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Al-Hussein, Mohamed; Hammad, Amin; Wang. Hui; Zhang, Cheng

Visualizing Crane Selection and Operation in Virtual Environment

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Full text: content.pdf (459,203 bytes) (available to registered users only)

Series: convr:2006 (browse)
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Chang Hak, Kim; Leen Seok, Kang; Sang Bok, Jee

4D System for Visualizing Schedule Progress of Horizontal Construction Project Including Earthwork

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Full text: content.pdf (408,651 bytes) (available to registered users only)

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Fadi Castronovo, Danielle Oprean, Yifan Liu and John Messner

Application of Immersive Virtual Reality Systems in an Interdisciplinary Design Studio Course

Abstract: The architectural, engineering, and construction (AEC) industry has been witnessing a recent growth of application of visualization and virtual reality technology for design reviews. As our future generations of designers and engineers enter the industry, they will have to possess the ability to leverage such technology. This study aimed at evaluating the experience of students from an interdisciplinary design studio course, in performing internal design reviews with two different types of display systems. The research aimed at understanding which systems the students found most valuable, immersive, and enjoyable when visualizing their models. The first system utilized was a semi-immersive three screen display system, while the second was a single screen large LCD television system. The participants included five groups, with students from different disciplines, such as architecture and architectural engineering. The groups were randomly split into two tracks and took part in an ABBA experimental procedure. The students’ responses were collected through a survey, which was administered after they reviewed their design with each system. Based on the findings, the researchers were able to conclude that the utilized semi-immersive display system promoted the students’ sense of immersion, spatial presence, and enjoyment, over their regular collaboration pod using an LCD screen.

Keywords: Virtual Reality, Design Reviews, Immersive Projection, Engineering Education

DOI: https://doi.org/10.24928/JC3-2017/0006

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Series: jc3:2017 (browse)
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Fischer M, Stone M, Liston K, Kunz1 J, Singhal1 V

Multi-stakeholder collaboration: The CIFE iRoom

Abstract: The CIFE iRoom is a collection of linked software and hardware that allows users to readily structure, display and manipulate the various information used to design and implement a large construction project. The objectives of this research are to define and evaluate new ways for project teams to interact with and visualize project information to facilitate fast and effective decision-making. This paper summarizes the CIFE iRoom infrastructure and gives examples of its use. It shows the importance of separating a model from its view and from its control and of visualizing relationships across different views to conveniently view and compare alternative states of a project model simultaneously.

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Full text: content.pdf (966,473 bytes) (available to registered users only)

Series: w78:2002 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.communication (0.036680) class.man-software (0.023192) class.man-man (0.009241)
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Permission to reproduce these documents have been graciously provided by the Aarhus School of Architecture, Denmark. The assistnace of the editor, Prof. Kristian Agger, is gratefully aprecciated.


Hengwei Wang, Jiarui Lin and Jianping Zhang

Operation-Level 4D Modeling and Visualization for Modular Building Based on Standard Activity Library

Abstract: Modular or prefabricated building plays an important role in lean construction and green building. Building information modeling and 4D bring a new paradigm for data modeling and visualization in the Architecture, Engineering and Construction domain. Meanwhile, lots of time was consumed when modeling and visualizing the dynamic construction process based on 4D. It takes more time to create an operation-level 4D model for technical specification, that always adopted to ensure the quality and safety. Given that modular or prefabricated building projects have lots of similar construction activities, this paper proposed a 4D modeling and visualization approach for modular building, which can persist generalized construction activities and operations in standard activity library and fully utilize them in schedule detailing and visualization. The approach is designed and applied based on previous researches and applications of 4D BIM and has been used in a practical project of modular residential project to illustrate the feasibility of the work and the possibility of future research.

Keywords: 4D Modeling, Operation Level, Building Information Model, Modular Building, Prefabricated Building

DOI: https://doi.org/10.24928/JC3-2017/0287

Full text: content.pdf (2,468,226 bytes) (available to registered users only)

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J Louis, P Dunston, J Martinez

Simulating and Visualizing Construction Operations using Robot Simulators and Discrete Event Simulation

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Full text: content.pdf (143,608 bytes) (available to registered users only)

Series: w78:2014 (browse)
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Jason Lucas, Walid Thabet, Dean Bowman

USING VIRTUAL PROTOTYPING TECHNIQUES FOR IMPLEMENTATION OF A VIRTUAL CONSTRUCTION ENVIRONMENT (VCE)

Abstract: The current-state-of-the-art of Virtual Prototyping (VP) for communicating project data and information is currently limited to the development of interference checking and schedule simulation (4D) tools that rely heavily on BIM models with monolithic CAD objects. While helpful, these interference checking and macro schedule simulation tools only scratch the surface and do not approach the possibilities of generating much needed estimates and schedules expressed in the currency of the individual work tasks that contractors and subcontractors use to bid, construct, measure and track.Virtual Prototyping technologies provide features and capabilities that can be utilized to develop richer and more sophisticated tools to assist project participants to think, plan and conceive construction strategies at the micro level. At the same time, monolithic CAD objects from BIM models, produced during design phase, must be somehow transformed into a more granular and robust form amendable to representing the individual work tasks that comprise estimates and detailed schedules.This paper discusses ongoing research work at Virginia Tech for the development of a 2nd generation Virtual Construction Environment (VCE) framework for micro project planning. The paper addresses the issue of transforming monolithic CAD objects into more granular form to correspond with work tasks. The proposed VCE framework is comprised of graphical and analytical functions for visualizing and manipulating graphical and non-graphical project information necessary to perform different work execution planning scenarios. A prototype implementation is presented to demonstrate concepts proposed.

Keywords: virtual prototyping, macro and micro planning, BIM, CAD, 4D schedule simulation

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Full text: content.pdf (380,670 bytes) (available to registered users only)

Series: w78:2008 (browse)
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Kamat V, Martinez J

3D visualization of construction processes and products

Abstract: "Construction processes range from the relatively simple to the most complex. In the construction industry, complex decisions yielding maximum benefit are an essential component of process design and planning. Simulation modeling and Virtual reality are thus being increasingly used to help decision-makers make economically optimal decisions. Although many advances have been recently made in the area of construction process modeling (e.g. STROBOSCOPE), the Visualization/Animation aspect has mainly focused on the finished product (3D CAD) or on the product as it evolves through construction (4D CAD). Very little attention has been given to visualizing the construction process that leads to the end product, which includes temporary structures and materials, equipment and labor as they create the product. The process visualization/animation tools currently available commercially are restricted to two dimensions (e.g., Proof Animation), inherently lacking in the real world 3D capabilities that are indispensable for the realistic visualization of many construction operations. This paper describes on-going research at Virginia Tech that focuses on the development of a general-purpose, 3D and trace-driven visualization/animation system. This system enables visualization of both the construction process and the resulting product in 3D. The tool enables the easy creation of realistic 3D animations using CAD models from supported data file formats. The core of the work is a simple yet extremely robust set of animation commands, the capability to process sequences of these commands, and the ability to navigate effortlessly in 3-D space. The input to the program is an ASCII text file consisting of sequential command statements. This file can be generated automatically by a variety of simulation software tools such as STROBOSCOPE, which is currently being used to test the system. Due to the flexibility of the command set and the independence of the tool from any particular simulation modeling software, the system has numerous potential applications in fields other than construction, such as in the manufacturing and service industries. Construction simulation model developers will find this tool useful for debugging their model and verifying that analytical models indeed behave correctly."

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Full text: content.pdf (1,018,450 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.processing (0.013438) class.represent (0.013296) class.economic (0.012086)
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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


Lottaz C, Stouffs R, Smith I

Increasing Understanding During Collaboration Through Advanced Representations

Abstract: Efforts to provide support for collaborative work in the AEC industry have resulted in systems that offer various levels of assistance. Although some systems support information transfer in a wide range of formats, they offer little in terms of decision support such as conflict management and negotiation. Other systems provide more decision support but require strict formats for information input and transfer. Nearly all current proposals offer very limited facilities for viewing information. The objective of this paper is to present an environment which has been specifically designed for multiple ways to represent and manipulate information. Several representations, when coupled with appropriate visualization techniques, lead to opportunities for increasing understanding of AEC project characteristics. More specifically, when a numerical constraint solver (SpaceSolver) is integrated within a document-centric collaboration environment (ICC), synergies between information exchange and solution space exploration contribute very positively to the quality of projects. In particular, the ICC environment provides a framework for representing and visualizing information structures that are created during collaboration. Conceptually, an information architecture and visualization techniques to support the virtual AEC enterprise are emphasized. A plug-in architecture allows for the addition of process- specific functionality. The constraint solver SpaceSolver presents a complementary collaborative approach, with strict semantics to support decision making and conflict management. The use of solution spaces during collaborative negotiation avoids premature decisions in the design process, allows detection of conflicting project requirements at early stages of the project, and increases the designers' understanding of hidden relations between design parameters. Together, the ICC environment supports the management of an information space that, when linked to a constraint satisfaction problem, can explain important restrictions and decisions for an effective negotiation. The combination of a flexible framework with more rigid modules, such as constraint solvers, provides a useful compromise and, thus, comprehensive support for a range of AEC projects. Two recently completed construction projects are used to validate the approach

Keywords: collaboration, negotiation, electronic document management, information architecture, information visualization, feedback.

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Full text: http://www.itcon.org/2000/1 (available to registered users only)

Series: itcon:2000 (browse)
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M. M. Nour

Manipulating IFC sub-models in collaborative teamwork environments

Abstract: This paper addresses the problem of workflow management in collaborative teamwork environments, where multidisciplinary actors and software applications are involved. Design versions or variants may represent dif-ferent development stages, partial designs or solution alternatives that need to be integrated together. The paper pre-sents a novel approach to splitting and merging IFC sub-models (partial models) at different degrees of granularity away from the schema oriented approaches. It relies on an instance oriented approach (FIOPE) Flexible Instance Ori-ented Partial Exchange Environment, that enables end usersí manipulation of the IFC model and consequently the con-tribution to the evolution of exchange patterns which can be formalised later to partial exchange schemata (e.g. EX-PRESS-X ISO 10303 P-14). The process of comparing IFC/STEP modelsí tree structure is neither simple nor straight-forward. Consequently, certain algorithms are developed to overcome the complexity of the IFC EXPRESS-ISO P-11 definition of the IFC model. A whole range of software tools for reading, visualizing, processing and writing IFC/STEP models have been developed to achieve the above interoperability aim.

Keywords: IFC, collaborative team work, partial models, interoperability

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Full text: content.pdf (364,390 bytes) (available to registered users only)

Series: w78:2007 (browse)
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