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Liang Y L, Amette L S, Simon S K

Multimedia project control and documentation system

Abstract: Construction experience and knowledge are omnipresent yet difficult to capture at the project site. Many problems and innovative solutions can not be effectively documented because ofthe lack of proper tools to collect and organize the as-built iformation. In claims or disputes, mmy issues involving site conditions cannot be thoroughly analyzed because ofthe lack of information. This as-built information may exist in diverse formats such as text (reports, daily logs), sound (meeting recordings, discussions), and video (site walk through, inspection records). Using multimedia technology, these diverse formats of as-built information can be integrated with project scheduling and control systems to provide an environment not only to control and document project information but also to elicit and study construction experience and knowledge. Such information could also be very valuable for facility operator/maintainers in the later stage of the facility life cycle. This paper presents the design and the operatian of a multimedia project control and documentation system (M73LTROL) under development at the University of Illinois and Construction Engineering and Research Laboratory (CERL). This system allows the users to document and retrieve the as-built project information in the form of text, sound, image and video associated with construction activities. The current version of MULTROL is developed for the FC platform and runs under 'Microsoft WindowsTM operating environment. This system uses graphical user-interface for all operations, creating a user- friendly environment far construction personnel. The retrieval of the as-built information is further assisted by user definable queries to support different needs of construction management.

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Full text: content.pdf (1,897,657 bytes) (available to registered users only)

Series: w78:1993 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-software (0.041560) class.retrieve (0.016578) class.environment (0.015832)
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Permission to reproduce these papers has been graciously provided by the National University of Singapore. The assistance of the editors, particularly Prof. Martin Betts, is gratefully appreciated.


Mittrup I, Smarsly K, Hartmann D, Bettzieche V

An agent-based approach to dam monitoring

Abstract: Software agents - autonomous, mobile and intelligent software programs - provide all the necessary characteristics to innovate and accelerate the development of distributed applications. They represent powerful and robust software technology for implementing distributed collaborative work flows and complex interaction. Applying software agents, the Institute of Computational Engineering, in cooperation with the Ruhrverband (Ruhr River Association) is taking an innovative approach to develop a modern dam monitoring system, which is capable of supporting the collaborative work of experts involved in monitoring. While the conventional computer-based monitoring systems consider the remote monitoring, the presentation and the electronic transfer of measured data, the present agent-based approach is focusing the distributed work flow of data analysis and safety assessment. Consequently, the complete work flow of dam monitoring is mapped onto a multi-agent system: regularly performed tasks (e.g. measuring at the dam) are carried out by task-oriented agents. In addition, the involved human experts are assisted by personal agents, which allow a direct communication with the multiagent system and provide access to specific tasks. Associated with the known advantages of the agent technology, such as robustness and mobility, the introduced concept is a significant enhancement compared to conventional monitoring applications. The present paper gives a short introduction to dam monitoring, outlines the selected design of the agent-based dam monitoring system and provides an insight into the current implementation. It is to be pointed out that the realization is still incomplete and a matter of research.

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Full text: content.pdf (362,274 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.


Mohsen J P, Sabnis G, James M B

Computer based AASHTO pavement design methodology

Abstract: A computer expert system has been developed for design of flexible pavements(FLEXPAVE). The design procedure follows the latest AASHTO Guide for Design ofPavement Structures. The system evaluates required thickness for initial pavement designand the subsequent overlays. The system is an educational and training tool as well as adesign tool. The user is assisted in selecting design inputs by a rule-base expert system. Therules used to determine the recommended values are shown on the screen along with a briefexplanation during the design process. Help screens and various worksheets help the user inselecting design inputs. A sensitivity analysis option allows the user to investigate therequired precision for design inputs. The rules in the expert system are derived from the1993 AASHTO manual and related literature.

Keywords: Pavement Design, Flexible Pavements, Pavement Sensitivity Analysis

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Full text: content.pdf (343,785 bytes) (available to registered users only)

Series: ecce:2001 (browse)
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Pimentao J P, Sousa P A, Jardim-Goncalves R, Steiger-Garcao A

The road model - roadrobot’s experience in applying standards to road construction process’ models

Abstract: "This paper starts by presenting, in short, the architecture developed within European Project ESPRIT III 6660 RoadRobot (Operator Assisted Mobile Road Robot For Heavy Duty Civil Engineering Applications), that aimed towards the full automation of road construction sites. The purpose of the architecture was to lay the basis for the development of a system capable of integrating a set of applications in a common architecture based on the use of a standard (ISO 10303-STEP). The presented architecture has demonstrated the full integration of information and control, starting by loading the information from the selected CAE system (InRoads from Intergraph), down, through the intermediate steps, to the automatic control of a Road Paver from German manufacturer VÖGELE. The main focus of the paper is on the standard-based information models that have been developed to represent project information throughout the road construction cycle. The initial Road Model Kernel created by TNO has been extended to support road specifications that include an update on the specification of asphalt layers for road paving, but also the addition of geological information for the specification of excavation tasks. A set of models has been developed for the maintenance of information regarding planning and scheduling of tasks, which takes into account the project information. A model for resources is used form maintaining resource information for allocation during planning and scheduling. Finally a control model has been developed for control of execution of tasks. The RoadRobot has demonstrated the use of this architecture, and its underlying information models on a demonstration where information downloaded from the CAE system has made its way to a road paver who paved a road segment without on-site human intervention."

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Full text: content.pdf (328,074 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.standards (0.033764) class.represent (0.021030) class.software-machine (0.016240)
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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


Rankin J H, Froese T M, Waugh L M

Exploring the application of case-based reasoning to computer-assisted construction planning

Abstract: Computer-Assisted Construction Planning (CACP) is under development in support of Total Project Systems (TOPS). CACP, as a prototype application, employs a Case-Based Reasoning (CBR) tool, to address the requirements of information retrieval and subsequent reuse for preliminary project planning. The unique aspects of CACP include: 1) a design with respect to an integrated construction management system based on emerging industry information standards (i.e., Industry Alliance for Interoperability), 2) the consideration of quality, organizational, and procurement aspects of planning in addition to time, cost and scope, and 3) the application of CBR to facilitate the re-use of captured planning knowledge. CACP's data structure builds on past efforts of developing data standards within the AEC industry (e.g., ISO STEP and IAI IFCs) and contributes to current efforts with a focus in the construction management domain. With a solid data structure, CACP's planning approach can use organized specialization and aggregation constructs to promote efficient storage and retrieval mechanisms. The CBR tool is then used to guide the user to a past plan that best meets the current project requirements and presents this information for modification to meet all project requirements. The paper briefly describes the data structure and planning approach used and primarily focuses on the application of CBR to achieve a scenario where the re-application of past planning knowledge is possible.

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Full text: content.pdf (78,276 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.031747) class.retrieve (0.024452) class.standards (0.019285)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


S-C Chien, K J Tseng

Simulation-assisted Daylight Performance Analysis in a High-rise Office Building in Singapore

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Full text: content.pdf (1,649,790 bytes) (available to registered users only)

Series: w78:2013 (browse)
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Sousa P, Pimentao J P, Goncalves R, Steigergarcao A

An architecture for heavy duty machine controllers-foreseeing automated road construction environments

Abstract: Considering the architecture designed for the overall incorporation of information technologies (IT) on road construction environments, this paper focuses on the development of automated machine controllers, and on the underlying requisites of machines to use these controllers. Special attention is paid to the modules that compose the machine controller. This work was developed within European Project ESPRIT III 6660 RoadRobot (Operator Assisted Mobile Road Robot For Heavy Duty Civil Engineering Applications).

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Full text: content.pdf (112,392 bytes) (available to registered users only)

Series: w78:1999 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.software-machine (0.028550) class.man-man (0.023877) class.environment (0.021871)
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Permission to reproduce these papers has been graciously provided by the Research Press of the National Research Council of Canada. The support of the editors, particularly Dr. Dana Vanier, is gratefully appreciated.


Suter G, Mahdavi A, Ries R

Outline of a system for sensor-driven, high-resolution building models

Abstract: The continuous monitoring and evaluation of the performance of buildings and products, in particular during construction, operation, and de-commissioning phases is not well established and currently limited to a few safety- and mission-critical systems. We introduce sensor-driven, high-resolution building models (SDBM) that could provide more comprehensive and detailed information on the structure and state of a facility over space and time from pre-construction to demolition. Enabled by sensor technologies that permit the location and identification of building components in 3D space, SDBM would be capable to detect certain changes occurring in a building and automatically construct and update a detailed, structured building model. Such a model could provide services to applications in domains such as building automation and facility management. We outline a general system architecture for SDBM. Furthermore, we describe the features of a system for the simulation-assisted lighting control domain that will serve as a testbed for SDBM.

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Full text: content.pdf (185,027 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.


Zhang S,Teizer J,Perez E,McDonald M

Automated safety-in-design rule-checking for capital facility projects

Abstract: Safety-in-design (SID) reviews are mandatory for capital facility projects because they eliminate hazards before activities in the construction, operation, and maintenance phases take place. Existing SID review processes which many large corporations have in place, however, still rely mainly on manual input and judgment of experienced safety experts. Often very skilled humans make decisions based upon paper-based drawings or three-dimensional visualization models. As such, tasks in safety-in-design review sessions remain to be manual and thus are very much time-consuming, expensive. Furthermore, if not all hazards are detected and mitigated, they can be potentially error-prone. Unsafe design ultimately exposes workers at risk as it provides an unsafe work environment. It can also become very costly if unsafe design is detected outside of the design and construction planning phases of a capital facility project. The objective of this work was to develop a safety code compliance checking technology that does not replace human judgment, but supports human decision making of safety experts, designers, engineers, and field staff. The developed work applies novel safety code compliance checking algorithms on intelligent information models which are prepared during design and construction planning. The initial scope of the developed algorithms is limited to check for safe work access and egress requirements in existing information models. As existing safety rules and best practices are embedded in the developed code compliance checking system, they can be automatically executed on information models which exist for every capital facility project. A case study is presented to illustrate its practical implementation for an off-shore oil platform. Results show that the developed system generates automated reports that list the safety violations and furthermore, along with visual screenshots of the unsafe object in the information model, indicate the process of how these issues can be mitigated based upon established best safety practices. The significance of human-assisted decision-making in SID reviews and its potential to lead to safer designs early in a project is explained.

Keywords: Capital facility projects,design for safety,design reviews,information modeling,rule checking,3D model,safety-in-design

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Full text: content.pdf (898,525 bytes) (available to registered users only)

Series: convr:2013 (browse)
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