<p>This report will try to evaluate the use of rented concrete casting moulds, which are used to build walls and system of joists. The evaluation is only examining the economical aspects.</p><p>The cost of using concrete casting moulds is a big part of the total production expenses. Therefore it is important that the calculated price not exceeds the final costs of the casting moulds. The calculated price is the price used in the process of making an offer.</p><p>The evaluation consists of a comparison of the calculated price and the final costs for three building projects. It also evaluates the exploitation of the concrete casting moulds for each project.</p><p>The report is made by Sven Gynne and Anders Alexandersson at School of Engineering, Jonkoping University, in cooperation with PEAB Jonkoping. The evaluation is strictly based on the calculated price and final cost of rented concrete casting moulds, only the moulds themselves, not the labour costs.</p><p>Educational visits have been made to the three projects gathering facts. The conclusions we have drawn are that the difference between the calculated price and the final costs are considerable, especially one project have a greater difference than the others. The reasons for that are among other things tight building ground and a complicated building construction.</p>

This report will try to evaluate the use of rented concrete casting moulds, which are used to build walls and system of joists. The evaluation is only examining the economical aspects. The cost of using concrete casting moulds is a big part of the total production expenses. Therefore it is important that the calculated price not exceeds the final costs of the casting moulds. The calculated price is the price used in the process of making an offer. The evaluation consists of a comparison of the calculated price and the final costs for three building projects. It also evaluates the exploitation of the concrete casting moulds for each project. The report is made by Sven Gynne and Anders Alexandersson at School of Engineering, Jonkoping University, in cooperation with PEAB Jonkoping. The evaluation is strictly based on the calculated price and final cost of rented concrete casting moulds, only the moulds themselves, not the labour costs. Educational visits have been made to the three projects gathering facts. The conclusions we have drawn are that the difference between the calculated price and the final costs are considerable, especially one project have a greater difference than the others. The reasons for that are among other things tight building ground and a complicated building construction.

Syftet med denna studie är att undersöka för vilka byggen det är mer ekonomiskt lönsamt för leverantör av prefabelement att använda sig utav engångsskiva eller formplyfa som formmaterial. I uppdrag av UBAB har en undersökning gjorts om vilket formmaterial som är det lönsammare alternativet vid produktion av trappor. Detta har gjorts genom att analysera processernas tidåtgång, materialkostnad samt totalkostnad. Arbetssätten skiljer sig mellan de olika formmaterialen och därför har arbetsmomentet kartlagts genom tidsstudier för indata och observationer för ytterligare förståelse om processerna. Genom intervjuer har en materialåtgång framkommit som tillsammans med informationen från tidsstudierna använts för att ta fram totalkostnaden. Resultatet visar att totalkostnaden för engångsskivan är större än vid användandet av den traditionella formplyfan. Endast första gjutet visar sig vara lönsammare med engångsskivan. För att engångsskivan ska vara ett kostnadseffektivt alternativ vid flera gjut behövs materialåtgången sänkas då kostnaden för den snabbt blir dubbelt så dyr som med formplyfan. Även om kostnaden för engångsskivan är större finns fortfarande fördelar och möjligheter till förbättring. Att utveckla standardiserade arbetssätt även för engångsskivan kan göra det mer tidseffektivt och genom att få ner materialåtgången kan göra engångsskivan till ett mer lönsamt alternativ. / The purpose of this study is to determent what type of build it’s more economic profitable for the supplier of prefab element to use single-use sheets or form plywood as mold material. Tasked by UBAB a survey was made to see which of the mold materials’ the most profitable alternative in production of stairs. This was made through analyzing the processes time consumption, material cost and total cost. Working procedure is different between the mold materials and that is why the operations been charted through time studies for input and observations for a greater understanding of the processes. A material consumption has emerged through interviews that together with the information from the time studies been used to determent the total cost. The result shows that the total cost for the single-use sheet is greater than when using the traditional form plywood. Only the first cast turns out to be more profitable with the single-use sheet. For the single-use sheet to be a cost efficient alternative at multiple casts the material consumption must be lowered since the cost quickly becomes twice as expensive as form plywood. Even though the cost of single-use sheets is greater there are still benefits and possibilities for improvement. To develop standardized working procedures for the single-use sheet as well could make it more time efficient and by decreasing the material consumption could make the single-use sheet a more profitable alternative.

Detta examensarbete omfattar produktutvecklingen av en komponent till en mätutrustning som ska mäta flytbarheten hos smält metall. Arbetet har utförts hos Bryne AB och har lett fram till koncept-, material- och tillverkningsförslag för komponenten. Arbetet har även utvärderat ett för gjuteribranschen nytt formmaterial som alternativ till dagens gjutsand. Tester har gjorts för att se om återvunnet (material x) går att använda som formmaterial till högtemperaturapplikationer. / This thesis covers the product development of a component for a measuring device that measures the fluidity of molted metal. The work has been performed at Bryne AB and has led to concept, material and manufacturing proposal for the component. This work has also evaluated new molding material to be used in foundries that can be an alternative to today's molding sand. Tests have been made to see if recycled (material x) can be used as mold material for high temperature applications. / <p>Uppladdad version av rapporten är en offentlig kopia av orginalrapporten. I den offentliga versionen har känslig information fått ett annat namn för att inte påverka uppdragsgivarens patentansökan.</p>