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  • 1.
    Abbasi, Mozaffer
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Analys och implementering av VSL-System i FEM-Design för kontroll av stabiliserande effekt: En undersökning i syfte att fastlägga effekten av VSL-kablar i FEM-Design för att utvärdera dess stabiliserande påverkan.2014Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 2.
    Abdula, Sham
    et al.
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Oksman, Dan
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Attefallshus som komplementbostadshus: Drömhus eller mardröm?2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Den 2 juli 2014 blev det enligt lag tillåtet för en- och tvåbostadshusägare att uppföra en bygglovsbefriad komplementbyggnad på max 25 kvadratmeter på den egna fastigheten. Rapporten undersöker vilket genomslag lagändringen har haft i Stor-Stockholm, Stor-Göteborg och Stor-Malmö. Undersökningen visar att lagändringen ännu inte har haft något stort genomslag. I rapporten undersöks även en utvald del av marknadsaktörers utbud av attefallshus avsett som komplementbostadshus. 

    Ett attefallshus utformas med miljövänligt hållbara material och inspireras av Vitruvius tre principer för god arkitektur. Huset konstrueras med avsikt att uppfylla kraven som ställs i PBL, PBF, BBR och EKS. Målet med de framtagna bygghandlingarna är att få startbesked från byggnadsnämnden i Växjö. 

  • 3.
    Abrahamsson, Caroline
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Waltersson, Johanna
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    FLEXIBLA BYGGNADER: Utformning av en förskola med en möjlig verksamhetsändring för framtida behov2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Society today has an increasing demand for environmentally and economically sustainable developments in order to create a sustainable society. Society’s growth in new construction is a big part of this, and by planning and building more sustainable buildings these requirements can be fulfilled. The development of flexible buildings, which can adapt to future needs of society, lead to a more efficient utilization and longevity of premises and generate more sustainable buildings.In Sweden, the municipalities are the country’s largest property developers and therefore have a significant responsibility to provide society with real estate and public buildings. In recent time we have seen a shift towards flexible public buildings and in particular preschools. With the current socio-economic climate and ageing population buildings like preschools need to be flexible to ensure they can cater for future demands of society.

    This degree project, within the Bachelor programme in Construction Engineering, has been carried out during 10 weeks on Tengbom Architects in Uppsala. The thesis deals with the subject of flexibility in buildings and includes a proposal for the design of a flexible building as a pre-school that in the future can be converted into a retirement home.

  • 4.
    Acuña, José
    KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
    Distributed thermal response tests: New insights on U-pipe and Coaxial heat exchangers in groundwater-filled boreholes2013Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    U-pipe Borehole Heat Exchangers (BHE) are widely used today in ground source heating and cooling systems in spite of their less than optimal performance. This thesis provides a better understanding on the function of U-pipe BHEs and Investigates alternative methods to reduce the temperature difference between the circulating fluid and the borehole wall, including one thermosyphon and three different types of coaxial BHEs.

    Field tests are performed using distributed temperature measurements along U-pipe and coaxial heat exchangers installed in groundwater filled boreholes. The measurements are carried out during heat injection thermal response tests and during short heat extraction periods using heat pumps. Temperatures are measured inside the secondary fluid path, in the groundwater, and at the borehole wall. These type of temperature measurements were until now missing.

    A new method for testing borehole heat exchangers, Distributed Thermal Response Test (DTRT), has been proposed and demonstrated in U-pipe, pipe-in-pipe, and multi-pipe BHE designs. The method allows the quantification of the BHE performance at a local level.

    The operation of a U-pipe thermosyphon BHE consisting of an insulated down-comer and a larger riser pipe using CO2 as a secondary fluid has been demonstrated in a groundwater filled borehole, 70 m deep. It was found that the CO2 may be sub-cooled at the bottom and that it flows upwards through the riser in liquid state until about 30 m depth, where it starts to evaporate.

    Various power levels and different volumetric flow rates have been imposed to the tested BHEs and used to calculate local ground thermal conductivities and thermal resistances. The local ground thermal conductivities, preferably evaluated at thermal recovery conditions during DTRTs, were found to vary with depth. Local and effective borehole thermal resistances in most heat exchangers have been calculated, and their differences have been discussed in an effort to suggest better methods for interpretation of data from field tests.

    Large thermal shunt flow between down- and up-going flow channels was identified in all heat exchanger types, particularly at low volumetric flow rates, except in a multi-pipe BHE having an insulated central pipe where the thermal contact between down- and up-coming fluid was almost eliminated.

    At relatively high volumetric flow rates, U-pipe BHEs show a nearly even distribution of the heat transfer between the ground and the secondary fluid along the depth. The same applies to all coaxial BHEs as long as the flow travels downwards through the central pipe. In the opposite flow direction, an uneven power distribution was measured in multi-chamber and multi-pipe BHEs.

    Pipe-in-pipe and multi-pipe coaxial heat exchangers show significantly lower local borehole resistances than U-pipes, ranging in average between 0.015 and 0.040 Km/W. These heat exchangers can significantly decrease the temperature difference between the secondary fluid and the ground and may allow the use of plain water as secondary fluid, an alternative to typical antifreeze aqueous solutions. The latter was demonstrated in a pipe-in-pipe BHE having an effective resistance of about 0.030 Km/W.

    Forced convection in the groundwater achieved by injecting nitrogen bubbles was found to reduce the local thermal resistance in U-pipe BHEs by about 30% during heat injection conditions. The temperatures inside the groundwater are homogenized while injecting the N2, and no radial temperature gradients are then identified. The fluid to groundwater thermal resistance during forced convection was measured to be 0.036 Km/W. This resistance varied between this value and 0.072 Km/W during natural convection conditions in the groundwater, being highest during heat pump operation at temperatures close to the water density maximum.

  • 5.
    Adolfsson, Rasmus
    Karlstad University, Faculty of Health, Science and Technology (starting 2013).
    Utformning av en infästningsstandard: En utveckling av kvalitetsarbetet hos Nordmarkens Fasader AB2015Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    As the construction industry today is increasing the demands on its actors and procedures to ensurethe quality of the final product, the work on quality assurance has increased in a greater degree.Quality assurance involves a systematic approach that often follow a specific quality system orquality mark. That this is conducted is often demonstrated by a certain certification.Nordmarkens Fasader in Töcksfors is a manufacturer and installator of windows, doors, walls androofs in aluminum and glass. To ensure the quality of their products, they work for the P-markingsystem that later allows them to P-label their products. The P-mark is the Science Partners ownquality mark and proves, among other things, that the product complies with statutory or regulatoryrequirements but also in most cases higher standards demanded by the market.In their work, Nordmarkens Fasader follows a quality manual, which in its turn is modeled after therules for P-marking. This is the official summarized description of the P-marking and contains orrefers to all the documents and document types included in the quality system of NordmarkensFasader.For the products of Nordmarkens Fasader to be developed a further step in working towards a goodquality and function, they want to establish drawings that deal with attaching elements in the wall, inthe quality manual. All this to get better track of what happens to the product after manufacture.Something that makes this even more important is that they do not always handle assembly of theirproducts. A standard of attachments in this case would result in that they can influence whathappens after manufacture. To achieve this it was necessary for a standard of attachments ofelements to be designed and then also integrated in the quality manual.Because there are many wall types to choose from, the most common and most abundant of thesewas elected. It all resulted in a number of standard drawings showing where some of the products ofNordmarkens Fasader should be attached in the selected wall. For this to be put into use in everydaylife it also had to be integrated into the quality manual. In addition to these standard drawings, themanual were changed while new documents also were created in this. All to achieve the best resultswith the quality work at Nordmarkens Fasader.This work will serve as a basis for future work on attachment drawings, in the quality manual, asthere is interest in bringing in multi-wall types in this.

  • 6.
    Afkari, Arash
    Halmstad University, School of Business and Engineering (SET).
    Sustainable Low-Cost Housing in Ethiopia: A Study of CSSB-Technology2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This degree project is about sustainable low-cost housing in Ethiopia with a focus on CSSB-technology, which is one method of constructing houses. The project allowed me to visit Ethiopia during seven weeks in 2010, to observe, gather information and to perform tests regarding the specific subject. It is a sub-project to a larger research project initiated in 2002 at Halmstad University in an attempt to introduce low-cost housing technologies for the Kambaata Region in Ethiopia. The aim of the research project has been to develop and test new, sustainable, low-cost building technologies intended for the population, with regard to local traditions, needs and affordability.

  • 7.
    Afshar, Samim
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Alaoui, Youssef
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Jämförelser mellan massivträ- och betongstommar i flerbostadshus: Bedömning av byggtid, väderkänslighet, arbetsmiljö, bekant byggteknik, installation, projektering, spännvidder, flexibilitet, brandsäkerhet, ljudisolering och fuktsäkerhet.2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 8.
    Agirman, Nesim
    et al.
    Dalarna University, School of Technology and Business Studies, Construction.
    Ali, Mustafa
    Dalarna University, School of Technology and Business Studies, Construction.
    U-värde av isoleringsmaterial i en kassett: En experimentell jämförelse mellan en fönsterkassett som har isolering och en utan isolering2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Insulation and insulation material is one of the most important components in the construction industry and has a wide range of applications and therefore the demand is huge. Because of the high costs on the market, new and different researches take place every day to find alternative insulation materials. The technology make the opportunities greater to find and use cheaper materials. Therefore, it is not un common to see insulations made of different materials every day.

    The purpose of this study is to investigate two Moniflexcassettes, one with insulation and one without, in a climate chamber, to then compare their u-values.

    The results showed the influence on the insulation, that the u-value was lower on the cartridge with the insulation, and therefore a proof that the insulation can use as an additional insulation. This applied especially for windows and glass portions who have a high u-value, which mean that windows and glass portions do not have to change to newer windows with lower u-values.

    The company Isolight´s current u-value of the cassette with the isolation was not the same as with the tested U-value in Högskolan Dalarnas climate chamber. On the cassette without insulation, there has been no comparison between the tested value and the value of the company because the company does not have a u-value for that.

  • 9.
    Ahlfors, JOhanna
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Häggdahl, Josefin
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Framtidens modulskola: En jämförande studie av arbetsmiljön i en tillfällig och en befintlig skolbyggnad2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 10.
    Ahlstrand, Sanna
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Bender, Johanna
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Nordström, Linn
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    A more efficient way of building in a developing country, influenced by industrialized building: A case study in Leticia, Colombia2015Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose:The purpose of this study is to approach a solution to reduce housing shortage, by using inspiration from an industrialized building concept, which can lead to the opportunity for underprivileged people to get a livable housing. The aim is to study how knowledge from industrialized building could be used for a more efficient way of building in developing countries similar to Colombia.

     

    Method:Utilizing literature studies for achieving abutment to published research also giving the authors an observant mind. With this knowledge, participatory observations were made as action research to explore the prevailing procedure when establishing a house. Operating analyzes, interviews were held in Leticia for understanding observed decisions. To be able to critically analyze the results from the interviews and observations, collected data were compared with knowledge based on the authors’ reference frames.

     

    Findings:Keystones identified as the overall concept are applicable on establishments in the western world, since the concept is designed after similar conditions. Capital is required designing a building system as well as establishing a factory for prefabrication of elements, conditions limited in developing countries. Climate conditions and prevailing corruption prevents implementation of the concept. Identified weaknesses during the observations, noted repetition of unnecessary and non-value adding activities. One conclusion is not to implement the entire industrial building system, only practice the mindset. Initially keystones are implemented such as planning, exchange of information and reflection of performed projects, in order to improve upcoming projects. These keystones require no direct capital, merely a mindset that should be implemented.

     

    Implications:The outcome of this study is to enlighten the subject, since obvious weaknesses were noticed, with capacity for development. Further research is realistic because, in a long term it will help solving the housing situation. For example, using this result as underlay for education like creating more efficient building, enlightening planning for reducing unnecessary non value-adding activities. As a conclusion of the study, identified weaknesses during the establishment affects the efficiency, creating unnecessary costs. A developing country should focus upon emphasizing reduction of costs, since their economic status is already declining.

     

    Limitations: The observations during the case study have been concentrating on one small-scaled project in Leticia, Colombia. No further observations have been made but complements such as literature studies and interviews. Due to lack of time and language barrier, the amount of collected empirical data was too limited to provide durable conclusions for question formulations. Since only observations were performed on one establishment, a general result cannot be submitted.

  • 11.
    Ahmad, Ban
    et al.
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Vieglins, Gustav
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    A energy and cost comparison between a BBR and a passive apartment building2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Idag ställer samhället och konsumenterna allt större krav på klimatsmarta boenden för att minska energianvändningen. Trots det byggs fortfarande till stor del traditionella hus efter Boverkets byggregler. På uppdrag av WSP studerar denna rapport hur energiåtgången hos ett befintligt flerbostadshus i Stockholm, byggt efter BBR, hade sett ut om det uppförts för att fylla kravspecifikationen för passivhus enligt FEBY12. Samt hur livscykelkostnaderna hade skiljt sig för de två husen.

    Studien inleddes med en datainsamling av för det befintliga flerbostadshusets areor samt Uvärdena och följs upp med simuleringar av flerbostadshuset i beräkningsprogrammet Energihuskalkyl. Datorberäkningarna jämfördes med manuella beräkningar för att säkerställa värmeförlusttalet samt andelen köpt energi. Varefter flerbostadshuset anpassades med Kingspans detaljbibliotek för att uppfylla FEBY12s passivhuskrav och följdes upp med samma dator- och manuella beräkningar. Där de båda resultaten presenteras och jämförs.

    I rapportens andra del undersöks och jämförs de två flerbostadshusens livscykelkostnader, sett till investerings-, drifts- och underhållskostnader. Då beställaren sekretessbelagt de verkliga kostnaderna antogs de verkliga kostnaderna för det befintliga huset från Statistiska Centralbyrån. För att beräkna det teoretiska passivhusets investeringskostnader beräknades materialkostnaderna för de båda husen efter de givna ritningarna. Där skillnaden i materialkostnaderna adderades till investeringskostnaden för det passiva flerbostadshuset.

    Underhållskostnaderna antogs till detsamma för det passiva flerbostadshuset samtidigt som att driftskostnaderna sänktes procentuellt med den minskade mängden köpt energi från energiberäkningarna.

  • 12.
    Aid, Graham
    KTH, School of Industrial Engineering and Management (ITM), Industrial Ecology.
    Industrial Ecology Methods within Engagement Processes for Industrial Resource Management2013Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    The global use of resources such as materials, energy, and water has surpassed sustainable levels by many accounts.  The research presented here was explicitly normative in its aim to improve the understanding of, and make sustainable change toward highly systemic issues of resource management.  The core methods chosen to work toward this aim were bottom up action research procedures (including stakeholder engagement processes) and industrial ecology analysis tools.  These methods were employed and tested in pragmatic combination through two of the author’s case study projects. The first case study, performed between 2009 and 2012, employed a multi-stakeholder process aimed at improving the cycling of construction and demolition waste in the Stockholm region.  The second case study produced a strategic tool (Looplocal) built for facilitating more efficient regional industrial resource networks. While the highly participative aim of the cases required a larger contribution of resources than that of more closed studies, it is arguable that the efficacy of approaching the project aims is improved through their employment. 

  • 13.
    Aid, Graham
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Industrial Ecology (moved 20130630).
    Brandt, Nils
    KTH, School of Industrial Engineering and Management (ITM), Industrial Ecology (moved 20130630).
    Improvement of aggregate cycles in Stockholm and the Baltic Region: Activities and results of the BRA initiative2012In: WASCON 2012 Conference proceedings / [ed] M. Arm, C. Vandecasteele, J. Heynen, P. Suer and B. Lind, 2012, 1-9 p.Conference paper (Refereed)
    Abstract [en]

    From 2009 until 2011 project BRA (Bygg-och Rivningsavfall i Stockholms Län) “Construction and Demolition (C&D) waste in Stockholm County” was coordinated from the division of Industrial Ecology, KTH. This project was focused on actively improving (from plural perspectives) the cycles of C&D (specifically non-metallic inert) materials in the region. In response to the normative aim and inter-systems complexity, a highly participative action research procedure was adopted. Through processes of network communication, workshops, a course, and an international symposium - a number of issues (such as market development, recycled product quality, greenhouse gas impacts, collaborative planning, and statistics) were prioritized, researched, and acted upon. Indicators for measuring progress in selected areas were developed and preliminary action plans created. At a final co-organized symposium Swedish delegates laid the groundwork for the establishment of a Swedish C&D recycling b ranch organization. This initiative of continued collaboration between and within sectors is seen as a vehicle for the priorities and action requirements identified in BRA to be further enabled and held in focus. Furthermore, these actors taking ownership of the process is seen as a success in accordance to the original aims and the need for further cycles of evaluation, planning, and action.

  • 14.
    Aid, Graham
    et al.
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekologi.
    Brandt, Nils
    KTH, Skolan för industriell teknik och management (ITM), Industriell ekologi.
    Improvement of aggregate cycles in Stockholm and the Baltic Region: Activities and results of the BRA initiative2012In: Proceedings of the 8th International conference on Sustainable management of waste and recycled materials in construction, Gothenburg, Sweden, 30 May - 1 June 2012 / [ed] M. Arm, C. Vandecasteele, J. Heynen, P. Suer and B. Lind, Swedish Geotechnical Institute , 2012, 1-9 p.Conference paper (Refereed)
    Abstract [en]

    From 2009 until 2011 project BRA (Bygg-och Rivningsavfall i Stockholms Län) “Construction and Demolition (C&D) waste in Stockholm County” was coordinated from the division of Industrial Ecology, KTH. This project was focused on actively improving (from plural perspectives) the cycles of C&D (specifically non-metallic inert) materials in the region. In response to the normative aim and inter-systems complexity, a highly participative action research procedure was adopted. Through processes of network communication, workshops, a course, and an international symposium - a number of issues (such as market development, recycled product quality, greenhouse gas impacts, collaborative planning, and statistics) were prioritized, researched, and acted upon. Indicators for measuring progress in selected areas were developed and preliminary action plans created. At a final co-organized symposium Swedish delegates laid the groundwork for the establishment of a Swedish C&D recycling b ranch organization. This initiative of continued collaboration between and within sectors is seen as a vehicle for the priorities and action requirements identified in BRA to be further enabled and held in focus. Furthermore, these actors taking ownership of the process is seen as a success in accordance to the original aims and the need for further cycles of evaluation, planning, and action.

  • 15.
    Akram, Hoger
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kasem, Kani
    University of Borås, Faculty of Textiles, Engineering and Business.
    En jämförande studie mellan platsgjuten betongvägg och skalvägg: Kostnad och tid för respektive byggmetod2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The thesis is a comparison between two different construction methods: half shell precast walls and site cast concrete walls. The study has been made for SEFA Betongentreprenad AB who is aiming for the most profitable construction method.The important aspects, which are emphasized in this thesis are costs, time and working environment.The result shows that a building with half shell precast walls is causing increased material cost in the project which also leads to a higher prime cost for the concrete contractor. On the contrary it will require shorter time schedule compared to working with the site concrete wall which the main contractor benefits from, because less time equals decreased overhead cost and management cost. In addition half shell precast walls provides a better working environment compared to site cat concrete walls because less work activities are required at the worksite which also leads to a reduction of accidents.Time and cost is based on unit-time from Nybyggnadslistan 1999 and the price inquiry. To compile the prime cost and time for the total work a careful calculation has been performed in various computer programs so like Bluebem, Wikells and Excel. The survey is based on documentation of a project which includes both a school and student dormitory in Lund.

  • 16.
    Akrawi, Kahi
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Sharif, Vina
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Tätningsmetoder av tunnlar för skydd av installationer: En studie baserad på litteratur, intervjuer och tidigare arbeten.2016Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 17.
    Al agedi, Bilal
    et al.
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Ibrahim, Maytham
    Mälardalen University, School of Sustainable Development of Society and Technology.
    Energiförbrukning och utsläpp av koldioxid vid byggande av väg2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Markförstärkning i ett vägbygge kan göras på olika sätt. I detta examensarbete jämför vi två av dessa metoder, nämligen massutskiftningsmetoden och användning av kalkcementpelare ur energi- och miljösynpunkt. För att jämföra dessa två metoder togs fram ett excelbaserat räkneverktyg där resultatet av energiförbrukningen fås i kWh och koldioxidemissioner i ton CO2. Denna jämförelse gjordes för ett specifikt vägprojekt som använde massutskiftningsmetoden för vägunderbyggnaden. Det som ingick i beräkningen var schaktning, fyllning, krossning, sprängning, transporter och kalkcementpelare. För denna uträkning användes data från både entreprenörer som var med i projektet och företag som hade dokumenterade data.

    Metoden som förbrukade minst energi och som släppte ut minst koldioxidemissioner var massutskiftningsmetoden. Det som gjorde att kalkcementpelare till en sämre metod var den höga energiförbrukningen som krävdes för tillverkningen av kalk och cement. Det som krävde mest energi i tillverkningsprocessen var ugnar där höga temperaturer krävdes.

    Skillnaden mellan utskiftningsmetoden och kalkcementpelare i objektet var att i massutskiftningsmetoden krävdes urgrävningar för att schakta bort jordmaterial med dålig hållfasthet och ersätta det med bergmaterial med hög hållfasthet. I denna metod går energi åt till schaktning, fyllning och transport. Medan förstärkningsmetoden med kalkcementpelare förbrukar energi för tillverkning, transport och installation. Eftersom metoden går ut på att vägbyggnaden ska vila på pelarna genom att borra ner dessa i marken istället för att schakta bort stora volymer och transportera dem till fyllningen så är det lätt att tro att kalkcementpelare sparar energi genom att minska massförflyttning och långa transporter. Resultatet av detta examensarbete har visat motsatsen.

  • 18.
    Alanne, Kari
    et al.
    Aalto University.
    Schade, Jutta
    Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
    Martinac, Ivo
    Kungliga tekniska högskolan, KTH.
    Saari, Arto J.
    Aalto University.
    Jokisalo, Juha
    Aalto University.
    Kalamees, Targo
    Tallinn University of Technology.
    Economic viability of energy-efficiency measures in educational buildings in Finland2013In: Advances in Building Energy Research, ISSN 1751-2549, E-ISSN 1756-2201, Vol. 7, no 1, 120-127 p.Article in journal (Refereed)
    Abstract [en]

    The economic viability of novel energy-efficient design concepts has been evaluated in Finnish educational buildings. The total energy consumption of representative target buildings with each design concept has been found using the whole-building simulation tool IDA Indoor Climate and Energy 4.0, and the financial viability has been assessed using the discounted payback period method. Different thermal insulation and air tightness properties of the building envelope, and different ventilation's heat recovery efficiency assumptions and heat distribution options have been investigated. The results suggest that a prudent attitude should be taken toward the investments in ultra-low-energy designs. Total energy-saving potential of 25-32% can be obtained. The payback periods varied from 15 to more than 40 years. The results can be generalized in cold climates and techno-economic conditions similar to Finland

  • 19.
    Albertsson, Anton
    et al.
    Halmstad University, School of Business, Engineering and Science.
    Skoglund, Lukas
    Halmstad University, School of Business, Engineering and Science.
    Rullarmering: Att adoptera en armeringsmetod2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Rebar carpet is an innovation that favors the working environment of the rebar workers and saves time. Reinforcement workers today are a vulnerable group. Heavy lifts and backbreaking postures are a part of their everyday work. It is already established that work with rebar carpets is both time-saving, economically beneficial and from a working environment point of view better than traditional reinforcement work. Despite all benefits it is used in rather few projects today.

    The purpose of this study is to identify how the construction industry embraces new innovations related to in situ concrete with post-tensioned reinforcement. The goals are to find out how designers, contractors and manufacturers are working to adopt rebar carpets in the construction process and to shed light on, factors affecting the adoption.

    The study is based on semi-structured interviews with designers, contractors and a representative of a rebar manufacturing company.

    Designers and contractors have not, generally speaking, been actively working to adopt rebar carpet. The governing factors for the use of rebar carpets is the designers and contractors knowledge and previous experience of rebar carpet. The contractors who have previous experience of rebar carpet can imagine using rebar carpet again and contractors with no previous experience believe that they need more knowledge of rebar carpet before they dare to try. Design engineers who have designed for rebar carpet before has it in mind when they design other projects. Designers who have no previous experience of rebar carpet demand more knowledge about how they can facilitate the use of rebar carpet.

  • 20.
    Alcazar, William
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Hammargren, Erik
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Anläggning av traditionellt VA-schakt: En fallstudie i logistik och byggstyrning2014Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    A growing issue in the construction industry is how production can become more

    efficient by using logistical solutions. Companies can minimize the cost of a project by

    reducing the time to perform the work.

    The purpose of this report was to examine the logistics related to pipe trenches for

    SIAAB. The report's focus has been on solving problems and planning that would

    facilitate the work of the project Vaksala-Lunda Etapp 3.

    The case study consists of interviews with SIAAB's employees and an observation

    where the progress of a traditional pipe trench has been documented using checklists.

    Questions to the report’s case study come from the theoretical part, which is based

    on literature on construction management and logistics in general. The observation

    lasted five weeks and the biggest time-consuming events that affected the pipe trench

    during this time, has received most attention. Last part of the report is a compilation

    of the authors' own thoughts and opinions.

    The production was difficult in this case because the earlier stages of the project were

    weak. The extent of SIAAB's planning could have been higher, but this was

    complicated when employees were tied to previous projects.

  • 21.
    Aldarwash, Mustafa
    et al.
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Bajqinca, Alban
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Nybyggnation av badrum : Jämförelse mellan prefabricerat och platsbyggt ur ett ekonomiskt perspektiv2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Syftet med arbetet är att, genom en ekonomisk undersökning skapa underlag som visar vilket alternativ av produktionsmetoderna prefabricerat eller platsbyggt badrum som är att föredra vid en nybyggnation av vårdhem. 

    Resultatet visar att det platsbyggda badrummet ger en ökad totalt kostnad på 627457 kr vilket motsvarar 11,1 procent dyrare än det prefabricerade badrummet. 

  • 22.
    Alho, Yasser
    et al.
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Usef Eillas, Rostam
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Learning time for graduated project manager2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Byggbranschen står idag inför stora utmaningar gällande rekrytering av erfarna projektledare. Företagen har upplevt svårigheter med att hitta erfarna projektledare, detta beror på att det saknas nästan två generationer av projektledare samt att många går i pension. En lösning till problemet är att anställa nyexaminerade projektledare för att fylla luckan. Problemet med nyutexaminerade är att de saknar erfarenhet när de kommer ut i arbetslivet. Det är en utmaning för konsultföretagen, eftersom inlärningstiden för att bli projektledare vanligtvis är långa perioder.

    Syftet med denna studie är att förtydliga inlärningstiden för de nyutexaminerade projektledare samt att ge organisationen ett underlag för att de ska kunna se vad de bör skapa för förutsättningar och metoder. Huvudfrågorna som behandlas i vår studie är ”Vad innebär det att vara projektledare?” och ”Vad krävs för att man skall gå från att vara en nyutexaminerade byggingenjör till att bli projektledare?”

    Undersökningen är en kvalitativ studie som genomförts på WSP Management Östergötland. Den empiriska datainsamlingen har skett via personliga intervjuer med elva respondenter fördelade på Norrköping och Linköping kontoren.

    Studien visar på att vara projektledare kan variera mycket beroende på hur man väljer att tolka det, men inom byggbranschen handlar det om att leverera en produkt eller ett resultat till en begränsad budget och till en bestämd tid. Som projektledare är man beställarens ”högra hand” och ska uppfylla kundens önskemål i projektet. För att detta ska gå ihop krävs ständig kommunikation så att man förstår varandra och undviker missförstånd.

    Med utgångspunkt från undersökningen har vi även konstaterat att det som krävs för att man ska gå från att vara nyexaminerad byggingenjör till att bli projektledare inom området management, är rätt metod, rätt organisatoriska- och individuella förutsättningar samt att man övervinner krav och hinder som ställs från beställarsidan.

  • 23.
    Alinaitwe, Henry Mwanaki
    et al.
    Makerere University, Kampala, Uganda.
    Widén, Kristian
    Lund University, Lund, Sweden.
    Mwakali, Jackson
    Makerere University, Kampala, Uganda.
    Hansson, Bengt
    Lund University, Lund, Sweden.
    Innovation Barriers and Enablers that Affect Productivity in Uganda Building Industry2007In: Journal of Construction in Developing Countries, ISSN 1823-6499, E-ISSN 2180-4222, Vol. 12, no 1, 59-75 p.Article in journal (Refereed)
    Abstract [en]

    The construction industry has of recent been blamed for lack of innovation. Lack of innovation in the industry is believed to be responsible for the decreasing or stagnant levels of productivity in comparison with other industries. This paper reviews the major barriers and enables to innovation in general. Propositions were made about the factors that affect innovation in the construction industry which were then formulated into a questionnaire. A survey was made on building contractors in Uganda, a developing country, targeting those with financial strength, large in size, and with high capacity to carry out big projects. The identified factors were then ranked and correlated. The level of training in science, engineering and technical education, and the level of research and development at the industry level are looked at as the greatest innovation enablers in building that will drive forward labour productivity. The size of the domestic market and the level of security are the worst innovation barriers that lead to low productivity in the building industry in Uganda. Contractors, policy makers and the government should address the identified factors in order to improve productivity.

  • 24.
    Alinaitwe, Henry
    et al.
    Makerere University, Kampala, Uganda.
    Widén, Kristian
    Lund University, Lund, Sweden.
    Mwakali, Jackson
    Makerere University, Kampala, Uganda.
    Hansson, Bengt
    Lund University, Lund, Sweden.
    Building firm innovation enablers and barriers affecting productivity in Mwakali and Taban-Wani2006In: Advances in Engineering and Technology: Proceedings of the First International Conference on Advances in Engineering and Technology 16-19 July 2006, Entebbe, Uganda / [ed] Jackson A. Mwakali & Gyavira Taban-Wani, Oxford: Elsevier, 2006, 268-276 p.Conference paper (Refereed)
  • 25.
    Alklid, Erik
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Finnander, Jakob
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Arbetsmiljömodell för byggarbetsmiljösamordnare på små byggföretag2016Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
  • 26.
    Allawirdi, Teresa
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Gunduz, Helen Rebecka
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Tidsplanering och visualisering inom anläggningsprojekt2016Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 27.
    Allert, Eric
    et al.
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Dalgren, Carl
    Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
    Introduction of newly qualified structural engineers in small construction companies2015Independent thesis Basic level (university diploma), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Byggbranschen präglas framöver av stora pensionsavgångar vilket kommer kräva rekryteringen av ny arbetskraft. Många av de rutinerade tjänstemännen handplockas till de stora konsultföretagen där arbetsvillkoren och förmånerna i vissa fall upplevs bättre än hos entreprenadföretagen. Därför måste de mindre entreprenadföretagen anställa nyexaminerade byggnadsingenjörer i allt större utsträckning. Introduktionsprocessen för en nyanställd, och i synnerhet en nyexaminerad tjänsteman kan ta lång tid och ta upp resurser som mindre företag inte alltid kan avvara. Denna studie syftar därför till att försöka hitta faktorer och tips som leder till en lyckad introduktion gällande första arbetsuppgifter, socialisation och motivation för bibehållandet av arbetskraft. Denna studie är baserad på teori kring ämnet som sedan backats upp av empiri i form av sammanlagt åtta intervjuer av tjänstemän på företagen, Byggentreprenören AB och Stångebro Bygg AB.

  • 28.
    AlNasseri, Hammad Abdullah
    et al.
    Lund University, Lund, Sweden.
    Widén, Kristian
    Lund University, Lund, Sweden.
    Aulin, Radhlinah
    Lund University, Lund, Sweden.
    Towards a Taxonomy of Planning and Scheduling Methods in the Context of Construction Management2013In: Proceedings from 7th Nordic Conference On Construction Economics And Organisation 2013: Green Urbanisation – Implications For Value Creation / [ed] Ole Jonny Klakegg, Kari Hovin Kjølle, Cecilie G. Mehaug, Nils O.E. Olsson, Asmamaw T. Shiferaw & Ruth Woods, Trondheim: Akademika forlag, 2013, 570-581 p.Conference paper (Refereed)
    Abstract [en]

    Planning and scheduling are considered as one of the most difficult but most important processes from perspectives of project management. These processes involve implementation of a widerange of planning methods used by different organizations with various levels of planning knowledge. The planning methods for scheduling can be classified as traditional methods (e.g. line of balance, Gantt chart and critical path) and modern methods (e.g. last planner and critical chain). Over time these methods had advanced from paper based to computer based. However, some project planners still prefer using the traditional methods despite other new alternatives. Users of those methods have different perspectives about the efficiency and effectiveness of the different planning methods used to manage different projects. Evidences from the secondary data found from extensive literatures have been used to assess the planning and scheduling methods mentioned above. A taxonomy describing each of the method in terms of their theories, key features, application areas, benefits and limitations is presented. The preliminary outcome of this paper may provide a tool to aid organizations in selecting and prioritizing the most appropriate methods to be developed and implemented in planning and scheduling of their projects. It also initializes a theoretical base for more rapid taxonomy studies on the use of different planning and scheduling approaches. As an overall, the present paper reminds practitioners of common ground about its important insights on how such taxonomy studies have potential to make scope of those methods and tools clearer, especially when they compare among them within the same application contexts.

  • 29.
    Amir, Halmat
    et al.
    Örebro University, School of Science and Technology, Örebro University, Sweden. Örebro universitet.
    Björk, Chritian
    Örebro universitet.
    EGENKONTROLLER OCH FUKT, EN DEL I KVALITETSARBETET2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To ensure a high quality of the final product it’s important that quality work is considered during the production. Quality work affects the company in a positive way by making our customers happy, improving and retaining our good reputation and leads to a good economy. NCC suspects that there’s insufficient quality work during production in the construction in-dustry across the country and based on that they want us to examine how they’re handling this. In this thesis we’ve done the interviews on five of NCC's ongoing projects in Örebro County in order to provide a picture about how the process of quality controls and moisture at the construction sites works. We’ll identify how employees work with their quality controls and moisture during the production, if there are any deficiencies in the work and in such case what’s causing it.

  • 30.
    Andersen, Linn
    et al.
    Halmstad University, School of Business, Engineering and Science.
    Widell, Hanna
    Halmstad University, School of Business, Engineering and Science.
    En villaleverantörs möjlighet till etablering i Finland: analys av för- och nackdelar2015Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction market has, as a result of the crisis in Europe been uncertain in recent years. During the year 2013, the construction will be stabilized, in particular Finland. The geographical proximity between Sweden and Finland and similarities in cultures and climates makes Finland a coveted market for many Swedish companies.

    Differences in national regulations and guidelines, which are produced by the authorities in different countries, are examples of barriers that may hamper the process, including for Swedish villa suppliers, to establish themselves on the Finnish market. It may be useful when facing a new export drive, to look up what similarities and differences there are between the countries building codes, to prevent mistakes and unnecessary costs to the project work.

  • 31.
    Anderson Kronlid, Carl
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Sundin, Robin
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
    Ekonomisk och teknisk uppföljning vid anläggningsprojekt: För möjlighet till bättre erfarenhetsåterföring2012Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Due to the obvious fact that one can never be hundred percent sure of what's hidden

    under the ground surface, construction work is naturally hard to project.

    However, many of the work methods are executed in the same way on various

    projects. The department of construction work at JM AB region öst describes a lack

    of follow-ups and feedback between the calculators and production managers.

    In this thesis we have studied the communication between these groups and also

    how they share experiences and knowledge. In order to get the full picture

    of the day-to-day operations we used three methods to gather information. Studying

    literature gave basic knowledge of theories about feedback, and the

    necessity of working with giving feedback. In order to understand the process of

    construction work we made several interviews, both structured and nstructured. A

    survey was made with the purpose of getting a feeling of the attitude from the staff

    towards the importance of working with feedback.

    The result of this work showed a clear lack of a structured way of giving feedback.

    The communication between the calculators and production managers is

    not satisfying. Especially in the early phases of a project. At the end of this report we

    give some suggestions on how the work with feedback could be improved.

    These suggestions focus on creating ways to easily be able to do follow-ups on the

    day-to-day work at the early stages of a project. There's much to gain

    from having "good feedback". For instance, small problems and obstacles could be

    avoided due to better planning. Giving and receiving feedback could also raise

    the feeling of being important among the staff.

  • 32.
    Andersson, Anders
    Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Engineering and Chemical Sciences.
    Sociala krav i byggentreprenader: En tillfällig trend eller här för att stanna?2014Independent thesis Basic level (university diploma), 15 credits / 22,5 HE creditsStudent thesis
    Abstract [en]

    Europe has, since the economic crisis of 2007, gained increasing social segregation. The gap between rich and poor has increased and the large number of hidden statistics regarding people excluded from the labor market is greater than in many years. Social exclusion has thus taken a toll on community groups that already before the crisis had a hard time getting included. Groups such as young, elderly, immigrants and people with mental of physical disabilities. To curb this development, the European Commission have, since the 2004 directives, enabled public sector clients to, through procurement of goods, services and contracts, include measures that promote social consideration.

    Social consideration is a term that have been a part of Swedish procurement legislation since 2007, and was updated in 2010. This update meant that the meaning of this term was given greater weight and that clients were more clearly encouraged to use the term.

    The term social consideration have proven to be an unclear term, both in European tutorials and governmental investigations. Investigators describe the possibility as difficult to interpret and legally complex. To enable a smooth implementation, an open dialogue between clients and contractors have been recommended. A dialogue which, according to this study based on personal interviews, is being missing, partly or completely, in many places around central Sweden.

    The goal and purpose of this study is based on a range of issues surrounding the concept of social consideration and its impact on the public sector in Sweden. What is being done, what is wanted and why. The personal interviews where conducted with municipal housing companies and municipalities in order to reconcile the current state of the new contract term.

    These interviews clearly show that the term social consideration is known by the majority of public clients in central Sweden. However, only one out of seven interviewees have hitherto pushed through a work contract with predetermined requirements on social considerations. Notable though, is that three out of seven interviewees where in the process of publishing work contracts with the instituted social demands criterion.

    The justification for why the remaining parties did not, or where not planning to, set social standards in public work contracts was motivated mainly by the absence of knowledge in the subject. Clearer evidence and better guidance was considered a linchpin for future implementation. It was consistently put forth that social responsibility can lead to good future synergies for both society and their own company. But the design of how to set the requirement or requirements and in what stage, is something that every interviewed party had its own opinion about.

    Despite divided opinions on how and at what stage social considerations should be included in public procurement, there is a unified voice among the interviewed parties saying that the concept of social responsibility and consideration is here to stay.

  • 33.
    Andersson, Jenny
    et al.
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Malin, Enbom
    Linnaeus University, Faculty of Technology, Department of Building Technology.
    Hur ökas implementering av visuella arbetssätt inom Skanska?2015Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Visuella arbetssätt har visat sig vara effektivt inom byggbranschen. Studien omfattar de visuella arbetssätt som Skanska använder sig av; visuell styrning och visuell projektering. Syftet med studien är att öka antalet projekt som väljer att implementera arbetssätten. Därav har underliggande problem identifierats varför inte projekt väljer att implementera arbetssätten i den utsträckning som Skanska önskar.

    Det har visat sig under studiens gång att visuell projektering har implementerats i större utsträckning än visuell styrning, detta för att visuell projektering har ett mer utvecklat underlag. En jämförelse av verktygens implementering har gjorts.

  • 34.
    Andersson, Lina
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Trochez, Michelle
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Building Technology and Design.
    Accelererande tillsatsmedlens påverkan på betongens egenskaper: Med fördjupning på betongens uttorkning2015Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 35.
    Andersson, Linnea
    et al.
    Dalarna University, School of Technology and Business Studies, Construction.
    Ekeblad, Jenny
    Dalarna University, School of Technology and Business Studies, Construction.
    Energieffektivisering av klimatskal - miljonprogrammets flerbostadshus: Tjärna Ängar, Borlänge2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    During The Million Homes Programme, 1964 – 1975, over one million homes were built and it’s now time for an extensive modernization of these buildings.

    The purpose of this work was to see how the building envelope of a multifamily building from the Million Homes Programme can be energy efficient. This was done through enquiries and calculations, and by comparing these to current and future requirements of energy use. The enquiries that have been conducted were tests of impermeability and thermography. The calculations suggest both individual and combined actions to improve the building envelope.  The enquiries and calculations do not consider installations, architectural values, or economy, only how much the energy use can be optimized through improving the building envelope. 

    The best result achieved through combined actions was a reduction of energy use by 32,3 %. The individual action with the best result was the replacement of windows and balcony door: 16,4 % reduction of energy use.

    Only the building envelope has been taken in to account in this rapport which means that a greater improvement is possible if installations also is included.

    An important conclusion of the project is that the building envelope has a great effect on a building’s energy usage. The requirements of energy use that come into effect January 1, 2021 can be accomplished by only correcting the deficiencies in the building envelope.

  • 36.
    Andersson, Marcus
    Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
    Erfarenhetsåterföring på NCC i Umeå2017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Successful experience feedback is not common among constructing entrepreneurs since it is hard to practice. NCC in Umeå is one of many constructing entrepreneurs that consider themselves to be poor in this field, which is the reason why they requested a study to be carried out in their organisation. The goal is, inter alia, to identify the current situation. This in order to clarify the attitude towards experience feedback within the organisation. The study leads to a suggestion of how NCC should work with experience feedback in the future, in order to improve it.

     

    A literature study was made with the purpose of gathering enough knowledge, for example about experience feedback, quality and constant improvement. This theory is the foundation on which the further parts of the study rests; the interviews and observations within the company. These interviews and observations aims towards creating an overall picture of the current situation in the company. Moreover they generate primary data on how the organisation wishes to work in order to improve experience feedback. The result of the interviews and observations are analysed together with the theory as reference. This leads to the conclusions which are drawn about how NCC can improve their experience feedback.

     

    The lack of prioritise of experience feedback is the major contributory factor to why experience feedback does not function in the current situation. This since the board have an absence of engagement on the field. Therefore, the needed time for reflection and analysis after a finished project is not given. Another important reason to why the organisation finds experience feedback difficult is the lack of a functioning system of documentation.

     

    In the future, NCC should allocate the time required for a successful work with experience feedback. The board should become more active in this matter and look upon this work as an investment, since it can increase the effectivity in the organisation and reduce the quality deficiency. One person in each project should be in charge of compiling and documenting experiences. These experiences then needs to be labelled and documented in a digital database in order to enable an easy search. These documents should content a summary of the project, protocols from the final meetings, contact lists over the staff involved and a key figure with the sum of all costs from the calculation. Moreover, a compilation with pictures and explanting texts from each part of the building is recommended. This since visualisation was described as an important tool for experience feedback during the study. 

  • 37.
    Andersson, Marcus
    et al.
    Halmstad University, School of Business, Engineering and Science.
    Erro, Ossian
    Halmstad University, School of Business, Engineering and Science.
    BIM-modeller som bygghandling: Spårning av problem med BIM-modeller som bygghandling gentemot traditionella ritningar2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 38. Andersson, Martin
    et al.
    Vikard, Peter
    Säkrare byggarbetsplatser: En rapport om arbetsmiljö i allmänhet och fallolyckor i synnerhet2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In Sweden there are 299 000 working in the construction industry. The construction industry is one of the industries where most accidents occur every year. During the last ten years there have been 111 death accidents in the construction industry and 48 of them were falling accidents. That means, in average, one death accident every month.

    Falling accidents gives serious injuries to the persons who are affected by them. It is anticipated that this report will investigate the factors beyond the falling accidents and also to present proposals that can decrease the number of falling accidents in the future.

    To secure a healthy and safe construction site it is of great importance that both the employers and the employees cooperate towards the same goal. A good work environment will benefit both the employer, the project will be finished in time with a good profit margin, and the employees will be satisfied to everyday come to a secure construction site.

    The result of this report indicate that it’s very important to plan the work before executing it ,so that everyone involved knows what they are going to do. This, together with, better management from the company’s directors to the employees will reduce the risk for accidents to occur.

  • 39.
    Andersson, Mikael
    et al.
    Dalarna University, School of Technology and Business Studies, Construction.
    Lind, Christoffer
    Dalarna University, School of Technology and Business Studies, Construction.
    Genomstansning i betong: En jämförelsestudie mellan Eurokod 2, Strusoft Winstatik Punching och Eurocode Software caeEc230.2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Computers have become invaluable for advanced calculation tasks in most industries.

    Formerly, designers had to rely on his skills and knowledge to perform calculations.

    Nowadays, designers can execute a calculation without the need to use the actual formulas

    behind. It is recommended by experienced designers that some of the programs used in the

    building industry, which are based on the European Eurocodes needs to be validated.

    The aim of this study has been to calculate the punching capacity of ordinary reinforced

    slab and to design the shear reinforcement, according to Eurocode 2. The method was a

    theoretical study of the Eurocodes. A calculation sheet for punching capacity was made in

    Mathcad. The calculations from the sheet were compared to Winstatik Punching and

    caeEc230. The work has been defined to include only an inner column on a concrete slab

    with a circular cross section without any column heads or other reinforcements. In order to

    achieve realistic calculations, nine cases with different slab thicknesses and spans were

    manipulated.

    The capacities from the three calculations were nearly identical, both at the columns

    perimeter and at the control perimeter. The greatest differences were found in the design of

    the shear reinforcement. They showed similar amount of reinforcement in terms of area, but

    offered no guidance on the design. CaeEc230 suggested about double the amount of rebar

    cuts than the calculations in Mathcad. Winstatik Punching reported no total at all.

  • 40.
    Andersson, Niclas
    Halmstad University, School of Business, Engineering and Science, Centre for Innovation, Entrepreneurship and Learning Research (CIEL), Sustainability, Innovation and Management in Building (SIMB).
    BIM Adoption in University Teaching Programs: The Swedish Case2013In: Proceedings of CITA BIM Gathering Conference 14-15 November 2013 / [ed] Dr. Allan Hore, Barry McAuley, Dr. Roger West, Dublin: The Construction IT Alliance , 2013, 163-168 p.Conference paper (Refereed)
    Abstract [en]

    Implementation of BIM in the construction industry relies on sufficient knowledge and skills about BIM in order to gain momentum and success. Thorough understanding of the possibilities as well as challenges related to the application of BIM constitutes essential drivers for the adoption of BIM among all the industry actors throughout the construction process. Thus, there is a need for supply of knowledge and skills about BIM and its implications on the organisation, communication, management, business models etc. in construction. Accordingly, universities play an important role as a knowledge and skills supplier that helps to provide the necessary conditions for the implementation of BIM in the construction industry. This study investigates how the curricula of engineering and architectural teaching programs at Swedish universities and university colleges have responded to the apparent and increasing demand for BIM competences in industry. The study relies on a survey of 10 universities and 8 university colleges that provide engineering and architectural teaching programs at a master’s and/or a bachelor’s level. The findings show that bachelor’s engineering programs at university colleges generally have adopted BIM into the curricula to a somewhat larger extent compared to engineering programs at a master’s level. The BIM-adoption in architectural programs is, however, significantly limited. Further, the degree of BIM-adoption differs significantly between the respective teaching programs. Only few universities have adopted BIM as an integrated subject in courses that deal with general construction related issues. The predominant approach is to implement BIM-subjects as discrete teaching modules, i.e. stand-alone courses, rather than as a cross disciplinary aspect implemented in a number of the existing courses. Besides, a considerate mismatch is identified between the technical characteristics of the BIM curricula at universities and the process-oriented approach to BIM represented by the industry. Thus, the universities would benefit from a closer collaboration with the industry in BIM-related matters and they need to take on a strategic approach to BIM at an overall university or program level in order to avoid isolated BIM initiatives at a single course level.

  • 41.
    Andersson, Niclas
    et al.
    Lund University, Lund, Sweden.
    Widén, Kristian
    Lund University, Lund, Sweden.
    Construction Innovation Systems - A Sector Approach2005In: Understanding the Construction Business and Companies in the New Millennium / [ed] Kalle Kähkönen & Martin Sexton, Helsinki: VTT – Technical Research Centre of Finland & RIL – Association of Finnish Civil Engineers , 2005, 203-213 p.Conference paper (Refereed)
    Abstract [en]

    Recent studies depict the general need to increase and improve innovation in the construction industry. Innovation processes are traditionally described and analysed either on a macro level or a micro level. Production in construction is basically project oriented, as opposed to manufacturing industries for which most of these theories are developed. It is not fully sufficient to study innovation from a micro or a macro level due to the effects of the project orientation and the large number of actors in the construction industry. The objective of this paper is to present a model of the construction innovation systems from a sector systems approach. The study rests upon findings in the area of innovation systems in general and construction innovation systems in particular on one hand and construction sector systems analysis on the other. This paper presents arguments for the development of activity based innovation systems at a construction sector level.

  • 42.
    Andersson, Niklas
    Växjö University, Faculty of Mathematics/Science/Technology, School of Technology and Design.
    Granskning av reklamationer och dess orsaker hos Sävsjö Trähus AB: Review of complaints and reasons for that at Sävsjö Trähus AB2007Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    House production is a process where high quality thinking is important in order to avoid customers complaints. The niche of Sävsjö Trähus AB (STAB) is to adapt each house as close as possible to the specific requirements of the costumer. This complicates the production process of the houses and also increases the risk of possible complaints. During 2006 STAB had complaints orresponding to approximately 3,1 millions SEK. The aim and the purpose of this study is to examine the complaints, the checkpoints and the different stages in the process of house building in order to counteract the origin of complaints and to give advise that can reduce the number of inspection remarks.

    One result of the study is a division of complaints in damages that are physically caused and problems that are caused by wrong decisions - caused of lack of communication between involved persons. In order to counteract the origin of complaints more intensive and clearer information should be exchanged among involved parties e.g. with the help of the business programme Pyramid. 3D blueprints should also be made in order to communicate what the house will look like when it is finished. This will make the customer aware of what has been decided in an early stage. Another recommendation is a change of the salesmen’s education in order to get a better overall vision of the house production (go beside a salesman, a draughtsman, production personnel and finally maybe

    also participate in a house rising). STAB should also continue to reward salesmen that achieve no remarks at the inspection. Further STAB should commit skilled installers or engage own assembly staff under STAB or under the salesman and demand that this staff makes all of the house risings. Further STAB should to subcontractors emphasize the need for improved packaging of woodwork.

  • 43.
    Andersson, Paul
    et al.
    Halmstad University, School of Business and Engineering (SET).
    Ladan, Igor
    Halmstad University, School of Business and Engineering (SET).
    Transport av volymelement: Förutsättningar ur ett företags perspektiv2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Building with volume element is relatively new and has started to increase more and more. The regulations that exist to regulate and determine how the transports of volume elements are to be conducted are diffuse and not very well adjusted to address the issues with transporting volume elements. Today there are a number of instances that a company has to turn to in order to get a somewhat different view, what regulations say and interpret it in order to know what applies and not applies regarding the transportation of volume elements. regulations. The rules that are in place make it tough for the volume element producing companies to develop and continue to be active on the market. New stricter laws regarding environment safe building leads to the volume elements getting larger which makes it even harder to transport them from a law and rules point of view.

  • 44.
    Andersson, Pelle
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Effektivisering av materialleveranser: En undersökning av möjliga förbättringar för leveranser av våtrumsinredning på JM2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Logistics in the construction industry is a difficult and troubled area with great room for improvement. Planning, preparation, management and control over material flow have become increasingly important for a company in order to keep up with the competition and reduce their costs.

    The purpose of this thesis is to investigate and identify possible improvements in the supply management regarding the interior for the sanitary rooms at JM- constructions. To identify possible issues with the supply management three of JMs projects in Uppsala have been analyzed.

    The result presented in this report shows that there is problems with the current supply management, problems which can be solved by introducing a Construction Consolidation Centre.

    Furthermore recommendations are given to introduce a pilot project with a Construction Consolidation Centre including: washstand, mirror cabinet, shower screen and towel rack. 

  • 45.
    Andersson, Sebastian
    et al.
    Halmstad University.
    Burnelius, Jesper
    Halmstad University.
    Miljöbetong2014Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 46.
    Andersson-Vass, Vilmer
    KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
    Temperatursprickor i betong: Metodutveckling för sprickbegränsning och uppföljning av uppsprickning i en tunnelkonstruktion2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In order to reduce the risk of thermal cracks in a concrete structure it is recommended to reduce the temperature differences between already existing concrete parts and the newly cast parts. Therefore, adjacent and already cast parts of the structure are sometimes heated up prior to casting of a new concrete part. This reduces the temperature differences within the structure and thus the risk of thermal cracks. This heating is generally done via heating cables placed in the concrete. This method has two drawbacks: firstly, one has to plan for the heating cables in an early stage and secondly, the cables sometimes break when cast in. As an alternative and compliment to the heating cables, a new type of heating mat for heating of concrete structures was designed and produced during 2014. It is built the same way as frost thawing mats but has a lower electrical effect to avoid overheating when heating the concrete.

    The main subject that is investigated in this thesis is the effect the heating mat has on the underlying concrete. This was investigated in four field trials by measuring the temperature in concrete members while heating them up with the heating mats. The field trials were effected on concrete slabs and vaults and the heating mats were covered with a concrete curing mat made of 10 mm cellular plastic. The field trials were conducted in sunny and dry conditions as well as in cloudy and rainy conditions. Data from the field trials were used to produce a proposal on how to model the heating mat’s warming effect in Contest. This proposal is presented in Section 5.1.2and is the main result of this thesis. It can be used to include the heating mat’s effect in simulations to estimate thermal crack risks in Contest.

    In addition, two real castings of a tunnel structure are described in which heating mats were used to reduce the risk for thermal cracks. These two castings are studied regarding the risk for thermal cracking. Finally, an economical comparison is made where using heating mats is compared to using heating cables.

    The conclusion of this thesis is that the warming effect of the heating mat can be modeled in Contest in a simple and appropriate manner according to the proposed method. The proposed method considers that precipitation and sunshine influence the heating of the concrete. The actual temperature rise in the heated concrete might therefore be greater than what is obtained using the method in Contest, which gives a rise in temperature on the safe side. This conservative, slightly low estimation of the rise in temperature corresponds to using heating cables mounted on the upper reinforcement with a c / c distance of 40 cm. From an economic point of view, the purchase of heating mats means a relatively important initial investment cost compared to heating cables. Using heating mats instead of heating cables is therefore initially more expensive, but will eventually be profitable since the heating mats are not consumed. Based on the economic assumptions made in this thesis the heating mat was less expensive than heating cables if used more than about 30 times.

  • 47.
    Andreasson, Josefine
    et al.
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    Falck, Sandra
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Mechanics, Byggteknik.
    När befintligt ska bli nytt: Optimering av ombyggnation i befintlig kontorslokal2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Vid utformning av kontor är krav på arbetsmiljö, tillgänglighet, trivselfaktor och att kunna påvisa sitt varumärke i kontoret av vikt. För att kontoret ska bidra till ett positivt arbetsklimat och ett effektivt arbetssätt bör även utformningen anpassas till den specifika verksamhet som bedrivs. Ett kontor med attraktiv utformning och bra arbetsmiljö ökar organisationens attraktionskraft mot befintliga och framtida medarbetare.

    Rapporten behandlar krav och aspekter att beakta vid ombyggnation av kontor och planering av ny kontorstyp i existerande lokaler. Med ett befintligt kontor finns givna förhållanden som ska tas hänsyn till och därför sammanfattas fakta om tekniska- och social aspekter som är av vikt vid valet av kontorstyp. Tekniska aspekter är ljud, ljus, luft, temperatur, bärande byggnadsdelar, vatten och avlopp, brand och el. Sociala aspekter innefattar ergonomi, kulörval, medarbetarhälsa, digitalisering, estetik och inredning. Olika kontorstyper beskrivs och utformningskrav från lagar och branschföreskrifter presenteras.

    Utförd studie baseras på en fallstudie av Skanskas kontor i Uppsala där en behovsanalys utförs och ett förslag på aktivitetsbaserad kontorslösning presenteras. 

  • 48.
    Anheim, Fredrik
    et al.
    Luleå University of Technology, Luleå, Sweden.
    Widén, Kristian
    Lund University, Lund, Sweden.
    Learning organizations in the Swedish construction area2001In: Construction Economics and Organization: Proceedings of the 2nd Nordic Conference on Construction Economics and Organization: 24–25 April 2001, Gothenburg, Sweden / [ed] Jan Bröchner, Per-Erik Josephson & Bengt Larsson, Göteborg: Dept. of Building Economics and Management, Dept. of Service Management, Chalmers Univ. of Technology , 2001, 259-266 p.Conference paper (Refereed)
  • 49.
    Ankaräng, Nils
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Davidsson, Edvard
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Analys av arbetsplatsomkostnader2014Independent thesis Basic level (university diploma), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Konkurrensen inom byggbranschen har ökat de senaste åren och byggföretagen tvingas att ta större kontroll över sina kostnader för att fortsatt kunna driva en lönsam verksamhet. Intäkterna är något som man inte har så stora möjligheter att påverka, då det är bostadsmarknaden i stort som styr hur mycket man kan få betalt för sina produkter och byggnader. Den egna kostnadskontrollen och omkostnaderna har blivit det stora fokusområdet, då det är via dem som man kan förbättra sina marginaler. Detta arbete har skrivits i samarbete med JM Bostad Stockholm som idag har ett stort fokus inom detta område. Då projekten ofta är unika i sig kan det vara svårt att jämföra projekten med varandra för att se vilka arbetsplatser som är kostnadseffektiva samt i vilka skeden som ett byggprojekt är mest krävande gällande arbetsplatsomkostnader. Syftet med denna studie har varit att undersöka arbetsplatsomkostnader för byggnadsprojekt med liknande utformning. Detta för att få fram var i projekten arbetsplatsomkostnaderna uppstår och härleda dem till skeden i den strukturerade tidplanen och se hur de varierar efter den strukturerade tidplan som det arbetas efter. Detta för att efter avslutad studie kunna göra kostnadseffektiva projektplaneringar för ett mer konkurrenskraftigt byggande.

  • 50. Annas, Mattias
    et al.
    Sundberg, Niklas
    Effektivisering av byggproduktion: vid byte av fönster2011Independent thesis Basic level (professional degree), 15 credits / 22,5 HE creditsStudent thesis
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