Malmö University Publications
Change search
Refine search result
12 1 - 50 of 60
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • 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.
    Ala-Eddin, Israa
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Shikha, Rima
    Malmö University, Faculty of Technology and Society (TS).
    Jämförelse mellan hybridelement och halvsandwichelement2023Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To consider the climate and strive to reduce greenhouse gas emissions is a current issue in today's society. The outer wall hybrid sandwich wall is a new, more environmentally friendly wall type that is being researched for use in the market. The purpose of this study is to analyze whether the hybrid sandwich wall is a better choice for future construction projects and to compare it to the semi-sandwich wall. The study is limited to examining LCA module A (A1-A5) and module C (C1-C4), as well as how the pile foundation is affected by the use of the hybrid sandwich wall.

    To conduct this investigation, literature studies, quantitative, and qualitative methods were used. The quantitative method involved climate calculations performed both manually and using the Bidcon and BM Tools software. With the assistance of the company Sigma Civil, a reference project was provided where the hybrid element could be tested. The qualitative method consisted of an interview study with Håkan Arnebrant, Sales Development Manager at Metsä Wood, who works with Kerto LVL and has background information on the hybrid sandwich wall. The software used to conduct the study was FEM-Design for load calculations, BM and Bidcon for LCA analysis.

    The results of the study showed that the LCA analysis of module A indicated a reduction in carbon dioxide emissions by 28 000 kg Co2e when using the hybrid sandwich wall. For module C, emissions decreased by 1 000 kg Co2e. Additionally, during the element exchange, the self-weight of the outer wall decreased by 1,8 MN, which corresponded to the replacement of only six out of the total 27 piles along the facade with RD140. This resulted in a reduction of carbon dioxide emissions by only 1 600 kg Co2e for module A and 20 kg Co2e for module C. The cost savings for piles after the element exchange amounted to 15 600 SEK, and the total cost savings for the entire building during the element exchange were 235 000 SEK. Despite this, the hybrid sandwich wall also contributed to a 9% lower energy consumption. However, in conclusion, the hybrid element is considered a better, more environmentally friendly alternative for future construction projects.

     

    Download full text (pdf)
    fulltext
  • 2.
    Alkhatib, Yazeed
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Alshammaa, Mohammad
    Malmö University, Faculty of Technology and Society (TS).
    Användningen av BIM-verktyg och Lean-principer för optimerade tidsplaner i byggprojekt: En fallstudie av implementering2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In the construction industry, delays in project deliveries are a common occurrence. In order to overcome this problem, a developed and accurate schedule is required which is followed by all parties concerned. Currently, traditional activity-based Gantt charts are primarily used. However, another scheduling method based on location shows promising potential for effectively managing delivery delays but has not received the same attention. Line of Balance (LOB) is a method within location-based scheduling (LBS), where the location is treated as a dimension in the production process, and it has proven to be a more efficient alternative than the Gantt chart. BIM tools, such as Vico Office, have proven effective in improving and streamlining LOB schedules by providing specialized tools that facilitate the creation of such schedules. Additionally, the use of BIM tools can facilitate the application of Lean thinking, which helps improve workflows.

    This study investigates how schedules are affected by the transition from activity-based to location-based schedules using the BIM tool Vico Office. Furthermore, it examines how the application of Lean principles such as “Visual Management” and “Reduced Batch Size” affect location-based schedules. The Gantt chart analysed in this study belongs to the construction company NCC and contains detailed information on the activities in House A.

    The LOB diagram generated by Vico's Schedule Planner aligns with the Lean principle of “Visual Management”. It has demonstrated an improved ability to detect empty areas, collisions, and discontinuous activities compared to Gantt charts. Additionally, the Lean principle of “Reduced Batch Size” was utilized to minimize waiting times between work groups. Despite the project exceeding the allotted time by two weeks, the conversion resulted in a location-based schedule that promoted continuous workflow, enhanced efficiency, and improved monitoring of the construction process.

    Download full text (pdf)
    fulltext
  • 3.
    Allar, Hugo
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Brüggemann, Asterix
    Malmö University, Faculty of Technology and Society (TS).
    Attityder och förväntningar på arbetsberedningar: En jämförande studie mellan olika aktörer inom byggbranschen2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Challenges exist within the construction industry in optimizing communication and achieving effective collaboration and consensus within projects. This is due to the frequent involvement of temporary organizations, which make it difficult to establish standards and communication networks. Addressing the improvement of communication and consensus is therefore a crucial subject to explore. One tool used during production to enhance efficiency and planning iswork preparations.

    The purpose of this study is to investigate the current methodology of work preparations inthe construction industry, with a particular focus on how these methods are perceived and implemented by different stakeholders. The research examines how companies engage withwork preparations, the attitudes of various professional groups towards work preparations, and strategies for improving consensus specifically related to work preparations.

    According to the results of the study, the methodology for work preparations in most casesfollows the following general procedure: The work preparation is created by subcontractors when a new work task is to be started. The work preparation is based on a template and must be approved by the main contractor's installation coordinator or BAS-U before the work task is allowed to start. Furthermore, the subcontractor conveys the work preparation to the workers who perform the work.

    The study also revealed that perceptions about work preparations differ between different professional groups in the industry. Most people think it is a good tool, but some consider it too time-consuming. The production management occasionally considers work preparations to be inadequate, while workers and subcontractors think they are too extensive. Furthermore, the perception regarding work preparations differs slightly between the professions as to whythey are made. In many cases, they tend to primarily focus on safety analysis and risk assessment.

    Finally, some suggestions for improving coherence around work preparations are presented, including: more involvement of more stakeholders, education, workshops, and clearer contracts.

    Download full text (pdf)
    fulltext
  • 4.
    Alwal, Mohammed
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Ludvigsson, Sten
    Malmö University, Faculty of Technology and Society (TS).
    Mer biogas för en miljövänligarebyggindustri: Analys av biogas som alternativ bränsle vid tegeltillverkning2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In Sweden today, the construction- and building industry sector stands for 20% of the total national carbon dioxide emissions. Therefore, the need for new innovations and methods for lowering CO2-emissions for the industry overall are highly sought after. Since the 1930s, the use of bricks for the facade of buildings have increased in Sweden. Traditionally masonry have a long durability and require less upkeep during its lifecycle. However, the process of making bricks consumes very high energy levels since the bricks need to be burnt at high temperature. Historically the fuels for the ovens have consisted of fossil fuels, more specifically natural gas and petrol. This study aims to analyze the possibility, the benefits and the challenges that exist when swapping the fuel from fossil to biogas. The methods that have been selected to help guide the study to its results are both qualitative and quantitative. The qualitative part is performed with literature study and interview with experts in the sector of brick. The quantitative part is made using a method called LCCO2 for evaluating emissions and LCEA for energy demand. The study finds that using biogas could reduce the CO2-emissions with up to 80%. With the help of interviews, it also concludes that the most significant factors hindering the use of biogas is the price increase that comes with biogas and hence the costumer not wanting to pay more for it. Even though the benefit for the environment is evident, there is a lack of knowledge from the costumer about these benefits. To help the readjustment from fossil fuels, the study recommends management accounting to decrease the price of biogas and encourage competition.

    Download full text (pdf)
    fulltext
  • 5.
    Andersson, Jonas E.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Legato i arkitekturen för användarvänlig byggd miljö2022In: PLAN, tidskriften för samhällsplanering, ISSN 0032-0560, no 7, p. 42-47Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Tillgänglighet och användbarhet i arkitektur och byggd miljö är avgörande för jämlik stadsplanering. Jonas E. Andersson, arkitekt och docent i arkitektonisk gestaltning tittar på olika sätt som planerar kan skapa en mer användarvänlig miljö och visar på några historiska misslyckande som lett till mer otillgängliga byggnader och städer. Kan legato, en italiensk musikterm för en slät övergång, hjälpa framtidens planerare att tänka holistiskt i sitt planerande för tillgängliga och användbara byggda miljöer?

  • 6.
    Andersson, Jonas E.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Relinquishing power in the definition of housing qualities: universal design thinking or mere rationalisation?2022Conference paper (Refereed)
    Abstract [en]

    It is still an open matter whether qualities in housing are the outcome of architects’ artistic ambitions in answer to the users’ needs or whether it is the meticulous realisation of users’ demands and needs that national authorities stipulate. Since 2020, the Swedish building legislation is undergoing a historical change. The Swedish Government has assigned the National Board for Housing, Planning and Building to revise the 30 years praxis for how to write the appurtenant building regulations. These regulations typically present both recommendations and general advice on how to meet a specific requirement, for instance, accessibility and usability for people with disabilities. Instead, the regulations shall refer to new minimum requirements that have been defined as Swedish standards for how the specific building requirements can be achieved. This new model has several similarities with building legislation in Austria, Germany, and Switzerland. However, what is alarming, is that the national authority presume that these standards shall be developed by the building industry itself, rather than as agreements between the building industry and the welfare state what minimum housing qualities are for Swedish housing. Since participation in standardisation also presume a minimum annual fee of approximate 25 000 Swedish crowns per participants, another question materializes, can the building industry act as a representative for a broad and varied group of future users, including people with disabilities?

    Download full text (pdf)
    Andersson-JE-2022
  • 7.
    Andersson, Jonas E.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Residential architecture for the frail ageing: Aiming for innovation - trapped by speculation2022In: Book of abstracts: ENHR Barcelona 2022 / [ed] ENHR, Barcelona: ENHR , 2022Conference paper (Refereed)
    Abstract [en]

    In 2006, a Swedish municipality, part of the expansive building market that the Greater- Stockholm region constitutes, opened an architectural competition that focused on a renewal of local residential architecture for the ageing citizens. The competition also included the task to design the very initial part of a new development that today is the buzzling area of new futuristic housing for modern Sweden. With this dual objective, the municipality hoped for innovative housing for both able and not so able seniors at the same time as the controversies around dismantling a former military airfield were settled. Some 33 proposals were submitted.

    In 2012, after a five-year programming and construction process the new residential care home was finally inaugurated. Or, more accurately, this was the end of a building contract that was obtained in a public tendering process, but severely affected by building contractors wish to enter the then overheated building market at the Swedish capital. Put crudely, this was the beginning of a 10-year municipal building project of constant maintenance work to make the building functional for its frail residents and ultimately as a residential care home. 

    The present study is based on a follow-up research project that for 16 years followed the idea of the municipality to renew architecture for ageing by an open architectural competition with an extended competition brief on future-oriented architecture for seniors. The study describes the tumultuous conversion of the winning proposal for a new residential care home through a building, refurbishment, and renovation process in which the first frail residents and staff become the hostage. What was intended to be a swift and easy building project turned into an exploit of public tenders to conquer a new building market. 

    Download full text (pdf)
    JEAnderssonENHR22
  • 8.
    Babamov, Caroline
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    House of waste: Implementing Disposable Products In Swedish Architecture2022Independent thesis Basic level (university diploma), 20 HE creditsStudent thesis
    Abstract [en]

    It is stated that Sweden is the leading country for the European Union when it

    comes to recycling and sorting. However, tonnes of waste are still being deposited

    to be incinerated instead of being reused or recycled. There are two reasons that

    are mentioned in this thesis. The first one is because of the large percentage of the

    municipal waste is sorted as non-recyclable thus, the solution to get rid of the waste

    existence is through incineration. Secondly, demolition of buildings is a large source

    to the amount of waste that is incinerated. Architects have even criticised the act of

    demolishing buildings when they have a huge potential to be used and solve increasing

    demands of residential buildings in Sweden. Even construction companies have tried

    to focus on solutions in which they recycle remains from demolished constructions

    into new materials for future projects. Still, there are still a demand of mining resources

    instead of using resources that are already used, which on its own has an impact on our

    already fragile environment.

    If we observe how architects, designers, construction engineers outside of Sweden

    tackles these problems. The conclusion is that they use more out of the box solutions by

    using waste that is not only caused by the construction industry alone, but also caused

    by the individuals who live in the country. While Sweden mainly focuses on preventing

    mining of resources used for construction work by recycled remains from other

    constructions. The rest of the world does not only implement this type of waste, but also

    all sorts of waste. Still, at the end, Sweden is stated to be one of the greatest countries

    when it comes to sorting waste.

    The law of banning non-certified disposable products made of plastic was finalised

    in the beginning of this year. It was recommended to not purchase or use products

    of this type if they were manufactured before the law came into action. Though what

    will happen with these products if they cannot be used, and people want to get rid

    of them? This thesis will answer these questions by combining the world of recycling

    with the world of architecture. This thesis is an experimental research based on the

    three methods of recycling waste into building material. The experimental research will

    visualise how disposable waste made of plastics can be implemented by using these

    methods, while also following the requirements of a sustainable construction material

    and product made in Sweden.

    Download full text (pdf)
    fulltext
  • 9.
    Bagher, André
    et al.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Sandberg, Eric
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Vad krävs för att bolag ska investera i nyproduktion i Malmö?: Hyressättningssystem & incitament att bygga2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper examines the requirements that are needed for companies to invest in new development. We go into different rental compensation systems that are used in existing rental apartments and how the state has tried to stimulate the production of rental apartments with the help of presumptive rents and investment support. The subject of no rent regulations or market rents has been a hot topic of debate that even caused the government to resign in 2021. Therefore, the paper continues to investigate whether the strict rent setting system that exists in Sweden prevents the new production of rental properties and whether a free rent setting could have changed this.

    A qualitative method has been used to fulfil the purpose of the paper. The paper is based on scientific articles, literature and interviews with people from various real estate companies. The result of the study is that this is a sensitive issue where opinions vary between private and municipal companies. It can be stated that new developments have decreased and prices for new construction have risen sharply as a result of inflation and the increased interest rate. In order to increase the incentive for new construction of rental apartments, a clearer structure and action plan from the municipalities is required, as well as more granting of building permits, but in the long term, a new reform of the rent compensation system is required.

    Download full text (pdf)
    fulltext
  • 10.
    Borgstrand, Siri
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Carleson, Frida
    Malmö University, Faculty of Technology and Society (TS).
    Tillgänglighetsarbete vid ombyggnation av kulturmärkta byggnader: Utmaningar vid kombination av motstridiga lagkrav2021Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There are multiple laws to consider during reconstructions. In practice, some of these laws are challenging to combine, which inevitably sometimes leads to deviation. BBR 29 and PBL (2010:900) requires accessibility adaptation during reconstructions and that some exceptions are allowed during specific circumstances. The purpose of this paper is to examine accessibility adaptation throughout Boverket’s building process and the priorities made when conflicting regulations give contrary outcomes. What are the challenges and what exceptions to the rules are acceptable? More precisely, this paper will examine accessibility adaptation of culturally valued buildings, since it is not unusual that these laws collide. The study includes a literature study, qualitative interviews and a case study.

    Based on the data, it is clear that each project is unique and has individual characteristics and challenges. Thus, it is not possible to draw general conclusions. However, the practical examples emerging in the data, as well as the case study, indicate some patterns. The majority of the accessibility adaptation is done during the third stage of the building process. Many deviations are necessary due to discovering challenges too late or due to unforeseen practical implications during the development of accessibility solutions. If experts are involved earlier, as well as continuously consulting during the entire process, less deviations could be necessary. This is supported by the case study where an expert was included much earlier, before final decisions on accessibility solutions were made, and the collaboration continued throughout the full project. The constant access to expertise and added time for accessibility solutions, resulted in creative solutions in favor of accessibility adaptation. Few deviations were made. The study indicates that when buildings with a cultural value must be protected, it often makes it difficult for accessibility adaptation in practice. In these cases, the deviation is more often made from accessibility rather than cultural value preservation.

    Download full text (pdf)
    fulltext
  • 11.
    Bülow-Hübe, Helena
    et al.
    FOJAB.
    Dubois, Marie-Claude
    Biosystems and Technology (BT), Swedish University of Agriculture Sciences.
    Hemphälä, Hillevi
    Lunds universitet – Avd. för ergonomi och aerosolteknologi, Inst. för designvetenskaper, LTH..
    Rogers, Paul
    ACC Glas och Fasadkonsult AB.
    Söderlund, Mikael
    ACC Glas och Fasadkonsult AB.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Ljus (dagsljus, solljus, utblick &belysning): en kunskapssammanställning2022Report (Other academic)
    Abstract [sv]

    Denna kunskapssammanställning över bland annat regelverk, vägledningar och frivilligakrav för ljus, dagsljus, solljus, utblick och belysning visar att det finns många verktyg attta hjälp av för att styra kvaliteten inom området. Det är viktigt med robusta lösningar försådant som inverkar på människors hälsa.

    Vid stadsförtätning och maximering av markanvändning finns en risk att dagsljusnivåer ibefintliga byggnader minskar kraftigt. Många nya stadsdelar byggs med så hög täthet attdagsljustillgången inte lever upp till dagens krav i alla vistelserum. Kvantitativadagsljuskraven fungerar som en garant för att trender att rationalisera bort tillgång tilldagsljus och utblick inte drivs alltför långt.

    Det finns inslag i moderna byggprojekt som bidrar till lägre energianvändning somsamtidigt leder till lägre dagsljusinsläpp. Minskad fönsterarea ger som konsekvensminskad dagsljusnivå vilken i sin tur får följden att elektrisk belysning måste tändasoftare, särskilt på lägre våningar. Dagsljus är en fri/gratis ljus- och energikälla, sombidrar till resiliens vid elavbrott.

    Elektrisk belysning är ett relativt nytt fenomen. Glödlamporna och lysrören uppfannsomkring 1880 respektive 1930 dvs. för mindre än 150 år sedan. Före dessa uppfinningarvar alla byggnader belysta av dagsljus och byggplanerna och stadsplaneringen ritadesnoggrant för att säkerställa god tillgång till dagsljus.

    Med dagens energi- och elkris är det värt att poängtera att en av de viktigasteenergikällorna (dagsljus) och också styr tidsanpassning och påverkar utvecklingen avalla arter på jorden, inklusive människor, ända ner till cellnivå. Ny forskning publicerasvarje månad som visar hur varje band av den elektromagnetiska strålningen - från UVtill infraröd - är kopplad till dygnsrytmen och att dygnsrytmen är allmänt grundläggandeför hälsa.

    Det är viktigt att byggbranschen håller sig ajour med pågående medicinsk forskning omcirkadiska cykler och hur dagsljus, solljus, utblick och belysning på verkar hälsa.Nya rekommendationer kommer allt tätare.

    Många av de byggtekniska åtgärder som används för att reducera buller påverkardagsljustillgång och till en viss del även utblick negativt. Vid tekniskt samråd är det inteovanligt att akustikkrav väger tyngre än kraven på dagsljus samt utblick.

    Några av de senaste trenderna i utformningen av nya byggprojekt har lett till reduceradedagsljusnivåer inomhus (t.ex. oregelbunden och asymmetrisk placering av fönster,mörka fasadmaterial, avskärmning via fasadelement).

    Elektrisk belysning inomhus behöver utformas för att underlätta seendet, dvs. utanflimmer och bländning. En god visuell miljö minskar mängden ögonbesvär, huvudvärk,muskel och ledbesvär och kan påverka prestationsförmåga och produktivitet på ettpositivt sätt.

    I detaljplaner fastställs förutsättningarna för exploateringsgraden. Byggnadersmöjligheter att uppfylla krav på ljus, dagsljus, solljus och utblick ska prövas.Vid framtagande av detaljplaner är det därför viktigt att se till att kraven är möjliga attuppfyllas. Idag finns många verktyg som också lämpar sig för tidiga skeden, men det ärinte alltid som de tillämpas eller att exploateringsgraden anpassas till resultaten i destudier som görs. Vid hantering först vid startbesked är projekteringsarbetet långtframskridet och anmärkningar skulle få stora konsekvenser.

    När alla rum i kritiska lägen kontrolleras i projekteringen är det vanligt med avvikelserfrån kraven på dagsljusfaktor. En del kan lösas på ritbordet men inte allt. Ibland ärförutsättningarna för svåra och det går inte att hitta lösningar som tillgodoser alla krav.Djupa rum ger svårare förutsättningar än grunda rum, eftersom ljuset avtar kraftigt medavståndet från fönstret.

    I en tätt byggd stad har inte alla samma möjlighet att välja boende – högst upp i huseteller i gathuset där dagsljuset flödar. Mycket få föredrar mörkare bostäder men många ärberedda att kompromissa bort dagsljustillgången för att få tillgång till stadens puls.Dagsljus ska inte bara vara en lyx som privilegierade kan unna sig, det ska vara entillgängligt för alla.

    I tätbebyggda kvarter är det ofta en utmaning att efterleva regelverket. Dagsljuset i Sverige är relativt svagt, och lågt stående sol, dessutom ofta skymd av omgivandebyggnader, ger långa skuggor. Historien visar att svenska städer kan förse alla boendemed ljusa bostäder men om förtätandet fortsätter enligt samma mönster som tidigare såmåste både lagstiftare och planaktörer ha verktyg att förstå dess begränsningar.Misslyckas planeringen av framtidens städer finns en risk att hälsa och välmående för desom bor i den attraktiva kvartersstaden i all mening äventyras.

    Folkhälsomyndigheten och Arbetsmiljöverket utgår från att brist på dagsljus kan genegativa effekter för hälsan. Uppskattningsvis 80 % av levnadstiden spenderas inomhus.Det är en av anledningarna att miniminivåer för dagsljus i vistelserum är nödvändiga ibyggregler.

    Dagsljusfaktorn är ett bra mått för att bedöma tillgången av dagsljus. Dagsljusfaktornbeskrivs i en nyare standard där den bedöms över en yta och inte i en punkt.BBR hänvisar till föråldrade metoder. Ett kvantitativt dagsljuskrav säkerställer attvistelserum erhåller tillräckligt med dagsljus för att inte riskera människors hälsa.Byggnadens gestaltning får inte riskera människors tillgång till ett hälsosamtdagsljusinsläpp.

    Download full text (pdf)
    fulltext
  • 12.
    Bülow-Hübe, Helena
    et al.
    FOJAB.
    Finnson, Mats
    WSP.
    Gao, Chuansi
    Lunds universitet – Klimatlabb, Avd. för ergonomi och aerosolteknologi, Inst. för designvetenskaper, LTH..
    Tillberg, Max
    EQUA Solutions AB.
    Warfvinge, Catarina
    Lunds universitet – Avd. för Installationsteknik och klimatiseringslära, Inst. för bygg- och miljöteknologi, LTH.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Nuläge termisk komfort: en kunskapssammanställning2022Report (Other academic)
    Abstract [sv]

    Boverket ser ett behov av en kunskapssammanställning kring nuläget inom termisk komfort i Sverige för att ha en så bred och korrekt förståelse som möjligt för vem branschen är, vilka regler som tillämpas, var det finns kunskapscentra och vilka utvecklingsbehov som behöver stödjas för att branschen ska kunna ta större ansvar.

    Några faktafrågeställningar som vi författare noterat och som kan vara värda att kartlägga ytterligare:

    Metoder att simuleraKlimatdata för analyser och simuleringarBetydelsen av värmeöarÅtgärder för att minska värmelaster på byggnaderörbereda plats i byggnader för komfortkylaRisker med fukt och påväxt vid komfortkylaPrioriterade rum för termisk komfortUpplåtelseformers inverkan, utsatta grupper och lokala reglerVädring och fläktarPrioritera passiva åtgärderPortabel luftkylning/komfortkylaTillsyn och bygglovKrav som inte är samordnade (energi, dagsljus, buller, etc.)VarningssystemFörhoppningen är att kartläggning av termisk komfort ska bidra till kunskapsspridning om bransch, aktörer, teknik, system, konstruktion, kontroller, drift och underhåll samt forskning och utveckling.

    Download full text (pdf)
    fulltext
  • 13.
    Dabaieh, Marwa
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US). Aalborg University, Denmark.
    Circular Design for Zero Emission Architecture and Building Practice: It is the Green Way or the Highway2022 (ed. 1st Edition)Book (Refereed)
    Abstract [en]

    Circular Design for Zero Emission Architecture and Building Practice: It is the Green Way or the Highway presents the main concepts of circular architecture and building design, focusing on emerging trends in zero-emission buildings, particularly zero- and minus- carbon practice. The book is structured around practical design solutions, including research-based passive solutions for extreme climates. It discusses passive and low carbon cooling and heating and natural ventilation, lifecycle assessment and life-cost analysis. The book presents examples and case studies from innovative low-tech to high-tech approaches, covering a wide spectrum of climate zones to show lessons learned and proof of concept.

    Vulnerable groups of people such as climate refugees are discussed, alongside how vernacular architecture can help introduce practical methods into low-carbon building practices. This book presents theoretical and practical coverage of circular design for zero emission architecture and building in relation to the global challenges of climate change and extreme weather.

  • 14.
    Ekberg, Lars
    et al.
    CIT Energy Management AB.
    Fagergren, Tomas
    Brandskyddslaget.
    Hjelmer, Per-Erik
    Aquademica AB.
    Kempe, Per
    PE Teknik och Arkitektur AB.
    Ruud, Svein
    RISE Research Institute of Sweden.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Ventilation i Sverige: En kunskapssammanställning2022Report (Other academic)
    Abstract [sv]

    Boverket ser ett behov av en kunskapssammanställning kring nuläget för ventilation för att ha en så bred och korrekt förståelse som möjligt för vem branschen är, vilka regler som tillämpas, var det finns kunskapscentra och vilka utvecklingsbehov som behöver stödjas.

    Rapporten tar upp

    Ventilation som en del av byggnaden; Ventilation i bostäder; Ventilation i lokaler; Ventilation och inneklimatkrav (regelverk) samt kontroller; Mäta och verifiera inneklimat och ventilation; Energikrav och rekommendationer för ventilation; Brandskydd och ventilation; Ventilations påverkan på smittspridning; Vägledningar för ventilation och inomhusklimat; Branschens aktörer i SVerige; En fördjupande enkät; Behov av fortsatt kartläggning

    Download full text (pdf)
    Ventilation i Sverige 2022
  • 15.
    Ekström, Isak
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Lutfiu, Taulant
    Malmö University, Faculty of Technology and Society (TS).
    Jämförelse mellan grundläggningsmetoder för lera med begränsat djup2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This thesis compares foundation methods for buildings on low-strength, limited-depth soil. The study focuses on soil replacement and piling, specifically concrete and steel piles. The studyaims to answer the key questions about the possibility to use short piles on limited depth, cost-efficiency, and environmental impact of these methods.

    Geotechnical and structural calculations are used to assess the loads on the piles and evaluate their strength. WIN-statik Frame Analysis helps analyze deformations, moments, and stresses. The foundation transfers vertical loads to three piles, generating horizontal loads at the pile tops. However, the challenge lies in short piles in clay, which experience low earth pressure and may rotate due to bad stabilization.

    The analysis reveals that concrete piles are unable to transfer loads to solid rock effectively. Without fixed anchorage points, they are prone to rotation due to insufficient stiffness and lateral earth pressure. In contrast, steel piles are preferred because they can be drilled into the rock, providing fixed anchorage at the clay-rock transition and enabling them to withstand loads transferred through the foundation.

    Soil replacement is considered as an alternative method but proves economically expensive, approximately three times more than piling with steel piles. From an environmental standpoint, piling contributes only slightly more carbon dioxide emissions, about 0.4 tons, compared to soil replacement.

    Considering the significant cost advantage and minor environmental impact difference between soil replacement and piling, piling with steel piles is recommended as the optimal foundation method. Concrete piles are dismissed due to their instability. This choice ensures stability, cost-efficiency, and reduced environmental impact for buildings on low-strength, shallow-depth soil.

    Download full text (pdf)
    fulltext
  • 16.
    Ekström Larsson, Oskar
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Ekman, Philip
    Malmö University, Faculty of Technology and Society (TS).
    Förbättrad intern bygglogistik: effektivisering av informationsflöde med digital kalender2023Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Background – Construction logistics involves planning and managing of material, equipment and personnel on a construction site. Waste or non-value-added work on the construction site accounts for 30-35% of the costs and can be reduced through efficient material handling. 

    Purpose – The goal was to investigate which delivery activities on a construction site are critical to the schedule and whether Microsoft Bookings is a valid tool to streamlining information flow. 

    Method – The research questions has been answered using qualitative method in a case study and has been complemented by a literature study of theories and previous research in the field. 

    Theory – The theoretical framework is based on digital calendar, communication, handling of materials and Lean Construction. This framework constitutes a reason to use digital tools or describes the positive effects that accompany an implementation.

    Empirical findings – The results of interviews emphasize the importance of planning, involvement, and clarity through visualization for effective delivery management on the construction site. 

    Discussion & Conclusion – A automated booking tool for delivery is in demand and needed as an implementation leads to a reduction of the number of elements that is required for coordinating material deliveries by coordinate relevant information. The final recommendation is to implement Microsoft Bookings as the tool fulfill four out of six identified needs and characteristics. This does not exclude other types of digital calendars to be evaluated, as the goal is to fulfill all the identified needs and characteristics. 

    Download full text (pdf)
    fulltext
  • 17.
    Esmael, Hasani
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Johan, Maniea
    Malmö University, Faculty of Technology and Society (TS).
    Vindstabilisering av SIPS byggnader i Sverige2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This work is about wind stabilization of a SIPS building in Sweden where the focus is onhow joints take place between the foundation plate and the walls. SIPS (Structural insulatedpanels) is a load-bearing insulation element used to build the entire building envelope. It is anewly arrived building technology in Sweden that is used for passive houses in order toreduce energy use. The elements are prefabricated and bonded together with fiberglassbeams, which are also used to reinforce openings in the building. The method that will beused in this work is the finite element method using a computer program FEM-design by thecompany Strusoft. In the programme the model was rebuilt and calculated according to theEurocode. In collaboration with SIP's company Avis Building technology, the building andthe joint were modeled according to one of their buildings, which was then analyzed. Thisresulted in the joint consisting of screws attached to a profile of aluminum. The result gavethe shear and normal forces that affect the screw and plat. In this way, the question of how anattachment of a SIPs building can take place has been answered. The results in FEM-designshow that a SIPS building can be wind-stabilized in Sweden with the exception of certainparts that can be supplemented with a load-bearing inner wall to achieve full stabilization.But this question cannot be answered with complete certainty without more data and researchon the element being. Too many parameters about the properties of the elements wereunknown, which led to uncertainty. In the program, the building was stabilized but had toolarge deformations in some places. This does not mean that such a building cannot bestabilised, but more research must be carried out before the conclusion can be drawn. In thework, no tests were made of the element, which contributed to this uncertainty. With moremeasurements and trials, a SIPS building can definitely become a future building technologyin Sweden.

    Download full text (pdf)
    Hasani & Maniea
  • 18.
    Fatah Laso, Salar
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Omer, Haure
    Malmö University, Faculty of Technology and Society (TS).
    Prefabricerade kontra platsgjutna betongstomväggar:: En utredning ur miljö- och ekonomiskt perspektiv2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Sweden's construction and property sector accounted for 21,1% of Sweden's total carbon dioxide emissions (CO2) in 2019, which corresponds to 19,3 million tons of CO2e. One of the most common building materials to build the structure of an apartment building with is concrete, which is dominated by two structural methods, prefabricated and cast-in-place concrete structures. In 2020, 80% of Sweden's apartment buildings were manufactured with concrete structures. The purpose of this study is to compare the difference between the concrete structure methods, cast-in-place concrete structure walls versus Prefab structure walls about CO2 emissions and from the economic aspect during the construction phase, the production phase, and the construction production phase A1-A5, to facilitate the choice for the contractor to choose a profitable structure method that emits less CO2e.The result indicates that the cast-in-place structure wall emits 53,5% and 75,3% less CO2e/m2 gross area than the semi-prefab and solid Prefab wall. The result indicates that the cast-in-place method emits 60,4% CO2e/m3 less concrete than semi-precast and 84% CO2e/m3 less concrete than the massive Prefab method. The cast-in-place wall will be 5,6% cheaper than the semi-prefabricated- and 21,4% cheaper than the massive prefabricated wall m2 gross area. The cast-in-place wall will be 10,4% cheaper than the semi-prefabricated- and 33,6% cheaper SEK/m3 concrete for the massive Prefab walls. The conclusions from the study are that the cast-in-place method entails fewer CO2 emissions and is a cheaper alternative compared to the prefabricated methods. This study observes the LCA stages A1-A5 for concrete structure walls only. This study has investigated about six buildings that have a geographical location in southern Sweden, which does not take into account northern Sweden, which has a colder temperature.

    Download full text (pdf)
    fulltext
  • 19.
    Ferm, Victor
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Henrik, Hillvik
    Klimatoptimering av ett småhus med massiv trästomme2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The climate crisis is becoming more prominent in everyday life and the construction industry plays a significant role. The study aims to optimize the climate of a fictional house with exterior walls made of wood. By investigating the climate impact of a building with a solid wooden frame depending on the heating system. The study will focus on two different frame systems, one of which is made of cross-glued wood and one of IsoTimber. The questions are what climate impact a solid wood building does have. What dimension of cross-glued wood is required to meet BBR's requirements? Which combination of frame system and heating system is the most optimal for Malmö and Stockholm? How many years does it take for the heating to have a greater climate impact than the manufacture of the building? How much climate impact will the most optimized building have after 50 years? In the VIP-Energy program, energy calculations have been performed. Quantity and energy calculations have then been translated into carbon dioxide equivalents in the BM program to calculate the climate impact for the buildings with associated heating systems. 

    The results show that cross-glued wood has a lower general climate impact than the frame of IsoTimber. The dimension for meeting BBR's energy requirements with a cross-glued wood frame is 330 mm. The most optimized combination of frame system and heating from a climate point of view is IsoTimber 300 mm with district heating for Malmö and Stockholm. The results show that energy consumption from heating will have a greater climate impact than production for the most optimized alternative only after 22 years for Malmö and 44 years for Stockholm. The building with the least climate impact after 50 years is IsoTimber 300 mm with district heating where the climate impact is 57,7 ton CO2e in Malmö and 43,7 ton CO2e in Stockholm. The study shows that reliable conversion factors are required to translate components and heating systems into carbon dioxide equivalents. The current conversion factor for heating when district heating is used differs between the climate zones, which means that the result is widely distributed. The best optimized alternative, 300 mm IsoTimber with district heating is a good alternative with a low climate impact that still maintains a high level of comfort for the user.

    Download full text (pdf)
    fulltext
  • 20.
    Frühwald, Eva
    et al.
    Division of Structural Engineering , Lund University, Faculty of Engineering , Lund, Sweden.
    Li, Yujing
    Division of Building Materials , Lund University, Faculty of Engineering , Lund, Sweden.
    Wadsö, Lars
    Division of Building Materials , Lund University, Faculty of Engineering , Lund, Sweden.
    Image analysis study of mould susceptibility of spruce and larch wood dried or heat-treated at different temperatures2008In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 3, no 1-2, p. 55-61Article in journal (Refereed)
    Abstract [en]

    In this study, mould growth on wood was investigated by image analysis. The studied parameters were drying and heat-treatment temperatures (20–210°C), original and resawn surface and different wood species (spruce and larch). Small specimens—some of which were inoculated with a spore suspension—were stored under humid conditions and photographed once a week. Mould growth was assessed by image analysis. In general, results found in earlier studies regarding the influence of several parameters could be confirmed. Image analysis was found to be a useful method to quantify mould growth in an objective and reproducible way. 

  • 21.
    Gustavsson, Thorbjörn
    et al.
    RISE - Research Institutes of Sweden.
    Björnlund, Linus
    Conservator AB.
    Bok, Gunilla
    RISE - Research Institutes of Sweden.
    Gustafsson, Eva
    Conservator AB.
    Nilsson, Lars-olof
    Moistenginst AB.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Sikander, Eva
    RISE - Research Institutes of Sweden.
    Fuktsäkra byggnader: en nulägesbeskrivning2022Report (Other academic)
    Abstract [sv]

    Boverket ser ett behov av en kunskapssammanställning kring nuläget om fuktsäkra byggnader i Sverige för att ha en så bred och korrekt förståelse som möjligt för vem branschen är, vilka regler som tillämpas, var det finns kunskapscentra och vilka utvecklingsbehov som behöver stödjas för att branschen ska kunna ta större ansvar.

    De utmaningar som noteras är:

    Byggsektorn beredskap och förmåga att möta de nya förändrade byggregler som planeras av BoverketDen stora andelen fuktrelaterade fel och skador som rapporteras i olika utredningar.Kraven kopplat till fuktrelaterade innemiljöproblem är otydliga och ofta svåra att följa upp. Detta kan leda till fuktrelaterade innemiljöproblem som orsakar lidande för de individer som drabbas.Miljö och klimatfrågan ställer krav både på resurseffektivitet och minskad klimatpåverkan samt resiliens och klimatanpassning.Förändrade boendevanor och brukarvanor som ändrar på förutsättningarna i en byggnad.Fragmentering och specialisering med många aktörer med ansvar för sin del endast.Några utvecklingsområden har noterats. Områden där det behövs både forskning och utveckling av teknik, processer och samarbeten:

    Kvalitetssäkring av nya material, konstruktioner och produktionsmetoderKompetensutveckling och kompetensspridning.Framtagning och tillgängliggörande av kunskap, teknikutveckling.Samsyn behöver utvecklas när det gäller bl.a. uttorkning i betong och i vilken omfattning byggnader behöver skyddas mot fukt under byggproduktionen.Undersökning av utvecklingsmöjligheter behövs för att ta vara på digitaliseringens möjligheter med sensorer, digitala tvillingar, AI m.m. i samband med fuktsäkerhet.Kartläggningen skulle förstärkas med en bredare internationell utblick. Det tycks finnas en del skillnader både i arbetssätt och erfarenheter kring fuktsäkra byggnader.Förhoppningen är att kartläggning av fuktsäkra byggnader ska bidra till kunskapsspridning om bransch, aktörer, teknik, system, konstruktion, kontroller, drift och underhåll samt forskning och fortsatt utvecklingsarbete.

    Download full text (pdf)
    fulltext
  • 22.
    haj, Juana
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Post-Pandemic Alternative Architectural Design2021Independent thesis Basic level (degree of Bachelor), 20 HE creditsStudent thesis
    Abstract [en]

    Architecture is known to gather people and encourage shared spaces in our buildings and homes, while the Corona virus, aka COVID-19 has refrained us from our usual face to face communication and meetups. For some, work and social life has been reduced and limited to a screen, virtual meetings for studies, work, social events and so forth.

    Architecture has its impact on us more than ever before. It can and should provide us safety, infection control and prevention from getting sick. The materials we choose to design our home with is also crucial in a pandemic situation as we should be looking for disinfectant material properties. Copper have been shown to perform better than other common materials like steel, plastic, and wood. Air circulation and ventilation in inner spaces will also have stricter requirements where the air should be changed every hour and checking the air quality – that could be improved with the ratio of greenery and open spaces. Designing a home that can stimulate the productivity, flexibility, comfort, happiness, and health in its dwellers is the ultimate goal for this study. The target audience for the thesis are architects, interior designers and laymen who are interested in this field or those that are seeking a design which promotes healthy, safe and adequate living spaces and homes.

    The methods used in this study where both quantitative and qualitative methods through an international online survey as well as conducting local interviews with residential buildings’ dwellers in Berlin. On one hand, poor design can lead to both higher expenses in the long term as well as leading to bad physical and mental health, which is felt through the responses from both the survey and interviews. The biophilic design on the other hand, can have a huge positive impact on the dwellers both physically and mentally and should be tested and used more as a solid base for designing interior spaces.

    Download full text (pdf)
    fulltext
  • 23.
    Jensén, Nils
    et al.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Ander, Elias
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Trivsel och databaserad design: samspel eller konkurrens?2021Independent thesis Basic level (degree of Bachelor), 20 HE creditsStudent thesis
    Abstract [en]

    This thesis explores a new field of design called computational design and the tools covered therein. Specifically, it focusses on quantitative values, and whether this method can be developed to center on well-being in relation to qualitative values in the built environment ‒ specifically daylight. The paper explores what computation design is, how it is implemented in Sweden today, and whether it can help us achieve what we perceive as comfortable daylight. This thesis aimed to investigate whether an alternative design method could be construed for this purpose: a method that is easy to incorporate, while ensuring high quality before quantity, using modern computational power.

    The subject of well-being has been thoroughly researched, while a majority of the research within computational design is conducted ‘in-house’ ‒ as part of R&D departments of large actors in the field. As of today, virtually all decision-making concerning daylight in Swedish architecture relies upon the Swedish building regulations, BBR. With time, these recommendations ‒ defined as the lowest accepted level for that which is built ‒ have become established guidelines for industry actors. Every actor has a responsibility to, while ensuring the recommendations are fulfilled, to also create good architecture. Working with computational design offers some benefits over traditional design methods, but it also carries with it some pitfalls. The technology is immensely powerful, with seemingly endless possibilities, but there is an integral risk in trusting digits without really knowing what their implications are: this leads to misguidance.

    The project was conducted in a series of phases. First of all, information and general knowledge about computational design and daylighting was gathered through reviewing literature and previous research. Then, key Swedish professionals in the fields of architecture and computational design were identified and contacted to get some insight and background on the topic. The interviews with these influential actors in architecture and urban design confirmed the need for a methodical development within the subject of well-being and daylighting. In particular, a need was identified for reassessing methods used for calculating the amount – and quality – of daylight, based on modern conditions.

    After mapping and analysing the empirical findings of the study, the conclusions were implemented in a practical design task. This culminated in a design proposal for adaptable modules that modify daylight using computational design. The modules were parametrically designed based on the assembled data ‒ the direction; the location and the specific needs depending on the type of function or environment ‒ be it a residence, an office, a library, a public pavilion or something else.

    By quantifying qualitative parameters, it’s possible to incorporate softer qualities in computational design ‒ keeping in mind that relying on these data won’t guarantee good architecture. The biggest challenge with the task at hand is to quantify values generally considered to be subjective. The methods in question are best applied when thought of as complements to traditional design methods ‒ pen and paper, physical models and other components in the architect's toolbox. Computational design is today rarely used throughout the whole design process, and this leaves potential for future development.

    Download full text (pdf)
    fulltext
  • 24.
    Johansson, Emelie
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Welinder, Frida
    Malmö University, Faculty of Technology and Society (TS).
    Massiva trähusens klimatpåverkan: En fallstudie om utsläpp av koldioxidekvivalenter från träkonstruktioner under byggskedet2021Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to bring forward a life cycle analysis (LCA) on two single-family houses, starting from the climate declaration. This means that the study only focused on the construction phase. Thereafter alternative materials were investigated with the purpose to try to reduce the impact on the climate. An LCA is a method to calculate the environmental impact from a product during its entire life cycle. The first building was an one and a half storey house, called ”Sjölin”, and the second building was a single-storey house, called “Tockabjär”.

    According to the climate declaration the environmental impact was only studied from the environmental impact category “climate impact”, which means emissions from carbon dioxide equivalents (CO2e). As an aid to calculate the climate impact the database Byggsektorns Miljöberäkningsverktyg (BM 1.0) was used. This database contains generic data on a variety of building resources. The generic data found in the program can be supplemented with specific data from EPD:s associated with different products and manufacturers.

    To examine the possibility of reducing the climate impact from both the reference buildings an investigation was performed by reviewing EPD:s from other materials. The materials chosen as possible alternatives needed to have similar characteristics as the original materials, to prevent an effect on the operating function. The aim for this study was to use as many wood-based materials as possible.

    The results before and after the material exchange showed a CO2e-emission per gross area (BTA) with 131,65 kg/ m2 in relation to 118,52 kg/ m2 for Sjölin. The results for Tockabjär was 132,28 kg/ m2 in relation to 130,24 kg/ m2. In relation to the proposed limit from IVL (at 171 kg CO2e/ m2 BTA for single-family houses) the two reference buildings maintain a good margin.

    Download full text (pdf)
    fulltext
  • 25. Johansson, Sanne
    et al.
    Li, Yujing
    Lund University.
    Wadsö, Lars
    Lund University.
    Biological organisms on building facades2005In: 7 th Nordic Building Physics Symposium in Reykjavik, 2005Conference paper (Refereed)
  • 26.
    Jonsson, Rolf
    et al.
    PEAB.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Byggprocess för trähusbyggande med väderskydd2021Report (Other academic)
    Abstract [en]

    It is common to build wooden houses without weather protection today! The time for frame assembly can be made really short by adapting to "good weather". By plastering and handling any water efficiently and in various ways remedying any discoloration and moisture damage, saved weather protection is justified during the construction period. For CLT, for example, sanding of wooden surfaces is recommended. The frames in these projects are relatively simple to assemble and large work efforts remain with additions to walls, floors and surface layers, as well as installation work, which means that the construction time will still be relatively long. Increased prefabrication would provide great opportunities for time savings for frame completion, surface layers and installations. The client needs to make the right decision about the building system early in the construction process to get a shorter construction time. With a higher degree of prefabrication and weather protection, it is possible to halve the construction time. Systems with a higher degree of completion presuppose that, for example, electrical wiring is prepared and that internal surface layers are ready or at least more closely ready. Then there must also be comprehensive weather protection In order to "redesign" the construction process, a development of technical systems is needed. It also requires that the conditions for the construction projects are analyzed in the early stages of the construction process, during planning and already when procurement of frame deliveries and subcontractors is carried out. The construction system needs to be treated early and installations and surface layers integrated into the design work. The frame suppliers need to develop their products to also include preparations for primarily installations but also surface layers. A rough estimate of how the total cost is affected by a halved construction period has also been carried out. It refers to a hypothetical project and the assessment is that the construction cost will be approximately the same even if the sub-costs are redistributed. For the client, there should be a profit on lower interest expenses, slightly lower design costs and the opportunity to rent out or use the building earlier. For it to be profitable with weather protection, it needs to be included in the conditions from the beginning of the design. The choice of building system and the design of the building are of great importance.

    Download full text (pdf)
    fulltext
  • 27.
    Koivisto, Markus
    et al.
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Barthélemy, Thomas
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Förstärkning av plattgrundläggning vid påbyggnad2021Independent thesis Basic level (university diploma), 180 HE creditsStudent thesis
    Abstract [en]

    The increase in population and the urbanization process means that more buildings must be built in the cities. Extension of existing buildings is a solution to increase housing capacity, but the existing structure must be strengthened to be able to carry the new loads. 

    The purpose of this study is to investigate a strengthening method of spread footing in two technical fields: geotechnics and building construction. The questions were: what investigations must be made and what load-bearing capacity has a structure that is loaded before and after enlargement of the spread footing? In addition to specialized literature, reports and essays, the Eurocodes have been a reference.

    Some methods for enlargement of spread footing are presented. A fictitious case has been developed based on construction documents and measurements in an existing parking garage that was placed in Malmö and founded on clay till. A dimensioning for enlargement of the existing spread footing has been reported in the form of calculation checks and drawings.

    The vertical loads before the extension were estimated at 2242 kN and increased to 3894 kN after the extension. An increase in the width of the footing by 0.45 m on all sides was calculated necessary to maintain the same tension in the ground. In order to achieve an acceptable capacity, an overlay of 0.2 m was also assumed to be necessary. The calculation controls approved the new dimensions and determined the quantity of new dowels to be used, partly to extend the existing reinforcement, partly to improve the adhesion between the old and the new concrete.

    The choice of enlargement method is associated with several factors therefore, one method is not better than another. The appropriate method must be determined on a case-by-case basis with a working methodology with surveys and relevant calculations. The conclusions are that the results of the study are considered reasonable, but more accurate dimensioning could be performed with FEM-programs.

    Download full text (pdf)
    fulltext
  • 28.
    Kozak, Celine
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    SUSTAINABILITY OF MULTI-STORY WOOD BUILDINGS: Can the Swedish forestry keep up with the demand?2023Independent thesis Basic level (degree of Bachelor), 20 HE creditsStudent thesis
    Abstract [en]

     

    Wood has been traditionally used as a construction material in Nordic countries such as Sweden dating back to the 12th century. Using wood as a building material for the construction of buildings with more than two stories became the norm around the 1850s and has only increased with the pressing need for more sustainable and environmentally friendly alternatives to materials such as concrete. The aim of this thesis is to bring attention to attitudes towards environmental, economic, and social sustainability of commercial multi-story wood buildings amongst industry professionals. Qualitative data was gathered through digitally conducted, semistructured interviews with six people from within fields related to carpentry, architecture, ecology, and forestry. Three buildings were briefly studied as a part of a case study on multi-story wood buildings: Fyrtornet in Malmö, Sweden, Sara 

    Cultural Centre in Skellefteå, Sweden, and The Oakwood Timber Tower in London, England. The results showed that the practice of constructing multi-story wood buildings wasn’t sustainable because of the intense short rotation forestry pushing ecosystems to extinction. Wood was still considered to be a good alternative to carbon intense materials such as concrete. Limitations include relying on only qualitative data as the methodology, for future research the author suggests conducting a comparative Life cycle assessment (LCA) with a cradle-to-cradle approach, as a way to study environmental impacts of timber versus other natural materials available in Sweden such as clay, straw and hemp.

    Download full text (pdf)
    fulltext
  • 29.
    Kärrholm, Mattias
    Malmö högskola, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    The Scaling of Sustainable Urban Form: A Case of Scale-related Issues and Sustainable Planning in Malmö, Sweden2011In: European Planning Studies, ISSN 0965-4313, E-ISSN 1469-5944, Vol. 19, no 1, p. 97-112Article in journal (Refereed)
    Abstract [en]

    In this article I investigate spatial scale as an aspect that needs to be more carefully addressed in the discussion and planning of ‘sustainable urban forms’. Focusing on the Malmö-Lund region in Sweden, I discuss problems of scale as related to the new take on sustainability in Malmö planning documents, especially the update of the Malmö comprehensive plan from 2005. The paper is divided into three sections. First, I discuss the concept and problem of spatial scale, contextualising it in theory as well as in recent discussions on urban transformations. Second, I briefly discuss the discourse of sustainable urban forms, pointing out some scale-related issues that need to be more carefully addressed. In the third and main section of the article, I investigate plans and projects for urban development in Malmö, focusing and elaborating on spatial scale and discussing the findings in terms of three kinds of scale stabilisation: in terms of territory, size and hierarchy. The article concludes with a call for further work for the possibilities of a more dynamic and multi-scalar approach in urban planning.

  • 30.
    Lanneld, Jakob
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Quick, Jennifer
    Malmö University, Faculty of Technology and Society (TS).
    Studie om värmetröghetens påverkan i tunga och lätta byggnader: Med avseende på energianvändning och branschens uppfattning2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This is a study comparing light and heavy buildings regarding the buildings thermal inertia and how that effects the energy use. The study also investigates the opinion and usage of thermal inertia from different professions in the building industry. The climate- and energy crisis is a fact in Sweden and the building sector needs to decrease its energy use and environmental footprint, not only in the construction face but the throughout the whole life cycle.  The two methods used in this study is semi-structured interviews and calculations in the program BIM-Energy. There were six interviews and the responders varied between building engineer and a business developing manger. The models consist of eight different buildings, four offices, were two are with heavy construction and two with light construction, with both high and low insolation. The other four buildings were modeled the same way, but the buildings area of use was apartments.  The results were that the energy consumption did decrease in the office buildings for the heavy construction compared to the light. The apartments did not significantly decrease in energy consumption and therefore the conclusion is that the usage of the building is an important factor in making a building use less energy with thermal inertia. The results from the interviews were that they did not use thermal inertia when dimensioning the buildings, but thermal inertia did decrease the energy consumption, but the amount of decrease was not agreed upon. The conclusion is that the building sector have different perception about how much the thermal inertia does affect the energy usage but also that the building sector does not use it when dimensioning a building.  

    Download full text (pdf)
    fulltext
  • 31.
    Lauridsen, Nikola
    et al.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Pärsson, Erik
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Energieffektivisering av befintliga kommersiella byggnader2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction industry has increasingly moved in an environmentally conscious direction when energy-efficient and sustainable buildings are in focus. The motivation behind this development is largely about reducing emissions and relieving the environment, both through new construction, but also through making existing buildings more efficient. For that reason, it is relevant to highlight how energy efficiency of existing properties are done, and how it can be optimized from an environmentally conscious perspective.

    In order to get a clear picture of energy efficiency and its environmental impact, the study will highlight the differences between new production and existing buildings. The parts that will be discussed are economics, sustainability, and the environment. Through qualitative interviews, the largest real estate companies in Skåne will reveal what the work with energy efficiency of existing commercial buildings looks like.

    Therefore, the purpose of this study is to investigate how the large real estate companies in Skåne work with their existing commercial properties. The method in the study is a qualitative method where people at the property companies had to answer a selection of questions. The questions posed are relevant to modern society and highlight how real estate companies work with environmental factors and economic factors.

    The result shows that the study of energy efficiency of existing buildings is a crucial aspect of sustainable development. The study deals with the construction and property industry's emissions of greenhouse gases, and it is therefore of the utmost importance to review the existing properties that the property companies own and where there are opportunities for improvement. The improvements are what make existing buildings increase their environmental performance so that they can comply with the environmental requirements that both Sweden and the EU provide.

    In conclusion, an increased awareness of the benefits of energy efficiency should produce results, and this could be done throughout training where the individuals who work with properties get a greater insight into energy saving methods.

    Download full text (pdf)
    fulltext
  • 32.
    Li, Yujing
    Lund University.
    Activities of Indoor Mould as a Function of Temperature and Relative Humidities2012Conference paper (Refereed)
  • 33.
    Li, Yujing
    Lunds universitet.
    Minska risken för mögeltillväxt hemma2015Other (Other academic)
  • 34.
    Li, Yujing
    Lund University.
    System Dynamic Model of Mould Growth on Building Materials2014Conference paper (Refereed)
  • 35.
    Li, Yujing
    Lund University.
    System Modelling of Mould on Wood2013Conference paper (Refereed)
  • 36.
    Li, Yujing
    et al.
    Lund University.
    Wadsö, Lars
    Lund University.
    Fungal activities of indoor moulds on wood as a function of relative humidity during desorption and adsorption processes2013In: Engineering in Life Sciences, ISSN 1618-0240, E-ISSN 1618-2863, Vol. 13, no 6, p. 528-535Article in journal (Refereed)
    Abstract [en]

    Activities of moulds from domestic dwellings are normally classified into three groupsprimary, secondary, and tertiary colonizersaccording to the minimum relative humidity they require to colonize a substrate. With the help of isothermal calorimetry it is possible to directly measure the thermal activity from moulds as a function of climatic parameters. This makes it possible to provide more precise and detailed information of the growth behavior of these types of moulds under different temperature and relative humidity level than traditional methods. From this study, it is found that the optimal relative humidities and the recovery from drying are different for these three different colonizers. The fungal activities during desorption process are higher than during adsorption processes under the same relative humidity level for all of the samples. Such information makes it possible to model mould behavior indoors and can be used to access the risk for mould growth in the buildings.

  • 37.
    Liljekvist, Adam
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Svensson, Danny
    Malmö University, Faculty of Technology and Society (TS).
    Det invändiga tätskiktets historia2021Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Building houses with proper indoor environmental sealing is something that always has been strived after. At the beginning the purpose was to increase indoor comfort by stopping gusts of wind in floors and ceilings. Later, understanding was gained how leaks can be damaging for our constructions in the shape of thermal forces in convection and diffusion through the environment sealing.

    With the purpose of increasing and broadening the general, basic understanding and knowledge in the field a compilation from a historical perspective of how isolation is achieved. This essay is focused solely on the Swedish development in isolation of wooden structures. The foundation of this essay is based on a literature study where rapports, periodicals and building instructions are examined. 

    Another area of study that is examined here is when a proper understanding of the benefits of isolation was reached in relation to its impact on the efficiency of ventilation systems and heat isolation, which impacts the total energy consumption. 

    The following conclusion can be made from the study: 

    The indoor environment sealing has changed a lot in the latest hundred years and the change was probably made by ”trial and error”. The change in material is probably due to the easiness when using the plastic folie.     

    There is not only one answer to when the realization was made that the indoor sealing had more of a purpose than protection against gusts. But it was probably in the 1920´s. 

    The installation technique has change since the introduction of the plastic folie. The change was probably made by ”trial and error” or in a combination with the scientific discoveries that was made. 

    Download full text (pdf)
    fulltext
  • 38.
    Lundgren, Jens
    et al.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Lundgren, Gustav
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Fallstudie om integrering av tilluftskanaler i fasadens isolerskikt för FTX-ventilation: -En lönsam byggmetod?2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    An unnecessarily high energy use characterizes the property portfolio in Sweden and there isan opportunity to make a change, but according to statistics it happens in small steps. There isa need for innovative construction methods for reduced energy use, which at the same timebenefit property owners by increasing profitability as operating costs are reduced.The purpose of this study is to investigate the profitability of installing a mechanicalventilation with heat recovery (MVHR) in an existing property by integrating supply airchannels in the facade at the same time as the property is additionally insulated. Theconditions are that the property is already ventilated with fan-controlled exhaust air, and thetechnical life of the property's facade is over and is in need of renovation. The study does nottake increased rents into account and the profitability of the investment must be generated bythe annually saved heating costs.The method for the work is a quantitative case study based on the rental propertySkidstaven in Stockholm, which is one of the first properties in Sweden to have installedsupply air ducts in the façade of a building. The source of all empirical data issemi-structured interviews and quantitative surveys. The information gathered has been usedto simulate four different scenarios in the BIM Energy program. The cost of the renovationand energy use has later been calculated and analyzed, using the valuation theories; LCCcalculation, the payback method and the direct capitalization method. Sensitivity analysis andscenario analysis is performed to investigate possible future scenarios at different energyprices.The results show that energy use for heating can be reduced by up to 66%, but thecurrent district heating price and the high investment costs mean that not all scenarios meetthe requirements for profitability in the payback and direct capitalization method. Inconnection with facade renovation, integration of supply air ducts in the insulation layer ofthe facade is more economically profitable than traditional installation of FTX. As theproperty is in the process of insulating the facade, the additional cost of installing supply airducts is approximately SEK 3.4 million, seen from a life cycle perspective, the cost is SEK2.4 million.

    Download full text (pdf)
    fulltext
  • 39.
    Mjörnell, Kristina
    et al.
    RISE - Research Institutes of Sweden.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Genomlysning branschstandard för fuktsäker byggprocess2022Report (Other academic)
    Abstract [sv]

    Denna genomlysning av Branschstandard ByggaF – metod för fuktsäker byggprocess hargjorts med målet tydliggöra den fuktsäkerhetsprocess som krävs för att säkerställafuktsäkra byggnader och med speciell hänsyn till det tänkta nya formatet i projektetMöjligheternas Byggregler.Arbetet har utförts av en grupp personer som representerar olika aktörer i byggsektorn ochsom är väl förtrogna med Branschstandard ByggaF och flera använder den dagligen.Arbetet som genomförts under en kort och intensiv period har präglats av ett stortengagemang och vilja att bidra till förbättring och anpassning av Branschstandard ByggaFtill nya förutsättningar och behov.Det är viktigt att betona är att det här är en genomlysning som ska visa påutvecklingsbehov av Branschstandard ByggaF utifrån de kommande förändringarna ibyggreglerna. Genomlysningen har visat på delar som inte fungerar så bra i praktiken ochsom behöver revideras och vidareutvecklas. Uppdraget omfattar inte att ta fram en nyreviderad Branschstandard ByggaF men förbättringsförslag har identifierats under rubriken“önskat läge”. Arbetsgruppen har många tankar om vad som borde revideras i nuvarandeBranschstandard ByggaF och i nästa steg, när det faktiska arbetet ska göras medrevideringar kan det behövs göras andra ändringar än vad som föreslås här. Detta är baraett förslag.Det är dock viktigt att poängtera att det som återges här inte är något färdigt förslag ochinte alltid arbetsgruppens gemensamma åsikt (koncensus) utan mer exempel på möjligautvecklingsriktningar. Trots att arbetsgruppen försökt nå konsensus har det funnits liteolika synsätt på vissa detaljfrågor. 

    Download full text (pdf)
    fulltext
  • 40.
    Mohammed, Lina
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Al Rifai, Rama
    Malmö University, Faculty of Technology and Society (TS).
    Implementering och användning av digitala verktyg med fokus på nyttjande av 3D-modell i produktion2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The digitalization of the construction industry has not advanced significantly compared to other industries, but there is a growing recognition that increased digitalization can lead to significant efficiency improvements. This study focuses on investigating the use of digital tools, particularly the 3D model, in the production phase.

    Therefore, the goal of this report is to propose ways to develop the workflow in production to increase the use of the 3D model and achieve a more efficient work process within construction companies. By exploring and identifying the potential benefits of using the 3D model in the production phase.

    The methodology employed in this study encompasses both qualitative aspects, such as interviews, and quantitative elements, through literature reviews. The interviews were conducted with five construction supervisors involved in different projects within a major construction company in Malmö.

    The interview findings indicate that construction supervisors currently utilize digital tools and the 3D model in production to a limited extent. While resources are available for their use, there is a lack of clear methodologies. Other challenges highlighted in the report include various deficiencies in the 3D model, which make it less reliable and increase the difficulty of its utilization.

    The study concludes that a significant emphasis should be placed on establishing a clearly presented workflow at the beginning of a project. Construction companies should develop approaches that inform, demonstrate, and educate all construction supervisors about the functionalities of the 3D model, how it can streamline daily work, and how it can be utilized. Furthermore, the study highlights the importance of maintaining an updated 3D model throughout the project and enhancing detail management from the design phase as a prerequisite for increased usage of the 3D model in production.

    Download full text (pdf)
    fulltext
  • 41.
    Nik, Vahid
    et al.
    Lunds universitet, Avdelningen för Byggnadsfysik, LTH.
    Johansson, Dennis
    Lunds universitet, Avdelningen för Byggnadsfysik, LTH.
    Fransson, Victor
    Lunds universitet, Avdelningen för Byggnadsfysik, LTH.
    Javanroodi, Kavan
    Lunds universitet, Avdelningen för Byggnadsfysik, LTH.
    Wallentén, Petter
    Lunds universitet, Avdelningen för Byggnadsfysik, LTH.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Klimatdata och klimatfiler för övertemperatursimuleringar i byggnader: en kunskapssammanställning2022Report (Other academic)
    Abstract [sv]

    Denna kunskapssammanställning om klimatdata och klimatfiler kan ge en bred och korrekt förståelse om var det finns kunskap och vilka utvecklingsbehov som behöverstödjas, vilka som agerar inom området och vilka regler och standarder som tillämpas.

    För att klara klimatförändringar har det stora fokuset inom byggsektorn (och många andra sektorer) hittills varit att ”lindra effekterna av klimatförändringen”. Detta samtidigt som det är nödvändigt med förberedelser för klimatförändringar, eftersom de sker och påverkar alla människor. Därför behövs större uppmärksamhet på ”klimatförändringsanpassning” genom att öka kunskapen inom byggsektorn, utveckla och testa metoder och syntetisera lättanvända uppsättningar av klimatdata för användarna.

    I många länder måste användarna köpa väderdata, medan det i andra länder finns uppsättningar av väderdata som är offentliga. Det finnas flera tillvägagångssätt för att ta fram indata (klimatfiler för framtiden) till den stora användningen som kan förutses. Allt kräver investeringar i att skapa kunskap och underlag/data som kan delas med användarna. Felaktig användning av klimatfiler för framtiden kan leda till mycket dyra ekonomiska konsekvenser. Analysers rumsliga och tidsmässiga upplösningar spelar en viktig roll för kraven på kvalitet på klimatfiler för framtidens väder.

    Mikroklimat påverkar energi- och fuktprestandan hos byggnader (och energisystem) men försummas av de flesta tillgängliga tillvägagångssätten. Detta samtidigt som effekter av extrema klimathändelser kan förändras avsevärt i urban/mikroskala. Att ta hänsyn till mikroklimat kommer att öka kostnaden för analyser avsevärt och det är inte möjligt i alla lägen. Därför behöver prioriteringar göras av kvalificerade beslutsfattare.

    Osäkerhet finns i alla indata som används i olika analyser av energianvändning och inomhusklimat. När beräkningar och simuleringar görs, kan säkerhetsmarginaler anpassas på olika sätt. Klimatfiler för framtiden kan ha säkerhetsmarginal, men frågan ärom det ska vara för en kort, lång eller mycket lång period.

    I dagens bostadsprojekt är det mycket ovanligt med komfortkyla. Kommer det att vara annorlunda om 10–15 år? Behöver nya byggnader förberedas för komplettering med komfortkyla? Möjliga konsekvenser och hur osäkerhet ska hanteras samtsäkerhetsmarginaler användas behöver utredas vidare.

    Det finns tre stora luckor i nuläget för byggbranschen (och anläggningsarbeten)

    1. Brist på korrekta väderdata/klimatfiler för framtiden, som lätt kan användas av alla intressenter.
    2. Brist på nya/uppdaterade/verifierade tillvägagångssätt som korrekt tar hänsyn till extrema väderhändelser och osäkerheter om klimatet.
    3. Bristande kunskap hos ingenjörer, intressenter, ansvariga offentliga sektorer och även forskare om konsekvensanalys av klimatförändringar.

    Med tanke på de senaste framstegen inom området för modellering av klimatförändringar och det framgångsrika forskningsarbetet med att koppla klimatmodeller till tekniska modeller, borde det finnas stora möjligheter att ta itu med frågeställningarna. Det krävs att tydliga mål sätts upp och att åtgärder vidtas.

    Download full text (pdf)
    fulltext
  • 42.
    Nilsson, Alice
    et al.
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Hansen, Jennie
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Börrefors Wensmo, Moa
    Malmö University, Faculty of Culture and Society (KS), Department of Urban Studies (US).
    Miljövänliga byggnader - Hyresgästens upplevelse: Hur upplevs miljövänliga byggnader ur en hyresgästs perspektiv?2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Download full text (pdf)
    fulltext
  • 43.
    Nilsson, Evelyn
    et al.
    Malmö University, Faculty of Technology and Society (TS).
    Parkkonen, Jonna
    Malmö University, Faculty of Technology and Society (TS).
    Jämförelse av ljudisolering i öppna och stängda planlösningar baserat på DnTw-mätningar2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    A good acoustic indoor environment is today a necessity to prevent effects on people’s health. Current research provides clear indications of how prolonged exposure to unwanted noise can lead to various conditions such as stress, depression, and cardiovascular diseases. Studies highlight the problems related to disturbed or excluded sleep due to bothersome unwanted noise. This demand for a quiet and sound indoor environment does not align with the constant urbanization taking place in society. One prevalent type of housing is a residence with an exterior corridor connecting the apartments. The common layout for these apartments is to place the bedroom directly adjacent to the corridor. Since the National Board of Housing, Building, and Planning (Boverket) imposes requirements for sound insulation between the corridor and the bedroom, it´s of relevance to investigate the impact of the floorplan to meet these required standards.

    This thesis aims to investigate any deviations in DnTw values with varying apartment layouts for calculated and field-measured values. The DnTw-value refers to sound insulation in an element, based on the reverberation in the receiving room. Further investigation is made to answer whether these potential deviations in field measurements correlate with the calculations made during the engineering process. The goal is to identify the differences between calculated and measured values for sound insulation and the effect of a varying floor plan.

    The results showed an insignificant difference in the measured DnTw value with varying volume. However, this deviation was different from the theoretically calculated difference between open and closed apartment layouts. Thus, the DnTw value is more prominently value dependent in theory compared to the values measured in the field. This leaves a higher DnTw value for the separating surface than the actual performance in the field. 

    Download full text (pdf)
    fulltext
  • 44.
    Norrsell, Josefine
    et al.
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Hushmand, Shagufa
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Klimatberäkningar av innerväggar: En jämförelsekalkyl över 14 olika alternativa systeminnerväggar2021Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To change climate impact generated by the construction sector, it is of importance to understand the situation of today. January 2022, a new climate-law will require a climate declaration for all new buildings to be produced. The long-term national goal is to achieve zero emissions by 2045. The local initiative LFM30 aims for the construction sector in Malmö to be climate neutral by 2030.

    There are several ways in which the climate footprint from the construction sector can be reduced. The purpose of this study is to investigate and suggest ways to reduce climate impact on interior walls. Also, to investigate if climate calculations are made today.

    The study relies on four parts. Calculations on climate impact regarding carbon dioxide equivalents and price. An interview study, a case study on a renovation project and by a literature study.

    Results from the interviews shed light on difficulties regarding climate calculations during the design of a building. They are time-consuming and resource intensive.

    Calculations within the study show that stud walls with right configuration can lower the climate impact to more than half. The reduction is due to change in material on studs, isolation and boards. The study states that bio-based insulation materials have a lower climate impact than traditional mineral wool. Also, that wooden studs generate a lower amount of CO2e than steel studs do. Concerning boards, the difference is not distinct between wood-based boards and gypsum boards.

    Conclusions are that since it’s possible to reduce the climate impact while maintaining cost, climate-smart interior walls can hopefully soon become reality.

    Download full text (pdf)
    fulltext
  • 45.
    Pedersen, Eja
    et al.
    Lund University.
    Borell, Jonas
    Lund University.
    Caltenco, Héctor
    Lund University.
    Dahlblom, Mats
    Lund University.
    Gao, Chuansi
    Lund University.
    Harderup, Lars-Erik
    Lund University.
    Li, Yujing
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Nordquist, Birgitta
    Lund University.
    Stålne, Kristian
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Wallentén, Petter
    Lund University.
    Wierzbicka, Aneta
    Lund University.
    Challenges in Transdisciplinary Research—Example from a Study on People as Part of Energy and Ventilation Systems in Residential Buildings (PEIRE)2018In: Cold Climate HVAC 2018: Sustainable Buildings in Cold Climates / [ed] Dennis Johansson; Hans Bagge; Åsa Wahlström, Springer, 2018, p. 803-812Chapter in book (Other academic)
    Abstract [en]

    Energy efficiency measures in residential buildings typically include changes in ventilation and heating systems, and increased thermal insulation of the building envelope. The expected energy efficiency is not always reached, despite large knowledge and professional implementation of each separate measure. There is a lack in understanding of how technical systems interact, and how the occupants are influenced by and in turn influence the systems by their behaviour. A holistic view and a transdisciplinary research approach are needed to understand relevant interactions and propose integrated energy efficiency measures. The aim of this paper is to reveal challenges in transdisciplinary research projects that include real world studies on both humans and technical systems with measurements before and after renovation of multifamily housing. It is based on experiences from the PEIRE-project (People, Environment, Indoor, Renovation, Energy) carried out by a research team with expertise on environmental psychology, human behaviour, interaction design, universal design, building physics, building services, thermal comfort, aerosol technology, exposure assessment, acoustics, daylight, and complex thinking. Differences in theoretical bases and methodology needed to be dealt with. Metatheory building could help with the transition from a multi- to a transdisciplinary understanding.

  • 46.
    Pedersen, Eja
    et al.
    Lund University.
    Borell, Jonas
    Lund University.
    Li, Yujing
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Stålne, Kristian
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Good indoor environmental quality (IEQ) and high energy efficiency in multifamily dwellings: How do tenants view the conditions needed to achieve both?2021In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 191, article id 107581Article in journal (Refereed)
    Abstract [en]

    Sustainable housing that both creates good indoor environmental quality (IEQ) and avoids unnecessary energy use has proved difficult to realize. Renovations of multifamily houses provide an opportunity to find this balance. This study concerns whether tenants perceive that conditions for achieving sufficient IEQ with low energy use exist. Focus group interviews with 42 participants, in areas where the rents were in the lower range and included heating up to 21 degrees C, aimed to capture the tenants' perceptions of: IEQ and actions taken to regulate it; information and control; the connections between IEQ and energy use; and the role of the housing company. Good IEQ was crucial to interviewees, who described it as sufficient heat without draughts, ability to ventilate, and no disturbing sounds or smells. The main responsibility was attributed to the housing company, but daily regulation controlled by tenants. However, unclear interfaces between tenants and the systems that regulate IEQ make it difficult for tenants to act as a positive part of the system. Tenants did not link IEQ to energy use. A holistic view of the physical environment's affordances, including intuitive interfaces, could optimize the balance between good IEQ and energy use.

    Download full text (pdf)
    fulltext
  • 47.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Byggarbetsplatsens teknikhandbok 20202020 (ed. 5)Book (Other (popular science, discussion, etc.))
    Abstract [en]

    A technical handbook written for everyone at the construction site, but also useful for others in the construction industry. The book deals with the usual components of work in the construction of residential and commercial buildings. It contains important points to keep in mind with reference to additional information, It also deals with general requirements of the construction process, quality, environment, occupational health, news, innovations and more.

  • 48.
    Persson, Mats
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Digitalisering i yrkesutbildningen inom samhällsbyggnadssektorn: en förstudie2020Report (Other (popular science, discussion, etc.))
    Abstract [sv]

    Att digitaliseringen innebär omvälvande förändringar i hela arbetslivet råder det ingen tvekan om. Den decentraliserade samhällsbyggnadssektorn med dess omfattande samverkan mellan olika aktörer är inget undantag. Det gäller att yrkesverksamma på alla nivåer har en grundläggande kompetens och beredskap att ta till sig och tillämpa nya metoder, verktyg och processer. Digitaliseringen ger nya möjligheter till förbättrad samverkan i byggprojekten. Mot den bakgrunden beslutade tre yrkesnämnder inom bygg- och installationsbranschen att göra en gemensam kartläggning över vad som händer i branschen och närmare studera elevers förutsättningar och yrkeslärares möjligheter att understödja utvecklingen i branschen.

    Download full text (pdf)
    Digitaliseringiyrkesutbildningen
  • 49.
    Persson, Mats
    et al.
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Jonsson, Rolf
    Fölster, Stefan
    Byggkostnader för bostäder i Sverige jämfört med andra länder: Förstudie2020Report (Other (popular science, discussion, etc.))
    Abstract [sv]

    I denna förstudie har kunskapsläge och förutsättningar för en kartläggning och jämförelse av kostnader i bostadsbyggnadsprojekt i Europa studerats för att se om det finns förklaringar av hur skillnader i lagstiftning och samhällets reglering, styrning, skatter, subventioner, material, klimat och kultur påverkar produktionskostnaden för byggprojekt och därmed också boendekostnaden för den boende. 

    För en fortsatt studie krävs: Etablerade kontakter med projektkunniga i de undersökta länderna Noggranna förberedelser före studiebesök och intervjuer Tydlig dokumentation och insamling av underlag Bearbetning och jämförelse av data Presentation av resultat

    Download full text (pdf)
    ByggkostnaderEUförstudie
  • 50.
    Persson, Mats
    et al.
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Siggelsten, Simon
    Malmö University, Faculty of Technology and Society (TS), Department of Materials Science and Applied Mathematics (MTM).
    Brander, Peter
    Boverket - The National Board of Housing, Building and Planning .
    Ventilation in Sweden - state of the art2021Conference paper (Other academic)
    Abstract [en]

    The National Board of Housing, Building and Planning (Boverket) has initialized a compilation of knowledge about the current situation in Swedish ventilation. The purpose being to summarize an as broad and correct understanding as possible of who the industry is, what rules that applies, where there are knowledge centres and what development needs are required to be supported for the industry. Ventilation systems has developed from simple to high-tech sensor-controlled with the main task of removing unwanted airborne substances (e.g. odours) and excess heat, in an energy efficient way. 

    Data was collected from stakeholders dealing with ventilation and indoor climate. A group of knowledgably consultants and scientists have collected information, analysed different aspects of ventilation, and presents the results in a report available in Swedish. 

    Ventilation situation in residential buildings varies from other types of buildings that house widely differing businesses. Different types of activities place different demands on the buildings' air quality, thermal comfort, etc. For the operation of a building, it is important to clarify the conditions and requirements that determine needed airflow. Quite small, oversights and mistakes can ruin the possibilities for the ventilation system's to function properly. 

    The main outcome of the project is the presentation of the state-of-the-art position of ventilation in Sweden. Ventilation is a vital part of the building's system and the prerequisites for correct ventilation function. Seemingly, banal user behaviours can have a major impact on the control of the indoor climate. 

    Regulations and rules that govern and apply for ventilation and indoor climate comes from a number of international, national organisations. More than ten Swedish authorities define regulations influencing ventilation. This affects how measurement and verification of indoor climate and ventilation can take place with different methods and instruments depending on which properties are studied. 

    The survey contributes to the dissemination of knowledge about the industry, stakeholders, technology, systems, construction, controls, operation and maintenance as well as research and development. 

    Download full text (pdf)
    VentilationinSweden
12 1 - 50 of 60
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • 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