDT elements on the fly. One of the main targets of E-Construct is to provide E-Commerce over the boarders of the different European memberstates, taking account of the many different national languages and classification and coding systems."

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Full text: content.pdf (204,981 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.commerce (0.102880) class.communication (0.023517) class.collaboration (0.023102)
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Permission to reproduce these documents have been graciously provided by Icelandic Building Research Institute. The assistance of the editor, Mr. Gudni Gudnason, is gratefully appreciated


Tracey Crosbie, John Broderick, Muneeb Dawood, Richard Charlesworth, Vladimir Vukovic, Michael Short and Nashwan Dawood

Integrating Technologies for Demand Response in Blocks of Buildings - A UK Case Study

Abstract: Flexibility in contemporary energy systems is predominantly delivered by fossil fuels. Low carbon energy services are required to avoid dangerous climate change, however, in the electricity sector, energy flows must be balanced instantaneously, and many renewable resources are either variable, uncertain or both. Demand Response (DR) enables consumers to play a significant role in the delivery of flexibility on the electric grid by reducing or shifting their electricity usage during periods of stress or constraint. The value of DR to blocks of buildings depends on the telemetry and control technologies in existing building management systems and the potential revenue sources. To encourage the growth of DR services’ and reap the potential benefits, it is necessary to characterise the economic and environmental benefits of DR. The EU Horizon 2020 co-funded project “Demand Response in Blocks of Buildings” (DR-BOB: www.dr-bob.eu) aims to do just that. This paper describes the technical approach taken by the DR-BOB project at its Teesside University site, focussing on the challenges encountered and the solutions proposed for this city centre campus. It updates previous work (Crosbie et al, 2016) that has described the broader principles and technologies being evaluated at four sites across Europe.

Keywords: Demand Response (DR), Flexibility, Smart Grid, Electricity Networks, Blocks of Buildings

DOI: https://doi.org/10.24928/JC3-2017/0225

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