Building Information Modelling (BIM) and Life Cycle Assessment (LCA) are at the core of construction projects. LCA is one of the key elements of sustainability in the construction projects and an improved LCA process can be achieved through the adoption of BIM. Exploring the characteristics of a BIM-based LCA process from the different perspectives of interoperability and identifying the effects of adopting regionally different EPD databases are significant.  The LCA add-in tools, One Click LCA and Tally, have been selected to identify the differences in the LCA results caused by adopting regionally different Environmental Product Declaration (EPD) databases. To observe the differences in the LCA results, the LCA processes were run through the LCA add-in tools. The input data, the system boundaries and the LCA scope were kept the same for the LCA processes. The LCA results were produced through the integrated LCA add-in tools. The GWP values in manufacturing module, produced by One Click LCA, were embedded into the Solibri model of Akademiska Sjukhuset project. Value level of interoperability in the BIM-based LCA processes was detected and analyzed according to the interaction types that were obtained between the LCA add-in tools and the BIM software. Obstacles in increasing the value level of interoperability to a higher level in today’s BIM-based LCA processes were also focused. Furthermore, the benefits and drawbacks of the BIM-based LCA processes were identified. At last, the differences between BIM-based LCA and traditional LCA process were identified along with future possibilities. It was observed that adopting regionally different EPD databases has significant effects on the LCA results. The semantic detail level of the BIM model and the data extraction quality came to the forefront in identifying the benefits and drawbacks. The interaction types in the studied BIM-based LCA processes were identified as “Collaboration” interaction type. Accordingly, the value level of interoperability in both BIM-based LCA processes was obtained as the high level of value innovation along with efficiency and differentiation. Moreover, the convenience of use, time and resource efficiency and improved accuracy obtained through the BIM-based LCA processes were concluded as some of the major differences from the traditional LCA processes. / BIM (Building Information Modelling) och LCA (Life Cycle Assessment) ligger i kärnan av byggprojekt. LCA är ett nyckelverktyg för hållbarhetsarbete i byggbranschen och en förbättrad LCA-process kan uppnås i och med att tillämpa BIM-verktyg. BIM bjuder på många nyttor däremot detta arbete fokuserar på nyttan som BIM kan ge till LCA-processen. Därmed är forskning på grunden till Bim-baserad LCA-process och datas integrations- och konverteringsförmågan ytterst viktiga för detta arbete. LCA-verktyg One Click LCA och Tally och dess tillägg till CAD-mjukvaror har utvalts för att jämföra resultat vars indata är baserat på olika EPD-databaser (Environmental Product Declaration). För att iaktta skillnader i LCA-resultat, har LCA-processen gjorts med dessa LCA-verkytg. Indata, systemgränser och LCA-definitionsområde var samma för båda LCA-processer. LCA-resultat producerat av båda LCA-verktyg har jämförts utifrån klimatavtrycksperspektiv (Global Warming Potential) för materialframtagandesskede. One Click LCAs GWP-värden har importerats i en Solibri-modell för projektet. Slutligen har LCA-resultat av en Bim-baserad process jämförts med resultat av en klassisk LCA process. Påverkan av geografiskt anpassade EPD-databaser är avgörande för LCA-resultat. Materialframtagandesskede har störst miljöpåverkan i förhållande till andra livsskede. Semantisk detaljnivå av Solibri-modellen är avgörande för identifiering av för- och nackdelar av datas integrations- och konverteringsförmågan. Datainteraktionstyper studerade i BIM-baserade LCA-processer klassas som kollaborativ interaktionstyp. Integrations- och konverteringsförmåga av både BIM-baserade LCA-processer utvärderades på en hög nivå gällande förbättrade resultat, effektivitet och resultatkännslighet. Utöver dessa har BIM-baserade LCA-processer en förbättrad användbarhet och är mer tid- och resurseffektiva, vilka är huvudskillnader från en LCA-process utfört på klassiskt sätt.

The thesis is an outcome of a collaborative work between the author and the renovation team of Modexa AB on project of housing renovation of Tyresö municipality ( Ekbacken ). During this thesis we tried to analyse the ongoing process of renovation in Stockholm and try to provide a solution which helps to improve the data gathering and analysis by production of the BIM model. Further studies to provide further details about the possible outcomes of the BIM model and integration with other software for energy studies, project management and building management had been done.

Im Rahmen dieser Masterarbeit wurden die Arbeitsmethoden der Tragwerksplanung eines Ingenieurbüros im Zusammenhang mit der fortschreitenden Digitalisierung innerhalb der Baubranche untersucht. Konkret sollen die Einflüsse und Möglichkeiten von Building Information Modeling auf interne Prozesse und die damit verbundene Effektivität analysiert werden. Das Ziel der Arbeit ist die Identifikation der Produktivität des bestehenden Workflows und einem anschließenden Vergleich mit dem im Zuge dieser Arbeit entwickelten angepassten Workflow, welcher sich im Optimalfall als effektiver herausstellt. Dieser Vergleich soll an einem Fallbeispiel, dem Neubau eines 16-geschossigen Wohnquartiers in Jena stattfinden. Dafür wird der projektbezogene Bestandsworkflow in die verschiedenen Arbeitsschritte zerlegt, strukturiert und dahingehend systematisch beschrieben. Danach erfolgt in einer ähnlichen Vorgehensweise die Entwicklung eines angepassten Workflows, welcher ebenfalls zunächst vorgestellt wird. Diese beiden Workflows werden abschließend hinsichtlich verschiedener Parameter miteinander verglichen, um eine Bewertung der Effektivität treffen zu können. Dafür werden beide Arbeitsweisen der Tragwerksplanung anhand des gleichen Schemas analysiert. Im Zuge der Analyse des angepassten Workflows erfolgt die projektbezogene Beschreibung, um eine genaue Vergleichbarkeit zu Gewährleisten. Innerhalb der abschließenden Gegenüberstellung konnten signifikante Unterschiede bezüglich der zuvor definierten Parameter festgestellt werden. Die mit der Digitalisierung verbundene BIM-Methode kann die Arbeitsweisen der Tragwerksplanung in einem Ingenieurbüro maßgeblich beeinflussen. Vor dem Hintergrund der begrenzten personellen und finanziellen Ressourcen kleinerer Unternehmen bietet eine Anpassung der Workflows völlig neue Potenziale und kann als Chance angesehen werden, um die eigene Wettbewerbsposition nachhaltig zu stärken.:Abbildungsverzeichnis Abkürzungsverzeichnis 1 Einleitung 1.1 Problemstellung 1.2 Ziele und Struktur der Arbeit 2 Bauvorhaben „Solar-Quartiers“ in Jena 2.1 Projektvorstellung – Fallbeispiel 2.2 Ökonomischer Zielkonflikt zwischen den Beteiligten 3 Erläuterung der Ausgangssituation im Ingenieurbüro Hubert Beyer 4 Erläuterung von BIM-Workflows 4.1 Workflow 1: Projektbezogener Bestandsworkflow 4.1.1 Aufstellung von statischen Berechnungen 4.1.2 Modellorientierte Kommunikation zwischen den Planungsbeteiligten 4.2 Workflow 2: Angepasster projektbezogener Workflow 4.2.1 Aufstellung von statischen Berechnungen 4.2.2 Modellorientierte Kommunikation zwischen den Planungsbeteiligten 5 Analyse der betrachteten BIM-Workflows 5.1 Bestandsworkflow 5.2 Angepasster projektbezogener Workflow 5.3 Vergleich beider Workflows und Analyse der Zielerreichung 5.4 Analyse hinsichtlich des ökonomischen Zielkonfliktes 6 Zusammenfassung und Ausblick Literaturverzeichnis Eidesstattliche Erklärung / As part of this master's thesis, the working methods of structural planning of an engineering office were examined in the context of the progressive digitalization within the construction industry. Specifically, the influences and possibilities of building information modelling on internal processes and the associated effectiveness will be analysed. The aim of the work is to identify the productivity of the existing workflow and then compare it with the adapted workflow developed in the course of this work, which in the optimal case turns out to be more effective. This comparison will take place based on a concrete case example, the new construction of a 16-storey residential quarter in Jena. For this purpose, the project-related inventory workflow was first broken down into the different work steps, structured and described systematically. Afterwards, an adapted workflow was developed using a similar approach, which was also presented initially. Finally, these two workflows should be compared with each other regarding different parameters to be able to make an evaluation regarding effectiveness. For this purpose, both methods of structural design were analysed below based on the same scheme. In the course of the analysis of the adapted workflow, the project-related description is carried out to ensure exact comparability. Within the final comparison, significant differences with respect to the previously defined parameters could be observed. The BIM method associated with digitization can significantly influence the working methods of structural planning in an engineering office. Given the limited human and financial resources of smaller companies, adapting their workflows offers completely new potential and can be seen as an opportunity to sustainably strengthen their competitive position.:Abbildungsverzeichnis Abkürzungsverzeichnis 1 Einleitung 1.1 Problemstellung 1.2 Ziele und Struktur der Arbeit 2 Bauvorhaben „Solar-Quartiers“ in Jena 2.1 Projektvorstellung – Fallbeispiel 2.2 Ökonomischer Zielkonflikt zwischen den Beteiligten 3 Erläuterung der Ausgangssituation im Ingenieurbüro Hubert Beyer 4 Erläuterung von BIM-Workflows 4.1 Workflow 1: Projektbezogener Bestandsworkflow 4.1.1 Aufstellung von statischen Berechnungen 4.1.2 Modellorientierte Kommunikation zwischen den Planungsbeteiligten 4.2 Workflow 2: Angepasster projektbezogener Workflow 4.2.1 Aufstellung von statischen Berechnungen 4.2.2 Modellorientierte Kommunikation zwischen den Planungsbeteiligten 5 Analyse der betrachteten BIM-Workflows 5.1 Bestandsworkflow 5.2 Angepasster projektbezogener Workflow 5.3 Vergleich beider Workflows und Analyse der Zielerreichung 5.4 Analyse hinsichtlich des ökonomischen Zielkonfliktes 6 Zusammenfassung und Ausblick Literaturverzeichnis Eidesstattliche Erklärung

[pt] Atualmente o processo que envolve a construção de um empreendimento é baseado em documentos impressos e desconexos. Há uma tendência global de que um mesmo projeto seja elaborado por diversas empresas e diferentes equipes, porém, as ferramentas computacionais que são utilizadas ainda são as mesmas de décadas atrás. Devido a essa mudança de paradigma, a metodologia conhecida como modelagem da informação da construção, BIM, vem aos poucos ganhando aceitação na área de AEC (Arquitetura, Engenharia e Construção). Motivada por esse processo de transição, essa dissertação tem como objetivo estudar e avaliar algumas das ferramentas computacionais disponíveis no mercado que são utilizadas na implementação da metodologia BIM. Essa avaliação é feita a partir do projeto de um empreendimento real que foi feito utilizando a metodologia tradicional, isto é, documentos 2D independentes. O projeto é modelado em 3D com uma base de dados integrada de acordo com a metodologia BIM. O projeto baseado no modelo 3D é então comparado com o projeto original. Ao término desse estudo são obtidos exemplos reais dos benefícios da modelagem 3D parametrizada. Uma série de deficiências são detectadas nos documentos 2D originais, o que não teria acontecido caso a metodologia BIM fosse usada desde o início do projeto. Além disso, é avaliada a integração entre uma ferramenta de modelagem 3D estrutural (Autodesk Revit Structure 2012) e um software de análise estrutural (Autodesk Robot 2012). Estratégias de integração são testadas e as melhores práticas são descritas em detalhe. Os resultados obtidos sugerem que o uso da metodologia é promissor e sua implementação deve ser seriamente considerada no Brasil. / [en] Currently the process involved in the construction of a facility remains fragmented and dependent on paper-based communication modes. There is a global trend where a single project may be developed by different companies and may involve several teams of specialists. However, the computational tools that are still in use are the same as the ones being used for decades. Due to this paradigm shift, a methodology known as Building Information Modeling, BIM, has been gaining acceptance in the AEC (Architecture, Engineering and Construction) area. Motivated by this process of transition, this thesis aims to study and evaluate some of the computational tools available in the market that are used to implement the BIM methodology. This assessment is made using the design of an actual facility, which is done using the traditional 2D design methodology, i.e., disjoint 2D documents. The project is modeled in 3D with using integrated database according to the BIM methodology. The resulting project is then compared to the original project. At the end of this study, real examples of the benefits of parameterized 3D modeling are obtained. Several inconsistencies in the original design documents are observed, which would not have occurred if the BIM methodology had been used from the beginning of the project. In addition, the integration between a 3D structural modeling tool (Autodesk Revit Structure 2012) and a structural analysis tool (Autodesk Robot 2012) is evaluated. Integration strategies are tested and the best practices are described in detail. The findings of this work suggest the use of the BIM methodology is promising and support its use in Brazil.

Según estudios realizados por el Instituto Nacional de Estadística e Informática – INEI, en la región de Puno, en los censos de 1993 y 2007 existe un crecimiento demográfico emigrante de las zonas rurales a la zona urbana, de la ciudad de Juliaca, gran parte de esta población pertenece al sector socioeconómico “C”; por lo que la demanda de la adquisición de la vivienda propia que sea de bajo costo y además cumpla con las necesidades básica que se incrementaron para dicha población. El objetivo de esta tesis consiste en el desarrollo y utilización de nuevas tecnologías de gestión como es el uso del BIM (Building Information Modeling) y el Lean Construction para el desarrollo de una vivienda unifamiliar en la ciudad de Juliaca, como así también la implementación del uso de materiales y técnicas de construcción novedosos tales como son los prefabricados de concreto; con estas nuevas tendencias de construcción y gestión se procura aminorar los costos y tener la posibilidad de adquirir la vivienda propia para este sector de la población. Dentro de este estudio se establece que los prefabricados a utilizarse en este proceso constructivo de la vivienda serán los paneles tipo Sándwich y las prelosas, las cuales son comparadas con el sistema tradicional que corresponde a un sistema aporticado que es usado mayormente en la ciudad de Juliaca. / According to some statistical studies by Instituto Nacional de Estadística e Informática – INEI, in the region of Puno, performed in the 1993 and 2007 Census; there is increasing of immigrant population who belong to the "C" socioeconomical sector; for which low-cost own housing that meets the requirements of this population has shown a strong growth. The aim of this thesis consists in developing and use of new technologies of management in building, as the usage of BIM (Building Informatio Modeling), and Lean Construction in order to get a single-family house built in the city of Juliaca, as well as the implementation of the use of new materials and new construction techniques, as pre-fabricated concrete construction products; with these new construction and management trends, we seek to lower costs and to get the possibility to obtain own housing for this sector of the population. Pre-fabricated construction products to be used in this process of building of houses will be Sandwich panels and floor plates, which will be compared with the traditional building breached system used mostly used in the city of Juliaca. / Trabajo de investigación

BIM (Building Information Modelling) är idag ett exponentiellt ökande område inom byggindustrin, som inte visar några tecken att sakta ner. I takt med att BIM som koncept och process används i större omfattning både internationellt och nationellt, dyker problem dock oundvikligen upp vid dess implementering. De faktorer som orsakar dessa problem har i detta examensarbete givits termen CSF, ett begrepp som hittills ej använts inom svensk byggindustri. CSF står för Critical Success Factors, vilket innefattar det som i svenska arbeten annars till exempel kallats ”kritiska faktorer”, ”hindrande faktorer”, ”bromsande faktorer” etc. Syftet med detta arbete är därmed att utforska både begreppet CSF och dessa faktorer, samt deras betydelse och relevans. Utifrån tidigare studier, främst utländska, identifierades och introducerades termen CSF samt 14 sådana punkter, vilka gavs en utförligare beskrivning. För att ge dessa 14 punkter en lokal anknytning, intervjuades fem personer i svensk byggindustri med olika erfarenheter av BIM. Det framträdde då klara likheter mellan tidigare diskussion kring de identifierade punkterna och intervjuresultaten. De centrala tankar som kontinuerligt återkom under arbetets gång var värdet av gemensam och delad förståelse, samt vikten av att ta vara på redan etablerad kunskap inom byggindustrin. Det finns i branschen en ofta påtalad klyfta mellan olika generationer, vilket enligt detta arbete ses som det tydligaste exemplet både på en bristande förståelse och ett dåligt utnyttjande av tidigare kunskaper. Vid ett ineffektivt möte mellan olika erfarenheter och kunskaper så leder detta till friktion istället för utveckling, med bortslösade resurser och kunskaper som resultat. Ett stort fokus med detta arbete blev därför att betona den mänskliga aspekten av BIM-implementering snarare än de tekniska delarna. Slutligen konstaterar detta examensarbete att de 14 utvalda punkterna samt användandet av deras övergripande term CSF har ett mervärde både för framtida studier och framtidens implementeringar av BIM, vilket därmed även uppfyller rapporten syfte. / BIM (Building Information Modeling) is an exponentially growing field within the construction industry, with no signs of slowing down. However, as the process continues to spread on both an international and national scale, issues with implementation inevitably arise due to many different factors, in this work identified as CSF (Critical Success Factors). The purpose of this work is therefore to examine these factors, as well as the term CSF itself, with regards to meaning and relevance. Based on previous studies the term CSF, as well as 14 factors, were established. To correlate these internationally described factors to the Swedish market, five interviews featuring people with experience of BIM in Sweden were conducted, after which similarities and patterns could be recognized. The core concepts continually established throughout the work was the value of mutual and shared understanding, as well as the importance of utilizing previously established knowledge within the construction industry. The report concludes that the identified factors as well as the term CSF are both valid and beneficial for future discussions and implementations of BIM

Syftet med den här studien är att förbättra informationsflödet från projektering och produktion in i förvaltningen. Detta för att väcka ett intresse hos förvaltare och för att visa att det finns pengar att spara genom att ta hand om informationen från projekteringen och produktionen. Tidigare studier inom området BIM visar att stor fokus läggs på projektering och produktion men det är ett väldigt litet fokus på förvaltningen när man talar om BIM. Målet är att konkret kunna visa vad informationen är värd och att visa vilken information förvaltare använder och var den finns i byggprocessens skeden före förvaltningen. Rapporten bygger på en litteraturstudie, intervjuer och beräkningar. Förvaltare har blivit tillfrågade vilken information de använder i förvaltningen och sedan har projektör och entreprenör blivit tillfrågad ifall denna information finns att tillgå i projekteringen och produktionen. Värderingen av informationen har sedan gått till på två sätt. Det ena sättet är att bedöma kostnaden av att uppdatera information mot kostnaden att ta fram information på nytt. Det andra sättet är att med hjälp av nyckeltal (kronor per kvadratmeter) och den lista med typ av information som förvaltare använder, som sammanställts från intervjuerna, ta reda på vad information är värd. Det första sättet att värdera visar att det kostar lika mycket att hålla relationsritningar (A) uppdaterade i som minst 18år och i som mest 50år som att ta fram informationen helt på nytt. Nästan samma gäller för BIM-modell med avseende på relationsritningar (A). Fast där är kostnaden för framtagning på nytt lika stor som att hålla den uppdaterad i som minst 22år och i som mest 58år. Det andra sättet att värdera visar att mindre än 25% av den information man kan finna i projekteringen och eller i produktionen är värd cirka 10% av projekteringskostnaden. / The purpose of this study is to improve the flow of information from the design and construction phase into the facility management. This in order to make the facility managers see the advantages with BIM and to show that there is money to be saved by retrieving the information from the design and the construction phase. Earlier studies show that there actually has been quite little research done within BIM in the facility management and that the main focus has been at the design and the construction phase. The aim with the study is to specify the value of the information and to show which information facility managers use and where it can be retrieved from within the earlier phases of the construction process. The report is based on a literature study, interviews and calculations. A number of facility managers have been asked which types of information they use and designers and entrepreneurs have then been asked if these types of information can be found in the design and the construction phase. The information has been valued in two different ways. In one way the information was valued by comparing the cost between updating existing information or recreate the same type of information. The other way of valuing the information was to find out the worth of information by using key figures (SEK per square meter) and the list of information that facility managers use, which was made up from the interviews. The first way of valuing shows that the cost of producing as built drawings (A) in the facility management cost as much as keeping the same type of information updated for at least 18years and as most 50years. Almost the same goes for a BIM-model. Only there the difference is that the cost of producing a BIM-model focused on as built drawings (A) in the facility management cost as much as keeping the same type of information updated for at least 22years and as most 58years. The other way that the information was valued shows that less than 25% of the information that can be found in the design and/or construction phase is worth circa 10% of the projecting fee.

Construction productivity lags behind most industries. In general, the process of construction is carried out in several smaller processes. For the overall construction process to be successful, continuity between these smaller processes must be achieved. This has been the persistent goal of construction productivity improvement for decades now. Waste is generated between the continuing activities by the unpredicted release of work and the arrival of resources. However, in recent decades the construction industry has a great need to improve its productivity, quality and incorporate new technologies to the industry due to increased foreign competition. In the late 1980s, researchers started looking at solving this problem in a more general and structured way based on the philosophy and ideology of lean production. In lean, adopting waste identification/reduction, or meeting the client's needs with minimal resources addresses the performance improvement. With recent developments in the construction industry, introduction of building information modeling (BIM) has had a significant influence on leaner construction. They are both complementary in several important ways. Various studies conducted exhibit that BIM is very crucial in reducing the project cost, site conflicts, project duration, error reduction, better and faster design development, and so on. This brings the question; can BIM be used as a tool for leaner construction? The objective of this thesis is to determine how BIM is helping achieve a leaner construction. More and more companies are adopting BIM as an acceptable waste reduction tool. A comprehensive study of lean theory and BIM was conducted, underscoring ways for BIM to help achieve leaner construction. The research was broadly conducted in three different parts. In the first part, a synthesis is drawn from a literature study to show that BIM helps reduce waste, helps in implementing lean techniques, and achieves lean principles. The second part focuses on the data acquired from a construction company to show that BIM helps reduce project cost, duration and conflicts. The third and the last part focused on getting the perspective view of different professionals in the construction industry on BIM by conducting focus interviews. A comprehensive conclusion was derived based on the findings from the three methods adopted.

Navigation through large and unfamiliar facilities with labyrinths of corridors and rooms is difficult and often results in a person being lost. Additionally, locating a specific utility within a facility is often a tough task. The hypothesis tested in this research is that integrating real-time automated sensing technology and a Building Information Model will provide real time visualization that can assist in localization and navigation of a facility. The scope of this research is facility maintenance management during the Operation and Maintenance (O&M) phase of a facility. The thesis demonstrates how the integration of passive Radio Frequency Identification (RFID) tracking technology and Building Information Modeling (BIM) can assist in facilities maintenance management. The objectives of this research included 1) developing a framework that utilizes the integration of commercially-available RFID and a BIM model; 2) evaluating the framework for real-time resource location tracking within an indoor environment; and 3) developing an algorithm for real-time localization and visualization in a BIM model. A prototype application has been developed that simultaneously connects the RFID readers, a database, and a BIM model. The goal of this system is to have a real-time localization accuracy of 3 meters at 95% confidence. Testing was conducted in laboratory conditions, and the results show that the system error was within the 3 meters goal.

Nya möjligheter inom kommunikation och samarbete är en stor drivkraft gällande utvecklingen av digitala verktyg inom byggbranschen. I dagens byggprojekt har byggherrens projektledare en kritisk roll för att projekt ska genomföras framgångsrikt, och inom denna roll är kommunikation och samarbete två centrala delar. Syftet med detta examensarbete har varit att undersöka hur projektledarens roll på beställarsidan kan effektiviseras med stöd av det digitala verktyget BIM. Fokus har legat på att undersöka hur kommunikation och samarbete mellan projektledaren och andra aktörer inom branschen kan främjas med hjälp av BIM. Detta gjordes genom att besvara följande tre frågeställningar. Hur ser rollen ut för projektledare som representerar en byggherre i dagsläget? Vilka möjligheter medför BIM till en projektledarens arbete och hur påverkar detta kommunikationen och samarbetet med de övriga aktörerna? Vilka hinder och utmaningar finns kring implementeringen av BIM i projektledarens dagliga arbete? Följande examensarbete har genomförts i samarbete med AB Stångåstaden. Semistrukturerade intervjuer kring projektledarens roll har genomförts med projektledare från Stångåstaden och NCC. Ytterligare intervjuer kring BIM har genomförts med olika respondenter med särskild erfarenhet inom BIM. Intervjustudien har kombinerats med en litteraturstudie och deltagande observationer av projektledarrollen på AB Stångåstaden. Resultatet från det genomförda examensarbetet visade att projektledarrollen på beställarsidan är en bred roll med många olika arbetsuppgifter där ledarskap, kommunikation och samarbete står i centrum. Detta visade sig tydligt i intervjustudien och de deltagande observationerna där respondenterna påpekade att deras roll innebär att samordna hela byggprocessen, från tidigt skede till slutförande av projekt, för att säkerställa att byggherren får det som har beställts.  Det genomförda examensarbetet presenterade tre möjligheter med BIM kopplat till kommunikation och samarbete för en projektledare. Den första möjligheten som intervjustudien presenterade var att BIM fungerar som ett bra analysverktyg inom ett projektteam. Projektledarna betonade vikten av att samtliga projektmedlemmar ska kunna relatera till den verkliga byggnaden redan i planeringsskedet för att teamet tillsammans ska kunna ta viktiga beslut längs byggprocessen. Enligt de BIM erfarna möjliggör BIM för just detta med hjälp av 3D visualiseringar och renderingar. Den andra möjligheten som resultatet från intervjustudien presenterade var att BIM möjliggör för en integrerad, strukturerad och effektivare informationshanteringsprocess. Enligt de BIM erfarna sker detta med hjälp av en BIM kravspecifikation vars syfte är att styra upp ett projekt så att informationsflödet blir så effektivt som möjligt. BIM möjliggör dessutom för en integrerad arbetsmiljö med en gemensam informationskälla, som innebär att samtliga projektmedlemmar söker sig till samma ställe för information. Enligt båda respondentgrupperna främjar detta kommunikationen och samarbetet inom projektteamet då projektledaren säkerställer att samtliga parter arbetar med det senaste underlaget, och därmed undviker vanliga missförstånd och tvister som är kopplat till informationshanteringen i ett projekt. Enligt resultatet från intervjuerna var både projektledarnas och de BIM erfarnas uppfattning, genom tidigare erfarenheter, att de två ovannämnda möjligheterna inom kommunikation och samarbete vidare resulterar i en tredje möjlighet i form av ökad kvalitet i de byggnader som projektledaren levererar till byggherren. Trots de potentiella möjligheter som studien presenterade gällande BIM, visade även det genomförda examensarbete att det existerar två stora hinder och utmaningar med implementeringen av BIM. Det första hindret var kopplat till den tekniska aspekten av BIM, främst problematiken kring programvaror och delad information mellan de olika programvarorna. Det andra hindret var kopplat till individernas personliga inställning, främst byggbranschens konservativa inställning och motvilja att förändra ens arbetssätt. / New opportunities within communication and collaboration is a big incentive regarding the development of digital tools in the construction industry. The project manager plays a crucial part in today’s construction projects in order to successfully deliver projects, and communication and collaboration is at the heart of this role. The purpose of this master thesis has been to investigate how the role of the project manager can be streamlined and supported with BIM. The focus of the study has been to investigate how communication and collaboration between the project manager and other participants can be supported with BIM. This has been done by answering the following three question formulations. How does the role of a project manager which represents an owner look like? Which opportunities does BIM provide to a project manager’s work and how does this affect the communication and collaborations with other participants? Which obstacles and challenges exists regarding the implementation of BIM in a project manager’s work?  The following master thesis has been conducted in collaboration with AB Stångåstaden. Semi-structured interviews regarding the role of the project manager were conducted with project managers which represented Stångåstaden and NCC. Additional interviews regarding BIM were conducted with interviewees with experience within BIM. The interview study was combined with a literature study and observations of the project manager role on AB Stångåstaden. The observations and the results from the interview study with the project managers revealed that the role of a project manager which represents an owner is a very broad role where leadership, communication and collaboration is at the heart of the role. This was presented clearly by the interviewed project managers which stated that their role means to coordinate the construction process, from early stages to completion of the projects, in order to ensure that the owner gets what has been ordered. The study presented three opportunities with BIM linked to communication and collaboration for a project manager. The first opportunity which the interview study presented was that BIM is a good tool of analysis within a project team. The project managers emphasized the importance of the project team’s ability to relate to the actual building in the planning stages for the team to make important decisions along the construction process. According to the BIM experts BIM allows for just this with 3D visualizations and renderings. The second opportunity which the interviews presented was that BIM enables an integrated, structured and efficient process of information. According to the BIM experts this is done with a BIM requirement specification which purpose is to streamline the flow of information in a project. In addition, BIM allows for an integrated working environment with a single point of information, which means that all project members get their information from the same place. According to both respondent groups this promotes the communication and collaboration within a project team because the project manager ensures that all participants are working with the latest material, and therefor avoids common misunderstandings and disputes. According to the results from the interviews, both the project managers and the BIM expert’s perception, were that the two above-mentioned possibilities withing communication and collaboration leads to a third opportunity, which is improvements in quality in the buildings that the project manager delivers to the owner. Despite the potential opportunities which the study presented regarding BIM, this master thesis also showed that there exists two big obstacles and challenges with the implementation of BIM. The first challenge was linked to the technical aspect of BIM, mainly the problems surrounding software and shared information between the different software’s. The second challenge was linked to the individual’s personal attitude, mainly the conservative attitude of the construction industry.