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This report shows how an non-insulated sheet metal roof behaves when it is exposed to varying temperatures. What happens is that the sheet metal expands and contracts which can lead to damages in the sheet metal fasteners. This causes problems when the roof is ment to stabilize for horisontal forces on the building. This report focuses on a specific construction type that is the most commun in the

The wind effects on high rise buildings were studied by finding and reading books, articles and studying equations. This was done to calculate the first natural frequency of high rise buildings, wind induced acceleration on high rise buildings and how the comfort criteria of acceleration performing on high rise buildings acts on human bodies living in the building. The buildings that were studied

Composite steel and concrete structures can resist a fire, mostly because of the thermal properties of the concrete. This report examines a composite beam, HPC-beam, when the beam is exposed to standardized fire. The beam is designed after Eurocode and the Swedish national document. The material parameters are taken from the same sources. These material parameters are used as input data for applic

Syftet med rapporten är att kartlägga och analysera hur värdeflödet i samband med platsgjutning av en stomme fungerar idag, med avseende på bland annat arbetsfördelning, genomloppstider, resursanvändning, mellanlagring och informationsflöde. En utvärdering görs av hur metoderna Activity sampling och Värdeflödesanalys fungerar för kartläggning inom byggbranschen och hur resultaten från studier med

Tall buildings have lately become a problem to design because of the development of light weighted steel frames and wind loads. An important task of a structure is the absorption of horizontal loads and the capacity to transfer the resulting moment down into the ground. It is the engineer’s task to make sure that the structure’s performance is sufficient when it comes to safety and serviceability.

Problems considering vibrations influence on comfort and health have been known for long and extensive efforts have been carried out to describe them. However, the appearance of these problems in the appliance of concrete slabs is a new phenomenon which started to arise due to the development of prestressing. For this thesis some of the existing knowledge has been applied to determine the maximal

This Master Thesis has been written in coliabaration with Modulenthus and Lund Institute of Teclnology. This thesis has two pm-poses: To show how a VR-mode! best can be created by evaluating different programs and to examine the compatibility between ADT and Archicad.

Dagens byggande av bostäder präglas av ökade krav på kortare byggtider, lägre byggkostnader och en jämn och hög kvalitet. Miljötänkande har också fått en allt högre prioritet. De ökade kraven har medfört olika typer av satsningar på att förbättra material, teknik och metoder för att bygga villor. En tydlig linje i denna utveckling har varit en ökad användning av förtillverkade komponenter och elem

The Glass Ceiling is a proven and documented phenomenon for several countries. This paper tries to trace its existence of changing behaviour in the gender pay gap across the income distribution between the periods 1970 and 1990, and through a selection of professions for the highly educated individuals. This will show at the same time the transformation suffered by Swedish labor market between tho

Trenden för miniatyrisering av mikroelektronik närmar sig gränsen för vad som är möjligt att uppnå med konventionell kiselteknologi. En teknik, med potential att pressa utveckling mot allt mindre komponenter, är nanotrådstransistorer. I detta examensarbete studeras implementering av dessa transistorer i digitala kretsar. En fullständig analys av en krets innebär flera påföljande steg, innefattandThe continuing trend of electronic miniaturization is approaching a critical limit for conventional silicon based technology. Transistors based on nanowires are an interesting concept that might extend this trend deeper into the nano-scale domain. In this work, the usage of nanowire-based transistors is studied in the context of digital circuit design. The authors propose a complete workflow from

I det moderna affärsklimatet är det svårt att klara sig utan någon sorts informations eller affärssystem. En av de vanligaste typerna av dessa system är ERP-system, som ämnar stödja företags verksamhet genom att samla all information på en plats. Att arbeta med implementering av ERP-system är ett stort och svårt åtagande som går ofta fel. Syftet med denna uppsats är att ta reda på varför detta ske

Denna uppsats är en studie av Sanxiadammen vid Yichang i den kinesiska Hubeiprovinsen. Jag redogör inledningsvis för hur projektet började och slutade, i syfte att ge läsaren de basfakta som behövs för att lättare komma in i den huvudsakliga texten. Även miljöpåverkan som ett resultat av de miljöfarliga utsläpp som förekommit i Yangzifloden har studerats för att bättre förstå konsekvenserna av damThis essay describes the effects that have come from the construction of the Sanxia Dam, Yichang, Hubei province. I begin with a brief description of how the dam project started and ended, in order to give the reader the basic knowledge that is needed for a better understanding while reading the rest of the text. Focus lies on the project's impact on the environment, such as the pollution of t

Bone scintigraphy images are used to investigate the presence of metastases in patients with prostate cancer. An analysis of these images indicates the proportion of cancer in the bones; the Bone Scan Index (BSI). This value is an important prognostic factor used to predict the future for the patients. It is common to extend the examination with a combination of SPECT and CT images to be able to s

The industry of engineered nanoparticles (ENPs) has grown rapidly during the last decade, with for example carbon nanotubes (CNTs) incorporated in high-tech composites and nanosized TiO2 in sunscreens and paint. With an increased potential of human exposure to these novel ENPs, especially during production and handling of nanoparticles, the concern of risks when people become exposed has increased