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2308 Uppsatser om Concrete construction - Sida 12 av 154

Manusutveckling av digitala läromedelsapplikationer i matematik : En studie av samtida pedagogisk forskning och utveckling av applikationsmanus för matematikämnet i gymnasieskolan

In a world where digital media is becoming a greater part of people?s everyday and working lives it is plausible to assume that the upcoming generation of pupils expect the teaching media to adapt thereafter. It is this assumption of an increased demand that Natur & Kultur is hoping to be able to meet. This thesis has been a stage in the process of producing digital material in the subject of mathematics for high school students. Specifically the aims of this thesis have been to make a rough description of the largest competitive companies? products within the same market, explore and put together a brief theoretical foundation of contemporary research and produce concrete examples of ideas for digital applications.

Hållbarhetscertifiering av stadsdelar : En studie av BREEAM Communities praktiska tillämpning i svensk stadsbyggnad

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.

En r?rspis: och hur den ?r uppbyggd

This thesis researches the construction of the Swedish masonry heater called r?rspis. A r?rspis has an inner smoke channel system that stores heat and it was developed in the early 19th century alongside the Swedish kakelugn (tiled stove). Unlike the tiled stove, the R?rspis was commonly found in simpler environments and is part of the cultural her itage of the rural population.

Visualisering av augmented reality i byggbranschen

Augmented reality is a technology thatcombines the perception and interaction ofvirtual objects with the real world. Itcan allow a user to visually see computergenerated models and informationinteracting with the real world through ahand held device such as a tabletcomputer. This opens up a range ofpossibilities, especially in theconstruction sector. A construction siteis permanently changing and the need forprecise and updated information iscrucial. The ability to enhance the realworld with virtual objects and informationmay make many plans printed on paperabsolete.This report describes how workers in theconstruction sector would benefit fromusing augmented reality on a tablet innumerous situations and the technologyneeded to achieve AR on a tablet.

EUropa och den konstruerade identiteten - En analys av den hegemoniska diskursen

In this thesis the construction of identity within the EU is discussed. A thesis problem in three dimensions is used to explain the purpose of the construction, its realization and the consequences of such identity. These aspects show the complexity of the problems related to identity construction on a structural level.By using a post-modern and a social constructivist theoretical approach identity is presented as socially constructed by discourse. The theory of discourse makes it possible to analyze the development of an identity forming discourse within the EU and its status today.With an approach inspired by critical theory, we use discourse analysis as a methodological tool to illustrate the ideas that govern discourse, and in what way it is related to the social reality.The analysis states that the purpose of identity constructing is the striving for legitimacy. Without identification, the legitimacy is threatened.

Effektivisering av EPC projekt : Fallstudie Johnson Controls

In todays society the demand on companies to deliver better project management is crucial for them to survive. The higher demands from clients make older project management weak and unreliable. In the constructions sector more and more companies are created and the competition is higher than ever. The clients are aware of the higher competition in the construction sector. This has resulted that construction companies must now make their project management more efficient to create better projects and better relationship with clients. The purpose of this thesis arose from this problem in the construction sector.

Framtagning av ny lager layout hos Allied Motion Stockholm AB - En studie om effektivisering av lager och intern materialflöde

This report is about the shear force design of reinforced concrete according to Europe?s common dimension rules, Eurocode. The purpose is to describe the calculation procedure and the background to the formulas and expressions that occurs. Furthermore results from different calculation methods (hand calculations and computer calculations) will be compared to see how they differ.The goal with this is to go through the parts of Eurocode dealing with shear force and that this will lead to a clear review of these. You should also be able to see how results and the calculation procedure differ between different calculation methods.

Tvärkraftsdimensionering av armerad betong : En utredning av beräkningsförfarandet

This report is about the shear force design of reinforced concrete according to Europe?s common dimension rules, Eurocode. The purpose is to describe the calculation procedure and the background to the formulas and expressions that occurs. Furthermore results from different calculation methods (hand calculations and computer calculations) will be compared to see how they differ.The goal with this is to go through the parts of Eurocode dealing with shear force and that this will lead to a clear review of these. You should also be able to see how results and the calculation procedure differ between different calculation methods.

Kvalitetssäkring:En analys av egenkontroll

A degree thesis about quality control and assurance in construction. Made in cooperation with Wästbygg. An analysis was made of the self-monitoring control that is conducted during the construction. The data was collected from interviews from personnel employed by Wäsbygg as either work-leader, project-manager or quality- and environmental-coordinator. During the study there was also a review of the literature in the subject.

Tesauruskonstruktion i ämnet landskapsplanering

This research paper is a thesaurus construction for the interdisciplinary subject of landscape planning. The personnel doing the indexing of documents at the Swedish University of Agricultural Sciences had earlier expressed a need for such a work within the fields of Landscape Architecture and Landscape Engineering. However our objective was not to create a complete thesaurus, but instead a basic construction which the personnel at the Agricultural University could expand upon. The actual construction is based upon ISO 2788-1986, Documentation Ð Guidelines for the establishment and development of monolingual thesauri, and Aitchison, Gilchrist and BawdenÕs Thesaurus Construction (1997). The line of enquiry taken has dealt with the problems relating to the collection, selection and control of indexing terms.

Förstärkning av betongkonstruktioner med kolfiber med avseende på olika brottstyper

The purpose of this report is to simplify the process of designing carbon fiber strengthening for existing Concrete constructions, specifically beams. The intention has been to establish a flow chart containing information on the necessary testing and calculations for the design, to as far degree it is possible satisfy the requirements stipulated by Swedish and by extension, European authorities.To do this the report will examine a parking garage situated underground by Akademiska Sjukhuset, Uppsala. The parking garage was built in the mid-seventies, and has in recent years been subjected to a greater load than designed for by the construction of a road on top of it. FEM-Design has been used to obtain the internalforces of the beams and thereby determine whether they are in need of strengthening or not and thereafter design the strengthening according to Täljsten (2006) with some corrections from Täljsten (2011) due to new regulations.The result of this report is that the flow chart used is viable to design carbon fiber strengthening, atleast with the conditions met in our reference project.The conclusion drawn after working with this report is that there is a need for a clear standard for carbon fiber strengthening , preferably a standard that can be used throughout Europe..

Strategisk analys av den svenska byggbranschen- En studie av JM, NCC, PEAB OCH SKANSKA

Background: The construction industry is Sweden?s single most important industry branch with a significant influence on Sweden?s wealth. The political restrictions that once controlled the industry are today almost gone. This combined with an unbalanced supply and demand situation on the Swedish constructions market, caused by urbanisation, has led to increased pressure on the Swedish construction companies who now are forced to find new methods in their struggle to contain or increase their competitive advantage. Purpose: The purpose of this thesis is to survey: which strategic variables are of great importance in today?s Swedish construction industry with focus on the four main actors, JM, NCC, PEAB and Skanska.

Villkor under garantitid i entreprenadförsäkring, en jämförande studie.

In Sweden there is no legal regulation for the obligations and responsibilities between the contracting parties within the construction, civil engineering and installation sector. To clarify uncertainties regarding the liability, actors from theses sectors have agreed upon a voluntary regulation, called the General Conditions of Contract.When insurance companies want to enter the Swedish construction insurance market, they face a regulatory framework that not only regulates the construction market, it also imposes requirements on terms and conditions that must be included in the construction insurance. These terms are perceived as ambiguities and create difficulties and inhibit the ability for these insurance companies to offer competitive insurances. One of the terms that create these difficulties is the guarantee period, which is period of time starting from handing over the construction project to the employer, during this period the contractor still has the responsibility for the construction project. The guarantee period regulated by the General Condition of Contracts differs from the international use of the term both in length and in content.

Tryckhållfasthet för resurssnål betong : Utvärdering i tävling av högsta tryckhållfasthet för resurssnål betong

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. .

?Vård i annans hem? - användning av arbetsmaterialet i Huddinge kommuns hemtjänst/boendestöd och personlig assistans

AbstractThe importance of good construction planning affects the final costs of the production and the timing of the project. Planning for building projects has been studied with the aim of identifying how three week planning appears in the construction industry today.A case study has been conducted in Navisworks Simulate to assess whether the software is suitable to connect the task schedule with the BIM model to create a 4D model. 4D models are used for performing 4D construction simulation to visualize the project. In order to use the benefits of the model, investment in equipment and software is required. This means higher costs for the companies.

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