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  • 1.
    Andersson, Ronny
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Björk, Bo-Christer
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Ekholm, Anders
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    FoU-program för ICT i bygg- och fastighetssektorn i Finland, Danmark och Norge2008Report (Other academic)
  • 2.
    Bruun, Charlotte
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment. Landstinget i Jönköping.
    Johansson, Johansson
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Value driven ICT for the briefing process2012In: ARCH12   Architecture / Research / Care / Health Perspectives on Nordic Welfare Environments / [ed] Marie Strid & Peter Fröst, 2012, p. 1-22Conference paper (Refereed)
    Abstract [en]

    The way briefing is prepared in conjunction with building projects is crucial to the project's adherence to the client's intentions. It is through the brief that the values expected are documented and transferred. However, international research has for a long time pointed out the briefing stage as a constantly recurring problem area for the construction sector.

     

    The aim of this research is to achieve a more value-driven building process by the use of ICT. The objective of this study is to improve the briefing phase using ICT.

    To reach this objective the following questions will be addressed:

    Q1: What values are defined in the briefing process?

    Q2: What values were created by the use of ICT?

    Q3: How could ICT be developed to further support a value-driven briefing process?

     

    In order to answer the research questions one of the case studies concerning a healthcare building is presented here. The ICT tool Program of Technical Standard (PTS 2012) was used to support the briefing process in the building project studied.

     

    The result of the studies is that using ICT to support the briefing process has many valuable advantages. The use of ICT-support in the briefing process makes the process more efficient. PTS enables capturing of requirements, facilitates information transfer and enables a united vision of the project.  PTS also enables consistency of standard and enables benchmarking and exchange of knowledge by the fact that ten Real Estate organisations of County Councils in Sweden use and develop PTS in collaboration. The ICT-support could be improved by better supporting verification of requirements, prioritization of the client's requirements and discussions about alternative conceptual and possible solutions.

     

    This research is a part of the Eracobuild project “Value Driven Procurement in Building and Real Estate” (www.valpro.eu).

  • 3.
    Davoodi, Anahita
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Aries, Myriam
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    The use of lighting simulation in the evidence-based design process: A case study approach using visual comfort analysis in offices2019In: Building Simulation, ISSN 1996-3599, E-ISSN 1996-8744Article in journal (Refereed)
    Abstract [en]

    The EBD-SIM (evidence-based design, simulation) framework is a conceptual framework developed to integrate the use of lighting simulation in the EBD process to provide a holistic performance evaluation method. A real-time case study, executed in a fully operational office building, is used to demonstrate the framework’s performance. The case study focused on visual comfort analysis. The objective is to demonstrate the applicability of the developed EBD-SIM framework using correlations between current visual comfort metrics and actual human perception as evaluation criteria. The data were collected via simulation for visual comfort analysis and via questionnaires for instantaneous and annual visual comfort perception. The study showed that for user perception, the most crucial factor for visual comfort is the amount of light on a task area, and simple metrics such as Eh-room and Eh-task had a higher correlation with perceived visual comfort than complex performance metrics such as Daylight Autonomy (DA). To improve the design process, the study suggests that, among other things, post-occupancy evaluations (POEs) should be conducted more frequently to obtain better insight into user perception of daylight and subsequently use new evidence to further improve the design of the EBD-SIM model.

  • 4.
    Davoodi, Anahita
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Enger, Johanna
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Comparison of lighting simulation tools with focus on lighting quality2014Conference paper (Refereed)
    Abstract [en]

    By the rise of concerns for global warming, reducing emissions via lowering energy consumption has become a necessity in every sector and the lighting sector is no exception. However, it should not come at the cost of lighting quality and user comfort which is a common practice in today’s lighting design and energy reduction initiatives. The “energy reduction” view should change toward “value driven optimization” in which energy reduction is balanced against lighting quality and user comfort for optimization of the total value of the building. As the use of IT technology grows in lighting design, constant reviews of the software tools are necessary in order to evaluate their performance and ability to design value driven lighting.The main objective of this paper is to compare different lighting simulation tools with respect to their ability to simulate lighting quality both artificial and daylight. The indicators for the comparison are defined based upon findings from another project “criteria for good lighting quality” that is currently being conducted at the same university. First, current numerical metrics for lighting quality are summarized. Then, different simulation tools are evaluated based on a literature study. The outcome of this research summarizes the strength and shortcomings of a number of simulation tools.

  • 5.
    Davoodi, Anahita
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Henricson, Maria
    Jönköping University, School of Health and Welfare, HHJ, Dep. of Nursing Science. Jönköping University, School of Health and Welfare, HHJ. ADULT.
    Aries, Myriam
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    A Conceptual Framework for Integration of Evidence-Based Design with Lighting Simulation Tools2017In: Buildings, ISSN 2075-5309, E-ISSN 2075-5309, Vol. 7, no 4, article id 82Article, review/survey (Refereed)
    Abstract [en]

    The use of lighting simulation tools has been growing over the past years which has improved lighting analysis. While computer simulations have proven to be a viable tool for analyzing lighting in physical environments, they have difficulty in assessing the effects of light on occupant’s perception. Evidence-based design (EBD) is a design method that is gaining traction in building design due to its strength in providing means to assess the effects of built environments on humans. The aim of this study was to develop a conceptual framework for integrating EBD with lighting simulation tools. Based on a literature review, it was investigated how EBD and lighting simulation can be combined to provide a holistic lighting performance evaluation method. The results show that they can mutually benefit from each other. EBD makes it possible to evaluate and/or improve performance metrics by utilizing user feedback. On the other hand, performance metrics can be used for a better description of evidence, and to analyze the effects of lighting with more details. The results also show that EBD can be used to evaluate light simulations to better understand when and how they should be performed. A framework is presented for integration of lighting simulation and EBD

  • 6.
    Davoodi, Anahita
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Laike, Thorbjörn
    Department of Architecture and Built Environment, Environmental Psychology, Lund University, Lund, Sweden.
    Aries, Myriam
    Jönköping University, School of Engineering, JTH, Civil Engineering and Lighting Science.
    Current use of lighting simulation tools in Sweden2019Conference paper (Refereed)
    Abstract [en]

    This paper presents the findings of a web-based survey on the current use of lighting simulation tools in Sweden. The objective was to understand which lighting simulation tools are currently used in Sweden and to understand the design practitioners’ needs for future software development. The results showed that lighting simulation programs are widely used in Sweden. However, the respondents paid less attention to daylight than to artificial light. The respondents’ principal training methods were university courses and self-study. Interior illuminance values, glare indexes, and the daylight factor were the most commonly calculated simulation outputs. “Ease of use” and “accuracy” were identified as the most important factors in the use of the software, while “slowness of simulations process” causes the most dissatisfaction. Dialux was the most popular software program used.

  • 7. Edlund, B
    et al.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Reusing of design calculation documents1996In: Applications of artificial intelligence in structural engineering - III: proceedings of the 3rd workshop on the European Group for Structural Engineering Applications of Artificial Intelligence (EG-SEA-AI) held at Ross Priory, University of Strathclyde, UK, August 12 - 13, 1996, Glasgow: Dep. of Civil Engineering, Univ. of Strathclyde , 1996, p. 67-74Conference paper (Other (popular science, discussion, etc.))
  • 8.
    Granath, Kaj
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Verifiering av krav och värden: Förstudie2015Report (Other academic)
    Abstract [sv]

    Målet med denna förstudie är att inventera dagsläget och framtida möjligheter för verifiering av krav samt analyser av värden genom använda IKT och BIM. Detta ger nya möjligheter för byggherrar att skapa en mer värdedriven byggprocess med målet att optimera byggnadsverkets totala värde för dess ägare, brukare och samhället som helhet.

    Resultaten visar att verifieringar av krav och analyser/simuleringar av värden används i ganska begränsad utsträckning idag. De verifieringar som utförs är fokuersade på grundläggande information om utrymmen, t ex att rätt utrymmen finns med samt att de har ungefär rätt storlek. När det gäller analyser och simuleringar så är det kostnadsberäkningar och energianalyser som används i flest skeden.

    En av de främsta drivande faktorerna i utvecklingen av analyser och simuleringar är hållbarhetsdiskussionen. Användningen av miljöklassificeringssystem har blivit utbrett i byggbranschen. Litteraturstudien visar att det redan idag går att verifiera med hjälp av BIM att ett flerbostadshusprojekt kommer upp till LEED-guld (71 % av teoretiskt maxvärde). I en mer övergripande studie utgick man ifrån 132 hållbarhetsaspekter, och identifierade programstöd som kunde analysera 55 % av dessa aspekter.

    Regelbaserade kontroller av BIM-modeller har redan fått stort praktiskt genomslag, främst för kollisionskontroll. Ju mer utvecklade BIM-modellerna blir desto mer går att kontrollera. En av de mest använda programvarorna som använder denna teknik är Solibri Model Checker. Studier av denna programvara visade att tekniken skulle kunna användas för att automatiskt verifiera de flesta byggherrekrav, om relevant information finns i BIM-modellen.

    För en fortsatt utveckling behövs fortsatt implementering av verifieringar och analyser samt erfarenheter från praktisk användning. Men det behövs också att mer information läggs in i BIM-modellerna samt att brister i interoperabilitet (informationsöverföring) mellan BIM-programvaror byggs bort. Kvaliteten på analyserna är helt beroende av kvaliteten på indata, och att modellen är korrekt uppbyggd.

    Litteraturstudien gav ett antal indikationer på framtida inrikningar: Ett större fokus på tidiga skeden och en mer holistisk syn på hållbarhet är två sådanan tydliga trender. Det finns också en trend mot att verifieringar och analyser bör vara en del av en evidensbaserad produktframtagningsprocess där användarscenarier är en central del och där utvärdering av byggnadens användning samt verifiering och validering av människors upplevelser är en annan.

  • 9.
    Jalilzadehazhari, Elaheh
    et al.
    Linnaeus University, Vaxjo, Department of Forestry and Wood Technology, Vaxjo, Sweden.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, J.
    Department of Forestry and Wood Technology, Linnaeus University, Växjö, Sweden.
    Mahapatra, K.
    Linnaeus University, Vaxjo, Department of Built Environment and Energy Technology, Vaxjo, Sweden.
    Developing a decision-making framework for resolving conflicts when selecting windows and blinds2019In: Architectural Engineering and Design Management, ISSN 1745-2007, E-ISSN 1752-7589, Vol. 15, no 5, p. 357-381Article in journal (Refereed)
    Abstract [en]

    Windows and blinds play a significant role in both shaping energy consumption and enhancing indoor comfort. But there are still difficulties with selecting windows and blinds due to the existence of potential conflicts between visual comfort, thermal comfort, energy consumption and life-cycle cost. A literature review was conducted with the purpose of developing a decision-making framework that resolves the conflicts, and allows selecting a window and blind design based on trade-off between visual comfort, thermal comfort, energy consumption and life-cycle cost. The decision-making framework was developed by integrating non-dominated sorting genetic algorithm-II as an optimization algorithm with analytical hierarchy process as a multi-criteria decision-making method. The optimization algorithm considers different window and blind design variables and analyses multiple designs, while the multi-criteria decision-making method ranks the optimization results and selects a trade-off design. An operating package enabled the decision-making framework to be automated. The operating package was obtained by coupling EnergyPlus as a simulation tool and modeFRONTIER as an integration platform. The decision-making framework was developed to select a trade-off window and blind design through intelligent use of simulation in analysing big-data in built environment, energy and cost sectors. Application of the framework ensures the minimum visual and thermal comfort thresholds with the lowest energy demand and cost. Architects and designers can use the framework during the design or renovation phase of residential and commercial buildings.

  • 10.
    Jalilzadehazhari, Elaheh
    et al.
    Department of Forestry and Wood Technology, Linnaeus University, Växjö, Sweden.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, Jimmy
    Department of Forestry and Wood Technology, Linnaeus University, Växjö, Sweden.
    Mahapatra, Krushna
    Department of Built Environment and Energy Technology, Linnaeus University, Växjö, Sweden.
    Application of analytical hierarchy process for selecting an interior window blind2017In: Architectural Engineering and Design Management, ISSN 1745-2007, E-ISSN 1752-7589, Vol. 13, no 4, p. 308-324Article in journal (Refereed)
    Abstract [en]

    Window blinds have a substantial role in shaping the energy consumption and improving thermal comfort and visual comfort. However, difficulties in selecting a window blind remain, due to existence of potential conflicts between visual, thermal, energy and life cycle cost. To overcome this problem, this study evaluates the performance of interior blinds, including venetian with slat of 0° and 45°, roller and double-pleated blinds with respect to visual, thermal, energy and life cycle cost. Later, the Analytical hierarchy process (AHP) is used for selecting the best blind based on trade-off among the visual, thermal, energy and life cycle cost. In using AHP, visual comfort is determined as most important objective with a weight of 52%. The results show that venetian blind (VB) with slat of 0° drawn 100% is the trade-off blind. Accomplishing the sensitivity analysis on blinds’ global weight shows that VB with slat of 0° drawn 100% remains the trade-off blind until the weight of energy and life cycle cost is below 37% and 57%, respectively, and the weight of visual comfort is above 4%. However, changing thermal comfort weight has no impact on ranking of the blinds. This study shows the capability of AHP in managing the conflicts.

  • 11.
    Jalilzadehazhari, Elaheh
    et al.
    Linnaeus University, Växjö, Sweden.
    Vadiee, Amir
    Mälardalens högskola, Vasteras, Sweden.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Achieving a trade-off construction solution using BIM, an optimization algorithm, and a multi-criteria decision-making method2019In: Buildings, ISSN 2075-5309, E-ISSN 2075-5309, Vol. 9, no 4, p. 1-14, article id 81Article in journal (Refereed)
    Abstract [en]

    The Energy Performance of Building Directive obligated all European countries to reduce the energy requirements of buildings while simultaneously improving indoor environment quality. Any such improvements not only enhance the health of the occupants and their productivity, but also provide further economic benefits at the national level. Accomplishing this task requires a method that allows building professionals to resolve conflicts between visual and thermal comfort, energy demands, and life-cycle costs. To overcome these conflicts, this study exploits the incorporation of building information modelling (BIM), the design of experiments as an optimization algorithm, and the analytical hierarchy process (AHP) into a multi-criteria decision-making method. Any such incorporation can (i) create constructive communication between building professionals, such as architects, engineers, and energy experts; (ii) allow the analysis of the performance of multiple construction solutions with respect to visual and thermal comfort, energy demand, and life-cycle costs; and (iii) help to select a trade-off solution, thereby making a suitable decision. Three types of energy-efficient windows, and five types of ground floors, roofs, and external wall constructions were considered as optimization variables. The incorporation of several methods allowed the analysis of the performance of 375 construction solutions based on a combination of optimization variables, and helped to select a trade-off solution. The results showed the strength of incorporation for analyzing big-data through the intelligent use of BIM and a simulation in the field of the built environment, energy, and costs. However, when applying AHP, the results are strongly contingent on pairwise comparisons. 

  • 12.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Case-Based Structural Design –using weakly structured product and process information2000Doctoral thesis, monograph (Other scientific)
  • 13.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Svensk sammanfattning av projektet ValPro: IKT-stöd för en värdedriven byggprocess2013Report (Other academic)
    Abstract [sv]

    Byggsektorn har mestadels fokuserat på att minska investeringskostnaden. Denna kostnad är väldigt liten i förhållande till kostnaden för förvalting av byggnaden, verksamheten i byggnaden samt värdet av verksamhetens resultat. Detta förhållande indikerar att det finns stora möjligheter att öka ett byggnadsverkets totala värde genom att öka dess värde för verksamhet och förvaltning. Att fokus ändå har legat vid att sänka inversteringskostnaderna beror delvis på att det saknas modeller, metoder och verktyg för en värdebaserad styrning.

    ValPro (Value Driven Procurement in Building and Real Estate) är ett multinationellt projekt med deltagare från Cypern, Danmark, Finland, Frankrike, Norge och Sverige. Syftet med projektet är att utveckla byggsektorns processer till att bli mer värdeskapande genom att just utveckla koncept, metoder och verktyg för mer värdebaserad upphandling.

    Det övergripande målet för den svenska delen av ValPro var att studera IKT-stöd för en värdedriven byggprocess med fokus på tidiga skeden och att föreslå hur dessa kan utvecklas för att bättre stödja en värdedriven process. Tre fallstudier utfördes där användningen av de två, i Sverige, mest använda IKT-stöden för tidiga skeden studerades, Program för teknisk standard (PTS) och dRofus. Fallstudierna visar att användning av IKT-stöd för tidiga skeden ökar värdet av byggnaden för verksamheten samtidigt som byggprocessen blir effektivare. Fallstudierna visade också att IKT-stöd, såsom PTS, kan underlätta samarbete, kommunikation och erfarenhetsutbyte mellan olika parter och på det sättet vara en starkt bidragande orsak till en mer värdeskapande process.

    Vid fallstudierna framgick det att informationsöverföringen mellan förvaltning och byggprocess är viktig men ofta problematisk. Liknande resultat framkom också vid en kartläggning av dagens IKT-stöd i byggprocessen, genomförd av den franska delen av ValPro. Denna kartläggning visade att det finns väldigt lite IKT-stöd som underlättar kunskapsöverföring från förvaltning till tidiga skeden i byggprocessen.

    De svenska fallstudierna visade också att IKT-stöden hade väldigt lite stöd för utvärdering av förslag i tidiga skeden. Under 2000-talet har en mängd forskningsprojekt arbetat med att ta fram modeller för hur värden av en fastighet ska mätas, sk värdemodeller. De flesta fastighetsföretag gör också kontinuerlig utvärdering av företagets fastigheter under produktanvändningen, ofta genom sk nyckeltalsstyrning. Utvärdering av byggnader sker både under förvaltningsskedet, baserat på verksamhetens behov och kundnyttan, samt under tidiga skeden i byggprocessen, för att utvärdera förslag inför ny- eller ombyggnad. Samtidigt saknas det verktyg för att överföra information mellan förvaltning och tidiga skeden. Inom den finska delen av ValPro-projektet testades idén att använda samma mätmodell för värden både i förvaltning och byggprocess. Prototypen Needscape implementerades med detta som utgångspunkt i samarbete med Senatfastigheter i Finland.

    Slutsatsen från ValPro är att användnigen av IKT-stöd för kravställning i tidiga skeden, t ex PTS, tillsammans med IKT-stöd för utvärdering av olika förslag som har sin grund i förvaltningens utvärderingsmodeller, t ex Needscape, skulle ge en mer värdedriven byggprocess där värden för verksamhet och förvaltning får en mer framskjuten position och är styrande genom hela byggprocessen. En sådan utveckling skulle också ge en ny utmaning för utvecklingen av BIM: att vara ett verktyg för att i tidiga skeden kunna verifiera kraven och analysera värden för den slutliga fastigheten.

  • 14.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Bruun, Charlotte
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Value Driven Briefing Process using ICT2013Conference paper (Refereed)
    Abstract [en]

    The way briefing is prepared in conjunction with building projects is crucial to the project's adherence to the client's intentions. It is through the brief that the values expected are documented and transferred. However, international research has for a long time pointed out the briefing stage as a constantly recurring problem area for the construction sector.

    The aim of this research is to achieve a more value-driven building process by the use of ICT. The objective of this study is to improve the briefing phase using ICT.

    To reach this objective the following questions will be addressed:Q1: What values are defined in the briefing process?Q2: What values were created by the use of ICT?Q3: How could ICT be developed to further support a value-driven briefing process?

    To answer these questions three case studies were used. One of the case studies concerning a building for culture and music is presented here. The ICT tool Program of Technical Standard (PTS 2012) was used to support the briefing process in the building project studied. In the case study three questions were answered:

    What functionalities in PTS support the briefing process?How did the use of PTS influence the process? What values were created by the use of PTS?

    The result of the studies shows that using ICT to support the briefing process has many valuable advantages. The use of ICT-support in the briefing process makes the process more efficient. PTS facilitates information transfer and consistency of standard.

  • 15.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Edlund, B
    Analogical reasoning using Design Calculation Documents1997In: Applications of artificial intelligence in structural engineering - IV: proceedings of the 4th Workshop of the European Group for Structural Engineering Applications of Artificial Intelligence (EG-SEA-AI) held at Fellmanni Institute, Lahti, Finland, September 1-2, 1997, Tampere: Tampere University of Technology , 1997, p. 181-188Conference paper (Other (popular science, discussion, etc.))
  • 16.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Edlund, B
    Case-Based Structural Design: reusing design calculation documents1997In: Computers in the practice of building and civil engineering: Worldwide ECCE Symposium, September 3-5, 1997, Lahti, Finland, Helsinki: Association of Finnish Civil Engineers , 1997, p. 122-126Conference paper (Other (popular science, discussion, etc.))
  • 17.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Using Construction Deficiency Reports and Product Models as Systematic Feedback to Avoid Design Errors Caused by Lack of Knowledge2010In: CIB W78 2010: 27th International Conference - Applications of IT in the AEC Industry& Accelerating BIM Research Workshop, 2010Conference paper (Refereed)
    Abstract [en]

    Design errors cause a big part of the defects occurring in building production and maintenance. Earlier research have shown that the most common cause for design errors is lack of knowledge. Product-model based CAD-systems are increasingly used in structural engineering practice and it is well known that these systems reduce the design errors, mostly through better visualization and collision checks. The design errors caused by lack of knowledge are not prevented using product-model based CAD-systems as we do today. This paper describes a case study of design errors where the structural engineer is involved. The aim of the study was to find new ways to prevent design errors using the product-model based technique. The study supports earlier findings that the use of product-model based CAD-systems have a great potential in preventing design errors, especially co-ordination errors. The study also shows that many of the design errors caused by lack of knowledge could be prevented in future projects if the design errors from earlier projects were systematically documented and made available to the structural engineer in the design process. This could prevent as many design errors as is prevented by using product-model based CAD-systems today. The study shows that about 90% of the design errors that could be prevented in this way were situated where two or more elements meet. It was also found in the study that the information needed about the design errors could be retrieved from construction deficiency reports. Based on these findings it is argued that design errors, caused by lack of knowledge, can be prevented in future projects by making the information from the construction deficiency reports available and retrievable for the structural engineer by indexing them using information about the elements meeting where the design error occurred.

  • 18.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Kliger, R.
    Department of Structural Engineering, Chalmers University of Technology, Sweden.
    Knowledge reuse in the design of steel connections using 2D-CAD drawings2007In: Electronic journal of information technology in construction, ISSN 1403-6835, E-ISSN 1400-6529, Vol. 12, p. 1-18Article in journal (Refereed)
    Abstract [en]

    Design knowledge reuse is the most common design method in structural engineering and dominates completely in the design of steel connections. This paper describes a case study and a prototype with the objective of gaining knowledge on how to create computer support for knowledge reuse in the design of steel connections. The case study identified the key characteristics of the design knowledge reuse process in the form of subprocesses. It also showed that the most commonly used documents in these processes are drawings and that these contain most of the information needed for reuse. The prototype was implemented using the Case-Based Design approach. Evaluation of this prototype confirmed the findings of the case study and suggested that information about the geometry and topology of the members connected was sufficient for indexing previous steel connections. The prototype significantly facilitated the process of finding the documentation of recalled previous connections and thus most of the information necessary for reuse. A method of capturing the required information automatically during the process of the designer creating the drawings was implemented and evaluated.

  • 19.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Popova, Mina
    Dept. of Visualization and Modelling, Chalmers University of Technology.
    Case-based Design Using Weakly Structured Information2002In: Electronic journal of information technology in construction, ISSN 1403-6835, E-ISSN 1400-6529, Vol. 7, p. 27-44Article in journal (Refereed)
    Abstract [en]

    Over 50% of the work done by the designer on a day-to-day basis is routine design that consists of reusing past design solutions (Moore, 1993). Despite of this fact, there are no tools that rationally support reuse of such solutions. Case-based design (CBD) has been pointed out as a promising aid to help this situation. In order to be of practical use, however, a case-based design system has to be able to use the information that the designer creates during the design process. The design information that the designer creates is today mostly in the form of weakly structured information, e.g. text documents, calculation documents, and 2D-drawings. This paper proposes an approach that enables capturing and representation of weakly structured information for the purpose of case-based structural design. The representation proposed allows us to apply most of the objectoriented abstract principles also on weakly structured information. It is also shown how the conceptual framework, the dependency structure, and the design process can be captured, represented, and used in CBD. The approach is successfully implemented into a prototype for reuse of computerized design calculation documents.

  • 20.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Popova, S
    Case-Based Design Process Facilitating Collaboration and Information Evolution1998In: Artificial intelligence in structural engineering: information technology for design, collaboration, maintenance, and monitoring, Berlin: Springer , 1998, p. 444-447Conference paper (Other (popular science, discussion, etc.))
  • 21.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Ryd, Nina
    Chalmers.
    Johansson, Bo
    Referat AB.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Byggherre-ICT: Förstudie om ICT-utveckling för byggherrefunktionen2009Report (Other academic)
    Abstract [sv]

    Syftet med denna förstudie är att motivera och formulera hur svenska byggherrar, i egenskap av kravställare och beställare, ska kunna medverka till att påverka och driva utveckling inom ICT till nytta för byggherrefunktionen och därmed stärka byggherrens roll som förändringsagent.

    Förstudien har genomfört en enkätundersökning med svenska byggherrar avseende deras inställning till ICT. Resultatet visar att byggherrarna idag tydligt fokuserar på ICT som ett redskap att hantera problem i produktframställningsprocessen. Det är också inom detta område man ser de största affärsnyttorna. Det här är anmärkningsvärt, eftersom produktframställningen inte primärt är ett byggherreansvar. Resultatet visar också att de svenska byggherrarnas intresse och fokus ligger relativt sent i byggprocessen.

    Förstudien har som jämförelse studerat situationen i våra grannländer avseende ICT genom en nordisk kartläggning. En undersökning visar att Sverige idag är ledande i Norden när det gäller användning av BIM, men vi använder trots det bara en bråkdel av de verktyg som finns till förfogande, inte minst för byggherrens processer. I synnerhet Finland och Norge framstår som mer progressiva inom området, med starka offentliga beställare som driver utvecklingen och sätter standard för branschens samtliga aktörer. I Danmark har man lagstiftat om att projekt över en viss storlek skall ha digital informationshantering i enlighet med byggherrarnas önskemål, de s.k. byggherrekraven.

    I Danmark, Finland och Norge har man på detta vis utvecklat ICT-stöd för byggherrens processer i form av:

    • informationsstrukturer för byggherrens krav, som ger säkrare informationsöverföring
    • generering av lösningsförslag
    • analyser av dessa förslag i tidiga skeden
    • verifieringsmetoder för automatisk verifiering av att ett lösningsförslag uppfyller kraven.

    Sammantaget ger detta en bild av en nordisk byggherreroll, där fokus ligger på tidiga skeden (produktbestämningen) och där byggherrekraven på ett tydligt sätt styr och formar hela byggprocessen och då inklusive valet av ICT-verktyg. Aktuella ICT-verktyg med tillämpning under byggprocessens olika skeden beskrivs i rapportens analysdel.

    Mot bakgrund av enkätundersökningen och den nordiska kartläggningen har förstudien formulerat en ny vision för svensk ICT-användning ur ett byggherreperspektiv. Visionen är att med hjälp av ICT stärka byggherrens nyckelposition som kravställare i förhållande till de andra aktörerna i byggprocessen genom att flytta fokus till byggprocessens tidiga skeden. Visionen innebär således att fokus flyttas från produktframställning till produktbestämning, med en tydlig koppling till de krav som ställs från verksamheten, kunden, brukaren, ägaren och samhället.

  • 22.
    Linderoth, Henrik
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering. Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    The role of bim in preventing design errors2014In: Proceedings 30th Annual ARCOM Conference, 1-3 September 2014, Portsmouth, UK, Association of Researchers in Construction Management / [ed] Raiden, A B and Aboagye-Nimo, E, Association of Researchers in Construction Management (ARCOM), 2014, p. 703-712Conference paper (Refereed)
    Abstract [en]

    Design errors are claimed to account for 26% of the cost of defects, these in turn are stated to encompass 2-9% of production cost for building and constructions. Lack of knowledge and information has been identified as a major reasons for design errors. Recently Building Information Modelling (BIM) has been considered as a mean for reducing design errors. However, limited research has been conducted on the role of BIM as a means for transfer and sharing knowledge in order to reduce design errors. The aim of the paper is to analyse BIM’s role of facilitating knowledge and expertise sharing in order to prevent design errors. The aim is achieved by analysing a case study of design errors in a construction project. By drawing on the concept of boundary object it is confirmed that BIM can serve a mean for preventing design errors by facilitating knowledge and expertise sharing, across discipline, time and space, and professional boundaries. Depending the kind of boundary knowledge and expertise should be shared across, different challenges emerge in organizing the knowledge and expertise sharing.

  • 23.
    Melander, Anders
    et al.
    Jönköping University, Jönköping International Business School, JIBS, ESOL (Entrepreneurship, Strategy, Organization, Leadership). Jönköping University, Jönköping International Business School, JIBS, Center for Family Enterprise and Ownership (CeFEO).
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lennartsson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Elgh, Fredrik
    Jönköping University, School of Engineering, JTH. Research area Product Development - Simulation and Optimization.
    Achtenhagen, Leona
    Jönköping University, Jönköping International Business School, JIBS, Business Administration. Jönköping University, Jönköping International Business School, JIBS, Center for Family Enterprise and Ownership (CeFEO).
    Vimarlund, Vivian
    Jönköping University, Jönköping International Business School, JIBS, Informatics.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Hellborg, Göran
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Entreprenöriell produktframtagning för industriellt byggande2014Report (Other academic)
  • 24. Popova, M
    et al.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Edlund, B
    Lindgren, H
    Case-Based Design Process: Facilitating the use of Product Models for the Purpose of Information Evolution2002In: ITBoF Froskingsseminaium 2000, Stockholm, 2002Conference paper (Other (popular science, discussion, etc.))
  • 25. Popova, M
    et al.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lindgren, H
    An Integrated Platform for Case-based Design2002In: Conference Proceedings - Distributing Knowledge in Building: CIB w78 conference 2002, Aarhus, Denmark., 2002Conference paper (Other (popular science, discussion, etc.))
  • 26. Popova, M
    et al.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lindgren, H
    Case-Based Reasoning and Information Structures in Collaborative Design: The use of product models for information evolution2001In: CIB-W78 International Conference IT in Construction in Africa, South Africa, 2001Conference paper (Other (popular science, discussion, etc.))
  • 27. Popova, M
    et al.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lindgren, H
    Case-based Reasoning in Collaborative Design: The role of product models and information structures2001In: Architectural Information Management, ECAADE, Helsinki, Finland., 2001Conference paper (Other (popular science, discussion, etc.))
1 - 27 of 27
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