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Academic literature on the topic 'Platsgjuten betong'
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Dissertations / Theses on the topic "Platsgjuten betong"
Linddal, Linus. "Betongarbeten under vintertid : Fokusering på platsgjuten betong." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-80267.
Full textDen här rapporten handlar om betongarbeten under vintertid och genomförs för Peabs räkning. Uppdraget var att redovisa de skillnader som finns mellan en sommar- och vintergjutning. En sammanställning visar på de komplikationer som finns, men också vilka hjälpmedel som finnstillgängliga, både elektroniska via dator samt fysiska hjälpmedel. Informationen som tagits fram är ursprungligen från teori i böcker, information från internet samt praktisk erfarenhet från kunnigt folk inom byggproduktion. Annan teori är den som lärts in genom utbildningen till byggnadsingenjör samt muntliga källor under årens lopp. Resultaten jag har kommit fram till hoppas jag skall kunna hjälpa framtida byggprojekt i planeringsfasen vid en vintergjutning. Samtidigt som att hjälpa projekten men också bara dela resultatet som kommit fram genom denna studie, speciellt de extra kostnaderna som uppstår vid en platsgjutning under vintern. Kostnadskalkylen visar på en liten procentuell extrakostnad som uppstår vid en vintergjutning. TorkaS som var ett av de datorprogram som användes utgjorde en stadig del i resultatet där man tydligt kunde se skillnaderna tidsmässigt mellan sommar och vinter, där bland annat en sommargjutning visar på en mycket jämnare uttorkningskurva jämfört med en vintergjutning. Teorin i rapporten väger lite extra tungt då det är den delen mest fokus las på, i den finns ett flertal bra tips på hjälpmedel och utrustningar som underlättar en platsgjutning men samtidigt vid montering av prefabricerade element.
Hellgren, Oscar, and Emil Larsson. "TIDSÅTGÅNG VID STOMMONTAGE - En jämförelse mellan KL-träelement och platsgjuten betong." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-76609.
Full textCLT-elements are used as frame material in an increasing number of multi-dwelling buildings projects in Sweden, as it is still a relatively new method, it is interesting to investigate it more closely. In the choice of frame, construction time is often an important factor and therefore the assembly time is the basis for the comparison in the study. The purpose of this report is to provide more information prior to the choice by comparing a CLT-element frame with a cast concrete frame made with lattice girder system and half shell precast walls with regard to the time required for assembly. A literature survey has been carried out to analyze which factors influence the time spent on raising the two frame options. The planning tool Powerproject has been used to develop a time schedule for each frame. The time schedules have then been compared to see which framework alternative gives the least amount of production time. In order for the frames to be as comparable as possible, common property requirements have been set for bearing capacity, fire resistance, sound insulation and U-value. When the framework meets these requirements, the concrete is dried to 90 % relative humidity and subsequent activities can be started, the work with the frame is considered finished. The simulations of the timetables have been made for the project Norrstjärnan in Örebro, which has been used as a reference object. The times in the report are based on data provided by NCC. Based on the time schedules for the reference object, it is stated that the total time spent on a CLT-element frame is 125 working days and 169 working days for a concrete frame. This is a difference of 44 working days, which gives a percentage difference of about 35 %.
Akram, Hoger, and Kani Kasem. "En jämförande studie mellan platsgjuten betongvägg och skalvägg : Kostnad och tid för respektive byggmetod." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-376.
Full textThe thesis is a comparison between two different construction methods: half shell precast walls and site cast concrete walls. The study has been made for SEFA Betongentreprenad AB who is aiming for the most profitable construction method.The important aspects, which are emphasized in this thesis are costs, time and working environment.The result shows that a building with half shell precast walls is causing increased material cost in the project which also leads to a higher prime cost for the concrete contractor. On the contrary it will require shorter time schedule compared to working with the site concrete wall which the main contractor benefits from, because less time equals decreased overhead cost and management cost. In addition half shell precast walls provides a better working environment compared to site cat concrete walls because less work activities are required at the worksite which also leads to a reduction of accidents.Time and cost is based on unit-time from Nybyggnadslistan 1999 and the price inquiry. To compile the prime cost and time for the total work a careful calculation has been performed in various computer programs so like Bluebem, Wikells and Excel. The survey is based on documentation of a project which includes both a school and student dormitory in Lund.
Eriksson, Andreas, and Nils Larsson. "Prefabricerade betongbroar över järnväg - En jämförelse mellan traditionell platsgjuten konstruktion och prefab på plats." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-53444.
Full textWhen new concrete bridges over railway is to be established there are many aspects that complicates the construction, such as that traffic not can be stopped completely except for short periods during the construction process. The train stop is planned many years in advance, which means that construction must be planned and performed along the planned stops. It is difficult to get to an industrial bridge construction process with higher efficiency and more repetition. The traditional cast on site method is the most common in Sweden although there are methods that could replace it. The main purpose of the report is to find out if precast concrete elements on site is a possible method to facilitate the construction of new concrete bridges over the railway. This report is based on a case study of an existing bridge project to see the benefits and improvements the method with precast on site can provide in various aspects. Also interviews and surveys was conducted to collect opinions about prefabrication and industrial bridge construction. The results in this report show that the method of prefab on site is more advantageous than the traditional cast on site method in several respects. It is a method that makes it possible to reach repetition and serial production of bridges. The interviews revealed that contractors are interested in prefabricated solutions, but among other requirements for the design and conservative view of prefabrication from clients prevents the possibility of applying the method.
Svensson, Josefin, and Rasmus Nilsson. "En jämförelse mellan prefabricerad och platsgjuten stomme: : Ur ett ekonomiskt och miljömässigt perspektiv." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik och belysningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-45182.
Full textPurpose: The purpose of this study is to investigate differences between prefabricated and cast-in-situ structures from an environmental and an economic perspective. This to facilitate for different construction companies to choose a structure solution for future construction projects. Method: To achieve the goal and answer the questions that are included in this study, a case study has been conducted consisting of six projects. The methods for collecting the empirical data required to complete the study are literature study, document analysis, calculation and LCA. The calculation and life cycle analyses in the case study are done using the digital tools Bidcon and Anavitor. Findings: The study shows that the prefabricated structure costs 57–60,7% SEK / m2 BTA and 40,7 – 44,1% SEK / m3 concrete more than the cast-in-situ structure. The study also shows that the prefabricated structure releases 30-35% CO2e / m2 BTA and 17-22% CO2e / m3 concrete more than cast-in-situ structure. Implications: The conclusion in this report is to make it easier to choose the type of structure that is the most economical and has the least impact on the environment. Furthermore, the structures cost and environmental impact can be reduced by choosing a cast-in-situ over a prefabricated structure. Limitations: The study is limited to a case study based on six projects where three are prefab and three are cast-in-situ. The stage of the investigation is limited to the manufacturing and production stages. Only the load-bearing concrete structure consisting of walls, beams and pillars is examined. The foundation is overlooked in this study. Rebars and concrete are limited to general qualities and quantities for the different structures.
Andersson, Victor, Alexander Forsblad, and Robert Israelsson. "Fallstudie av en plattrambro : Skillnader mellan prefabricerat och platsgjutet med aspekt på teknik, arbetsmiljö och ekonomi." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-49237.
Full textMikho, Mikael, and Simon Sandegren. "En jämförelse av platsgjutna ochprefabricerade väggar vid reningsverk- Kostnader och arbetsmiljöfrågor." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-88482.
Full textWhen building concrete walls at water and wastewater treatment plants , the twomethods are cast-in-place and prefabricated walls. The methods give similar resultsbut differ considerably in implementation. We have therefore chosen to study thesubject and draw conclusions about which method is preferable.To study the subject, we chose Skebäcks wastewater treatment plant in Örebro as astudy object where both methods of constructing newpartitions in concrete havebeen used in connection with the reconstruction of existing basins.We have chosen to study costs and work environment issues around the twodifferent construction methods. As a basis for the cost calculation, we have usedWikell's Sektion Data and price information from suppliers. To study the workenvironment, interviews were conducted with two professional concrete workers. Theinterviews then provided the basis for a questionnaire that was given to professionalconcrete workers.Our study shows that prefabricated walls provide a lower construction cost than thecorresponding cast-in-place wall at wastewater treatment plant . The study showsthat concrete workers prefer prefabricated solutions from a work environment pointof view. Physically stressful moments are avoided and the time spent in theworkplace is reduced when building with prefabricated concrete walls.
Tillberg, Erika. "Brandstation i Frihamnen." Thesis, KTH, Arkitektur, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96650.
Full textBorg, Josefin. "Memento Mori." Thesis, KTH, Arkitektur, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168615.
Full textThe presence of death increases the value of life itself. In a society that hides away the end of life a crematory has a purpose to remind and reveal it to whoever wants to interact. The program of this building transforms into nuances at a scale from knowledge to witnessing. This crematory takes a prominent place at the cemetery and in the community. For those who are already in the mourning process, nature has a universal, comforting value. Vegetation intrudes into and reminds us of a time when life starts over. The building is scattered to become a landscape in itself. In the gaps nature grows. From outside the building’s significant parts can be distinguished: Furnace hall, cold store and the five courtyards of the building. Sight lines have been very important in the project. Internal to feel a closeness to nature and external to make passers-by understand the typology’s main processes; The arrival of the coffin, its journey from the cold storage to the oven and finally the ash’s way to a dignified storage for the urn until it has a permanent place.
Lindstam, Otto. "Slakthusområdets Lärocenter." Thesis, KTH, Arkitektur, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-208185.
Full textThe building is a resource centre for a cluster of upper secondary schools in and around the Slaughterhouse area in southern Stockholm. Its program contains relatively contrasting features, from a library and blackbox to group rooms and offices. In order for the building to securely support different user groups while being accessible to the public, it has been organized, vertically and in plan, with gradual transitions between exposed public and private spaces. With the depth of the current plot and the surface area of the application, light becomes an important parameter. Self-stabilizing glass profiles are used around the buildings perimeter, both with insulating, translucent inserts, and as clear glass. The decks around the core constitute a visually stimulating environment with views, alternatively filtered light and exposed waffle slabs. These Holedeck elements enables multi-directional loadbearing along with fitting of installations and good material economy. The smaller rooms and shelterd corners that become increasingly occuring with the buildings height, offer the opportunity for high school students, and other users, to find their favorite places and make the building their own.