Change search
Refine search result
12 1 - 50 of 55
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1.
    Alomar, Rahaf
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    George Joseph, Beinu Shyne
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    The use of artificial intelligence in BIM and user preferences data: A framework for design sustainability evaluation and improved decision making2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Sustainability evaluation in building designs needs to consider the three aspects of sustainability, social, environmental and economic, simultaneously. The social aspect is less focused on the existing sustainability assessment methodologies and should be more incorporated in the assessment. The aim of this paper is to contribute a new method to sustainability evaluation that incorporates user preferences and important factors from the three aspects of sustainability and investigates Artificial intelligence (AI) for finding the best design that fits the user needs. Therefore, a framework in which a metric to compute the design quality of life (QoL) and an algorithm for evaluating design sustainability is proposed for best decision making. Building users, experts, and data from Building Information Modelling (BIM) simulation results were incorporated into the process. The study involves a literature review, a survey for collecting user preferences as methods and an experiment for testing the framework. Artificial data from designs and user is used in the experiment as inputs. The results demonstrate the feasibility of this framework to evaluate design sustainability and approximate the design that fits best the user’s requirements based on the three aspects of sustainability simultaneously. User preferences are incorporated into the framework to improve evaluating the social aspect of sustainability. More comprehensive design sustainability evaluation can be developed based on the proposed framework.

  • 2.
    Alsterlund, Karin
    et al.
    Jönköping University.
    Andler, Fanny
    Jönköping University.
    Hantering av oanvänt byggmaterial på byggarbetsplatser2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The construction industry generates over 100 million ton of waste every year. When it comes to sustainability there is focus on material type, energy use, indoor climate, transports and waste. There are different certification systems that can be used to classify the buildings. In those certification systems there are no requirements on unused building material. 13 percent of the waste contains unused material. Unused material means material and products that are ordered to the construction site but is not used in the construction. The goal with the project is to analyse how to reduce the amount of unused material that goes to waste on big construction companies in Sweden.

    Method: This thesis is done through a qualitative study with the methods of literature study, document analysis and interviews. The literature study showed the current research front. Document analysis and interviews provided information about the companies sustainable goals, ethical regulations and working methods.

    Findings: The thesis shows that unused material occurs because of difficulties to quantify material because of the tight time schedule and not wanting to risk getting downtime in the production. The material gets damaged when it is handled on the construction site. The material is disposed to follow the ethical requirements of the company but is not in line with the sustainability goals. All interview responders agreed on the need of change to achieve the goal. The company has a working method where the trucks drive the material to a terminal and then out to the construction when it is time for the material to be used. This method could be used to minimize the disposal. Better communication between the projects would help unused material to be taken care of in a different project. The problem is that since it is different owners of the material depending on the purchase of contract it is not always easy to handle the material between the projects. To sell the unused material has been discussed before in the company but because of the lack of space and resource consumption it is problematic. Material also get damaged from the weather, but the lack of space is the reason why a tent not is a good solution.

    Implications: In order to reduce the occurrence of unused material, BIM, Lean, prefabrication and terminal management can be used. The materials that become unused can be taken care of in a different project, better communication between the projects will reduce material disposal.

    Limitations: The thesis is only theoretically analysing how to reduce disposal of unused material. No measures of time or economical aspects has been analysed. The work does not consider material like waste, consumables or material that are useable after demolishes. The result is useful in larger companies since smaller companies do not have the same problematics.

    Keywords: Building Information Modeling, BIM, disposal,  durability, environment, environmental objectives,  ethical rules, Lean Construction, material handling,  material waste, terminal management, unused building materials, waste and energy loss reduction.

  • 3.
    Andersson, Clas
    et al.
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Andersson, Edvard
    Jönköping University, School of Engineering, JTH, Mechanical Engineering.
    Analys och utvärdering av produktionsupplägg2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Toms in Habo moulds jelly candy. The company has a good demand for theirproducts while the factory's machines are in need of an upgrade. Therefore, newmachinery will be purchased and meanwhile there is a vision to change the layoutof the plant. A new arrangement of the plant is necessary because today's disposalof floor space lack conditions to produce large quantities. Toms have developed asuggestion of a new production arrangement, but an evaluation of this is needed.The thesis focuses on evaluating and developing the existing proposal to Toms. Inorder to do so four independent suggestions for a layout of the plant were madewith the method of Systematic Local Planning (SLP). The making of a situationanalysis clarified the conditions required to perform an SLP. The developedsuggestions were valued by a number of criteria. The criteria where establishedfollowing the conditions needed for production. The suggestion given the highestscore in the evaluation was then compared against the suggestion that wasdesigned by Toms. To clarify differences in flows between the various suggestionsarising from the work a spaghetti diagram were drawn for each suggestion.The comparison revealed that both suggestions were similar structured. Theevaluation shows that the suggestion that the thesis presents has a betterutilization of the area and an approach that makes it easier for the staff at thevarious workstations to see each other.Another issue has been how a requested molding machine is to be placed. Givenfrom the beginning have been two options from Toms. Our recommendation is inconsensus with the thesis highest scored suggestion, which means one of theoriginally given options.

  • 4.
    Andreasson, Elin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Sparring, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    MILJÖCERTIFIERINGENS PÅVERKAN PÅ ARBETSGÅNG I STOMBYGGNAD OCH STOMKOMPLETTERING2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Environmental certifications strengthens a contractors environmental profileand means sustainability in regards to the environment. It is of interest to establishwhich obstacles and differences in workflow that environmental certifications cancause and thereby imply challenges in construction. The purpose with this paper is toexamine what impact the environmental certification Miljöbyggnad Silver has on acontractors work in the construction stage with focus on structure and frameworksupplement.

    Method: To reach the purpose of this paper empirical data have been collected throughinterviews, private documents, and observations of building construction. This researchemploys a qualitative method to get a comprehensive understanding of Miljöbyggnadin construction, where respondents with different occupations and extents of experiencewith Miljöbyggnad have been chosen for interviews.

    Findings: This research shows that the indicators in Miljöbyggnad that mainly have animpact on construction is Moisture safety, Documentation of building material andPhasing-out of harmful substances. The research shows that the biggest differencebetween conventional construction and construction with Miljöbyggnad is the amountof documentation that is needed. Construction with Miljöbyggnad also differsdepending on what occupation one has.

    Implications: The conclusion of this research is that there are no great obstacles withMiljöbyggnad Silver in construction. Indicators from Miljöbyggnad impactsconstruction with additional obligations for site management and does not implicate adifference in already established ones. Recommendations following this research is toinvolve and encourage Miljöbyggnad for everyone involved in construction.

    Limitations: This research is limited to big contractors and the environmentalcertification Miljöbyggnad Silver where focus have been structure and frameworksupplement. Through analyses of indicators and interviews the authors have concludedthat it is structure and framework supplement where impact following Miljöbyggnadexists. The result of this research and its conclusions are considered to apply with othercontractors with similar routines and work flow.

  • 5.
    Axell, Robert
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Hellqvist, Gustav
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Införandet av BIM i ett medelstort entreprenadföretag2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
  • 6.
    Backström, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Wikström, Ludvig
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Effektivisering av ekologisk dagvattenhantering i stadsmiljö2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In the city of Jönköping problems with the irregular flow, erosions and transport of sediment materials are recurring in the brook Strömsbergsbäcken. The problems is somewhat caused by an increased flow of storm water in the brook, which leads to high flow peaks in some parts of the brook since the original furrow is not dimensioned for the increased amount of water. The purpose of this project work is to make ecological drainage management in urban environments with a high amount of storm water discharge more efficient. The objective with the report is to create valuable material of how to accomplish ecological drainage management in urban areas and that the report will be useful for future similar connections. To fulfill the objective, the following three questions have been designed as a significant part of the final project report:

    • How can the load on the general drainage system be reduced?
    • How can the pollution effects of storm water runoff in urban areas be reduced?
    • Which treatments are appropriate to enhance the ecological storm water management in Strömsbergsbäcken ?

    The methods that have been used to solve these questions are document- and literature studies, and also a case study.The thesis results shows that the storm water flows from four of the nine areas that has its outlets in Strömsbergsbäcken, need to be treated through some kind of a solution or method that delays the water flow. The treatment could be performed in the area, before the storm water reaches the storm water network, which leads to Strömsbergsbäcken. The storm water flows can also be reduced by treatments adjacent to the outlets in the brook, where the largest flow peaks occurs. For example an essential solution to decrease the flows in Strömsbergsbäcken is to reconstruct the old dam located near one of the outlets into a basin, which will delay the stormwater flows.

  • 7.
    Berntsson, Amanda
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lager, Sandra
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Energieffektiviseringsstödet till kommuner: Utfall & framtidsutsikter2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Environmental and climate issues are constantly on the agenda. At the climatechange conference in Paris, it was decided that the global average temperature shouldnot increase more than 2°C. This means that the energy consumption must be reduced.With the EU's 2020 targets as a basis, national goals have been set, which means thatSweden will achieve a 20 %increase of the energy efficiency by 2020. The public sectorshould act as a role model, therefore the Swedish Energy Agency was handing out asubsidy between 2010 and 2014 as a contribution to local governments for improvingenergy efficiency in its own organization. The goal of this study is to analyze how theenergy efficiency subsidy has helped municipalities in their work to reduce the energyuse in its real estate, and what remains to do to reach the 2020 target.Method: To reach the goal both a qualitative and quantitative study has been made.The data collection methods was interviews, a document analysis and a literaturereview. A case study has been made together with Herrljunga municipality.Findings: The energy efficiency subsidy has several positive effects. The energy usehas been reduced by 8% between 2009 and 2014 for the whole country and the casestudy object has been reduced by 12%. This can be refer to that the municipality hasprioritized the issue of energy higher. Other positive effects include improved indoorclimate and user behavior and that they have better control over energy consumption.The energy work is proceeding in many municipalities after the subsidy, the work willbe financed with own funds. To achieve the goal they should continue the work thatthey began but also complete it with other actions. This may be, for example: replaceheating- and ventilation systems, train the user group and renovate energy smart.Implications: The study shows that the subsidy has provided a push to energy issuesin the municipalities, the subsidy has resulted in a decreased energy use. After thesubsidy stopped many municipalities continued to work when they have seen thebenefits. The study also shows that it is possible for Sweden's municipalities to achievea reduction of energy use by 20% by 2020 in their real estates. To reach this Swedishmunicipalities needs to continue to work actively with energy issues and make newenergy efficiency measures.Limitations: This study has been limited to the municipality's own real estates. Theresult of the study is not valid for all the municipalities that received the subsidy asindependent but it provides an overview of the outcome of the municipalities together. Every municipality can learn from this report.

  • 8.
    Björk, Evelina
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Fast, Kim
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Effektivisering av energianvändningen i en förskola2011Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This rapport contains an examination of the energy consumption of a kindergarten, which areas that have the largest impact on the energy consumption and what can be done to reduce those areas in ways that are relatively easy and profitable. It is also analyzed if it is possible to reduce the energy consumption from today’s consumption to a consumption that fulfils the demands placed on low energy houses by FEBY.

    The focus has been on reducing the energy consumption of the areas ventilation, heating system and hot water system, since those seemed to be the easiest ones to affect and since the building is quite recently built.

    There are different kinds of ventilation systems, at the moment the building have a CAV-system, which means that the ventilation is too high during large parts of the day. There are different ways to manage the ventilation system, for example presence detection, humidity sensors, CO2 sensors, temperature sensors and season adjustment. Many of those are in the end dependent on CO2 sensors to guarantee a good indoor climate, therefore the focus have been placed on this system.  

    The building is heated through district heating which is relatively easy to connect to a couple of sun panels to contribute to the heating system and hot water system. There are different ways of connecting district heating with solar panels and those are described, as well as the cost and the repayment time. A comparison with a building with an electric heating system has been made as well.

    It is important to get solutions that are profitable, that the repayment time isn’t too long. Solar cells and wind turbines are examined as well, but the repayment time for solar cells are too long at the moment. The repayment time for solar cells varies between 42 - 75 years, while the expected lifetime is 25 years. Concerning ventilation, a reduced ventilation of 10, 20, 30, 40 and 50 % have been examined. With only reduced ventilation the demands on low energy houses could not be matched, but it was possible in two cases with the use of solar panels. The usage of a wind turbine meant that the ventilation had to be reduced even less to match the demands on low energy houses. The repayment times for the solar panels and the wind turbine are both around 14 years. 

  • 9.
    Björklöf, Angelica
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Davidsson, Ida
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Vägledande belysning på stationsområden: Särskilt utformed för personer med synnedsättning2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report presents a field study of how the platforms are seen during the dark hours by people with and without visual impairment cataract. The field study was carried out with both qualitative and quantitative data as a basis.

    The qualitative data was collected through a visual assessment of the platforms in four out of five station classes that Swedish Transport Administration has. The observations were made with and without simulated visual impairment to provide a comprehensive picture about the orientation and visual comfort for all travelers. Photometric data were collected with an illuminance meter to see how the platform met the requirements for its associated lighting class and whether there was any connection between the illuminance on the surface, and the experience of the environment visually.

     

    The questions answered in this report, if five lighting classes are necessary and how the platforms are experienced by travelers with and without visual impairment. Earlier research on the guidance route and contrasts confirmed the results of the study in which observations of platforms shows that orientation in environments without contrasts between surface colors will be difficult to get around in for people with visual impairment. There is little difference in visual comfort and orientation of the various station classes. The results show that the most important thing for a person with cataract is a uniform illumination and clear guidance route. Without loss of vision it seems that the quality of light and how well maintained the facility is perceived to be affecting the sense of security more than surface colors and light contrasts.

  • 10.
    Björkén Nilsson, Sofia
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Hansson, Jennifer
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    En jämförelse av två arbetsmetoder för framtagning av rumsbeskrivningar2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: BIM have been criticised as a standalone framework and the believe is that the next step in BIM development is cloud computing. The technology simplify planning of a sustainable construction and hasten the building process through a collaborative friendly information management among different project actors. The implementation of the technology hasn’t been that noticeable since companies are struggling to understanding the technologies contribution. The goal of this research is therefore to investigate the potential of using cloud technology in architects daily work with room finish schedule.

    Method: To answer the goal of the study, interviews about room finish schedules have been made with five architect companies to collect empirical data. The company's internal documents of room finish schedule have been analysed and the research also makes a literature study and an observation of the cloud service BIMeye.

    Findings: The study shows that the main differences between an analogue and digital approach are: the link to the model, input of information and management of revisions. The companies have generally a positive attitude towards the technology, but there are doubts about changing their way of working. The cloud service BIMeye meets the companies needs and has great potential to make several tasks, that are considered time consuming in today´s work, more efficient, such as lay-up of rooms, input of information, review of conflicting documents and management of revisions. This mainly through the database's connection to the model and the database's way of managing information more automated.

    Implications: The conclusion that can be made is that great potential is seen with cloud services as a working method for producing room finish schedules. The transition process to cloud services implies a change of working method but not in the final result. Where cloud services entail additional work in the model to enable a connection to the description, but at the same time contributes to an automatic input of information about rooms. Another change in working method is the ability of cloud services to create parameters that differs from the otherwise analogue paper-work. Revisions in the database get a break through throughout the whole description, in contrast to individual adjustments in the document. Recommendations as a result of the study is to inform companies about the possibilities and impact the technology has on their work. In order to achieve an overall perspective in the industry, new solutions are required so that companies see internal profits with the implementation.

    Limitations: The result is considered to be applicable to other architect firms since it has appeared from interviews and document analyses that the companies work in similar ways. However, whether the result of the test of BIMeye can be applied to other cloud services is uncertain. The research’s limitation to disregard investment cost has restrict the study as it is a significant factor when implementing new technology.

  • 11.
    Blockgren, Håkan
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Illustrationsplaneförslag för Trönningebjär, Varberg2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    When the purpose is to create an illustration plan for a new neighbourhood there arelots of things to think about. In this report follows a description of the three differentplan modells SCAFT/TRÅD, garden city and ekological planning. SCAFT is aplanning model that were used in the 1970s. It contains proposals how to make thetraffic enviorment safer. TRÅD replaced SCAFT in 1982 and it contains also adviceshow to make the traffic enviorment safer. Garden city was an expression witch wasinvented in the late 1900th century by a man named Howard Ebenezer. This way toplan a city is about creating buildings in a reasonable size where every house has itsown garden. There is beyound this several other qualitys specific for garden citys.When it comes to ecological planning the lack of obvious choises of inspirationmodels is overwhelming. Many citys applys part of the ecological thinking but fewuses the whole concept.The territory that this report is about is geographicly oriented in the northeast ofVarberg in the outskirts of a village called Trönninge. The territory has earlier beanused for agriculture purposes. During the process of making the illustration planmodels over this property the topografic condition has been payed attention to. Allthree of the illustration planpreposals has been gone througt seperatly to acive thecaracter of its inspiration model. The area of a nursury school with a landrecomondation of 5000 m² exists in all three proposals.During the planning accordig to SCAFT/TRÅD adaptation of its traffic planningsolution has been used as far as it is possible. The final proposal contains a relativelyseparated plan where the different areas has its own caracter concerning buildingtypes. The illutsration plan proposal with inspiration collected from the garden citycontains a much more mixt building planning but it contains a more pronouncedquarter fealing than the other proposals. In the proposal inspierd by ecologicalplanning the point of the compass determined the location of the buildings. The bestlocation to receive the most sun as possible is east-west whith one of the buildigslongest sides facing the south.To be abel to understand the illusration plan proposals better they nead to bereachable when the description is overviewd. The area has a couple of geographicdeviation in form of two cliffs wich create intresting conditions and has been keeptintact in all three of the illustation plan proposals.

  • 12.
    Engdahl, Jenny
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Hedlund, Madeleine
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    BIM för Hållbart Byggande2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to facilitate sustainable building by the use of BIM. The goal is to determine which aspects of sustainable building, which can be analyzed mainly with BIM tools, but also other aids.

    The study is based on literature studies and interviews. The literature review examines aspects important for sustainable building by studying environmental certification systems applicable in Sweden, as well as the BIM tools available on the market to analyze these aspects. The literature also includes the concepts of BIM and sustainability in order to provide a clearer view of its meaning. The interviews have brought the study's overall understanding of the industry and guidance on the subject.

    The results are presented in a table, where the aspects relevant to sustainable building are listed. It can also be read which aspect the certification systems raise. Overall, the study shows 132 aspects distributed across seven areas: Site, Water and Wastewater, Energy and Pollution, Materials and Waste, Indoor and Wellbeing, City Design and finally Implementation and Management.

    The table also suggests BIM tools and other aids, which can be used in the analysis of a specific aspect. The study shows a slight majority of the aspects, 55 percent, are possible to analyze with BIM tools. The Site is the area with most aspects, which can be analyzed with BIM tools, 95 percent. And Materials and Waste resulted in least aspects with only ten percent. Overall, the study examined 35 different BIM tools. The aspects that require other means of analysis often generates important information about the project, from a sustainability point of view, and in many cases the information can be integrated in the BIM model manually. In the end, the project gets a packed BIM model with useful information, which follows the project all the way into management and later demolition and recycling.

    The study shows that sustainable building demands a holistic approach where several aspects should be considered in order to achieve sustainability. To analyze the aspects of sustainability requires that relevant and accurate information about the project be collected. Various proposals can be drawn and compared to generate the most sustainable option. A tool for this is BIM. BIM is defined partly as a method of work, building information modeling, but also as a virtual model, building information model. BIM facilitates the coordination of information gathering, both as a working method and a technical tool. This will contribute BIM to achieve the purpose sustainable building. 

  • 13.
    Friberg, Rebecca
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Rödfyr - En utredning avanvändningsområden och hantering med fokus på ekonomi och miljö2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Burnt alum shale is mining waste derived from combustion of the same rock. It exists in several places in Västra Götaland. Alum shale was previously used as filling but nowadays the use is limited thus the material is leaching heavy metals. The amount of waste normally put in landfills shall now be diminishing. Therefore the possibility to landfilling alum shale is limited. The purpose of this study is to increase the knowledge of how alum shale can be dealt with in an environmentally safe and economically beneficial way. The goal is to bring out suggestions for applications of use and ways of handling the excavations to contribute to a better environment and to achieve better financial conditions. By investigate what claims need to be achieved for the possibility of using Alum shale, useful areas of use and suitable management where brought forward. This study has been composed as a mean to get a bachelor degree in engineering, with the benefitial partner Skövde kommun.

    Method: Literature study, document analysis and interviews where used as research methods. Research on waste, alum shale and remediation techniques where studied in the literature study. In the document analysis, environmental study were analysed to retain knowledge of leachate. The interviews presented information of the authorities work with alum shale and experts’ suggestions of how alum shale can be used and handled.

    Findings: This study showed that there is other applications than landfills, and that there is methods to limit the leachate. If to be used, knowledge of the alum shale’s propensity of spreading due to stirring and relocation must be known. To inhibit leachate van be achieved by encapsulate the alum shale by waterproofing. This means that the alum shale can be used as a resource. Areas will be available for exploitation, it will not affect people in the surroundings, and the leachate to the groundwater will diminish.

    Implications: At minor sensitive land use, alum shale can be used as filling material, such as industrial areas and roads. This implicates waterproofing of the material. Asphalted surface, in combination of waterproofing the top surface and the vertical sides limits the leachate of metals considerably. The haul is often ruling the possibility to relocate the shale. If the alum shale, at disposal, could be used for filling purposes, the cost of purchasing new material, and outlet of new raw material does not need to burden the environment.

    Limitations: The alum shale studied is the one of Skövde County. The study should though be applicable to the whole of Västra Götaland. Not having the time to expand the interviews and include more people with research experience and expertise, is one of the limitations of this study. Also, carry out leachate tests could have contributed with more knowledge.

  • 14.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Lugna långgator2003In: Arkitektur: byggnad, interiör, plan, landskap, ISSN 0004-2021, no 6, p. 34-35Article, book review (Other (popular science, discussion, etc.))
  • 15.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Med ansiktet mot havet2003In: Göteborgs-Posten, ISSN 1103-9345, Vol. 03, no 26Article, book review (Other (popular science, discussion, etc.))
  • 16.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Tillbaka till framtiden2002In: Göteborgs-Posten, ISSN 1103-9345, no 7/13Article, book review (Other (popular science, discussion, etc.))
    Abstract [sv]

    Med anledning av Elizabeth A. T. Smiths bok Case study houses: the complete CSH program 1945-1966, om lösningen av bostadsproblem i södra Kalifornien.

  • 17.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Tillvalsarkitektur för bryggseglare2002In: Göteborgs-Posten, Vol. 06, no 20Article, book review (Other (popular scientific, debate etc.))
  • 18.
    Granath, Kaj
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Verifiering av krav och värden: Förstudie2015Report (Other academic)
    Abstract [sv]

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

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

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

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

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

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

  • 19.
    Hafezparast Moadab, Nima
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Smart lighting in apartments: ‘Energy and lighting simulation of different user scenarios’2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 20.
    Haglund, Petter
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Kallin, Rickard
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Informationsbehov ur en BIM-modell för användning i fastighetsförvaltning2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: As buildings become more complex, property management becomes increasingly complex. New demands are made on buildings environmental performance, risk management and new technology is introduced, which changes the property management industry. Problems with current property management methods are that the information for an efficient maintenance is difficult for the trustee, and the lack of interoperability between architects, constructor, client and trustee. The digital divide between trustees and other actors helps the trustee to reject the idea that BIM can be used in management. The aim for this rapport is to determine what information is to be required from a BIM-model to be to any use in the management process. Method: This work has been done through interviews and document analyses to answer the goal. Findings: There is a drive from trustees to switch to BIM, but the main obstacles are the lack of knowledge and influence at the start of construction projects, which means that the right requirements regarding the development and detailing of a BIM model can’t be set properly. Trustees know what information they need, but not how to set the right requirements without a specific standard. Implications: A lack of competence and knowledge about BIM at the trustees implies the need for a standard on the BIM-models level of detail and development for at all stages in the project, and all actors and researchers involved in the work. However, the trustees is aware of the information they need in their management system, which should be taken into account when a standard is being made. Limitations: The interview respondents came from different types of management companies, such as profit-making and non-profit-making, smaller and larger management companies, as well as trustees of residential, office, hall buildings and campus properties. Interviews with clients had helped make the work more relevant as it appeared from interviews conducted that the client plays a major role when demanding a BIM-model in a construction project. 

  • 21.
    Halilic, Jasmin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Magnusson, Elin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    INFLYTANDET AV CERTIFIERINGEN MILJÖBBYGGNAD INOM ENERGI FÖR NYBYGGNATIONER2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Global greenhouse emissions are a major issue for both the country and the world. Therefore, one has to find alternatives and solutions to produce renewable energy. A vision for renewable energy is to produce property-related renewable energy. The aim of the study was to investigate renewable energy for self-production in new construction, taking into account the certification for Miljöbyggnad to contribute to a more positive development in environmental work.

    Method: The study is a qualitatively oriented research. To succeed in answering questions and attaining the objective of the study, data were gathered through semi-structured interviews and document analysis. The selection of respondents was based on the professional role of the chosen company. The documents that were analyzed were a checklist and an internal manual available in the cooperating company as well as documents from the Sweden Green Building Council that deals with Miljöbyggnad.

    Findings: The work on renewable energy is something that is prioritized despite the high one-time cost, as there is long-term profitability. Communication is therefore important during the design process, but there is a lack of factors in the finishing work. You do not necessarily need to install electricity production facilities in Miljöbyggnad as it is only part of the requirement for the Gold level. From a sustainability perspective, one should nevertheless install it in new production and supplement it with measuring instruments for the plants in order to follow up the result.

    Implications: The economic aspect has a major role in the design as it can prevent sustainability solutions. Therefore, financial support in energy issues is a good incentive for companies. Miljöbyggnad is then a good support in project planning for new production since a certification process is not always necessary. To develop the employee work structure, knowledge transfer should be given more priority.

    Limitations: The study is limited to Miljöbyggnad where only energy indicators have been studied. The case study is limited to apartment buildings to reduce the scope of the study. The results and recommendations presented are generally valid for those companies that have similar working methods and routines.

  • 22.
    Hallner, Emelie
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Gunnarsson, Alice
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Kalkylskedets möjlighet till påverkan vid miljöcertifiering enligt Miljöbyggnad2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Environmental impact by humans has increased significantly, with the construction industry accounting for 40% of the world's energy consumption. In order to counteract this, the world's demands on sustainable buildings have increased. There are a number of environmental certification systems to help, where Miljöbyggnad is the most common in Sweden. The possibilities for influencing a project are greatest in the early stages, which also applies for environmental work. Therefore, the objective of this study is to investigate how a project classified according to the Miljöbyggnad Silver affects the bidding process for a construction project, in comparison with a similar project without environmental certification requirements.

    Method: A literature study which aims to form a theoretical framework, a document analysis of a reference project based on provided documents and semistructured interviews with calculation engineers at Serneke Bygg AB in Gothenburg.

    Findings: The results of the document analysis and interviews contradict each other to some extent. The document analysis shows several aspects that can be influenced by the calculators' work, while the respondents mention only a few differences between a project with or without certification according to Miljöbyggnad Silver. Respondents consider themselves lacking knowledge about environmental construction, while at the same time they are uncertain of how much that is needed. The document analysis, on the other hand, indicates that additional knowledge is required to ensure that the above mentioned aspects are taken into account in the calculation phase in order to ensure that the bid meets the requirements for Miljöbyggnad Silver.

    Implications: In order to ensure that the environmental building requirements are met in the tender phase, the recommendation is that the calculators, or one employee, will acquire knowledge about Miljöbyggnad. However it depends on the company's ambition regarding the accuracy of the tender if this will be implemented. Their attitude will have significance to how the work process and time aspect will be affected with the increased requirements of knowledge.

    Limitations: Only one type of environmental certification and one individual project have been selected. The study's goals are considered to be met, but the results and conclusions could have been further strengthened if more projects were studied and interviews had been conducted with the head of the department.

  • 23.
    Hansson Tengberg, Henrik
    et al.
    Jönköping University, School of Engineering, JTH, Industrial Engineering and Management. Jönköping University, School of Engineering.
    Adlerborn, Andreas
    Jönköping University, School of Engineering, JTH, Industrial Engineering and Management. Jönköping University, School of Engineering.
    Design of an Assembly System at AERCRETE INDUSTRIES2009Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The forming of an assembly system is a complex task, which should be considered as never ending. In order to successfully plan and implement an assembly system it is of vital importance that the obstacles and preconditions that have an impact on the system are identified and evaluated. This together with the necessary support activities and the attributes of the product to be assembled constitutes the starting point for the forming of the assembly system.

    The aim of this thesis is to link the theoretical findings with the issues stated above, and through this explain a best practice approach when forming the assembly system. The theoretical work aims at describing the nature and activities within assembly and manufacturing systems and explains these in three different levels of strategies divided into Manufacturing strategies, Layout, material flow and design strategies and finally Logistic, material handling and quality strategies. Then the obstacles and preconditions found are discussed and evaluated which set the basis for the forming of the assembly system and by linking these with the relevant theory, conceptual design proposals for the assembly system and the Logistic support system are formed.

    These are then evaluated and finally a proposal for the detailed layout of the assembly system is given. This proposal is then to be used as a guideline for the company Aercrete when forming their assembly system.

  • 24.
    Håkansson, Olof
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Käck, Simon
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Assessing the Value of BIM: A Contractors Perspective2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    BIM has been claimed to be a revolution for the construction industry and contractors are sure about the value that BIM use brings even though no one has been able to prove them. Multiple studies have been made by academics trying to create methods to either quantify or identify the value with BIM, however none of these methods are being used in practice. The purpose of this study is to increase the understanding of how contractors assess the value of BIM and the reasoning behind their assessments. This is done through nine semi structured interviews with respondents from three big sized contractors in Sweden. The data from the interviews was coded and thematically analyzed. It was concluded that depending on the respondents´ perception of BIM, the value of BIM was seen as different and subsequently both the performed and aspired assessment processes. Based on that, a matrix was created, outlining the two perceptions: BIM as part of something bigger i.e. BIM as a prerequisite or BIM as a mean in of itself. Furthermore, the matrix displays four dimensions of BIM assessment: the tangibility focus, the structured approach, the intangibility focus and lastly, the non-action approach.

  • 25.
    Ivansson, Signe
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Starck, Kajsa
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Operativa beslut inom byggsektorn med hjälp av LCC-utvärdering2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: There is a lack of knowledge of translating environmental cost to a monetary value. Sientcis has during the last decades studied and researched the field and developed several methods and tools within the Life cycle cost (LCC). The researchers are wondering why these are not used in the industry? The goal in this study is to develop a working method on how to build better for the climate using Life cycle assessment (LCA) and LCC.

    Method: The methods used to reach the goal of the study are mail interviews, observations, document analysis and literature review.

    Findings: The result of the study describes that municipal housing companies do not use LCC a lot. A case study is done on two houses in Kv. Vingpennan 2 in Kungsängen, Jönköping. The study presents, based on the case study a method for working with LCC with a environmental cost translated into a monetary value by using LCA.

    Implications: Since municipal housing companies at present do not work with LCC analyses to the extent that would be needed, some kind of demands from the municipality could be relevant. The construction sector is emitting a lot of carbon dioxide that is why some kind of tax should be calculated in the beginning of a new building project. There are many reasons why LCC is not so much in use. The uncertainty factors for estimating a monetary value for the environmental cost within the LCC might be a contributing factor. If the requirements that we propose would be put to the decision makers they would be forced to learn how to and work with LCC. The new ISO standard 14008:2019 could be the beginning of work methods for LCC where the environmental cost could be calculated.

    Limitations: The choice of methods and strategies for this study has been appropriate. The limitation is that the case study has only been studied over a shorter time of the studied projects time and that there is a lot of different programs for making a LCA and the materials in those programs is not always the exact same as in the real project. The uncertainties in an LCC could make the results variate a lot depending on who makes it.

  • 26.
    Jalilzadehazhari, Elaheh
    et al.
    Linnaeus University, Vaxjo, Department of Forestry and Wood Technology, Vaxjo, Sweden.
    Johansson, Peter
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, J.
    Department of Forestry and Wood Technology, Linnaeus University, Växjö, Sweden.
    Mahapatra, K.
    Linnaeus University, Vaxjo, Department of Built Environment and Energy Technology, Vaxjo, Sweden.
    Developing a decision-making framework for resolving conflicts when selecting windows and blinds2018In: Architectural Engineering and Design Management, ISSN 1745-2007, E-ISSN 1752-7589, p. 1-26Article in journal (Refereed)
    Abstract [en]

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

  • 27.
    Janhäll, Sara
    et al.
    Statens väg- och transportforskningsinstitut, Miljö, MILJÖ.
    Genell, Anders
    Statens väg- och transportforskningsinstitut, Miljö, MILJÖ.
    Jägerbrand, Annika K.
    Statens väg- och transportforskningsinstitut, Miljö, MILJÖ.
    Trafikinformation och miljöeffekter: beräkningar av omledningseffekter2013Report (Other academic)
    Abstract [en]

    This project aims at calculating the environmental impact of traffic with a new computational model. A list of possible measures to reduce environmental effects using traffic information is given, aiming at improving energy efficiency, air quality, noise, and environmental impact. The use of traffic information to control traffic is growing, especially in urban environments where congestion impacts trafficability, while alternative routes are available. In the road sector The Swedish Transport Administration usually informs the traveller directly, while in the rail sector information is directed to the train companies who then inform travellers/drivers. This affects the ability to manage traffic, and creates problems for the intermodal information. This report focuses on the urgent environmental impact of traffic, although a review of long-term effects are included. Only the change in traffic and driving style affects the calculations. Many environmental impacts are affected by traffic, such as air pollution, noise, greenhouse gas emissions, but also the barrier effects, light pollution, water pollution and soil disturbance in sensitive areas. Calculations with the model show how emissions are affected by driving mode, and how the population exposure is affected. The existing models are highly simplified and development in emission modeling, exposure, effects of exposure, and model implementation is essential.

  • 28.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Bruun, Charlotte
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Value Driven Briefing Process using ICT2013Conference paper (Refereed)
    Abstract [en]

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

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

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

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

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

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

  • 29.
    Johansson, Peter
    et al.
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Ryd, Nina
    Chalmers.
    Johansson, Bo
    Referat AB.
    Granath, Kaj
    Jönköping University, School of Engineering, JTH. Research area Built Environment.
    Byggherre-ICT: Förstudie om ICT-utveckling för byggherrefunktionen2009Report (Other academic)
    Abstract [sv]

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

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

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

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

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

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

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

  • 30.
    Johansson, Pontus
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Alvarsson, Daniel
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    MILJÖCERTIFIERING MED MILJÖBYGGNAD: FÖRSLAG FÖR LÖSNING AV PROBLEMET MED UPPFYLLNAD AV KRAVEN PÅ DAGSLJUS OCH SOLVÄRMELAST2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Society has become more interested in building with an environmental certification system, which leads to that building engineers are facing technical difficulties in both planning and production to meet the requirements. This thesis addresses the technical difficulties with solar heat load and daylight in the environmental certification system Miljöbyggnad. The purpose of this thesis is to “Illustrate how the demands of daylight and solar heat load in Miljöbyggnad can be solved”. Method: Qualitative data were collected through interviews to obtain answers concering the issues. The interviews essentially took place at each person’s company. High validity was achieved by the interview questions that were structured and linked to the issues and the purpose of this thesis. To increase the reliability, interviews were recorded and it was possible to find correlations between the answers. Findings: The BRONZE level in Miljöbyggnad is basically BBR:s requirements for most of the indicators. The SILVER level for the indicator daylight were supposed to be better than BRONZE and GOLD requires simulations and pleased residents. It is not possible to find requirements for solar heat load in BBR. When the requirements for this indicator in Miljöbyggnad was set, sun-blinds were used. There may be problems in meeting the requirements for solar heat load and daylight if the architects do not have the sufficient knowledge of Miljöbyggnad. The placement of buildings and windows are also problematic because the distance between the buildings can affect daylight problems. If there are a lot of windows in the south direction, the solar gain may cause difficulty to solve the requirements for solar heat load. The solutions this thesis submits are, to have a dialogue between the involving people in the projects to find pareto-optimal solutions. It is possible to reduce the require-ments for one indicator and raise the requirements for another to get the total building-rating as required. The requirements for solar heat load can be solved by using different kinds of shading devices. It is possible to change the type of windows, size of the windows and the amounts of windows. Implications: The conclusions are that the windows affect the indicators solar heat load and daylight very much. To solve the requirements and get a high rating on both indicators, it is appropriate to use any kind of shading devices. We also recommend that the architect calculates the indicators in detail before the tender document is ready, to avoid major problems. Limitations: To limit the extensive work it was necessary to focus on the indicators solar heat load and daylight in the environmental certification system Miljöbyggnad. The solutions for the indicators levels were not studied in details. The investigation method was limited to only use qualitative interviews. Keywords: Daylight, Miljöbyggnad, Solar heat load, Windows

  • 31.
    Junkers, Louise
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Backman, Anna
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Materialspill i byggnadsproduktionen: Waste of Material in the Construction Industry2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report deals with issues related to construction waste. Building material that has not been built into the project is defined as construction waste. Cost of construction waste amounts to 4-12 % of the total cost of the project. Moreover, cost of construction waste is 1-3 % of the production cost. The aim of this study is to increase knowledge about the main causes of waste within the construction industry. Measures in order to reduce material waste are analyzed. Contractors of building projects and construction workers should be able to apply methods and measures in order to reduce waste. Commissioners of building projects (the client) should be aware of amounts of waste and how this is affecting the price. Three research questions are investigated in this report:

    1. What are the causes of material waste during production?

    2. What material is generating the largest amounts of waste, and which type of construction waste is most costly?

    3. What are the measures of minimizing material waste?

    Methods used to investigate research questions include analysis of literature, interviews and four case studies. Three out of four case studies are performed on construction sites, where site managers are interviewed. The fourth case study is executed on a factory at Myresjöhus AB. Manufacturing of prefabricated modules is investigated. A prefabricated wall section with a circular window during line production is analyzed in-depth. The time taken to produce a single prefabricated wall unit is measured. In addition, amounts of material waste are collected and measured. Results showed that cost of waste amounts to 2, 4 % of production cost. Moreover, profit was 40 % of the selling price. Construction companies lack economic incentive to reduce waste costs because it is added to the selling price. Thus time becomes more important than reducing waste during production. The main cause of construction waste is lack of economic incentives to reduce levels of waste among construction companies. Secondary causes of waste are related to the efficiency of the production process.

    Common material waste during site-built construction is gypsum boards, façade panels, studs, joists, insulation, and concrete molds. Waste of studs and joists amounts to 5-6 %, and concrete waste is about 2 % for each truckload of concrete. During manufacturing of prefabricated housing, the largest amounts of waste are from paneling, lining board, insulation and gypsum.

    Changes have to be made to increase construction companies’ motivation to reduce construction waste within their production. The cost of waste must be visible. The client needs to be aware of costs of waste and waste management. Moreover conflicts concerning orders and material handling between contractors and subcontractors need to be solved. Moreover, construction companies need to increase the use of custom made and prefabricated modules. In conclusion the main reason why waste levels are not decreasing is because clients are not pressuring contractors to reduce levels of waste. The most common types of waste derive from materials that have low waste fees i.e. wood. Clients need to demand information about waste charges in order to motivate contractors to reduce their construction waste.

  • 32.
    Jägerbrand, Annika K.
    et al.
    Statens väg- och transportforskningsinstitut, Miljö, MILJÖ.
    Dickinson, Joanna
    Statens väg- och transportforskningsinstitut, Mobilitet, aktörer och planering, MAP.
    Mellin, Anna
    Statens väg- och transportforskningsinstitut, Transportekonomi, TEK.
    Viklund, Mattias
    Statens väg- och transportforskningsinstitut, Samhälle, miljö och transporter, SAMT.
    Dahlberg, Staffan
    Stockholm.
    Rebound effects of energy efficiency measures in the transport sector in Sweden2014Report (Other academic)
    Abstract [en]

    Rebound effects represent the difference between anticipated or projected energy savings and the real energy saving in relation to, for example, implemented policy measures aimed at improving energy efficiency. Rebound effects in the transport sector may counteract policy measures so that goals related to energy or emissions are not achieved, or achievement is greatly delayed. This comprehensive report examines the presence of rebound effects within the transport sector and while the aim was to provide a full review of the issue, for some transport areas it was not possible to find any studies on rebound effects. Those areas are identified as having knowledge gaps. We summarize the literature for rebound effects for passenger vehicles, technological developments, freight transports, public lighting, aviation, waterborne transports and for indirect, economy-wide effects, and also discuss rebound effects in aspects of environmental awareness and in the transport and community planning. The existing literature suggests that rebound effects exist to varying degrees and that there is a high risk of energy efficiency measures transferring transport energy savings into other transport modes, sectors or energy services. Consequently, rebound effects should be included when calculating whether Sweden will reach its climate and energy goals.

  • 33.
    Karlsson, Isak
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Rönndahl, Christoffer
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    A STUDY OF NATIONAL BIM GUIDELINES FROM AROUND THE WORLD DETERMINING WHAT FUTURE SWEDISH NATIONAL BIM GUIDELINES OUGHT TO CONTAIN2018Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The purpose of this study was to increase the efficiency of the planning stages in the building industry. The goal was to produce valuable information that will be useful in the future development of Swedish national BIM guidelines.

    Method: The study has been conducted by following the principles of content analysis. “Content analysis is a research method that uses a set of procedures to make valid inferences from text”. By searching for and analysing the content of national BIM guidelines, valuable information for future development of Swedish national BIM guidelines would be produced. The BIM guidelines had to fulfil two criteria in order to qualify for the study:

    1. Be a national BIM guideline.
    2. Have a version in English.

    Once selected, the guidelines were analysed using 11 topics, namely BIM execution plan, Level of Development, Format standards and their application – interoperability, accountability, filing, archiving, modes of collaboration, operations and maintenance, simulations, pre-qualifications, BIM functions through project phases. These were chosen based on works by R. Sacks, Gurevich, & Shrestha and Hooper.

    Findings: Out of the 81 BIM guidelines listed in the BIM guides project by BuildingSMART, 10 national BIM guidelines from 10 different countries were chosen for further study. NATSPEC from Australia, Belgian guide for the construction industry, CanBIM from Canada, COBIM from Finland, HKIBIM BIM project specification from Hong Kong, New Zealand BIM handbook, Statsbygg BIM manual from Norway, Singapore BIM guide, Level 2 PAS from the UK and NBIMS from the USA.

    All topics have a high level of inclusion, pointing to that the topics from Hooper and Sacks are relevant on a global scale. Pre-qualifications scored the lowest, and BIM functions through project phases scored the highest.

    Implications: Cover all 11 topics reviewed in this study. Avoid strict protocols with excessive level of detail, but rather formulate guidelines as frameworks, thus making them user-friendly and usable. Formulate guidelines so details may easily and logically be worked out in a BIM execution plan. Make a plan to keep the documents up to date.

    Limitations: This study only includes national BIM guidelines with English versions available. It has solely been conducted by document analysis and does therefore not provide much information on what current users of national BIM guidelines think of the guidelines reviewed, apart from what is mentioned from Hooper’s work. The score of each guideline indicate how much information it contains, and a high score may therefore not necessarily indicate it is the most user-friendly and readable guideline.

    Keywords: BIM guidelines, national BIM guidelines, BIM implementation

  • 34.
    Kebede, Rehel Zeleke
    Jönköping University, School of Engineering, JTH, Industrial Product Development, Production and Design.
    Developing Information Exchange Requirements for BIM-based Lighting Simulation in the Design Stage2019Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Easy and reliable exchange of data between BIM tools constitutes an important part of BIM-baseddesign processes. This is especially important for performance-based design as most performance simulationtools are evolving separately as a standalone simulation software package. IFC is a standard data model widelyused by the construction industry for digital data exchanges between BIM tools. However, IFC is developed tocapture a comprehensive data for all stages of the project lifecycle and carries a wide range of informationwhich are not of interest for performance-based simulations as well as lacks important required information.Consequently, there is a need to precisely define the required information and the responsible actors in eachexchange. The aim of this research was, therefore, to develop information exchange requirements with thecorresponding responsible actors for lighting simulations in the design stage. Developing information Exchangerequirements for lighting simulations requires experts. Accordingly, a qualitative research setup in the form ofa semi-structured interviews supported by a literature study and document analysis was conducted. The resultsshowed that lighting simulation is conducted in the two key parts of the design stage iteratively to optimize theanalysis result. This study has limitations concerning the absence of definition of technical terms, level of importanceof information and mere focus on the design stage. However, considering the audience of this studyto be experts in the area, and most information exchanges happen during the design stage, the findings promisepartial generalization to BIM-based lighting analysis in the design stage.

  • 35.
    Lennartsson, Erika
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, Eleonor
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    IMPLEMENTERING AV BIM VID MATERIALDOKUMENTATION: EN GRANSKNING AV MILJÖCERTIFIERINGS UTVECKLING2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The study relies upon the development of green buildings due to an increased level of acknowledgement of environmental impacts, caused by the building industry. Building materials are one big factor that have a negative impact on the environment. Building Information Modeling (BIM) are constantly being developed in the construction industry because of unlimited technology. The purpose of this study is to see a digitalization of documentation of materials by using BIM, and what consequences this meets regarding coordination.

    Method: The study used three qualitative methods: literature study, interviews and document analysis. The literature study is based on current research on the subject. An analysis consisting of documents including requirements from three green building certification systems has been done to present how they differentiate. The interviews complete the work with a practical point of view. It presents the work towards green buildings and on what level BIM may be included in the building industry. Respondents are people working with environmental questions, construction management and experts within the field of BIM.

    Findings: Green building certifications in Sweden are developing to be much more alike, because they are starting to relay on the same kind of requirements. This means there are not many differences when using one or several types of green building certification systems. The combination leads to effects of synergies. The results from Aspö Eko-logi shows that its time consuming and cost inefficient since documentation is required. BIM is established in the construction business, but not with regards to material documentation. Several issues regarding coordination could be solved through BIM. Research on BIM connected with green building certification has been studied on an international level, regarding LEED. This study shows how this could be adapted with Swedish environmental certification systems and also proves that the technology exists. The study presents benefits from using BIM with regards to coordination.

    Implications: Implications of the study shows that more than one environmental certification system on a project does not have big difference on the documentation of materials. The study creates awareness within the building industry regarding the potential of BIM and its implementation on environmental certification. A BIM-based method could cause benefits such as efficiency, improved coordination, more clarity and digital documentation.

    Limitations: The study examines a project, which is one of the first in Sweden that uses more than one green building certification system. The report does also only examine LEED, Miljöbyggnad and Svanen. The study has produced a possible BIMbased method regarding material documentation, which partly is based on interviews with persons in the construction process of a project. This will affect all the involved professions throughout the building project, none of which has been interviewed in this study. This makes the result not applicable to other professions. However, they will still be applicable to similar companies and projects within construction manufacturing.

  • 36.
    Lennström, Gustaf
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Kling, Daniel
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Klimatpåverkan av fackverkstakstolar i trä med fokus på koldioxidbelastning2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The purpose with this study is to analyze the environment impact of wooden trusses and find methods to improve the impact. The improvement proposals are given for the design and production phase. Method: This study is performed as a case study with a hall building placed in Jönköping municipality. The building has the external dimensions of 12 x 12 meters and a roof pitch of 15 degrees. The literature study was performed to find all theories as together with the empirics lead to this report results. The empirics has been collected from three interviews, constructions calculations, environment calculations and literature studies. Findings: With the collected empirics have three main roof trusses been tested. Warren are the truss type with the lowest emission, a total of 1245kg CO2eqv. An improvement of this truss was not found in the scope of the case study. Emission of Pratt-type was 1356 kg CO2eqv. This truss could be improved and the emission reduced with 46 kg CO2eqv. The Howe truss emitted was calculated to 1408 kg CO2eqv. With an improvement reduced this value with 55 kg CO2eqv. If an automatic cutting machine was implemented could the amount wood waste and thereby even the emission reduce. Those value are for all 11 trusses in this case study. Implications: The results set out in this report should demonstrate the potential for reducing carbon dioxide emissions from roof trusses. The reducing can be made of an improvement of the braces in the truss or better choice of the steel plates and the location of them. These findings reduce material usage and shortening the production time when the number of pressure points decreases. Reduce of emission can also been made in the cutting phase if automatic cutting machine been used to reduce the wood waste. A reduce of carbon dioxide need to be implemented otherwise it is a risk of serious disruption of the climate. Limitations: This study is performed as a case study with set conditions. Because of this could the result been different from other similar studies with other conditions. An LCA is complex and takes a lot of resources to make it complete. This is not possible in the scope of a master thesis and because of this have generalizations been taken to get a generally result. Keywords: LCA, wood, truss, steel, tube laser cutting and environment

  • 37.
    Linderoth, Henrik
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Isaksson, Anders
    Chalmers University of Technology, Sweden.
    Bosch-Sijtsema, Petra
    Chalmers University of Technology, Sweden.
    The perceived usefulness of BIM – The mediating role of practice2017In: Proceedings of the 3rd International Conference on Civil and Building Engineering Informatics / [ed] S.-H. Hsieh & S-C. Kang, National Taiwan University , 2017, p. 71-74Conference paper (Refereed)
    Abstract [en]

    BIM is claimed to be one of the most promising developments in the industry and many researchers and practitioners seem to agree on BIM’s potential applicability in- and benefits for construction. However, what the potential, or full potential is, is a bit unclear. As well as for other Information and Communication Technologies (ICT), an objective full potential for BIM does not exist due to technology and knowledge development. But is there some alternative concept instead of potential that better captures the technology’s enabling features and the interpretive dimensions? The concept of IT-affordance has been used to describe the appropriation of open ended flexible technologies and is described as: a potential for action that emerges out of the interrelationships among the technical features of a system, people’s ability and predisposition to use these features in certain ways, and the organizational context within which this takes place. The aim of the paper is to explore how the combination of technology’s features, people’s abilities and predispositions, and the organizational context influence the perceived potential for action (PPA). This is achieved by a survey to three different groups: practitioners with and without experience of BIM-use, and final year’s bachelor students in civil engineering. It is concluded that experience of technology has a positive impact on PPA, but a combination of experiences from BIM use in practice and circumstances in practice has a strong negative moderating effect on users PPA. Among practitioners with experience of BIM, the PPA is aligned with the project logic. This is, PPA is strongly predicted by perceptions of BIM as mean for supporting decisions for cost reduction, at the same time as lack of internal competence is perceived as a constraint.

  • 38.
    Lindqvist, Anna
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Wolf, Michaela
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Hur stort får vi bo?: Klimatpåverkan per person i Sverige2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The world is supposed to aim for a maximal global warming of 1,5 degrees Celsius which means an ecological footprint of 1,3-ton CO2e/person, year. How much does a sustainable living situation affect the living area per person? With the help of a typical Swedish house and a lifecycle analysis the living area is put in relation to the 1,5-degree aim. The purpose of this report is to investigate how the fulfilling of the 1,5-degree aim will affect the living area per person.   

    Method: The research approach in the report is quantitative were a meta study and a case study compose the research strategy. The data collecting methods are a literature study and a document analysis. Lastly the report uses calculations and lifecycle analysis for analyzing and compiling the results. 

    Findings: The goal value for the facility sector should come down to 0.3217ton CO2e/person, year. The typical-house uses 0,6637 ton CO2e/person, year. The results show an unsustainable situation from today’s living situation. It would take between eight to twelve people in the typical house to reach the goal value for the facility sector.  

    Conclusion and recommendations:  

    • Individuals cannot understand their own effect of their living situation when it is measured in CO2e/square meter. Lifecycle analysis, energy-declarations and other things relevant for the living situation should be measured per person who uses the space to give perspective on the climate impact.  

    • A tangible goal value for a sector is extremely hard to define and mostly up to the contemplators’ value and logic. The breakdown of the sectors needs to become clearer and more consequent for a better possibility to compare. 

    • We got knowledge from Birkved, Brejnrod, Kalbar och Petersens (2017) report of how both the construction and consumption stages needs to change and how that isn’t nearly enough. Clearer instruments towards electricity from solar-, wind- and hydro power for real estate owners in all sizes is a recommendation.  

    • It is clear how both individuals and companies need to open their eyes for what it is going to take and how far it is to reach a sustainable situation. Which means that politics need to take a much harder grip on the situation. Such as the demand on the environment declaration should have a maximum value.  

    Limitations: The lifecycle analysis has missing parts of the transport stage and the entire production stage.  

    PRINCE’s version of how to divide the sectors is from 2014 but uses numbers from 2016 over Sweden’s total CO2e emissions.  

    The facility sector contains more categories than what is taken into account in the lifecycle analysis 

  • 39.
    Martinsson, Emil
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Gradell Brandström, Sara
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Åtgärder för att energieffektivisera befintliga industrilokaler vid renovering av klimatskal2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    It’s necessary to make existing buildings more energy efficient in order to reduce the energy consumption in Sweden. There are also existing premises in the country which are in need of reduced energy consumption. Initiatives on energy efficiency takes place continuously. Particularly in residential buildings. When the energy consumption is to be reduced in industrial facilities, the focus is on reducing the consumption of the internal processes. The building envelope where the transmission is a major energy leakage is often forgotten. The purpose is to increase the knowledge of energy-efficient renovation of industrial facilities. The project Dalern is an industrial facility which was built in Åland in 1990. The building is used in a case study of improved technical solutions.

    Three following questions are covered by this report.

    Which methods are available to make the building envelope of industrial facilities more energy efficient?

    Which options are most energy efficient?

    Which technical solutions would work in the project Dalern?

    A literature study of common, energy-saving renovation techniques has been implemented to answer the questions above. Document studies have also been implemented on the project Dalern. The document studies have resulted in a case study where different actions have been calculated to see what potential there is to improve the energy efficiency of the building envelope.

    The result that has emerged from the work is that there are many different methods to improve energy efficiency, especially in residential buildings. The actions that provide the most energy efficient savings are primarily replacement of windows and doors as well as additional insulation of walls and roofs. In the case study, various actions have been calculated using hand calculations and with use of an energy calculation program called VIP-Energy. Structures, meetings between building components and the entire reference object’s energy consumption have been calculated. Heat transfer, thermal bridges and specific energy has been calculated with care since the report’s emphasis is energy efficiency. Other factors that has been taken in consideration are moist, air leakage and fire.

    The calculation in VIP-Energy has resulted in the reference object’s average heat transfer can be reduced by about 30 % when using the correct actions. The reference object’s specific energy consumption can be reduced by approximately 33 %. These reductions were affected only by actions that concern the building envelope.

  • 40.
    Nilsson, Per
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Norrman, Joel
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Förbättringsåtgärder i dagens livscykelanalysarbete: En studie av två programvaror2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: For newly constructed buildings, embodied carbon dioxide stands for an increasing share of the buildings climate impact, seen from a life cycle perspective. This due to improved building envelopes alongside better building service systems. Research shows climate impact due to embodied carbon dioxide may decrease if digital tools for analysis are used during the design phase. The aim with this report is to examine how these analyses are made and see how they can be simplified as well as more accurate.

    Method: To fulfil the aim of this report a literature review is used alongside semistructured interviews to map the use of LCA (Life Cycle Assessment) in order to gain knowledge and find opportunities for enhancement. A case study is performed on a building frame of concrete and steel to be able to compare and draw conclusions from two LCA-tools; Anavitor and Bidcon.

    Findings: The result shows increasing interest for LCA in the building industry and that LCA performed in the design phase often uses generic values. The terms and scope of a LCA needs to be determined distinctly regarding comparison of different software's in order to reach a result that is comparable. There is a need to depart from generic values and replace with climate data from manufactures to reach a result reflecting reality. This would be possible already in the design phase using objects in BIM supplemented with climate data from EPD:s in compatible formats.

    Implications: The buildings total climate impact during the life cycle are able to be displayed with LCA-tools. Using this as a natural part of the design phase, LCA-tools have to be compatible with the information contained in an eventual model. LCA-tools ought to include more information than just climate impact, other environmental data and economic information ought to be included to provide a better decision ground for the buyer. To increase the use of LCA in the building industry, a stronger incentive is needed. The buyer should be required to perform an environmental declaration of thebuilding. In a further step legislation regarding a building´s environmental impactsimilar to the rules found in the Swedish building code regarding specific energy usewould be fitting. The accuracy of the programs mostly depends on the input data,namely quantities, often retrieved from a model. Requires EPD:s accessible in formatsupported by digital software’s in order to reach that information more easily. LCA tools ought to be used early in a project, facilitate eventual choices. At the same time, the user should be able to use product specific EPD:s in an early stage to compare different manufacturers and solutions.

    Limitations: This paper is limited to the two software’s Bidcon and Anavitor, and how they differ regarding calculation methods and functions. It's also limited to only take the buildings' embedded materials into account.

    Keywords: "Embodied carbon dioxide", "Embodied energy", "carbon foot print","LCA", "Life Cycle assessment", "Climate impact", "Climate data", "BIM", “Anavitor,“Bidcon”

  • 41.
    Nisar, Muhammad Atif
    et al.
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Shahid, Mahfooz Ahmad
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Ghasemi, Banoosheh
    Jönköping University, Jönköping International Business School, JIBS, Business Informatics.
    Green IT Initiatives in organizations for achieving Environmental Sustainability; integration of Change Management and Organization Culture2011Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The issue of environmental sustainability is rising nowadays, which made the organisations to survive the planet. Accordingly, the governments are giving support to organisations for taking steps to achieve the environmental sustainability. To achieve the environmental sustainability, it is needed to bring change in organisations. Besides, Information Technology plays a significant role to develop novel processes and technologies to control the environmental loads for achieving environmental sustainability. This study is based on three mainstay concepts: Change Management, Green IT, and Organisational Culture. This research is intended to identify Green IT initiatives to achieve the environmental sustainability through change management and organisational culture in the organisations. A change management model is ultimately presented in the analysis, which describes the process of change management within an organisation based on the three main concepts mentioned above.

    This study is an investigation based on literature reviews and two case studies (Tetra Pak (Pakistan) and Panasonic (Sweden)). Case Studies have been carried out to verify the commodity of change process model (theoretical framework) and change management model. The research is also aimed to find, if the investigated organisations ultimately capture the targeted result, when willing to bring Green IT in their organisational systems.

  • 42.
    Noori, Mustafa
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Davidsson, Jesper
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Nytta vid tillämpning av miljöcertifieringssystem för miljön och företag inom industriellt byggande: Certifiering av industriella småhusbyggnationer av trä2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The purpose of this work is to make a proposal for an alternative environmental certification system that fits better for industrial building of wooden houses and also describe the benefits the system has for both the environment and industrial construction companies.Method: The work is based on a qualitative approach, using the methods literature study, interviews and document analysis. A case study has been carried out on a planned project where a theoretical certification of environmental construction has been applied. This has been done through interviews and literature studies. In order to carry out the case study, a number of documents have been collected from Götenehus AB and analysed.Findings: The result reports the differences between the four systems when it comes to technology and administration. The authors then took consideration of relevant factors and conducted interviews in the choice of Miljöbyggnad for the system that fits better for industrial single-family-building companies. The outcome of the case study, that carried out on the construction project Riddersholm, shows the benefits for the environment a theoretical application of Miljöbyggnad has, for example reduced heat power requirements. The study also shows the benefits for industrial single-family-building companies, such as strengthening the company's brand.Implications: With the help of certification systems, the process to deal with environmental issues gets easier. The introduction of this can lead to many benefits for companies, as they may turn outwards and can prove that they have an environmental thinking from start. All companies do not have the skills in the field and therefore need a soft start to get into it.Limitations: The work has been limited to the four most common systems in Sweden. A case study has been confined to Miljöbyggnad energy area, which includes the first four indicators.

  • 43.
    Nylander, Joacim
    et al.
    Jönköping University, School of Engineering.
    Sandström, Hugo
    Jönköping University, School of Engineering.
    Klimatförändringarnas inverkan på inneklimat och energianvändning i passivhus2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The purpose of this study is to contribute with knowledge about how the warming effects of climate change may affect indoor living standards, considering that we are already living with some over-temperatures during the summer time. The specific aim is therefore to show how thermal climate in warm passive houses will be perceived, and how specific energy consumption will be affected, within the near future in southern Sweden.

    Method: To order to achieve the aim, a specific scenario of future temperatures had to be defined. Official climate data for the year 2050 in Gothenburg was collected and compiled. A certified passive house was theoretically exposed to the expected future climate and indoor temperature as well as energy consumption was calculated. Calculations were made using the energy calculation software BV2 for reference conditions and adaptions of both climate as well as technical solutions for greater thermal comfort.

    Findings: A climate scenario for Gothenburg during year 2050 illustrates that the average year-temperature increases from +7.7°C to +9.9°C. The largest change can be observed during the winter, with an increase peaking at +2.5 ºC. The results show an increase from 65 to 107 number of days during the year in which the studied passive house has an inadequate indoor temperature, as a consequence of over-temperatures. One method for thermal climate enhancing, using a combination of sun screening and air conditioning powered by solar cells, showed having good impact without considerably affecting the specific energy consumption.

    Implications: In a passive house without air conditioning, the thermal indoor climate will reach an unacceptable level for the tenants, more often in the year 2050, than during the reference period, due to warmer outside temperatures. The method which has the smallest impact upon the energy consumption is sun screening, while air conditioning is the most effective, but also very energy consuming. In order to optimally conserve the thermal indoor climate without decreasing the free energy during the winter, one should install both sun screening and air conditioning in their passive house.

    Limitations: The result is applicable on passive houses within climate zone III, but the general conclusions made applies for all passive houses in Sweden. Using different methods of calculating the indoor temperature may result in variable results.

    Keywords: Climate change, Passive house, Indoor climate, Thermal comfort, Energy consumption

  • 44.
    Odisho, George
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Johansson, Martin
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Miljömedvetenhet i Partneringentrepenader: En studie om hållbara entreprenadformer2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The construction industry uses large parts of the world's resources, of the total emissions from the sector, construction activities account for about 40 percent in 2016 and property management heating for about 40 percent. The total amount of waste increased between 2014–2016 and accounts for 31 per cent of all generated waste in Sweden. In 2016, about 50 percent of the sector's waste was recycled. The different types of contracting in the market contribute in various ways to competition, but how much do they affect the environment and the work to achieve a better and more sustainable environment. Partnering Contracts is a form of collaboration that is often used in major projects between builders and major contractors, in order to work together towards common goals.

    The aim of the work is to analyze whether the partner form is a better alternative from an environmental and sustainability perspective through a comparison between the turnkey contract form and the partner form in the construction market, and is to give suggestions and measures that contribute to making the environmental and sustainability work a priority part of a partnering contract?

    Method: To answer the question, interviews with people with experience of partnering contracts have been carried out. The interviewees worked at Peab and have long experience of the construction industry.

    Findings: With the chosen methods, partnering contracts have been analyzed and evaluated. The results of the study have shown that partner contractors have better conditions for sustainable environmental work. The contract form is not as restrictive as the traditional contract form. Those who work with partner contractors enjoy the way they work and see that there is potential to develop the environment and sustainability work. With education, new communication tools, engaging those involved in the environment and sustainability issues with reward systems and seeing the whole of the project not just a few parts.

    Implications: By analyzing how the environment and sustainability work is done on partner contracts and the traditional contract forms 2019 and then comparing it with previous environment and sustainability work. The authors have found that partnering contractors have better conditions for developing the environment and sustainability work.

    Limitations: The work does not cover the situation outside Peab's project, since the study was carried out in collaboration with Peab. Investigations have not been done on other types of contracts than those mentioned in the study. This is because the data collected comes mainly from interviews and the projects Peab runs.

  • 45.
    Olsson Hartmann, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Svensson, Filip
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Effektivisering av LCA med hjälp av BIM2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis concerns how Sweden relates to life cycle assessment (LCA) in the construction process. LCA means analyzing a products impact and the analysis includes the whole life span of the product. A building has a high complexity and the combination with its unique shape will make the LCA more comprehensive, unlike e.g. aluminum cans. Recently there has been a development of a working procedure in the construction industry. This method is called BIM which means building information modelling and the key thing is to gather all the information of the building in the same model. The benefits by using BIM are that a lot of double work is minimized and different involved stakeholders can take part of the model and work in the same model. The purpose with the thesis is to contribute to a more sustainable design through increased use of LCA. The aim has been to study the opportunities of integration between LCA and BIM, and also study the opportunities of making the procedure more efficient. Firstly a study has been done concerning whether how LCA is performed in Sweden and what problems there are concerning the making of a LCA in the construction sector. Next step was to find the benefits with BIM that reduce the problems. The thesis questions have been answered with mainly a literature study and a few interviews. The last question, considered as the main question, has also been answered with a case study. The case study includes an attempt of making an LCA on a part of the building of Jönköping University, School of Engineering by using BIM. The result shows that there is barely anyone that is performing LCA on buildings in Sweden today. LCA is performed when there is a demand from clients, but it is rarely. The knowledge of LCA is therefore poor and there are no standard methods. The results from the analysis of buildings today are not reliable. BIM facilitates the performance of LCA in several ways, but the problems with unreliable results remains. Linking the analysis to BIM makes an awareness of sustainability in an early stage, which can be considered more important than getting a correct result. BIM gives us the opportunity to save time in a time consuming procedure and hopefully contributing to a reliable result. This could be seen as a step in the right direction towards a sustainable development. 

  • 46.
    Palm, Carl-Fredrik
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Tell, Filip
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Sekely, Adam
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Undersökning av avfallshanteringssystem: För ett nyexploaterat område i Ekhagen, Jönköping2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Outside of many Swedish households today, you will find a typical green wastecontainer. This container has not changed since its introduction, despitecomplaints about foul-smelling and its impractical system. Even if the system usedtoday, still is the most optimal choice, there is a lot of newly developedalternatives out there.Its purpose is to get a broader perspective on how a waste management systemcan be developed into a working, land efficiently and aesthetically pleasing systemof humans and the environment in a small residential area.The authors treat the residential area of Jära, Ekhagen, in Jönköping, which ismanaged by JM AB as a problem area in regards to waste management.The issues raised by the authors are the different waste management systems usedin the corresponding areas of the world, how to apply technical andenvironmental as well as the waste management facilities from financial aspects.In the process, the methods used were literature reviews, case studies and aninterview. The case study was done through a modeling of waste managementsystems in the area Jära and an interview was conducted with the company Envacworking with vacuum systems. Studies have been made by different systems n theareas around the world.The results show that using directives and guidance will reduce the environmentalimpact done without replacing the traditional system. EU’s waste staircase is amethod with households to think more about the waste problem.The traditional system creates a poorer hygiene, road safety and landdevelopment. Waste containers are picked up at the households after being used.Traditional systems can also be applied in the area with a common collectionpoint that takes care of household waste. The system solves the problem of landdevelopment, but more than JM's approach on a distance of more than 50 metersinto the waste bin.Through the use of a MRF facility the waste is managed in mixed fractions andrecycling center can be removed. This system does not solve the problems ofhygiene, land development and road safety.The optical system includes a major source separation at home by using differentcolored bags, which are then sorted optically. The recycling center can beremoved, but the problem of hygiene, land development and road safety remains.The vacuum system uses the chute instead of disposable containers, which thensends the waste to a collection point via piping. The system creates good hygiene,land development and road safety within the area.The traditional system with a collection point has a lower cost than the vacuumsystem, MRF and the optical system, which means that the traditional system ofcollection point is most relevant to the field Jära.

  • 47.
    Persson, Simon
    et al.
    Jönköping University, School of Engineering.
    Krantz, Edwin
    Jönköping University, School of Engineering.
    Energieffektivisering med fukthänsyn av ytterväggar på plankhus2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: Villas built before 1960 represent around 45% of the dwelling in Sweden. Since the average U-value in their walls is around 0,5 W/m2K, there is a great concern to improve  these values. The Swedish government's goal is to reduce energy intensity in the country by 2020 by 20 % from 2008’s values. The aim of this study is to reach phase renovation proposals taking into account energy and moisture on houses consisting of standing shelves. With this, the authors wish to contribute and encourage renovation of existing villas, which in turn can lead to reduced energy consumption.

    Method: This work is based on a case study of a 1940’s wooden house located in Skillingaryd. Measurements and parameters have been taken in order to calculate the house's specific energy usage in the BV2 analysis program. Document analyses and interviews have been used to get a deeper knowledge of existing conditions, and to suggest ways to utilise the material that the market offers nowadays. This should serve the purpose of creating as energy-efficient phase resolution as possible.

    Result: The study shows that an outer wall of a massive wooden house should keep a U-value of 0,15 W/m2K to meet the specific energy consumption of 90 kWh/m2 and year, when the other house is additional insulated. The study presents two refurbishment proposals supported by interviewed experts in the insulation and consulting industry. The first option leaves large parts of the old facade untouched, adding new insulation layers of the desired thickness. The second option advises to tear away all old panels into the shelf frame, thus re-building with new materials. Both proposals address the issue of how the facade should be refurbished in order to make it moisture proof. They mostly solve the problem by refurbishing it outwards and by eventually placing a vapor barrier for a maximum of one third in of the insulation. This vapor barrier may or may not be a watershed according to the experts. Some think it is unnecessary when the plank is considered sufficiently diffusion-proof; some believe that it will help to identify where a possible condensation might occur in the wall. 

    Consequences: The study shows that by means of additional insulation, BBR 24 recommended values ​​can be achieved for an exterior wall while keeping the façade moisture proof. One strength the study shows that the two reported renovation proposals achieve the same end result, although the interference on the facade varies in size. Therefore the authors of the above study recommend to tear down the old facade and build a new control wall with a finishing facade disc. This is when you face a vapor barrier on the façade with a vapor barrier that is laid on the old baselayer of the roof. Then a new roof construction could be built up with roof beams, shavings and roof tiles. As a result, a windy, yet proportional, construction can be created.  

    Restrictions: The study assumes that the entire house would be refurbished in order for the specific energy use to be possible. Furthermore, the work is based of a shelf shelter located at a particular geographical site. Due to this, the study also offers suggestions on wooden facades only. 

    Keyword: Plank body, Phase renovation, Specific energy use, diffusion, convection, U-value, air density.

  • 48.
    Rindberg, Marcus
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    Zohoorian Izadpanah, Soroush
    Jönköping University, School of Engineering, JTH, Civil Engineeering and Lighting Science.
    En jämförelse mellan användning av prefabricerat element för tilläggsisolering eller ombyggnation av ytterväggar ur ett miljö- och ekonomiskt perspektiv2019Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: The goal of this study is to conduct an LCA and LCC analysis of an additional insulation panel and a sandwich panel, to see which panel has the most benefits regrading environmental effects and economical effects. The purpose of this study is to conduct a research regarding the economical and environmental effect a refurbishment on the exterior walls of an industrial building, is it more beneficial to add insulation to the existing walls or remodel the exterior walls. The European Union has sat a target to reduce the emission of the greenhouse gases within all sectors including the construction sector. The goal is to reduce the emissions by 80-95 % by the year 2050, calculated by the emission rate from the year 1990. Approximately 20 % of the heating produced within in a building seeps out from the exterior walls, this adds to the importance of optimizing a buildings insulating capabilities. The study can be broken down in to three subcategories. (1) How do you add insulation the exterior walls of an industrial building? (2) Which is more economically benefitable, the reconstruction of existing walls or using prefabricated panels with common goal of adding insulting to an existing industrial building. (3) Which alterative has more impact on the environment, using prefabricate panels or reconstruct the existing walls of a building.

    Method: Methods used to answer the question above include a literature analysis, a document analysis and a case study with the purposes of conducting a life cycle analysis and life cycle cost analysis.    

    Findings: The results of the study points towards that insulating on externally was a much better option in our case study, it reduced the chances of having to deal with both thermal bridges and damages caused by structural dampness in the walls. The results from the LCA an LCC analysis showed that the additional insulation panels had a significant advantage. When using the additional insulation panels the overall cost of the project was reduced by 30,3% and Carbon dioxide emissions where deducted by 50,8% in comparison with the sandwich panels, when both alternatives had a combined u-value of 0,16 W/m2K.

    Implications: The study shows the importance of conducting an LCA and LCC analysis in the start-up process of project, to determine which alternative are more beneficial for the project and the environment. The study also shows that with a relative low investment and environmental impact you can improve the U-value of a building

    Limitations: The study was focused solely around industrial buildings and the study is limited to the exterior walls. No other building components where taken in consideration.

    Keywords: Insulation, LCA, LCC, Exterior walls, additional insulation, industrial buildings

  • 49.
    Ringebrant, Oskar
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Kask, Elin
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    CEEQUAL - Ett miljöcertifieringssystem för anläggning: Implementering, attityder och resurser för svenska entreprenadföretag2017Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Purpose: CEEQUAL is the only environmental certification system adapted for civil engineering that is used in Sweden. Although the system meets no competition, the demand for it is low. In order to understand how working with CEEQUAL developed from the translation of the manual to Swedish in 2014, the aim was to assess the climate for future CEEQUAL projects by examining the entrepreneurship’s attitudes, resources and implementation of CEEQUAL.

    Method: Interviews were conducted with respondents from four major construction companies in Sweden, where two companies previously performed CEEQUAL certified projects and two did not. The same questions were asked at each interview but follow-up question varied depending on the respondents’ answers. Each interview was recorded, transcribed and verified by the respondent. The interviews were supplemented with literature studies to get an even more comprehensive picture of what working with CEEQUAL looks like.

    Findings: CEEQUAL is a good certification system that contributes to various forms of development within all represented companies. LCA is a contribution that will probably be used for more and more projects. When it comes to CEEQUAL, it is often pointed out that CEEQUAL would be adapted to Swedish conditions. A translation was made but adapting CEEQUAL more to Swedish laws and working methods has not been possible. This because the CEEQUAL organization has been clear about the guidelines to be followed in CEEQUAL certification, which must be respected if CEEQUAL is the system to be used.

    Furthermore, the contractors consider that higher environmental requirements must come from the clients. In parallel, a sharpened legislation or environmental policy must be developed by the state to guide procurers in public procurement in order to achieve better environmental work.

    Implications: CEEQUAL is a well-functioning environmental certification system and by signing into it, you can find parts that can contribute to the business. It is apparent that no action is taken than law requires, so the state can contribute by tightening the laws and regulations that exist. Entrepreneurs want to be challenged and look forward to higher demands being requested. Increased communication between actors is a key factor in ensuring that sustainability work continues to evolve.

    Limitations: This paper has only included entrepreneurs, as the purpose has been to reflect their future with CEEQUAL. Although there are more certification systems regarding civil engineering than CEEQUAL, they are not included as they are not used in Sweden. A survey could have provided a broader scope for the work, but not the depth required to answer the questions.

  • 50.
    Sandberg, Martin
    et al.
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    Bengtsson, Petter
    Jönköping University, School of Engineering, JTH, Civil Engineering.
    VÄGTRAFIKBULLRETS INVERKAN PÅ UTFORMNINGEN AV BOSTADSBYGGNADER I STADSMILJÖ2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The public interest in central living in today’s cities has led to an increasing effect of traffic noise pollution, and today 20% of the inhabitants in Sweden suffer from noise a level that exceeds the limits. At the same time the traffic keeps increasing, and recent researches shows that traffic noise pollution and several of today’s most common health issues are connected, for example, reduction of performance, sleeping issues and cardiovascular diseases. For this cause rules, guidelines and environmental goals has been developed, as well as software’s which calculates the levels of pollution, all this to investigate and improve the environment. The guidelines say that the average sound pressure level shouldn’t exceed 55 dBA over 24 hours of the façade, and the maximum level shouldn’t exceed 70 dBA. Today’s issue is that the guidelines isn’t legally binding and therefore they don’t have to be fully achieved which can led to confusion and unfair interpretations in the matter of a building can or cannot be built according to the limits of traffic noise pollution.

     

    The intensions of this report are to improve the urban environment regarding traffic noise pollution and to increase the understanding and knowledge how this issue affects urban areas. The report will also investigate and compare two different calculation methods for traffic noise pollution, the Nordic propagation method and the Nord 2000.

     

    On this basis a literature survey has been done regarding the noise pollution issues in our cities with its rules, guidelines, objective goals, measures and the two different calculation methods. Investigations of different shapes of a building has been done in combination with the software for calculation of road traffic noise Soundplan, and a case study of a site which is located in the centre of Jönköping. The workflow has been reversed from the “normal”, were the building were designed after the limits of the noise levels were investigated. This resulted in a residential proposal which is optimized from a traffic noise point of view, and uses its own body as a shield. The condoles are directed away from the source of noise and the parking space are placed towards the roads. The final result has been analysed with both of the calculation methods, were a slightly differentiation between the methods can be seen. This is causes by the way the calculation methods deal with information and the differentiation in the calculation methods.

     

    The conclusions from this report are that the traffic noise pollution is one of our major health issues which still are increasing. The main problem in this is that there’s several unmeasurable parameters which influences the way an individual experiences the sound environment, which contributes to the difficulty to establish a proper regulations and standards. Regarding the calculation methods there is issues to use Nord 2000, because the method requires large amounts of information which can be difficult to access. At the same time the Nordic propagation method can show incorrectly results because it hasn’t the same ability to adapt to the specific conditions at each location.

12 1 - 50 of 55
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf