The purpose of this bachelor degree thesis is to analyze technical issues associated with an implementation of a low sloping trash rack with narrow spacing. A hydropower plant in Umea?lven was used as a case study. The basis for the study was a model where trash racks were dimensioned for inclinations between 25 and 45 degrees. Corresponding head loss, durability and water speed through the rack were then determined for each inclination.

Glulam is a product that was engineered to make use of timber in a more efficient way. Bychoosing timber of similar quality and discarding natural defects during production, thedevelopment of a stronger cross-section is achieved.Carbon fiber is a relatively new material with a high tension capacity. This feature is used toexamine how the bending capacity of the Beams improve by adhering carbon fiber laminateson the lower edge of the BeamsThe strength of the material is tested with three experiments: carbon fiber on the bottom of thebeam (a), carbon fiber attached to the lower sides of the beam (b) and carbon fiber in thebeam, covered with a layer of wood (c)The results show that the first case, where the carbon fiber is attached to the bottom of thebeam, gave the best result with an increase in capacity of 59 % compared to the nonreinforcedcontrol. The other two cases also show an improvement in capacity, beam-type 3had a capacity increase of 47% and beam-type 4 increased with 25 %Tests were also made with glulam Beams reinforced with fiberglass, but these tests were notanalyzed in depth because the purpose was to compare the capacity to carbon fiber. Thisbeam improved its capacity by 40.3%.The tests show that carbon fiber as a reinforcement material for glulam is a good choice whenthere is a requirement for stronger cross-sections in both new production and renovation ofold buildings.

In this thesis tests has been performed on the pull strength of screws glued into glulam Beams.The experiment is based on the already approved method whereby the diameter of the drilled holes is the same as the screw outer diameter of 1 mm or bigger. The screws strength class shall not be less than 4.6 (EN ISO 898-1:1999, 1999).The difference in the experiments that were performed where that the drilled diameter were 1 mm smaller than the outer diameter of the screw so that the screw thread was worked into the wood.In the tests the gluing where made on M8 glulam Beams. The screws where drilled at and angel of 90°tangental to the fiber direction with a diameter of 7 mm. The gluing of the screws where made in three different depths and where later exposed to pulling forces. The results showed both pulling breaks and screw breaks when they reached their maximum capacity.

By using industrialized building, pre-installed modules can be delivered to the construction site where they are easily mounted. This method has many advantages compared to on-site manufacturing, for example, the precision during the production process should be much higher than building each wall and floor on site. Furthermore, the quick erection procedure when using prefabricated elements and the possibility to use weather protection has the advantage of not being dependent on weather conditions, and many other factors.Masonite Beams AB is a Swedish company (a member of the Norwegian company, Byggma ASA) with a relatively new technology using light weight Beams as bearing elements in the walls and a certain stiff board lamella slap which is mounted on the top of the floor structure creating an integrated stiff beam / board floor structure. The elements are flat which make it much easier to transport the elements from the factory to the building site where the building parts are easily mounted with special mounting stud.One of the main drawbacks of lightweight structure is the sound transmission. The main topic is low frequency annoyance, however the complex structural elements and their mutual sensitive connections other acoustical problems might appear.

The purpose of this of this essay is to explore the construction of a conservatory that is livable allyear around. When you build a conservatory there are several factors that need to be regardedthat usually are of no importance when you build a regular conservatory. The glassed facadeneeds to have a very good U-value and all the parts of the facade need to be isolated and theconstruction needs to prevent thermal bridges.In this essay we will start by looking at the shape of the conservatory. Due to the façade consistsof glass the conservatory will need to have a good ratio between the area and the façade so thatthe heat losses will be at a minimum. However, due to the fact that one of the sides of the façadeis connected to the warm house, you quickly realize that the shape of the conservatory is of noimportance.There are two common ways to build a foundation for a conservatory, a molded concretefoundation and isolated wooden Beams.

My diploma thesis has focused on creating a proposal for a Viking center in Stockholm that meets the international interest. A building dedicated solely to the Viking heritage. My ambition has been to give the Viking center an architecture that can serve as scenography for its exhibitions and to give the visitors a feel for the Vikings that they have been craving.  A boat-shaped building in tribute to the Vikings boat building skills with curved stems of equal height that gives a familiar silhouette to the city.  A wood building constructed of curved Beams and wood columns painted with tar..

This thesis was conducted at Linköping University and SAAB Aerostructures, Linköping, and focuses on the automation of flexible fixturing in machining applications. At Linköping University a project called "Koofix" is conducted with support from Strategiska stiftelsen and several manufacturing industries including SAAB Aerostructures. The purpose of this project is to develop a more cost-effective, flexible, technique for fixation of workpieces during processing and assembly.Fixtures are an important part during the machining process, especially if you process the parts with high accuracy. Today a large number of fixtures are used at SAAB and they would prefer to reduce the number of fixtures by using flexible fixtures instead. SAAB uses one fixture for each article and this result in a high fixture cost and it also takes time to design and construct a new fixture.There are several advantages with using a flexible fixture such as that you can process workpieces with different length, height and thickness in the same fixture.

The Results of this thesis was the creation of two designed house variants with a module toall the apartments. In addition till the first module there are three other modules ofapartments that can be put in the houses if it so needs. The house are volume prefabricatedand are placed on site in a way that it create an enclosure of the area which faces against thenature and car parks also lies hidden behind these houses.For the actual structure, a cross beam was created to carry the floor above and it is supportby all four walls. The structure between the first and the second floor has no "syll" butinstead there are two differently alternative to linking the floors in order so that it will notmove. The reason with this solution was that there will not be any subsidence when theforces from above are pressed down ward.

In connection with the property crises in many countries, caused by the financial crises, people are now more aware of the risks involved in poor property-investments. The unusually cold winters along with extreme prices of electricity in Sweden in recent years has also contributed to increased interest in energy-efficient buildings.The process of developing a modern family home in Kiruna, Sweden is presented the first part of this paper. The house has been designed to withstand very high stresses from snow, low energy consumption as well as a high standard of living comfort. Aspects of the house covered here involves everything from construction, heating and ventilation to sanitation. Each of these areas is presented based on their underlying, scientific methods or theories.

This report describes a new foundation method and compares it with a traditional founding of concrete. This new method is called the Koljern technique and uses cellular glass which is called Foamglas. The Foamglas is compounded to founding elements by lightweight steel Beams. Foamglas is an insulation material with high compressive strength, and is rot, insect, vermin and acid proof. The cellular glass is also fire proof and watertight, which makes it a very good construction material.The report contains a study of a number of cases for which the Koljern technique is compared with a foundation of concrete.

Med Tommy Persson kvalitets- och produktchef vid Masonite Beams AB i Rundvik diskuterades problemet kring infästning av väggelement med hög färdighetsgrad till grunden. Det bestämdes att arbetet skulle fokusera på en- och tvåbostadshus och att endast fenomenet stjälpning skulle beaktas.Lastfördelningen gjordes enligt vad Klas Nyman skrivit i sitt examensarbete Tredimensionella effekter vid horisontalstabilisering av volymbyggda trähus. Beräkningar av lyftkraft gjordes enligt den plastiska metoden med syllen förankrad mot lyft medan frontregeln inte är förankrad mot lyftning som Bo Källsner och Ulf Arne Girhammar beskriver i sin bok Horisontalstabilisering av träregelstommar. För beräkning av skruvars bärförmåga tillämpades Eurokod 5. För beräkning av 5-percentilsvärden från provning tillämpades SS-EN 14358:2006 Träkonstruktioner.Resultat; de två studerade fästmetodernas dimensionerande bärförmåga är 1.61 kN och 1,23 kN, lyftkraften i syllen är i storleksordningen 3-19 kN/m.Rapporten kan ses som en fingervisning på hur stora lyftkrafter som uppstår i syllen när det blåser och ett alternativ på hur man ska beräkna dessa lyftkrafter.

Den generella svenska byggprocessen idag är inte utformad för att hantera hela processen som ett system, vilket innebär att förändringar krävs inom såväl processen som dess styrning. Inom bostadsbyggande är produktivitetsutvecklingen betydligt lägre än i tillverkningsindustrin och man brottas med bristande samarbete mellan aktörer, svagt engagemang, en fragmenterande byggprocess och bristande helhetssyn. Att skapa maximalt värde för kunden och minimera slöserier är grundläggande för ?lean production? och ?Toyota Production System?, TPS, två av tillverkningsindustrins mest framgångsrika processfilosofier.För att uppnå ett effektivt och fungerande helhetskoncept bör industriellt byggande behandlas med ett systemtänkande, baserat på långsiktiga och kontinuerliga processer med fokus på kunderna. Inom systemtänkandet bör processer och metoder struktureras, teknik standardiseras och kunskap återförs till processerna.MFB, Masonite Flexibla Byggsystem, är ett byggsystem för industriellt byggande med hög prefabriceringsgrad där andelen montagearbete på byggarbetsplats underlättas och minimeras.

The degree project was made forZetterbergs Industri AB. The company is market leading in Europe in the heavyvehicle industry, designing and building body systems for trucks.In their line of products is the hook lift called Livab, a flexible and uniqueproduct. The hook lift is often demanded by customers because its special ability tobe able to operate in situations with low roof clearance. The main operation principleof the hook lift can be described as a truck stand, laid down.There are two main versions of the hook lift Livab, AL 26 and AL 32. These are ofdifferent load capacity, 17 and 25 metric tons of gross weight respectively.

Masonites flexibla byggsystem, är ett byggsystem utvecklat av Masonites Beams AB för flervåningshus, bostäder och kontor i trä.  System är anpassat så att det i största möjliga utsträckning går att använda sig av prefabricerade element direkt från fabrik, för att sedan hopfogas med mekaniska förband på byggarbetsplatsen.Masonites förslag på en infästning mellan bärande väggar är utformad som en montagedubb vilken förs ned i ett hål i underliggande väggelement. Montaget av dubben fungerade inte önskvärt, och det finns tveksamheter i montagedubbens förmåga att ta upp vindinducerande krafter.Examensarbetet syftar till att utforma och dimensionera ett nytt väggbeslag till Masonites flexibla byggsystem där snabbt montage av beslaget är viktigt. Iden är att såga en kontinuerlig slits i väggelementen som man sedan fäster plåtar som skruvas fast i det övre- respektive det undre väggelementet. Skruven som används är en självborrande skruv för att slippa förborrning av plåten och väggelementet.Reglerna i Eurokod 3 och 5 ligger till grund för beräkningarna av beslaget och lastnedräkningen av ett 8-våningshus är enligt BKR. Lämplig indata till lastnedräkningen gjordes i samråd med erfaren konstruktör och inblandade i MFB från Masonite.

This candidate.?s work includes designing of a house with it.?s structural components andinstallations. The house had to be actual with Building Regulations (Boverkets Byggregler).Beside designing of all the crucial systems necessary for completing of claimed regulations evenan optional topic within building engineering had to be chosen.The task included designing of heating, ventilation, sanitation and electricity systems. Structuralengineering models has been made in compliance with Eurocodes. Materials for facades, floorsand roof were chosen and evaluated.As recessed portion of the work, evaluating of possibilities in designing of a glass roof waschosen.