Welcome
Digital library of construction informatics
and information technology in civil engineering and construction
 

Works 

Search Results

Facilitated by the SciX project

Hits 21 to 30 of 53

Lavinia Tagliabue, Alice Pasquinelli, Enrico De Angelis, Angelo Ciribini, and Franco Guzzetti

GIS Based Approach for District Energy Retrofit Optioneering

Abstract: Energy is a driver for buildingsÕ refurbishment. The EU energy policies defined some strategies for nearly zero energy buildings ranging from envelope retrofit to the system efficiency enhancement. A GIS based approach is proposed to introduce a district level strategy to enable energy quality in the cities empowered by digital and computational technologies. A case study demonstrates how to assess different retrofit solutions into a sample district. The idea is to use the different data sources and define a common data environment in which data could be used to endorse different analyses on the same knowledge basis. The first step was to understand the level of detail and information required to describe in an accurate and fast way the energy performance related to buildings geometry and age. Two data packages have been tested: retrofit options were computed considering the more reliable data package model. Plausible retrofit scenarios related to the most suitable strategies have been tested to define energy quality to trigger for the district. The energy evaluation have been carried out by standard calculations on GIS-based information. The energy mapping is used to communicate results and possibly outline zones of intervention that can be managed through smart construction sites.

Keywords: BIM/GIS, Energy Retrofit Optioneering, District Energy Refurbishment

DOI: https://doi.org/10.24928/JC3-2017/0269

Full text: content.pdf (4,077,938 bytes) (available to registered users only)

Series: jc3:2017 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Lindfors C T

Value chain management in construction: modelling the process of house building

Abstract: "Construction companies today find it hard to handle the complexity of the house building process, in terms of differentiating between value and non-value adding activities. The research project ‘Value chain management in construction’ includes an investigation of time, cost and quality improvements within one such company. Project success is believed to be linked to the extent to which companies are able to manipulate their supply chain to add value for the customer, whilst at the same time improving their own internal management. In order to be in a position to understand the true extent and complexity of the process, extensive functional models have been created using a computer-based tool. This first pass through the organisational infrastructure has produced detailed ‘as-is’ IDEF0 models. The next steps are to transform these into ‘to-be’ IDEF0 models and then to decompose them into workflow models using the IDEF3 standard. Other tools and techniques were used during this first mapping of the process: analysis and audit of company specific documentation, including the quality assurance system, and interviews with key personnel. The preliminary results of this two and a half year project show that already there is considerable scope for improvement, specifically the research has pinpointed areas where little added value is derived from the process ‘as-is’. Other areas are under examination."

Keywords:

DOI:

Full text: content.pdf (334,177 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.man-man (0.017328) class.impact (0.012269) class.economic (0.008729)
Similar papers:
Sound: read aloud.

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


Liu M Z, Lovett P J, Godwin A N, Fletcher E J

Improving the intelligibility of STEP models for the construction industry

Abstract: "The overall objective of STEP (ISO-10303) is to become a world-wide standard for the representation and exchange of product data. This is to be achieved by the provision of a mechanism capable of describing product data throughout its life-cycle, completely independently of any individual implementation methods. STEP - the Standard for the Exchange of Product Model Data - is the outcome of a large international effort to develop product and process model data standards, which will enable data exchange between diverse computer systems and industrial applications for architecture, engineering and construction. In 1993 the Application Protocol Planning Project for Building and Construction (APPP-BC) identified nested families of models required to represent information relating to the construction industry. Consequently the integrated resource Part 106 Building Construction Core Model, application protocols AP225 Structural Building Elements Using Explicit Shape Representation, AP228 Building Service HVAC, and AP230 Building Structural Frame: Steelwork were developed and included in the Standard. STEP encompasses all aspects of a product and its life-cycle. However the complexity of STEP models is a significant barrier to their wider use. Therefore user-friendly tools which can help users to understand STEP models and their data structure are highly desirable. These will enable STEP-related applications to be developed and the potential for integrated systems using STEP to be achieved in a wide range of industries, including construction. The research presented in this paper involved a thorough investigation of STEP data structures and software tools which can be used to improve the intelligibility of STEP data. The initial investigations provided a basis for describing a range of potential software utilities and produced a broad characterisation of users of STEP. The more detailed work then focused upon application developers and Application Protocol (AP) model developers. The need for visualisation tools to improve the usability of the Standard was recognised, and prototypes produced, contributing to the fulfilment of the needs identified. The concept of using formal mapping techniques to improve the usability of the STEP is also outlined in the paper and is illustrated by its application to AP extracts. The research has identified a structure for a toolkit that can be used by a range of STEP users. The work carried out showed, through the building of prototypes, the feasibility of different elements in the toolkit, and provides a structure for further development"

Keywords:

DOI:

Full text: content.pdf (267,695 bytes) (available to registered users only)

Series: w78:2000 (browse)
Cluster: papers of the same cluster (result of machine made clusters)
Class: class.represent (0.056211) class.processing (0.020547) class.analysis (0.015792)
Similar papers:
Sound: read aloud.

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


M Fahad, N Bus, F Andrieux

Towards Mapping Certification Rules over BIM

Abstract:

Keywords:

DOI:

Full text: content.pdf (496,544 bytes) (available to registered users only)

Series: w78:2016 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


M Hooper, A Ekholm

A Definition of Model Information Content for Strategic BIM Implementation

Abstract: In response to the increased early workflow implied by BIM processes it is important for design consultants to focus on creating and communicating information that is critical for its purpose (Jernigan 2008) - be it model content for 3d Design Coordination at scheme design stage, or Cost Estimation at Design Development stage, or generation of a suitable Record Model for Facilities Management. Today, with many of the technological matters of integrated information management dealt with (perhaps excluding the matter of interoperability), defining the content and status of BIM information deliveries remains both a practical and theoretical problem. A development of a participant-friendly method of articulating BIM content is required to clarify what information is needed when and conversely what information is indeed not needed to implement a BIM process at a particular stage in a construction project. Priority must be placed on the information that is vital for current tasks without getting distracted by desires to populate models with additional or other information or objects masking the absence of key information. Here there is a lack of existing knowledge to solve this practical problem.New BIM tools and new design processes and procedures have led to a certain confusion of what information is needed when for particular BIM uses. This report seeks to explore and enable a method of defining the content of model information deliverables through a review of 2 key primary specific BIM uses: 3d Design Coordination and Early Energy Appraisal through an analysis of practical application.The scope of this study is limited to a review of information flow within residential projects in a Swedish context and looks at two case projects with a view to identifying and establishing a common definition of the key BIM objects and properties necessary for particular tasks. The study follows a case construction project together with an experimental pilot design project with the purpose of extracting and recording what data is needed to carry out parallel and sequential BIM uses with optimised efficiency. By mapping both processes and the precise information needed to successfully carry out tasks, improved productivity can be realised and a greater quality of design output produced.The key deliverable from this study is the BIM-Info Delivery Protocol (IDP) which attempts to align consultant BIM-Info delivery expectations and represents a tangible solution to assist consultant disciplines manage BIM-Info.

Keywords: BIM, Building Information Modelling, information exchange, model information content

DOI:

Full text: content.pdf (435,951 bytes) (available to registered users only)

Series: w78:2011 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Mohsin K. Siddiqui, William J. O’Brien, Ting-Kwei Wang

A Mapping Based Approach To Schedule Integration In Heterogeneous Environments

Abstract:

Keywords:

DOI:

Full text: content.pdf (687,406 bytes) (available to registered users only)

Series: w78:2006 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Nashwan Dawood, Ammar Al-Bazi

Improving the performance and reliability of construction supply chain using simulation: a case study for doorsets manufacturing -DOORSSIM-

Abstract: Successful supply chain management calls for robust supply chain design and evaluation tools. In adition, a set of performance and reliability measurement tools are strongly needed to evaluate the overall supply chain effec-tiveness. Simulation is a widely used technique for modelling manufacturing and other types of complex systems. A literature review reveals that there are only few studies on determining the bottleneck in supply chain and in particular, product components like doorsets. The objective of this ongoing research is to determine the impact of various operating conditions on the performance of the doorsets manufacturing system in order to capture some Key Performance Indicators (KPI’s) and bottlenecks within the production cycle. A case study is implemented in the doorsets manufacturing industry. The ultimate objective of this research is to develop a doorsets simulation model to evaluate the production perform-ance and reliability of the manufacturing processes. Process mapping methodology (IDEF0) has been used as an effective tool for process modelling purposes. A detailed level simulation model of the doorsets manufacturing (DOORSSIM) is developed to answer questions related to effects of the various operating conditions on the productivity performance of the job-shop. This simulation model, provide details about the dynamic of the operations and functioned as a convenient “what if” evaluator of proposed operational changes.

Keywords: process mapping, simulation modelling, job-shop, performance measurement

DOI:

Full text: content.pdf (506,293 bytes) (available to registered users only)

Series: w78:2007 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Nazila Roofigari-Esfahan and Chimay Anumba

Towards a Taxonomy of Cyber-Physical System Applications in Construction

Abstract: Cyber-physical systems (CPS) facilitate the integration of physical processes through offering embedded computation and communication. Through this embedded communication and computation, CPS has the ability to add more intelligence to physical processes and provides effective means for bidirectional coordination between physical entities and their virtual representations. CPS is still considered to be a nascent technology in many industries including construction, and there are many challenges yet to be addressed. However, there is growing interest in this technology and several applications of CPS in improving various construction processes have been proposed in the last few years. This paper classifies current CPS applications presented in the literature for construction projects and accordingly presents a preliminary taxonomy of CPS applications in Construction. To this end, the different components and methods that are required for the application of CPS in construction are characterized and classified and the areas that require further research are identified. It is expected that this taxonomy and its mapping to relevant systems will be highly useful for further development of CPS for improving construction processes.

Keywords: Cyber Physical Systems, Construction, Automation, Computer Integrated Construction, Computer-Aided Design

DOI: https://doi.org/10.24928/JC3-2017/0314

Full text: content.pdf (575,352 bytes) (available to registered users only)

Series: jc3:2017 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


Olga Golovina and Jochen Teizer

BIM4LIFE: GNSS and BIM Data Fusion for Mapping Human-Machine Interaction

Abstract: This paper presents an effective approach towards integrating Real-time Location Sensing (RTLS) and Building Information Modeling (BIM) data for mapping near hit events related to human-machine interaction on construction sites. The study Š under the concept called BIM for lean and injury free environments (BIM4LIFE) Š focuses on key managerial and technological issues in planning safe and productive work environments: (a) the reliance of current performance measurement practices on lagging instead of adapting to leading indicator data and (b) the common unstructured nature and dynamic progress of construction work environments making it difficult to collect data that leads to quality information. Both call for reliable information and communication technology (ICT) in infrastructure and information management processes to advance safety in construction. The data employed are trajectories from Global Navigation Satellite System (GNSS) data loggers, while an as-is building information model and a-priori collected true geometric equipment information are the other main data sources. The initial result of the data fusion process is a heat map that precisely analyses pedestrian worker and equipment interactions. The novelty of this work lies in solving the interface issues from RTLS data to BIM and to automated protective safety equipment modelling. The methods were tested in realistic work settings. The paper concludes with a critical review on the reliability of the methods employed as well as an outlook on possible changes to current work practices.

Keywords: BIM4LIFE, Construction Safety, Remote Sensing, Equipment Operator Visibility, Human-Machine Interaction, Building Information Modelling (BIM)

DOI: https://doi.org/10.24928/JC3-2017/0185

Full text: content.pdf (8,369,421 bytes) (available to registered users only)

Series: jc3:2017 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


R Zeibak-Shini, L Ma, R Sacks

Mapping the Structural Frame of a Damaged Reinforced Concrete Building using As-Damaged Scans and As-Built BIM

Abstract:

Keywords:

DOI:

Full text: content.pdf (558,755 bytes) (available to registered users only)

Series: w78:2015 (browse)
Cluster:
Class:
Similar papers:
Sound: N/A.


For more results click below:

 

hosted by University of Ljubljana



includes

W78




© itc.scix.net 2003
show page 1 show page 2 this is page 3 show page 4 show page 5 show page 6 Home page of this database login Powered by SciX Open Publishing Services 1.002 February 16, 2003