In this diploma work the approach of determining the required amount of reinforcement in slabs exposed to pure tension is processed, on behalf of Ramböll Uppsala. It is a well-known problem in the industry that there are uncertainties in the determining of the amount of crack reinforcement, especially for structures exposed to pure tension. Cracking caused during the time of dehydration in concrete slabs is the most common defect according to statistics made by CBI[1], which provides numbers as high as 35 % of all the defects caused on slabs are generated by cracks. Comparisons between Sweden's former national standard BBK 04, Building Regulations for concrete structures due to restrained forces of shrinkage, and the current European standard Eurocode 2 are carried out through theoretical studies and concludes with several examples of calculations. Rigorous calculations of both standards, BBK 04 and Eurocode 2 with application of the national annex in Sweden and Denmark are performed.

The purpose of this study was to build a database for point-bearing piles in dense noncohesive soil, predominantly moraine. Further, the database was analysed and areas with difficult geotechnical conditions was identified.The database includes for point-bearing piles driven to refusal in moraine. Piles with mainly shaft friction have been excluded. Only concrete piles have been included. Geographically the database covers almost all geotechnical conditions of Sweden.

If you have access to wood, a wood burning boiler is a cheap way to heat your home, but it is certainly not the most convenient option. Wood requires many operations and management, which takes time. One way to reduce this workload is to have a modern boiler with automatic ignition. Enertech/CTC has a desire to create an accessory with automatic ignition to a modern wood burning boiler. Today there is no boiler on the market that can ignite firewood automatically without the introduction of paper and sticks.

This bachelor?s thesis examines contemporary views on Angels and how two modern writerson the subject introduce these beings. Presenting a comparison between the two modernwriters, and also, as a context, contrasting them to some more traditional biblical as well assome modern Christian material, some of the beliefs surrounding Angels are discussed. Thecontemporary views and beliefs are analyzed through a model on how globalization affectspopular religion of today..

AbstractConcrete foundation slabs are usually exposed to unilateral drying during the curing process. The unilateral drying causes an axial shrinkage and a concave curvature of the construction. The curvature results from the fact that the upper part of the slab is drying and shrinking faster than the lower part. This is called gradient shrinkage.A problem occurs when the slab is considered fully restrained by adjoining structural parts. The deformations caused by axial contraction due to the constant part of the shrinkage and the curvature caused by gradient shrinkage of the slab are then prevented by the fact that the slab is fully restrained.

I min uppsats har jag haft som syfte att studera hur Matrixtrilogin kan betraktas som en modern messiasberättelse. För att svara på syftet har jag studerat vilka paralleller som finns mellan huvudkaraktären Neo, och den kristna messiasberättelsen. Jag har även undersökt vilka bibliska karaktärer som finns symboliserade, samt vilka bibliskt symboliska händelser som finns representerade, i Matrixfilmerna. Uppsatsen baserar sig på en kvalitativ formell textanalys. Genom närläsning av Matrixtrilogin, har jag utifrån en hermeneutisk utgångspunkt tolkat innehållet för att svara på de frågor som ställts i uppsatsen.

Betong är vårt vanligaste byggmaterial men cement står globalt sett för 5 % av CO2-emissionerna. Med detta som bakgrund så har CBI Betonginstitutet anordnat en tävling, där målet är att nå den högsta tryckhållfasthet i en resurssnål betong, med enbart 200 kg cement per m3. Syftet med denna rapport är att utvärdera tävlingen, vilket har utförts genom en omfattande litteraturstudie. En första analys av de olika betongrecepten medförde att olika grupperingar kunde urskiljas. Ur dessa fanns det tre stycken vars resultat var väldigt bra. ? Concrete Innovation Centre, som med ett lågt vct, stora mängder granulerad masugnsslagg (81 %) och lite silikastoft (5 %), uppnådde en tryckhållfasthet på 80 MPa vid 28 dygn och 95 MPa vid 56 dygn. ? CBI Stockholm, som genom användandet av ulltrafint filler och silikastoft (4,8 %), uppnådde en tryckhållfasthet på 84 MPa vid 28 dygn och 98 MPa vid 56 dygn. ? Thomas Concrete Group som genom att ersätta cementet med en medelmåttig mängd granulerad masugnsslagg (54 %), liten mängd flygaska (9 %), kalkfiller och silikastoft (5 %), uppnådde en tryckhållfasthet på 94 MPa vid 28 dygn och 98 MPa vid 56 dygn. Det finns således tre recept som vidare studier kan vara rättfärdigade på, de tre ovan nämnda. Det bör tilläggas att en imponerande tryckhållfasthet på nästan 100 MPa, kan uppnås i en betong med enbart 200 kg cement per m3. .

When constructing a building, a number of aspects must be harmonized in order for it to fulfill requirements ? a building must fulfill requirements such a load-bearing, conservation of energy and a good indoor environment by means of, among other things, moisture proofing .Moisture problems in buildings can affect health negatively. As we are increasingly staying in indoors, demands on a good indoor environment are higher.This work starts with examining moisture problems in slab-on-ground solutions, and then links the various scenarios to moisture problems in a concrete slab of a real building. The building with moisture problems is located in Årby by in Borlänge and moisture damage was found in the slab at an apartment adjoining wall.By reviewing literature written within the field of moisture problem, making hand calculations and modeling in the program Comsol Multiphysics, judgments are made to find explanations as to why the rise of moisture occurred in the building in Årby by.Generally, the following guidelines may be used to reduce the risk of moisture problems in slab-on-ground constructions:Drying of construction moisture before laying the floor material.Using draining layer beneath the slab, to prevent capillary suction.Using insulation under the slab, partly for comfort and to establish the temperature difference between the ground and the concrete slab.Avoid direct contact between the wood and concrete, due to degradation and fouling smells that normally occurs.If necessary, use additional vapor barrier.In addition to the above, there are various methods for moisture-proof and moisture-monitoring by design or by the method ByggaF suited for the entire construction process various events..

Tryckhållfasthetsutveckling hos broar. En studie av svenska broar byggda under 1900-talet.

When constructing an industrial- or hall building, the most common framework materials thatis used are wood, steel or concrete. Due to an assignment from Byggnadstekniska Byrån ABhas a document been created that makes it possible to investigate how the final costs is af-fected by gapes in between elements and which used foundation. And this with steel as thematerial. The purpose with this essay is to investigate which is the most well fitted materialwhen constructing an industrial- or hall building wood, steel or concrete. Information aboutthe different materials has been collected by litterateurs and by different internet pages.

The purpose of the paper is through a touristic view to see how the zoos have developed to modern zoss and interview Djurens Rätt and Skansen to see their view on "animal welfare". Another part of the paper is to see what the public thinks of animal welfare and if it's crucial when they choose a destination. We used a survey to see if the public has been influenced by any media in the aspect of their view of zoos. By seeing the evolution of zoos to the modern zoo, we can see how society had the power to influence. .

The study focuses the evil within human beings and evil actions against other humans and the human kind. The evil is defined as evil actions such as murder and actions in war. The questions asked is whether the evil has a face and if it is possible in that case to paint that kind of face. The medieval mural paintings in old churches include Cain murdering his brother Abel based on the Bible. The study also includes reliefs, sculptures in stone describing Cains´s murder of Abel and sculptures with the Massacre of the Innocents in Bethlehem according to the Bible.

Kedjor som äger sina egna butiker har en mer centraliserad styrning är butiker som ägs av handlare men ändå tillhör en kedja. De väletablerade butikskedjorna ICA, Coop och Axfood har en något mer modern styrning än de nyetablerade lågprisbutikerna Netto och Lidl. Detta beror främst på att modern styrning utgår från att lyssna mer på kunden vilket inte lågpriskedjorna är intresserade av då de istället har som strategi att lära kunderna att handla lågpris.

When constructing a building, a number of aspects must be harmonized in order for it to fulfill requirements ? a building must fulfill requirements such a load-bearing, conservation of energy and a good indoor environment by means of, among other things, moisture proofing .Moisture problems in buildings can affect health negatively. As we are increasingly staying in indoors, demands on a good indoor environment are higher.This work starts with examining moisture problems in slab-on-ground solutions, and then links the various scenarios to moisture problems in a concrete slab of a real building. The building with moisture problems is located in Årby by in Borlänge and moisture damage was found in the slab at an apartment adjoining wall.By reviewing literature written within the field of moisture problem, making hand calculations and modeling in the program Comsol Multiphysics, judgments are made to find explanations as to why the rise of moisture occurred in the building in Årby by.Generally, the following guidelines may be used to reduce the risk of moisture problems in slab-on-ground constructions:Drying of construction moisture before laying the floor material.Using draining layer beneath the slab, to prevent capillary suction.Using insulation under the slab, partly for comfort and to establish the temperature difference between the ground and the concrete slab.Avoid direct contact between the wood and concrete, due to degradation and fouling smells that normally occurs.If necessary, use additional vapor barrier.In addition to the above, there are various methods for moisture-proof and moisture-monitoring by design or by the method ByggaF suited for the entire construction process various events..

Uppsatsen handlar om hur en äldre byggnad av torp-liknande slag kan renoveras till att bli enbyggnad av modern standard. Detta görs genom att stegvis gå igenom de delar som behöveruppdateras och ge exempel på hur de kan förbättras för att nå upp till en modern standard.Samtidigt har även två modeller gjorts. En i ?Revit Structure? över byggnadens konstruktion,men även en i ?Revit Architecture? där en möjlig ny planlösning ges. Till slut mynnar detta uti ett förlag till ny planlösning som innehåller alla de beståndsdelar som behövs för att skapa enmodern bostad.