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2080 Uppsatser om Timber construction - Sida 44 av 139
Solenergi på Kvarnholmen
In recent years it has become more and more evident that man has contributed to much of the climate changes that have taken place during the last century. A major challenge today is to reduce emissions and energy usage at the same time as the global population is growing. To contribute to a better environment, Stockholms Stad has set at target of becoming fossil fuel free by the year of 2050. The construction of new districts is done with this goal in mind; energy efficiency and renewable energy sources are examples of methods to achieve this.Solar energy is considered to be a sustainable energy source and the most common techniques to harvest solar energy in Sweden are solar cells and solar collectors which produce electricity and heat respectively. This report aims to investigate whether an investment in any of these systems would prove to be economically beneficial at Kvarnholmen, a district under construction in eastern Nacka, Stockholm.Since the finished blueprints only cover a small portion of Kvarnholmen, the report examines the possibilities for a house where construction has already begun, Nya Kvarnen.
Postningsoptimering vid sönderdelning av fura vid Säters Ångsåg :
The aim of this project is to optimise the sawing patterns used for sawing Scots pine at Säters Ångsåg AB. The thesis has a theoretical approach and does not claim to be fully applicable in a practical point of view.
The input used in this project is last year?s sales volumes and prices of sawn products. The input of the timber is collected from the database ?VIOL?.
GIS-stöd för tunga rundvirkestransporter på väg
För att framföra en timmerlastbil med 74 tons bruttovikt i svensk trafik,krävs ett tillstånd från Trafikverket. Tillståndet består av ett dokument somvisar vilka vägar och broar fordonet får trafikera och vilka regler som gällernär man kör lastbilen.Skogsbolaget Sveaskog startade ett examensarbete med syfte att skapamöjlighet att i realtid presentera för lastbilsföraren vilka vägar och broarsom är en del av transportdispensen. Detta skulle ske genom att utveckla ettkartstöd för lastbilens fordonsdator med anslutning till GPS för attvisualisera dispensdokumentet med de angivna vägsträckorna och broarna.Resultatet av examensarbetet är ett kartstöd som använder tjänster frånArcGIS Online för att presentera geografisk information för användaren.Bakgrundskartan består av en grundkarta från ArcGIS Online. Övergrundkartan ligger ett GIS-skikt med vägar och ett annat skikt med broar.Information om huruvida fordonet för närvarande färdas på en väg somingår i tillståndet eller inte, samt information om regler som gäller för broarpå vägavsnittet, presenteras för föraren i realtid. Denna informationuppdateras vid varje uppdatering av GPS-positionen..
Ombyggnad av flerbostadshus : Hur påverkas hyresgästerna av en ombyggnad
During the years 1950-75 was the construction of building apartments in high speed. A rapidly growing reconstruction requirement is the consequence of the rapid construction speed in these years. The technical lifetime of the different parts of the buildings is about to end and the needs for reconstruction is huge. One of Sweden's national environmental objectives is to reduce the urge of energy in buildings. This calls for radical measures to implement energy efficiency of existing assistance particularly in the assistance that is now facing reconstruction.
Planering och val av metod i byggprojekt
This report describes the construction process and the aspects that should be taken into consideration. It includes models of decision and how these can be used in practice. Planning of a building project is very important for a successful execution. This will be the foundation of problems that will occur during the production. In the planning process people with different positions, search for the best suitable building methods.
Ekot från djupaste Afrika : En kritisk diskursanalys av nyhetsprogrammet Ekots gestaltning av konflikten i Goma, Demokratiska Republiken Kongo.
This is a critical discourse analysis of the conformation of the conflict in Goma, Democratic Republic of the Congo, as constructed by Ekot, a news-show on Radio Sweden. The ambition of this bachelor thesis is to examine the production of a Congolese conflict for a Swedish audience and to find out how the construction differences with and without a reporter in the field. To obtain this purpose the narrative is studied as well as the use of voices that define the conflict. The construction of proximity between Swedish audience and the Congolese event and the meaning of sound to stabilize the formation of discourse within foreign news is examined as well. To conform and explain foreign news it must be put in relation to a starting point.
Analys av värdeoptimeringen i justerverket : Rörvik Timber
I takt med konkurrensen ökar på marknaden väljer många sågverk att i allt högre utsträckning kundanpassa sin produktion mot de krav kunderna ställer på produkterna. Sågverkens produktion bör vara inriktad på att skapa ett så högt värdeutbyte som möjligt där virkets egenskaper och produktionsanläggningens förutsättningar ställs mot de kundönskemål som finns. (Lycken, 2000)
I sågverkets justerverk sorteras trävarorna i olika sorteringsklasser, även kallat kvalitetsklasser, samt kapas i exakta längder. För att kunna skapa ett högt värdeutbyte krävs det kunskap dels om vilka av träets egenskaper som är avgörande för värdet med dagens sorteringssystem och dels en insikt i hur volym- och värdeandelar ser ut för olika produkter samt hur olika sorteringsregler styr värdeutbytet.
Sedan början av år 2008 har Rörvik Timber Rörvik AB ett BoardMaster-system i sågverkets justerverk som använder färgkamerateknik för att värdeoptimera trävarorna. Examensarbetets syfte är att analysera värdeoptimeringen av trävarorna i justerverket vid sågverket i Rörvik.
10-åring spårlöst borta : En studie om hur försvunna barn konstrueras i svensk press
The purpose of our study was to examine how missing children are portrayed in media. We wanted to see if there are any recurring story patterns and characters in the texts. We also wanted to examine how the relationship between children and adults are framed and which comprehensive view of children is mediated in journalistic texts.Our questions were: how do Swedish newspapers write about missing children? Which narrative pattern are there in the texts? How are children and adults represented in the texts? What relationship between children and adults are made visible in the texts? What a comprehensive approach to children is constructed in the texts?For this study, we used the media discourse, theories of representation, stereotypes and characters. And theories of narrative, dramatic turns and opposites.We chose to make three case studies in which children suddenly disappeared, the case of Bobby Äikiä, the case of Engla Höglund and the case of Sebastian Hedman.
Energianalys av tryckluftsystem : så kan Billerud Skärblacka AB spara energi på tryckluft
Compressed air is a low efficiency media, and is thus very expensive to produce. This thesis work began by mind mapping how to create savings on the compressed air system at Billerud Skärblacka AB. Certain issues have been chosen for further studies.In order to identify the consumption of compressed air at PM 8 and 9, several measurements were made. At PM 8 there were not found any pressure drop, only large pressure variations for short periods of time. The causes of these pressure variations were not established.
Konstruktion av steghållare till brandbilar
High demands are set on all equipment used in emergency service work, where small margins can be the distinguishing factor between life and death during a rescue operation. It is important that tools such as ladders quickly and easily can be dismounted from a vehicle and still satisfy the regulatory requirements for securing loads during transport. The existing solution for getting ladders down from the roof of a fire engine requires a large manual effort from the user in an ergonomically unsound posture.In this degree project a new ladder holder is developed with focus on the user to solve the ergonomic problems and at the same time create a more compact design that can be adapted to several different types of ladders. After an initial pre-study with user-interviews and measurement of forces and distances a set of requirements was formulated that came to govern the project's direction. Creative methods were used to generate concepts that improved the function and through design solutions, calculations and testing in CAD a base for manufacturing of a new product was created.The result is a completely new type of ladder holder that minimizes the user's manual effort and simplifies the securing of ladders in the holder.
Samverkanspelare i icke bärande fasadelement
AbstractThe tests work is about the subject "synergism of steel and concrete."The construction sector is in a strong competition and the different companies in the PrefabMarket has ever tried to develop new design solutions that are efficient and environmentallyfriendly.The purpose of this report is to highlight different aspects of interaction and size up a columndimension and to examine its efficiency and load capacity as Eurocode 3 and Eurocode 4. A sizing chart that describes the relationship between the torque and normal force shouldalso be made of the interaction . .
Prefabricerade Passivhus
European Union has made a new decision that all new built houses by 2020 shallbe near-zero energy houses. Boverket?s definition of near-zero energy housesintends buildings with good energy performance in which a proportion of theamount of energy that must be added to the building is made of renewable energy.Passive House is a set of requirements from FEBY designed to build energyefficient buildings. This is achieved by reducing loss of heat through the buildingenvelope and to take advantage of the passive heat from solar radiation,installation and heat sources like people living in the house.This project has been made with help of Anebyhus and one of their model houseshave been examined from the report?s issues, including Anebyhus?s energyperformance, requirements for the manufacturing and assembly, how theenvelope must be improved to fulfill the requirements for the Passive House andwhat energy calculation programs are available on the market.The report aims to provide solutions for energy efficient houses that are adaptedfor production of house building.Two visits to Anebyhus has been done to study their manufacture and assemblyof building elements.
Mek Stans 07
Mek Stans 07 is a machine developed for Tetra Pak in Lund as a 10p candidate theses project at Halmstad University. The commission behind the project involved development of a machine that punches holes in packages for the inspection division at Tetra Pak. The task for the machine was to facilitate the process of making openings for testing in the company?s other equipment.
Researches on different methods of cutting, types of automatization and possible designs were made. To implement the project a design and construction from the base where chosen.
En kartl?ggning av inv?ndiga f?nsterluckors utbredning och konstruktion
Interior window shutters can be found in historical buildings, but they are an uncommon occurrence in
modern buildings. In modern contemporary construction, large glass panels are often the ideal because
of increased light inflow and for architectural purposes. However, this can generate several negative
effects, such as increased energy loss, lack of privacy and high sunlight penetration. Problems that
window shutters could have accommodated historically.
This thesis identifies a lack of knowledge about interior window shutters in the Swedish building
stock.
Ämnestransport med grundvatten i hydrogeologiska typmiljöer
Certain types of waste, e.g. bottom ash originating from municipal solid waste incineration (MSWI bottom ash) can be used as road construction materials. A potential problem is the possibility of substances leaching out of the road and spreading in the surrounding groundwater.The aim of this master?s thesis is to conclude whether hydrogeological type settings can be employed to, based on local conditions, provide an estimate of the probable spreading of these substances in the surrounding groundwater, and whether certain types of soils can be identified as being less suitable for the localization of a MSWI bottom ash road. A hydrogeological type setting is defined as a mappable unit with similar hydrogeological properties.