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  • 251.
    Dahl, Arvid
    et al.
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Lindström, Charlie
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Mekanisk prestanda hos traditionella träfogar kontra samtida byggbeslag2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Societies demand for environmentally friendly and sustainable construction is ever increasing. One way to meet these new demands on environmentally friendly construction is to use more wood which decreases carbon emissions through the substitution effect. This report aims to research whether traditional joinery techniques entirely executed in wood can replace contemporary joinery techniques in future construction. The goal is to show whether this is possible from a strength standpoint. The research will be limited in that it will strictly seek to study a pillar-beamconnection where the traditional joint researched will be three varying mortise and tenon joints and the contemporary joint is a joist hanger. The joints will be analyzed with calculation and experimentation where the load case aims to produce mainly shear in the joint. The results point towards it being possible to introduce this traditional joint in contemporary construction.

  • 252.
    Dahlin, Alexander
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Hansson, Håkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Fuktmätningsmetoder i VST System: En studie i fuktmätnings metodik gällande VST systems väggmoduler2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 253.
    Danielski, Itai
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Energy variations in apartment buildings due to different shape factors and relative size of common areas2011In: World Renewable Energy Congress 2011, Linköping, Sweden, May 8-11, 2011Conference paper (Refereed)
  • 254.
    Danielski, Itai
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Large variations in specific final energy use in Swedish apartment buildings: Causes and solutions2012In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 49, p. 276-285Article in journal (Refereed)
    Abstract [en]

    This study examines possible causes for variations in specific final energy use in new apartment buildings. The analysis is based on case studies of 22 new apartment buildings that were constructed as part of the ’Stockholm program for environmentally adapted buildings’. The buildings in the study were chosen because they share similar construction characteristics and similar energy systems but display unexpected large variations in specific energy use. Three causes were found to contribute to variations in monitored specific final energy use in the studied apartment buildings: (1) the time interval between the completion of construction work and the actual energy measurements, (2) the shape factor of the building and (3) the relative size of the common area. In addition, the buildings that participated in the Stockholm program failed to achieve the requirements for the specific final energy use, to a large extent, because of expectations based on the simulated values. The simulated specific final energy use predicted by the energy simulations were on average 19% lower than the monitored values, giving the impression that the buildings would fulfill the program’s energy requirements. The reasons for the low simulated values were determined to be large uncertainties in the input data. © 2012 Elsevier B.V. All rights reserved.

  • 255.
    Danielsson, Christoffer
    et al.
    Dalarna University, School of Technology and Business Studies, Construction.
    Hansson, Christopher
    Dalarna University, School of Technology and Business Studies, Construction.
    Planindikatorer som utvärderingsverktyg för hållbar fysisk planering: En konsekvensbedömning på detaljplanenivå2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The urbanization that has occurred in the last century results in an increasing awareness of urban planning and assessment tools are increasingly used to demonstrate that development in the direction of sustainable occurs.

    The purpose of this study is to produce indicators and analyze how the municipality development plans for the station area in Borlänge meet the national-, regional- and local objectives in terms of sustainable urban planning. The method applied in the development of indicators is based on Boverkets and Naturvårdsverkets model that was developed in conjunction with the SAMS-project. Applying this method has resulted in eleven indicators that have been applied to the present situation and the development plans in which the result shows that any major change to the assessment ladder has not occurred.

    As a result of some municipal goals beeing vaguely designed, the difficulty in meeting them increases. This creates a difficulty in applying the assessment tools in the form of indicators that can guide planning in the right direction. The development plans extent is not enough for the municipal goals to be met. The produced planning indicators can be the basis for a dialogue with the municipality in order to sharpen the objectives and generate a better goal achievement.

  • 256.
    Danielsson, Erik
    et al.
    Mälardalen University, Department of Public Technology. Mälardalen University, School of Sustainable Development of Society and Technology.
    Robertsson, Hans
    Mälardalen University, Department of Public Technology. Mälardalen University, School of Sustainable Development of Society and Technology.
    Examensarbete: Prefabricerad produktion med betongelement: En kostnadsutvärdering mellan prefabricerad och platsbyggd produktion2008Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 257.
    Daoud, Abraham
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Andric, Nikola
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Implementering av drönarteknik i byggprocessen2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

     

    The construction industry is undergoing a digitalization, where drone technology is part of the modernization of working methods. Drones are used by an increasing number of companies. Construction companies aim to make cost and time effective solutions while improving the working environment.

    The purpose of this report is to compare how implementation of drone technology affects economy, time and work environment during external inspection of buildings and volume calculations.

    In order to collect relevant information, the survey consisted of literature studies, interviews, questionnaires and case studies in which a drone as a tool has been tested in practice. The results of the survey have demonstrated the benefits of implementing drones as a work tool in terms of economy, time and work environment. Compared to traditional working methods, the results show that the drone is a cheaper and more flexible tool to use, as well as improving the working environment since the drone can be operated from ground level.

    Based on the results of the report, the conclusion has been that profits can be made by implementing drones at construction companies. The recommendation is that the purchase of drones should be regarded as a good investment for construction companies.

  • 258.
    Daoud, Kristina
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Marouf, Arkan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    SPÄNNVIDDER I STOMKONSTRUKTIONERAV LIMTRÄ OCH STÅL2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There are different methods of constructing frame systems. The choice of material has an influence on the final outcome of the frame system. This bachelor’s thesis includes a comparison on frame systems constructed in steel and glulam. Due to an assignment from Wästbygg AB an investigation has been made regarding which of the material is more suitable for an industrial building with an area of 15,000 m2. The building is to be constructed in Stockholm, and frame systems with a span of 45 meter will be compared to each other. The sizing and construction analysis for both frame systems in steel and glulam has been calculated according to Eurocode. Amount of construction parts needed to finish the build is compiled in a list, which is then used to make an appreciated cost summary for the construction. The cost of transportation to the site of the building is included in the cost. Results for the cost of the materials have been made with collaboration with the material suppliers. The cost summary shows that frame system in steel is economically better, with a lower cost of 1 650 000 kr less than glulam. Information about the different materials has been collected by litterateurs, web pages and interviews. The information is then compared to each other and a result by different characteristic qualities has been made. These qualities are then graded depended on how the materials match a sort of quality that is required in a frame system. Some qualities are more important than others, so there is a contention that some qualitys are better for frame system than others, for example if the material has solidity rather than being esthetic. Especially when constructing a large building as this. It is concluded that the choice of material depends on the type of building that is to be constructed.

  • 259.
    Davidov, Viktor
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Construction Engineering.
    iPad på en byggarbetsplats: Det effektiva och papperslösa sättet att arbeta på2011Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Quality assurance of construction projects and create effective ways of working, is intoday's pressed position, major objectives for building contractor companies. This thesis is an attempt to see if it is possible to achieve these goals with the new modern tool iPad.

    The author of this thesis has during the latter half of his one year practice work in Uppsala for the Swedish building construction company NCC Construction Sverige AB, conducted a study on the possibility of using the iPad on an construction site. This has been done with active field studies in which applications have been tested and also the supervisors receptive. The usability of the iPad has always been in focus since it is important that the applications are easy to use and easy to learn.

    The results of the work, as presented in this report, points at opportunities in efficiency if the iPad is introduced and used on construction site. There are many useful applications for the iPad, and with a system that can handle the synchronization between the iPad and the computer, the workflow will be streamlined significantly.

  • 260.
    Dehlin, S.
    et al.
    NCC Construction Sverige AB.
    Olofsson, Thomas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Racz, Tamas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Heikkilä, K.
    Colvo Group Real Estate.
    Practical application of a newly developed automated building energy-analysis software module prototype2012In: eWork and eBusiness in Architecture, Engineering and Construction: Proceedings of the European Conference on Product and Process Modelling 2012 , ECPPM 2012 / [ed] Gudni Gudnason; R J Scherer, Boca Raton: CRC Press, Taylor & Francis Group , 2012, p. 45-49Conference paper (Refereed)
    Abstract [en]

    One key challenge when it comes to developing industrial building concepts for the housing industry is improving the energy performance of buildings, while at the same time ensuring that the end product remains affordable and attractive to customers. This paper summarises the findings from the application of a newly developed prototype for an automated energy-analysis software module in a real-life project.The prototype is used for the energy analysis of the low-energy, multi-family residential P303 concept developed by NCC Construction Sverige AB - a leading construction and development company in the Nordic region. A building concept is based on continuity and repetitions of most of the building components. Most of its characteristics are known and defined beforehand and only a few parameters vary due to the adaptation of the concept, for example, the configuration or site location. In energy performance calculations, the proposed energy-analysis software module prototype processes the known parameters as constants and only varies the unknown parameters. The energy calculations are then carried out by the calculation kernel from the dynamic building simulation software module, VIP Energy, and the result is exported to an Excel spreadsheet where it is presented in a table. This makes it possible, in a practical manner, to execute a larger number of performance analyses in a shorter time, investigating different design alternatives and configurations and thereby facilitating optimisation towards the best possible design solution. The case study presented in this paper simulated energy losses through the building envelope of a real P303 building. The parameters that were varied are the location and orientation of the building and various energy characteristics of windows/glazing.

  • 261.
    Dehlin, Stefan
    et al.
    NCC.
    Heikkilä, Katarina
    NCC.
    Olofsson, Thomas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Schade, Jutta
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Racz, Tamas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Eriksson, Per-Erik
    Luleå University of Technology, Department of Business Administration, Technology and Social Sciences, Innovation and Design.
    Effektive projektering av lågenergihus2011Report (Other academic)
    Abstract [sv]

    Byggbranschen står inför stora miljö- som affärsmässiga utmaningar med krav på att reducera energiförbrukning och miljöpåverkan. Detta projekt syftar till att bidra medkunskap hur energiprojektering kan effektiviseras vid nyproduktion avlågenergibyggnader där det övergripande målet är att stödja ett långsiktigt hållbart och lönsamt byggande. Studien har genomförts i samverkan mellan byggbransch och akademi genom fallstudier och enkätundersökningen.Resultatet visar på behovet och nyttan av att redan i tidigt planeringsskede utreda konsekvensen av olika alternativ av exempelvis byggnadsutformning ochklimatskärmens tekniska prestanda. Det spelar mindre roll vilket energiberäkningsverktyg man använder om resultatet används för att jämföra olika alternativ med varandra.Skillnaderna i krav och institutionella ramverk vad gäller energiprestanda påverkar också projektering av energieffektiva byggnader. En jämförande studie av hur man hanterar energifrågor från krav till färdig lösning mellan Tyskland och Sverige visar på ett behov av vidareutbildning i energifrågor för arkitekter och ingenjörer i Sverige som kommer in tidigt i byggprocessen. Undersökningen och jämförelsen pekar också mot ett behov av en sammanlänkande funktion, här kallad energisamordnare.Energisamordnarens roll är att föra in energikompetens in i projektet, säkerställa att krav och mål formuleras och hanteras samt aktivt delta i projekteringen för att guida utformningen av byggnaden mot en effektiv och låg energiförbrukning.Vi kan konstatera att det är marknadskrafter och engagemang från byggare, beställare och lokala myndigheter snarare än nationella krav som driverenergieffektivisering framåt i Sverige idag. Det kan emellertid leda till en situation där krav på energieffektivitet blir lokalt satta vilket kan leda till svårigheter för utvecklare av olika typer av byggnadssystem för bostäder och lokaler. Därför är det önskvärt att utvecklingen av byggnadstekniken som skett de senaste åren också följs upp av Boverket i form av krav som ligger i framkant snarare än minimikrav för att förhindra att en flora av lokala krav uppstår som kan verka som "handelshinder" för den fortsatta utvecklingen av det industriella byggandet i Sverige.Vi ser också ett tydligt behov för ökad samverkan och integration för att kunna driva energieffektiviseringen framåt men samtidigt också ett tydligt behov av att utveckla upphandlings- och samverkansformer för att möjliggöra detta. Upphandlingen, till exempel, bör utformas så att lämpliga aktörer väljs utifrån mjuka parametrar och involveras tidigt under projekteringsskedet samt ges ekonomiska incitamentkopplade till projektets mål, ekonomi och tidplan.Projektet har också undersökt hur man skall åstadkomma en mer integreradprojekteringsprocess genom att: Skapa en struktur för att samla, uttrycka och klargöra mål och krav ochutveckla dessa mot funktionskrav och tekniska lösningar. Genomföra en modellbaserad projektering som detaljerar tekniska lösningarallteftersom de utvecklas.Införa beslutsstöd för energifrågor i projektutveckling där produktensprestanda successivt jämförs mot funktionskrav med hjälp av alltmerdetaljerade prestandaanalyser.I projektet har också ett nyutvecklat formellt beslutsstöd exemplifierats där fleraalternativa lösningar kan utvärderas mot olika kriterier (MADM) vilka kanorganiseras och viktas hierarkiskt utifrån projektets mål och krav.I projektets har en prototyp, en så kallad energikonfigurator, utvecklats för atteffektivisera produkt och projektutveckling av s.k. konceptbyggande. Användandet har demonstrerats på NCC:s koncept P303 där man optimerat konfigureringen i produkt och projektutveckling efter både subjektiva och objektiva kriterier som tänkas efterlikna ett visst kundsegment. Hundratals alternativa utformningar kan utvärderas på några minuter i jämförelse med dagar och veckor om samma analyser skulle göras för hand med hjälp av energiberäkningsprogram med manuell inmatning av indata.För att effektivisera projekteringen mot ett energieffektivt byggande rekommenderar projektet att:Man tidigt upphandlar och involverar de viktigaste aktörerna så att man tidigtkan inkludera energiaspekter i utformning av koncept. Beställaren aktivt deltar i kravformuleringen och i analys- ochbeslutsprocessen. Dels för att säkerställa val mot uppställda krav och behovoch dels för att tillgodose de praktiska behov som uppstår i och med enintegrerad och modellbaserad projekteringsprocess. Utse en energisamordnare som skall säkerställa att formulerade energikravoch mål hanteras optimalt för att guida utformningen av byggnaden mot eneffektiv och låg energiförbrukning. Använda en modellbaserad projekteringsprocess för utformning, simuleringoch analys av konceptlösningar gentemot energirelaterade aspekter. Energianalyser som görs i tidigt skede används för att jämföra olikaalternativa utformningar. När detaljeringsnivån ökar bör man användadynamiska verktyg och för att beräkna energiförbrukning och inneklimat pårumsnivå. Man bör tidigt inkludera utformning av t ex ventilation ocheventuella maskinrum då de kan ha stor inverkan på energiförbrukningen. Man utför prestandaanalyser av energi och inneklimat innan man fryserdesign av klimatskärm och VVS så att resultatet kan guida konstruktörer ochinstallatörer i den slutliga utformningen av systemhandlingarna. Man i driftfasen utför en mer automatisk och kontinuerlig jämförelse mellansimulerad och verklig energiförbrukning för att bekräfta att byggnadenuppfyller initiala krav samt för att inhämta data och erfarenheter för vidareoptimering eller andra framtida projektFörändring sker i och med att beställaren möjliggör en miljö som initierar ochstödjer en hög grad av samverkan och integration mellan inblandade aktörer, därtyngden på beslutsfattandet flyttas till ett tidigare skede, där rätt kompetenserkan komma in vid rätt tillfälle och där fokus är på slutprodukten och desslivscykel och inte på avskilda åtaganden

  • 262. Dehlin, Stefan
    et al.
    Olofsson, Thomas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    A concurrent product development process using virtual prototypes2008Conference paper (Refereed)
  • 263.
    Dehlin, Stefan
    et al.
    Luleå tekniska universitet.
    Olofsson, Thomas
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    An evaluation model for ICT investments in construction projects2008In: Electronic journal of information technology in construction, ISSN 1403-6835, E-ISSN 1400-6529, Vol. 13, p. 343-361Article in journal (Refereed)
    Abstract [en]

    Even though Information and Communication Technology (ICT) investments in construction projects generally represent minor commitments of project resources by comparison to the full project cost, the value or impact on the profitability of the project are generally not considered. Also, many of the investment decisions are poorly thought through or examined. Investments decision taken during the procurement phase often merely based on intuition and rough estimations of the future costs and risks. Also, many of the traditionally used appraisal approaches have been shown inadequate in anticipating the consequences of such an investment. As a result, the investment is too often assumed to be negative since the benefits are not proper evaluated, included and weighted against the costs and risks the investment is expected to generate. Poor decision-basis does not only affect the actual decision-making in a particular project but also, in the long run, the motivation to innovate and to introduce new ICT tools and working methods into the construction industry. In view of this, a new project-oriented evaluation model is developed for the purpose to provide for a structure and a work routine to be used by a multidisciplinary project team to evaluate the implications of realizing ICT investments in construction projects. Although primarily aimed at establishing future benefits and costs the model may very well be used for follow-ups. The models' application is illustrated using a case study of a construction project using 3D and VR for coordination and evaluation. The results based on interviews and rough estimates on the "safe side" show that benefit of the ICT investment for the case study project was much higher compared with the cost for the project. The shift in focus from costs/benefits for the individual stakeholders to costs/benefits for the project gives a momentum to optimize the use of a new ICT tools in construction. This will surely affect the processes and the contractual environment in the project, since it has to support sharing of information and achieved benefits and the costs of the investment in the project.

  • 264.
    Deleskog, Adam
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Svantorp, Daniel
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Problematik vid användning av väderskydd2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The demand for weather protected scaffolding in building production has increased during recent years. A consequence when using weather protection is that the scaffolding will have to endure bigger loads from wind and snow, which increases the risk of a collapse. During the winter of 2016/2017 two weather protected scaffoldings collapsed by heavy snowfall at the site of KTH (the Royal Institution of Technology) in Stockholm, Sweden. This gave the authors the idea of this report.

    The purpose of the report is to investigate why weather protected scaffoldings collapses by examining the procedure of building and using weather protection in production and also a study of the current regulations regarding the subject. The report was made in cooperation with Skanska and therefore only the company’s intern procedure was studied.

    During the studies of the Swedish Work Environment Authority’s statute book a conclusion was made that the statute book was sufficient enough to prevent accidents to occur. The studies also showed that Skanska’s safety work is well developed with it’s detailed working methods for a safe work environment regarding scaffolding and weather protection. Skanska has made own additions to the statute book in order to improve safety even more.

    The report also shows a need of an investigation made of the Swedish Work Environment Authority when a weather protected scaffolding has collapsed to prevent serious accidents in the future.

  • 265.
    Delic, Damir
    et al.
    Halmstad University, School of Business and Engineering (SET).
    Hadzic, Amer
    Halmstad University, School of Business and Engineering (SET).
    Energibesiktning av förskolor: En fallstudie av Bygg- och installationsteknisk undersökning på förskolor i Falkenberg2011Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 266.
    Delvret, Anton
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Holmqvist, Niclas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Ventilation i förskolor - kostnader och energiprestanda.: Kalkyler och energiberäkningar2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 267.
    Delvret, Anton
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Holmqvist, Niclas
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Ventilation i förskolor-kostnader och energiprestanda: Kalkyler och energiberäkningar2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 268.
    Desgrées du Loû, Antoine
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    Value for Money evaluation in PPPs: difficulties and developments2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Public private partnerships (PPPs) are procurement models used in the provision of public infrastructures and involving private, as opposed to public, finance. The PPP model differs from the traditional public procurement model in this sense and in the unprecedented degree to which the private sector is involved.

    All things being equal, the rationale for choosing a PPP instead of a traditional public procurement model is if it provides a better Value for Money. As a result, a crucial issue to address is to find the key drivers of Value for Money in PPP projects and most importantly, to analyze the relationships between those key drivers and the complex notion of Value for Money.

    This study is based on a large overview of the literature together with contributions of informal interviews and my own opinions. Emphasis is put on the importance of risk management from financiers’ perspective and its consequences on Value for Money. The findings highlight the current problems in the Value for Money assessment that make the analysis hardly reliable. Good and bad practices in Value for Money assessment are discussed and potential solutions and guidance toward more Value for Money are provided. 

  • 269.
    Dobo, Daniel
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Östberg, Dennis
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Masshantering vid hamnbyggnation: Logistik och metoder2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 270.
    Dodik, Josip
    et al.
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    Dodik, Mario
    Linnaeus University, Faculty of Science and Engineering, School of Engineering.
    En jämförelse av 6 aktuella bostadsområden i Sverige med uttalad inriktning på hållbart stadsbyggande2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Under det senaste århundradet har det dykt upp många miljöproblem som har lett till att vi idag måste fokusera mer på en hållbar utveckling av våra städer.

    Allt fler människor väljer att bo i städer och därför är det viktigt för vår framtid att stadsplaneringen blir så hållbar som möjligt.

    Denna rapport beskriver och värderar 6 olika hållbara stadsdelar i Sverige. Dessa har identifierats och värderats utifrån 6 hållbarhetsaspekter som anses vara viktiga.

    Studierna har begränsats till hållbar utveckling inom stadsplanering, de pa- rametrar som tas upp i examensarbetet ”En jämförelse av 6 aktuella bo- stadsområden i Sverige med uttalad inriktning på hållbart stadsbyggande” är; Transport, Social Hållbarhet, Grönskande Utomhusmiljö, Hållbara Transporter, Hållbart Energisystem, Miljöanpassade Bostäder & Lokaler, Hållbart Vatten & Avlopp och Hållbar Återvinning. 

  • 271.
    Dodoch, Antonio
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Alaiya, Mayowa
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Minskning av byggfel genom väl utförda arbetsberedningar: Optimering av arbetsberedningar i syfte att motverka byggfel2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sammanfattning

     

    Oönskade tilläggs- och ändringsarbeten uppkommer i byggproduktionen som medför ekonomiska påföljder och förseningar i tidplanen. Dessa arbeten går under det gemensamma namnet ÄTA-arbeten (Ändrings-, tilläggs- och avgående arbeten) och orsakas av diverse anledningar. En av orsakerna till uppkomsten av de oönskade ÄTA-arbetena är svårigheterna med att framställa utförliga arbetsberedningar.

     

    Rapporten syftar till att redogöra hur effektivare arbetsberedningar kan förhindra uppkomsten av oönskade ÄTA-arbeten samt hur arbetsberedningarna kan förbättras. Under arbetets gång har svar till formulerade frågeställningar frambringats genom enkätundersökningar och intervjuer och diskussioner kring ämnet har förts utifrån det egna medverkandet i ett antal arbetsberedningar. Rapporten avgränsas till platsbesök på två projekt; Projekt Driftområde Arlanda samt och Kontorsfastighet Hus 4 Nya Danderyds Centrum.

     

    Analyserna och slutsatserna presenteras i rapportens avslutande delar och ger en uppfattning på hur arbetsberedningar står i relation till uppkomsten av oönskade ÄTA-arbeten. Med väl utförda arbetsberedningar avser man att skapa bästa möjliga förutsättningar för ett arbetsmoment och på så sätt minimerar risken för uppkomsten av oönskade ÄTA-arbeten. Styrning, planering, hantering av tidsbrist, resurstillgänglighet och engagemang är faktorer som i stor utsträckning styr huruvida bra eller dåligt en arbetsberedning blir. Dessa ämnen kommer att behandlas mer ingående i rapporten.

     

    Rekommendationer kring hur arbetsberedningar kan förbättras och effektiviseras utifrån olika aspekter gällande arbetsplatsens utformning, engagemanget hos arbetarna, erfarenhetsåterföring samt dokumentationen av arbetsberedningarna redovisas i rapporten.

     

  • 272.
    Dodoo, Ambrose
    et al.
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Gustavsson, Leif
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Sathre, Roger
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Carbon implications of end-of-life management of building materials2009In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 53, no 5, p. 276-286Article in journal (Refereed)
    Abstract [en]

    In this study we investigate the effects of post-use material management on the life cycle carbon balance of buildings, and compare the carbon balance of a concrete-frame building to that of a wood-frame building. The demolished concrete is either landfilled, or is crushed into aggregate followed by exposure to air for periods ranging from 4 months to 30 years to increase carbonation uptake of CO2. The demolished wood is assumed to be used for energy to replace fossil fuels. We calculate the carbon flows associated with fossil fuel used for material production, calcination emission from cement manufacture, carbonation of concrete during and after its service life, substitution of fossil fuels by recovered wood residues, recycling of steel, and fossil fuel used for post-use material management. We find that carbonation of crushed concrete results in significant uptake of CO2. However, the CO2 emission from fossil fuel used to crush the concrete significantly reduces the carbon benefits obtained from the increased carbonation due to crushing. Stockpiling crushed concrete for a longer time will increase the carbonation uptake, but may not be practical due to space constraints. Overall, the effect of carbonation of post-use concrete is small. The post-use energy recovery of wood and the recycling of reinforcing steel both give higher carbon benefit than the post-use carbonation. We conclude that carbonation of concrete in the post-use phase does not affect the validity of earlier studies reporting that wood-frame buildings have substantially lower carbon emission than concrete-frame buildings.

  • 273.
    Dodoo, Ambrose
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Gustavsson, Leif
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Sathre, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Carbon implications of end-of-life management of building materials2009In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 53, no 5, p. 276-286Article in journal (Refereed)
    Abstract [en]

    In this study we investigate the effects of post-use material management on the life cycle carbon balance of buildings, and compare the carbon balance of a concrete-frame building to that of a wood-frame building. The demolished concrete is either landfilled, or is crushed into aggregate followed by exposure to air for periods ranging from 4 months to 30 years to increase carbonation uptake of CO2. The demolished wood is assumed to be used for energy to replace fossil fuels. We calculate the carbon flows associated with fossil fuel used for material production, calcination emission from cement manufacture, carbonation of concrete during and after its service life, substitution of fossil fuels by recovered wood residues, recycling of steel, and fossil fuel used for post-use material management. We find that carbonation of crushed concrete results in significant uptake of CO2. However, the CO2 emission from fossil fuel used to crush the concrete significantly reduces the carbon benefits obtained from the increased carbonation due to crushing. Stockpiling crushed concrete for a longer time will increase the carbonation uptake, but may not be practical due to space constraints. Overall, the effect of carbonation of post-use concrete is small. The post-use energy recovery of wood and the recycling of reinforcing steel both give higher carbon benefit than the post-use carbonation. We conclude that carbonation of concrete in the post-use phase does not affect the validity of earlier studies reporting that wood-frame buildings have substantially lower carbon emission than concrete-frame buildings.

  • 274.
    Dodoo, Ambrose
    et al.
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Gustavsson, Leif
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Sathre, Roger
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Energy implications of end-of-life options for building materials2008In: First International Conference on Building Energy and Environment, Proceedings Vols 1-3, Dalian, China: Dalian University Technology Press , 2008, p. 2025-2032Conference paper (Refereed)
    Abstract [en]

    The energy flows associated with the materials comprising a building can be a significant part of the total energy used in a building's life cycle. Buildings have finite life spans, and the materials from demolished buildings can be either a burden that must be disposed, or a resource that can be used. In this paper we analyse the end-of-life energy impacts of concrete, steel and wood. End-of-life options considered include reuse; recycling; downcycling; energy recovery; and disposal in landfill. We follow the life cycles of the building materials from the acquisition of natural resources through to the end of the product's life cycle. We identify possibilities and constraints for integrating more effective end-of-life material processing options into existing industrial systems.

  • 275.
    Dodoo, Ambrose
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Gustavsson, Leif
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Sathre, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Energy implications of end-of-life options for building materials2008In: FIRST INTERNATIONAL CONFERENCE ON BUILDING ENERGY AND ENIVRONMENT, PROCEEDINGS VOLS 1-3, Dalian, China: Dalian University Technology Press , 2008, p. 2025-2032Conference paper (Refereed)
    Abstract [en]

    The energy flows associated with the materials comprising a building can be a significant part of the total energy used in a building's life cycle. Buildings have finite life spans, and the materials from demolished buildings can be either a burden that must be disposed, or a resource that can be used. In this paper we analyse the end-of-life energy impacts of concrete, steel and wood. End-of-life options considered include reuse; recycling; downcycling; energy recovery; and disposal in landfill. We follow the life cycles of the building materials from the acquisition of natural resources through to the end of the product's life cycle. We identify possibilities and constraints for integrating more effective end-of-life material processing options into existing industrial systems.

  • 276.
    Dodoo, Ambrose
    et al.
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Gustavsson, Leif
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Sathre, Roger
    Mittuniversitetet, Institutionen för teknik och hållbar utveckling.
    Life cycle primary energy implication of retrofitting a wood-framed apartment building to passive house standard2010In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 54, no 12, p. 1152-1160Article in journal (Refereed)
    Abstract [en]

    Here we analyze the life cycle primary energy implication of retrofitting a four-storey wood-frame apartment building to the energy use of a passive house. The initial building has an annual final energy use of 110 kWh/m(2) for space and tap water heating. We model improved thermal envelope insulation, ventilation heat recovery, and efficient hot water taps. We follow the building life cycle to analyze the primary energy reduction achieved by the retrofitting, considering different energy supply systems. Significantly greater life cycle primary energy reduction is achieved when an electric resistance heated building is retrofitted than when a district heated building is retrofitted. The primary energy use for material production increases when the operating energy is reduced but this increase is more than offset by greater primary energy reduction during the operation phase of the building, resulting in significant life cycle primary energy savings. Still, the type of heat supply system has greater impact on primary energy use than the final heat reduction measures.

  • 277.
    Dodoo, Ambrose
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Gustavsson, Leif
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Sathre, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Engineering and Sustainable Development.
    Life cycle primary energy implication of retrofitting a wood-framed apartment building to passive house standard2010In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 54, no 12, p. 1152-1160Article in journal (Refereed)
    Abstract [en]

    Here we analyze the life cycle primary energy implication of retrofitting a four-storey wood-frame apartment building to the energy use of a passive house. The initial building has an annual final energy use of 110 kWh/m(2) for space and tap water heating. We model improved thermal envelope insulation, ventilation heat recovery, and efficient hot water taps. We follow the building life cycle to analyze the primary energy reduction achieved by the retrofitting, considering different energy supply systems. Significantly greater life cycle primary energy reduction is achieved when an electric resistance heated building is retrofitted than when a district heated building is retrofitted. The primary energy use for material production increases when the operating energy is reduced but this increase is more than offset by greater primary energy reduction during the operation phase of the building, resulting in significant life cycle primary energy savings. Still, the type of heat supply system has greater impact on primary energy use than the final heat reduction measures.

  • 278.
    Dodoo, Ambrose
    et al.
    Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.
    Gustavsson, Leif
    Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.
    Sathre, Roger
    Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.
    Lifecycle carbon implications of conventional and low-energy multi-storey timber building systems2014In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 82, p. 194-210Article in journal (Refereed)
    Abstract [en]

    A consequential-based lifecycle approach is used here to explore the carbon implications of conventional and low-energy versions of three timber multi-storey building systems. The building systems are made of massive wood using cross laminated timber (CLT) elements; beam-and-column using glulam and laminated veneer lumber (LVL) elements; and prefabricated modules using light-frame volume elements. The analysis encompasses the entire resource chains during the lifecycle of the buildings, and tracks the flows of carbon from fossil energy, industrial process reactions, changes in carbon stocks in materials, and potential avoided fossil emissions from substitution of fossil energy by woody residues. The results show that the low-energy version of the CLT building gives the lowest lifecycle carbon emission while the conventional version of the beam-and-column building gives the highest lifecycle emission. Compared to the conventional designs, the low-energy designs reduce the total carbon emissions (excluding from tap water heating and household and facility electricity) by 9%, 8% and 9% for the CLT, beam-and-column and modular systems, respectively, for a 50-year lifespan located in Växjö. The relative significance of the construction materials to the fossil carbon emission varies for the different energy-efficiency levels of the buildings, with insulation dominating for the low-energy houses and plasterboard dominating for the conventional houses.

  • 279.
    Dorn, Michael
    et al.
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Kozłowski, Marcin
    Silesian University of Technology, Poland.
    Serrano, Erik
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Enquist, Bertil
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Development of large-scale load-bearing timber-glass structural elements2014In: WCTE 2014 - World Conference on Timber Engineering: Proceedings, 2014Conference paper (Refereed)
    Abstract [en]

    The building industry demands ever more effective structural elements with a multitude of requirements at the same time. There is increasing interest for load-bearing glass elements which can be deployed in timber structures, e.g. in the outer façade or as column or beam elements within the building. In an on-going research project, the materials glass, timber and the adhesive combining the former have to be selected to fit each other but also suit the application. The mechanical properties are studied individually as well as in combined small-scale specimens experimentally. Furthermore,large-scale tests on beams and shear walls are performed. This is accompanied by numerical analysis to study a wide range of dimensions and variations as well as specific design situations. The final output of the project will be prototypes to beused in showcase projects.

  • 280.
    Draganovic, Almir
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.
    Bleeding and Filtration of Cement-Based Grout2009Doctoral thesis, monograph (Other academic)
    Abstract [en]

    Grouting is a common method of sealing rock around tunnels to reduce or stop water inflow. Successful grouting significantly minimizes the maintenance cost and safety of the tunnel. Some questions about bleeding and penetrability of the grouts have to be examined more closely to carry out a successful grouting.

    Bleeding of cement-based grout is a complex problem. Measuring methods used today originate from the measuring of the bleeding of cement pastes used in ordinary building industry. Whether bleeding measured with a standard method is relevant for bleeding in small fractures in rocks is one of the main questions in this study. The aim of the study is to illustrate what really happens with a grout during bleeding and which factors and processes influence it. In this way relevant measuring methods can be developed as well as the knowledge regarding interpretation of the measured results. The study has shown the most important factors which governs bleeding in cement-based grout. It has also shown that the results measured with standard methods are not relevant for bleeding of grout in rock joints and that voids in the joints caused by bleeding could be refilled during grouting itself.

    An important aspect of grouting is penetration of the grout. The penetration is defined as the length of how far grout penetrates in the rock through fractures from a bore hole. Filtration of the grout is a result of a plug building at fracture constrictions which reduces the penetrability of the grout. This is the other important issue discussed in the study which examines the question whether this can be measured by some measuring method and which factors and processes influence penetrability and filtration. A hypothesis of how the factors w/c ratio, pressure and relative constriction influence penetrability are presented and tested by special constructed measuring equipment. The results obtained by this measuring equipment are compared with the results measured with a penetrability meter.

  • 281.
    Du, Guangli
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Safi, Mohammed
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. ÅF Infrastructure AB, Sweden.
    Pettersson, Lars
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges. Skanska Sverige AB, Sweden.
    Karoumi, Raid
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
    Life cycle assessment as a decision support tool for bridge procurement: environmental impact comparison among five bridge designs2014In: The International Journal of Life Cycle Assessment, ISSN 0948-3349, E-ISSN 1614-7502, Vol. 19, no 12, p. 1948-1964Article in journal (Refereed)
    Abstract [en]

    The conventional decision-making for bridges is mostly focusing on technical, economical, and safety perspectives. Nowadays, the society devotes an ever-increased effort to the construction sector regarding their environmental performance. However, considering the complexity of the environmental problems and the diverse character of bridges, the related research for bridge as a whole system is very rare. Most existing studies were only conducted for a single indicator, part of the structure components, or a specific life stage. Life Cycle Assessment (LCA) is an internationally standardized method for quantifying the environmental impact of a product, asset, or service throughout its whole life cycle. However, in the construction sector, LCA is usually applied in the procurement of buildings, but not bridges as yet. This paper presents a comprehensive LCA framework for road bridges, complied with LCA ReCiPe (H) methodology. The framework enables identification of the key structural components and life cycle stages of bridges, followed by aggregation of the environmental impacts into monetary values. The utility of the framework is illustrated by a practical case study comparing five designs for the Karlsnas Bridge in Sweden, which is currently under construction. This paper comprehensively analyzed 20 types of environmental indicators among five proposed bridge designs, which remedies the absence of full spectrum of environmental indicators in the current state of the art. The results show that the monetary weighting system and uncertainties in key variables such as the steel recycling rate and cement content may highly affect the LCA outcome. The materials, structural elements, and overall designs also have varying influences in different impact categories. The result can be largely affected by the system boundaries, surrounding environment, input uncertainties, considered impact indicators, and the weighting systems applied; thus, no general conclusions can be drawn without specifying such issues. Robustly evaluating and ranking the environmental impact of various bridge designs is far from straightforward. This paper is an important attempt to evaluate various designs from full dimensions. The results show that the indicators and weighting systems must be clearly specified to be applicable in a transparent procurement. This paper provides vital knowledge guiding the decision maker to select the most LCA-feasible proposal and mitigate the environmental burden in the early stage.

  • 282.
    Duberg, Roland
    et al.
    Luleå University of Technology.
    Borgbrant, Jan
    Utvärderingsrapport CDU - Centrum för forskning och utbildning i drift och underhåll av infrastruktur2002Report (Other academic)
    Abstract [sv]

    Sammanfattning och slutsatser De centrala frågeställningarna som utgör utgångspunkt för utvärderingen är redovisade i avsnittet "Centrala frågeställningar" i denna rapport. Frågeställningarna kan kortfattat rubriceras som följer: Styrformens betydelse för berörda aktörer Forskningens resultat och nytta Jubileumsprofessurens betydelse för CDU:s framtid CDU:s påverkan av samarbetet mellan huvudintressenterna Frågor som har konsekvenser för aktörerna på kort och lång sikt

  • 283.
    Dudenhöfer, Dennis
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    En kostnadsjämförelse mellan hyrd och köpt utrustning2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In the swedish construction business, most contractors rent their equipment from renting companies. There are different reasons for that, the most significant reason being that companies do not want to tie up capital. Rekab Entreprenad AB is one of those companies. Andreas Nilsson, project manager at Rekab, now wants to investigate which is more profitable, buying own equipment or renting. The purpose of this study perform a case study for Rekab Entreprenad AB in Umeå. Using websites of companies that are partners with Rekab, prices for buying different equipment were compared to rent prices. Different factors like rent for storage, transportation and insurance were also taken into consideration. Also suggestions were given for more environment-friendly equipment handling. The economic result is divided into two parts: the individual cost for every piece of equipment and general costs. Examples for general cost are: rent for storage, insurance, transportation and other factors that are not dependent on quantity of equipment. Results for individual cost of every equipment varies, but generally the cost for buying machines is one fourth of the cost for renting. The . Also the general cost is to be added to that number. A factor to take into account is storage rent, which is already being paid by Rekab, and therefore is not an extra cost when buying own equipment. In conclusion, the profitability in buying eqipment depends on the equipments quantity. In Rekabs case, according to this study, buying equipment is much more economically profitable than renting equipment. A profitability as high as the study suggests must be questioned by the fact that Rekab is still renting equipment. That question can be explained with hidden costs, which often are hard to put a pricetag on. A discussion about these hidden costs is presented in the discussion section.

  • 284.
    Dusseau, Foster
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies. ABE department; exchange student from ESTP Paris.
    Oslo- Stockholm High Speed Railway: An up in the air project2012Independent thesis Advanced level (degree of Master (Two Years)), 30 credits / 45 HE creditsStudent thesis
    Abstract [en]

    The objective of this paper is to shed a light on a High-speed Railway (HSR) study project in the corridor Stockholm-Oslo, and investigate the global context in which it has grown. Priority Project 12 (PP12), commonly named “The Nordic Triangle”, is a project within the Trans-European Transport Network (TEN-T) program, a European program aiming at establishing an efficient transport network, for competitiveness and employment in Europe. The Nordic Triangle aims at linking the Nordic countries, Sweden, Norway, Denmark and Finland and their capitals to each other and improving passenger and freight transport, both rail and road, between the central Europe, the Baltic countries and Russia. The cornerstone of this program in Sweden is the development of three main axes: Stockholm–Katrineholm–Laxa–Swedish–Norwegian boarder; Katrineholm/Jarna–Norrköping–Malmö; and Malmö–Gothenburg–Swedish–Norwegian border. Of course, this extension to the Swedish-Norwegian boarder targets to reach Oslo, the Norwegian capital.

    What was expected in theory mismatches with the current situation and the future expectations on this project. It proves that Sweden, throughout the PP12, has concentrated its railway upgrades to the two other axes and has made few efforts to improve the Oslo–Stockholm line. Political decisions in terms of railway network development are more focused on the North-South axes, which represent an undeniable opening to Central Europe.

    At the same time the Norwegian Ministry of Transport has launched in 2010 an overall High Speed Rail Assessment to study different route alternatives for the creation of a first new HSR system. Among them is the Stockholm-Oslo route. It is curious to see that Norway focuses on a project that is not on the agenda of the European Commission and it is important to try to understand why and to know if such a project is economically viable.

    The conclusion is that this current implementation reflects the Swedish willingness to develop its railway network, and especially its high-speed network, to the South, which embodies a front door to Central Europe. Thus, since the beginning of the development of the Nordic Triangle, it seems probable Sweden had in mind not to upgrade all the line to Oslo, but only half the way.

    As regards the viability of the HSR line, it could not be economically viable because the revenue generated could not offset these former costs. An insufficient demand would be the main problem. Investing in a HSR on this corridor is certainly not the most reasonable decision, neither for Norway nor for Sweden.

  • 285.
    Dzafic, Amir
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Stölder och inbrott på byggarbetsplatser: En studie om risker och konsekvenser inom NCC:s produktion2017Independent thesis Basic level (degree of Bachelor), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Theft and brake-ins at Swedish construction sites is a very common problem that mainly occurs during the production phase of building. The fractures that occur are not limited to a specific area but they also occur throughout the entire country. However, the areas around the major cities and larger national and European roads are most affected. Many companies are not prepared for the costs of a theft or burglary and there are no clear procedures for dealing with the situation that occurs. Stolen gods and burglaries is a waste of production that the companies should work harder to remove or at least reduce. The waste is so big that about 7000 burglaries and robberies from Swedish workplaces are reported annually. According to other studies, these 7000 burglars render a cost of 1.4 billion SEK annually for the Swedish construction industry.

    The work has been carried out and with the help of NCC Sverige AB section Värmland. The main purpose and goal of this work is to make NCC workplaces safer and more efficient by reducing the risk of a theft or burglary. The goal is also to give an increased understanding of what it means and what happens in the production phase after thefts and burglaries at construction sites.

    The method used to obtain the right information is primarily interviews and questionnaire surveys, but discussions have also been held with most supervisors, site managers and several other workers. In addition, site visits have been carried out at construction sites where routines have been investigated, placement of containers and security in and around the site offices as well as preventive measures and the risks involved on the site.

    The subject is quite unexplored, but there are some studies that have been done over the years. Svenska Byggbranschens Utveklingsfond, SBUF, has done several information papers and implemented a number of projects that deal with theft and burglaries on Swedish construction sites. Another major study that has been carried out is "Stölder och inbrott på byggarbetsplatser – omfattning, skadeverkan och risk", a study conducted at Malmö University on behalf of FoU Väst. These studies form the basis of my work and this is where knowledge and information about the subject has been retrieved.

    The investigations showed that a workplace that is close to major roads or which is located in a way that makes the insight poor, is at the highest risk of being affected by burglaries. Furthermore, it is possible to say that bad lighting, badly marked alarm signs and a workplace that is not properly protected in the form of proper fences and locks lies in a high-risk zone in case of a theft. There is a lot to work to do with the companies when it comes to routines and preventive measures. For example, one would be able to invest in a much more burglary fence which would make work difficult for any thieves.

    Given the pressure on building homes and other buildings in Sweden today, the risks will increase to be exposed by a burglary or a theft. This is an important factor that makes the topic interesting for companies in the industry so that they can get well prepared for each construction site in terms of prevention measures.

  • 286.
    Dzamalija, Zada
    Halmstad University, School of Business and Engineering (SET), Centre for Innovation, Entrepreneurship and Learning Research (CIEL), Sustainability, Innovation and Management in Building (SIMB).
    Den fysiska arbetsmiljön på väg- och anläggningsprojekt: Hur styrs säkerhetsarbetet på Skanska för att uppnå bättre arbetsmiljö2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 287.
    Döse, Magnus
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB, Betong & Berg.
    Silfwerbrand, J.
    Jelinek, C.
    Trägårdh, Jan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB, Hållbara byggnadsverk.
    Isaksson, M.
    Naturally occurring radioactivity in some Swedish concretes and their constituents - Assessment by using I-index and dose-model2016In: Journal of Environmental Radioactivity, ISSN 0265-931X, E-ISSN 1879-1700, Vol. 155-156, p. 105-111Article in journal (Refereed)
    Abstract [en]

    The reference level for effective dose due to gamma radiation from building materials and construction products used for dwellings is set to 1 mSv per year (EC, 1996, 1999), (CE, 2014). Given the specific conditions presented by the EC in report 112 (1999) considering building and construction materials, an I-index of 1 may generate an effective dose of 1 mSv per year. This paper presents a comparison of the activity concentrations of 4 0K, 226Ra and 232Th of aggregates and when these aggregates constitute a part of concrete. The activity concentration assessment tool for building and construction materials, the I-index, introduced by the EC in 1996, is used in the comparison. A comparison of the I-indices values are also made with a recently presented dose model by Hoffman (2014), where density variations of the construction material and thickness of the construction walls within the building are considered. There was a ~16-19% lower activity index in concretes than in the corresponding aggregates. The model by Hoffman further implies that the differences between the I-indices of aggregates and the concretes' final effective doses are even larger. The difference is due, mainly to a dilution effect of the added cement with low levels of natural radioisotopes, but also to a different and slightly higher subtracted background value (terrestrial value) used in the modeled calculation of the revised I-index by Hoffman (2014). Only very minimal contributions to the annual dose could be related to the water and additives used, due to their very low content of radionuclides reported.

  • 288.
    Edlund, Andreas
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Optimerad Samgranskning: En studie om samverkan mellan ArchiCAD och Solibri2012Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Nowadaysis it commonin the construction industrythat oncea decisionis made that a building willbe constructed, it should be done as soonas possible.Thisrequiresthatthe planningshould be performedin the shortest possible timewithoutany fault,so that the actual constructioncan begin.Coordinationeffectivenessis testedby the author who examineshow a modelmustbe designedin a CAD-programin order to be exported to a coordination program, wherethe buildingplanswill be examined.

              The thesiswas conducted on behalf of the companyMETOD arkitekterin Uppsalaas the final part ofthe three-yearbachelorprogramin construction engineering.

              The purpose ofthis project was toanalyzethe interaction ofCAD softwareArchiCAD andcoordinationprogramSolibri. Therefore,investigate themodel incoordinatingthe program andachieve an optimal3-D coordination. To perform this study the author made a literature study, an observational study, interviews with various disciplines, training and a test process in the programs. Thistesting processmeans thatthe authordrewupmodelsin ArchiCADand exportedthemtoSolibri, in order to checkwhether the modelswere consistentbetween the programs.

              The resultof the thesisshows that there areopportunities to improveplanningand coordinationin 3D toobtainan optimal and efficientcoordination model. Mostdisciplines usesoftware thatsupports theIFC format, which means that the modelscan be opened inother CAD programs. This would meanthat the modelwould betoensurequalitybefore it getsto thedrawings, and by that reducethe number of errorsat the construction site.

  • 289.
    Edrees, Tarek
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Structural Control and Identification of Civil Engineering Structures2015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    In general, the main purpose of a structural control system is to apply powerful control techniques that improve the behaviour of civil structures under various kinds of dynamic loading. The first part of this thesis presents novel applications of posicast and input shaping control schemes that have never previously been applied in the field of structural control. Numerical simulations of a benchmark three-story building with an MR damper are used to verify the efficiency of the proposed control theories. The superiority and effectiveness of the suggested schemes at reducing the structure’s responses were demonstrated using six evaluation criteria and by comparison to results achieved with well-established classical control schemes. Moreover, a comprehensive procedure for generating scaled real ground motion records appropriate for a seismic analysis and design of structures using the linear spectrum matching technique is presented based on a seismic hazard study.To efficiently control a structure, it is necessary to estimate its real-life dynamical behaviour. This is usually done using the Structural Identification approach, which is also addressed in this thesis. Structural Identification is commonly utilized to bridge the gap between the real structure and its modeled behaviour. It can also be used to evaluate the structure’s health, detect damage, and assess efficiency. Despite the extensive development of parametric time domain identification methods, their relative merits and the accuracy with which they predict the behaviour of vibrating structures are largely unknown because there have been few comparative studies on their performance under diverse test conditions, and they have not been verified against real-life data gathered over extended periods of time.Thus, the second part of this thesis focuses on applications of parametric and non-parametric models based on the Structural Identification approach in order to clarify their potential and applicability. In addition, a new strategy is proposed that combines this approach with techniques based on Singular Value Decomposition (SVD) and Complex Mode Indicator Function (CMIF) curves to detect structural damage.The methods developed in this work are used to predict the vertical frequencies of the top storey in a multi-storey building prefabricated from reinforced concrete in Stockholm, and to detect and locate damage in a benchmark steel frame. In addition, the non-parametric structural identification approach is used to investigate variation in the modal characteristics (frequency, damping, and mode shapes) of a steel railway bridge.

  • 290.
    Edstrand, Gustav
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Engberg, Jacob
    Linköpings Universitet.
    Analys av centralt beslutad extern tredjepartslogistik i Vallastaden: En fallstudie gällande värdeskapande för byggentreprenörens logistikverksamhet2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: External logistics coordination was decided after a long procurement process while parts of the project Vallastaden already started construction. The external logistics company creates and implements a logistics solution in a short time. The municipality has no formal connection requirements on developers, but has transferred to the third-party logistics to contract with the developers.

    The goal is to examine how the implementation of the external solution contract affects residential building and how an external third-party logistics solution works value creation for the building contractor.

    Method: For data collection observation and interviews have been used as methods of work.

    Findings: In order to create favourable condition for a builder and/or contractor in the implementation of a centrally decided external third party logistics solution requires: 

    • Early involvement of third-party logistics contractor in the planning stage with the motto "first and last on site"
    • Clear and well-developed conditions for procurement of connectivity requirements, and the possibility of adaptation of the technical solution according to the customer identified needs.
    • Open and continuous dialogue at all levels within the organizational structure.

    Implications: The complexity of how building projects should plan their logistics allows a handling of the issue at an early stage in the project is crucial. If the potential of the third party logistics for construction projects should be used needs to be early dialogue between the parties involved which the project's conditions have to control how the service should be designed.

    Limitations: The problem area and the number of actors involved in the external third-partylogistics make it difficult to pinpoint exact events that contributed to the situation has become in Vallastaden. The authors have not found the source of why it has been difficult to implement third-party logistics solution at an early stage in Vallastaden. What emerged during the process is that it needs to be sought answers higher up in the organizational structure of Vallastaden, but there is work boundaries made this a priority away and therefore not addressed in this report.

    Selected methods aimed solely at Skanska role in Vallastaden. Alternative viewpoints from different developers and construction contractors in Vallastaden has partly been highlighted in logistics meetings. It is important to point out that the work contains only a limited number of viewpoints on centrally approved third party logistics based on the many actors who are part of the project Vallastaden.

  • 291.
    Edström, Mikael
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Erfarenhetsåterföring mellan olika aktörer inom byggbranschen2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Experience feedback is an important tool to save time, money and to develop the construction industry. Many companies knows this, but despites these important advantages, experience feedback is rarely used. Former studies has shown that it, among others, can be explained by narrow time constraints and bad commitment. This study is made in cooperation with a company who is specialized in industrial building construction, this company as well other entrepreneurs is the case study in this bachelor thesis. 

     

    The purpose with this study is to illustrate the importance of the subject and the various earnings a company can make when they practice good experience feedback. As well as analyze how experience feedback works in collaboration between different actors, and with the help of the manufacturing industry apply different techniques to reduce waste and mistakes. 

     

    The study use four methods to collect data. These are questionnaires, interviews, observations and a literature study. All these methods has co-operated with a result that shows that different entrepreneurs agrees that experience feedback should be used. All the participants in the study believes that there are gains in time and money when it´s used. An explanation to why it´s not applied is because of narrow time constraint, which in turn is somewhat paradoxal because you can save time by using it. It also turned out in collaboration with other entrepreneurs that they don’t always share experiences because there may be financial profits in keeping the information for themselves, where the effects of modification and supplementary work also can counteract so that it´s not applied. 

     

    Experience is expensive, nor is it cheaper in a conservative industry. But there is hope, the people in it want change. There are already existing tools available and these are Lean Production, quality systems and working towards a processoriented organization. 

  • 292.
    Edvardsson, Andreas
    et al.
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Eriksson, Anders
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Hallbyggnadsteknik - en effektivisering av småhusproduktion2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim with this diploma work is to see if it is possible to transfer the technology used for industrial buildings to the production of small houses to lower the production costs. In the report, we show that the industrial building technology is possible to transfer to a small house. It also becomes more efficient to build the climate shell with our construction system compared with a traditional prefabricated small house. The total construction cost can with our system be reduced with 3-10 % depending on which facade material that is chosen.

  • 293.
    Edvardsson, Karin
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Highway and Railway Engineering (closed 20110301).
    Ekblad, Jonas
    NCC Roads AB.
    Magnusson, Rolf
    Dalarna Högskolan.
    Methods for Quantification of Lignosulphonate and Chloride in Gravel Wearing Courses2010In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402, Vol. 11, no 1, p. 171-185Article in journal (Refereed)
    Abstract [en]

    Due to oxidation, breakdown, and leaching, dust suppressants will be lost from the gravel road surface. Methods for residual dust suppressant concentration supervision are a valuable tool for estimating life-length and optimal application rates, and, hence, efficiency of different products. The objective of this study was to identify methods for quantitative analyses of lignosulphonate and chloride, develop and adapt the methods for application on a gravel matrix, and validate the methods using samples collected in-situ. Results strongly suggest that the reliability and repeatability of the developed methods (23% for lignosulphonate and 30% for chloride, respectively) are acceptable for determination of relative variations in residual concentrations of dust suppressed gravel wearing courses.

  • 294.
    Edwards, Ylva
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, CBI Betonginstitutet AB, Hållbara byggnadsverk.
    Emilsson, T.
    Malmberg, J.
    Skog, A. P.
    Capener, C.-M.
    Quality-assured solutions for green roof gardens on concrete deck with zero tolerance for leaks2016In: The Sustainable City XI / [ed] A. Galiano-Garrigos, C.A. Brebbia, WIT Press, 2016Conference paper (Refereed)
    Abstract [en]

    Eco-neighborhoods with gardens on concrete decks are for several reasons increasingly being prescribed today in major Swedish cities. However, there is a lack of knowledge, experience, standards and guidelines as well as collaboration between parties and stakeholders when installing such systems. It is incredibly important to avoid any leakage during the lifetime of a green roof garden but this cannot be completely guaranteed with today’s installation practice and project management. At Sustainable City 2014 in Siena, we presented a paper about a new project aiming at bringing together researchers, government and industry to collaborative development of new and attractive solutions for green roof gardens with consideration to the environment and high requirements for durability, materials, construction and energy efficiency. This paper is a continuation of the paper presented in Siena and reports on the most recent results from the collaborative project which will finalize in November 2016. After that, the project will be further evaluated in a proposed continuation project for another couple of years.

  • 295.
    Egerup, Felix
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Tränck, Jesper
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Resursslöseri i byggbranschen: Slöseri förenat med intern förflyttning av personal2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 296.
    Egerö, Mattias
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Östberg, Johan
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Kartläggning av orsaker till varierande sorteringsgrad av byggavfall: förslag till åtgärder för att möta målbilden2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In 2008, the European Commission presented a directive which, among other things, addresses how priority is given to preventing and managing waste in the Member States. Based on this directive, the Swedish Environmental Protection Agency has developed a national plan for how these issues will be dealt with in Sweden and how the goals set in the EU directive will be achieved. This plan deals with five priority sectors in which the construction industry is one of them.

    Peab AB is a large construction company and has most of its operations in Sweden. Because of this they are affected by the national waste management plan that has been drawn up and they take their part in the change work seriously. Their mindset is that all residues will be handled in an environmentally sustainable manner and have set the goal of achieving 100 percent source sorting of the construction waste.

    By the year 2017, Peab has set up a number of targets for source sorting in the business area Bygg. The targets state that at least 87% of waste should be sorted when leaving the workplace and no more than 8% to landfill (Peab, 2017). To achieve this, a solid sorting work is needed and Peab requested a survey of today's sorting work to further work on improvement measures.

    This work has been carried out with an exploratory survey to identify problem areas in waste management and then a method triangulation to collect data. A literature study has then been conducted to be able to analyze the results with evidence in already established research in the subjects concerned.

    The work has resulted in a report showing four aspects of sorting work and their impact on lack of sorting in projects. The four problem areas discovered are communication, third parties, signage and irresponsibility, and two of them have emerged in a common conclusion.

    Following the completion of the work, the conclusion could be drawn that the lack of use of signs has the greatest impact on the degree of grading and the risk that the target will not be achieved. Through increased use of signs, sorting work can be streamlined and several problem areas discovered are counteracted.

    The two problem areas that lead to a recommendation for continued work are lack of interest and the impact of third parties. The reason that it did not give rise to a conclusion is a lack of results. A more in-depth study of these two aspects would be needed.

  • 297.
    Eggers, Patrick
    University of Gävle, Faculty of Engineering and Sustainable Development, Department of Industrial Development, IT and Land Management, Land management, GIS.
    Parallelization of ray casting for solar irradiance calculations in urban environments2017Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The growing amount of photovoltaic systems in urban environments creates peaks of energy generation in local energy grids. These peaks can lead to unwanted instability in the electrical grid. By aligning solar panels differently, spikes could be avoided. Planning locations for solar panels in urban environments is very time-intense as they require a high spatial and temporal resolution. The aim of this thesis is to investigate the decrease in runtime of planning applications by parallelizing ray-casting algorithms. This thesis includes a software tool for professionals and laymen, which has been developed in a user centered design process and shows ways to perform those calculations on a graphics processing unit.After creating a computational concept and a concept of the software design, those concepts have been implemented starting with an implementation of the Möller-Trumbore ray-casting algorithm which has been run with Python on the central processing unit (CPU). Further the same test with the same algorithm and the same data has been performed on the graphics processing unit (GPU) by using PyCUDA, a Python wrapper for NVIDIAs Compute Unified Device Architecture (CUDA). Both results were compared resulting in, that parallelizing, transferring and performing those calculations on the graphics processing unit can decrease the runtime of a software significantly. In the used system setup, the same calculations were 42 times faster on the Graphics Processing Unit than on the Central Processing Unit. It was also found, that other factors such as the time of the year, the location of the tested points in the data model, the test interval length and the algorithm design of the ray-casting algorithm have a major impact on the performance of such. In the test scenario the processing time for the same case, but just during another time of the year, increases by factor 4.The findings of this thesis can be used in a wide range of software as it shows, that computationally intensive calculations can easily be sourced out from the Python code and executed on another platform. By doing so, the runtime can be significantly decreased and the whole software package can get an enormous speed boost.

  • 298.
    Egli, Josephine
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Rosendahl, Elisabeth
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Från gult till grönt: En studie för JM om smidigare utbyte till miljövänliga alternativ2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    According to the UN the building sector uses 40 % of the global resources (UNEP - Buildings, 2017).The construction industry has a major impact on the society and on building sites there are manychemical substances in circulation. Like the rest of the sector JM uses a lot of construction materials.The used material may contain chemicals that are harmful to humans and the environment which issomething that JM wants to change. JM strives to eliminate the use of materials with hazardouscharacteristics but the communication with suppliers and subcontracts complicates the work, in somecases.The purpose of the report is to investigate what options JM has in order to find flexible solutions formaterial replacement and to investigate how the communication is between JM and the manufacturers.The aim of the report is to achieve a solution for how to JM faster and more simply should exchangematerials with more environmentally friendly alternativesTo achieve a result the researchers of this report have conducted interviews, literature studies andinvestigations in JMs environmental product database. The result of the study is that communicationbetween JM and the suppliers could improve from both sides. It was also found that an effective wayto switch products to more environmentally friendly alternatives is to keep a regularly contact with thesuppliers. Another way to develop an environmentally friendly product is through the cooperation ofseveral industry-leading companies.

  • 299.
    Egnell, Karl
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Standardized Technical Building Requirement2016Independent thesis Basic level (university diploma), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Denna rapport behandlar tekniska beskrivningar. Främst med fokus på problematiken för att skapa dessa på national men även global nivå samt utvecklingspotentialen med att standardisera dessa. Rapporten inriktar sig på stora industriella aktörer med en repetitiv hantering av byggprojekt för att på minsta möjliga sätt hindra sin kärnverksamhet men även underlätta utveckling och utökning av sin produktion. Rapporten tar upp fördelar men även potentiella nackdelar med ett standardiserat förfarande, därigenom vad företag måste tänka på och säkerställa för att få en fungerande och utvecklande process. I syfte att motivera företagens arbete med standardiserade beskrivningar visar rapporten vilka riktvärden som kan påverkas. Riktvärden som baseras på kompetenta personers erfarenhet inom branschen. Med detta förklaras även vikten i att sätta upp mål för utvecklingen och samtidigt processer för att följa upp så att uppsatta mål uppnås men även återkopplas genom erfarenhetsåterföring och revidering. Tre större industriella aktörer har medverkat i arbetet med rapporten, alla tre med ett stort fokus på vad en standardisering kan innebära för deras verksamhet. Där av har rapportens kärndelar anpassats efter att stämma överens med företagens frågeställningar. Då tekniska beskrivningar inom branschen inte är något nytt fenomen men att standardisera dessa ännu ej är i bruk, konstateras att ämnet måste undersökas mer samt testas i praktiken för att helt kunna följa upp att företagen mål uppnås. Dock kan av rapportens slutsatser dras att det finns stora besparingar och effektiviseringar som potentiellt kan påverkas. Detta med utgångspunkt av digniteten för de projekt företagen kommer i kontakt med.

  • 300.
    Eivindson, Espen
    et al.
    Oslo and Akershus University College, Norway.
    Innvær, Berner E.
    Oslo and Akershus University College, Norway.
    Kolberg, Elisabeth
    Oslo and Akershus University College, Norway.
    Merschbrock, Christoph
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science. Oslo and Akershus University College, Norway.
    Rolfsen, Christian Nordahl
    Oslo and Akershus University College, Norway.
    Inefficiencies in Norwegian small-scale construction, or the problem of too long trucks?2017In: Procedia Engineering, Elsevier, 2017, Vol. 196, p. 543-549Conference paper (Refereed)
    Abstract [en]

    “When the truck arrived at the construction site it could not unload the material because it [the truck] was too long, we had to send it away […], this happens all the time in Oslo where we have to build on very small plots.” (Carpenter, Oslo). As the quote illustrates, inefficiencies and resulting low productivity remain a challenge for today’s small construction businesses. While the reasons for inefficiencies are not completely understood, various techniques for project planning and control have proven their practical value in mitigating them. Lean construction has been articulated as one of the concepts that can solve inefficiency problems. The national initiative “Lean construction Norway” initiated by government, academia, and industry, seeks to diffuse lean production principles in the construction industry. However, small to medium sized contractors remain largely excluded from the innovative practices. This article sets out to study what a small Norwegian contractor enforcing lean concepts in addressing construction inefficienciesmay gain. Ingrained in the concept of muda we exemplify waste related to waiting, overproduction, defects, inventory, motion, over processing, and transporting. We ran a case study in a small industry standard type of residential project executed by a small contractor. Data were collected based on a series of qualitative interviews conducted with the on-site personnel. The findings illustrate a variety of inefficiencies resulting in low productivity. We expect that management inspired by lean principles in conjunction with modern planning methods such as building information modelling may improve project delivery in Norwegian small-scale construction.

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