Dissertations / Theses on the topic 'Mängdavtagning'
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Siwani, Zahra, and Bahar Tunc. "Mängdavtagning i Vico Office : Jämförelse ur tids- och kostnadsperspektiv mellan Vico Office och manuell mängdavtagning." Thesis, KTH, Byggvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174126.
Full textBIM stands for Building Information Modeling and has led to major changes in the construction industry, but despite this, the technology is not used fully. This is partly because some players feel more comfortable in the manual methods. The technology that is available can be particularly applied in the performance of amount calculation. In the current situation, some calculus engineers choose to perform amount calculation manually based on PDF drawings in print format using the program SpeedyCalc and also with pen and shell stock. This may instead be implemented in calculation program Vico Office with the help of a 3D model. The aim of the thesis is to compare two methods used for the amount calculation in time and cost perspective. The methods that were compared in this study was manual calculation and calculation program Vico Office. The study's purpose was also to compare the errors that may arise in the performance of these two methods. For study purposes, the authors conducted a number of interviews in which important information was collected. The authors also participated in two courses to gain the knowledge needed to facilitate the study. These courses focused on modeling program ArchiCAD and Vico Office. The authors also collected information by studying previous research in the area concerned. The amount calculation in this study was carried out on the project “Promenade”, which the authors reserved by Peab. The project is a multi-family apparment which consists of five buildings with four to six floors. The study was limited to three buildings and the major structural elements including for instance walls, doors and windows. The study demonstrated that the implementation of BIM in the tender stage results in a shorter time and at lower cost in amount calculation. When the different amount calculation methods prepared against each other, the difference in the amount of, for example a fan room wall was 100%, meaning that the fan room wall was missed during manual amount calculation.
Viklund, Fredrik. "Modellbaserad mängdavtagning med hjälp av BIM." Thesis, KTH, Byggnadsteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-35055.
Full textPersäter, Jens, and Amanda Vinka. "Anpassning av BIM-metodik för bättre mängdavtagning." Thesis, Uppsala universitet, Byggteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-228114.
Full textPihlvang, Alexander, and Pierre Svorono. "Automatiserad process för mängdavtagning och kalkylering : En jämförelse mellan traditionell mängdavtagning och kalkylering mot BIM för BTH Bygg AB." Thesis, KTH, Byggteknik och design, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260051.
Full textReplacing an already functioning but old process can be time consuming and unprofitable. This has been demonstrated especially in the construction industry, where digitization is progressing slowly. This study examines what aspects of the traditional process of quantity takeoff as well as calculation process at the company BTH Bygg AB will be affected when changing to a process based on modeling and BIM, Building Information Modeling. The purpose of the study is to compare the traditional quantity takeoff and calculation with the aid of Bluebeam and MAP against a process that is carried out with modeling in the software ArchiCAD with a connection to Vico Office for quantity takeoff and calculation. The difference from the traditional process will be to move from 2D manual quantity takeoff to using 3D models, BIM models, and performing automatic calculations via Vico Office. The study is a qualitative study with elements of a quantitative survey where the focus on getting the most work-efficient and profitable solution for BTH Bygg. Comparisons between two different construction projects has been made. The projects comprises similar size and conditions as well as limited to calculations of floors, interior walls and ceilings. The basis for the study has been personal interviews with people from the calculation section at BTH Bygg to gather knowledge about their process for quantity takeoff and calculation. Interviews with employees of the companies for the software Bluebeam, ArchiCAD and Vico Office have also been carried out to obtain an objective picture of all the software. The conclusion is that implementing information-rich BIM models in the quantity takeoff and calculation has proved to be profitable when it comes to quality through reduced manual work when connecting between software. In addition, there are great opportunities for saving time in other stages by working in an integrated process where all parts of the con- struction process are linked to each other.
Fransson, Emelie. "Mängdavtagning från dynamisk BIM-modell, en fallstudie på NCC Montagebro." Thesis, KTH, Bro- och stålbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99379.
Full textThe Construction Industry has been criticized several times for their slow development and for not being as productive as other industries. In orderto achieve an efficient Architecture, Engineering & Construction (AEC) Industry, Building Information Modeling, BIM, is one of the most debatedtopics in the field. The work process, which is about to efficiently provide information about a project, is already applied in the building construction. On the other hand, bridge and civil construction are just about to start the implementation of BIM. NCC Montagebro is a prefabricated concrete bridge which was developed in the 1980s and is once again up-to-date for product development. Theprevious standard dimensions have been removed in order to meet the customers’ requirements for length and width. A problem that occurs when allowing the customers to choose the dimensions is that there is no corresponding documentation to base the pricing on. The aim of this work was to investigate the possibility of establishing a parametric BIM model to use for quantity take off. A goal was to facilitate the continuing improvement of the product by highlighting obstacles and opportunities. The study was carried out through interviews and a practical case study. The results of these were discussed from the stated research questions andthe previously reported literature review. An important aspect emerging from the study is that the ability to rationalize and standardize the pricing depends on the degree of standardizationof the whole bridge concept. To make a general and flexible model it is necessary to examine which dimensions and parameters that should be set to default and which can be freely adjusted for each new project. These decisions and all other documents of experience should be gathered in a special technical platform for the NCC Montagebro. The study concludes that it is possible to rationalize the pricing of NCC Montagebro by using BIM but the arguments may not be enough to design a BIM model. The model should be provided with additional information so that it can be used in several sub-processes because otherwise, a large part of the purpose of BIM is lost.
Kakar, Adib, and Ensari Turan. "Analys av felkällor vid mängdavtagning av ventilationssystem ur BIM-modeller." Thesis, KTH, Byggteknik och design, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147538.
Full textThe past years there have been vast progresses within the construction industry from traditional construction projection method to a more advanced BIM-projecting method. The results of this dissertation shows that in spite of these vast progresses it is still commonly conducted manual quantity calculations with 2D-drawings. The main reason to this is that when you compare the quantity results from object based 3D models to manual quantity calculation results with 2D-drawing, the results do not add up being equal to each other. Hence time consuming manual quantity calculations with paper drawings has to be conducted to verify the real material quantity. The larger the project, the more time is consumed to conduct manual calculation verification. The aim has been to identify and analyze the different sources of error arising from manual calculation verification. In assistance we used the quantity calculation functions in the software RevitMEP (2014) and MagiCAD (2013.11). To substantiate the results manual calculations were conducted. The results were compared to the manual calculations from 2D drawings, the profit of the method is that we get less reoccurring errors. The gain of this is resulting in fewer recurring of errors. It is important to have a well-structured and clear approach with the use of the various BIM tools. When using the model, there are fewer errors and reduced misunderstandings arise during project planning. Continuous calculation verifications should be implemented as early as possible to allow the discovery of errors. Detecting errors in the early stage will prevent the error from escalating. The study also found a critical programming error in the program MagiCAD for Revit which gives the user false results. The problem has been pointed out to the application developer CADCOM and correction of the program will occur.
Lindgren, David, and Axel Sjölund. "Mängdavtagning från IFC modeller : En jämförelse mellan digital metod och traditionell metod." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-172327.
Full textQuantity takeoff is a process in construction projects that is to a great extent performed using traditional methods. Studies show that the industry is in demand for digital solutions and BIM is a digital solution that the industry believes in [1]. It has been found that the implementation of BIM as a tool for quantity takeoffs takes time, which may be due to several reasons: The 3D models that are delivered today are intended to be a visualization aid and may not be adequate to be used as a quantity takeoff model. When BIM quantity takeoff models are most demanded by constructions companies, it’s not always available. Thought leader – Some project must be the first to apply the method. Software licenses are expensive, and the investment may not yield returns directly. In the interviews with smaller construction companies, the risk of being the first to implement a way of working or technology that is not adopted by the market leaders was described. By using digital tools for quantity takeoffs there is an opportunity to save time and reduce work in several parts of the construction process. Time that can be spent on project planning, procurement of better suppliers or cutting down on unnecessary services. In this way, quantity takeoff by BIM can be a way of contributing to a more sustainable industry- both economically and ecologically. When comparing quantity takeoff from Bidcon BIM and Bluebeam, it was shown that the difference in quantity was for the entire reference project below 1%.
Klang, Rasmus. "KARTLÄGGNING OCH ANALYS AV MÄNGDNINGSARBETET HOS EN BYGGENTREPRENÖR : ANVÄNDNING AV 3D-MODELLER FÖR MÄNGDAVTAGNING." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70087.
Full textDilan, Khazan, and Susanna Elewi. "Kalkylarbete för byggnadsprojekt med Vico Office : För- och nackdelar med 5D BIM." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-19781.
Full textKnutsson, Josef, and Abir Al-Medana. "Krav och hinder med kalkylering i BIM." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Byggnadsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-28534.
Full textPurpose: BIM provides opportunities to perform projects more efficiently, by sharing information between designers, engineers and contractors. This report examines the requirements and the obstacles to perfume effective calculation within BIM. Differences between calculation within BIM and the traditional way are also examined. Method: The study has been answered through interviews with architects, structural engineers and contractors that work with BIM. A study of literature has also been used to get information from previous studies and examples of calculations. Collected empirical data were compared with a theoretical framework created by studies of previous research on the subject. Findings: In the current situation, there are several problems that must be solved in order to be able to do effective e calculation within BIM. The first problem is the uncertainty surrounding the legal responsibility, regarding who is responsible for the BIM model in certain situations. The second problem is that the BIM model does not meet the required quality to be calculable. The third problem is the lack of standardization and a common language of the BIM models within the industry. Implications: The main problem with calculations within in BIM is that, the BIM model does not meet the requirement of quality imposed on the model. This can partially be removed by communication between designers, engineers and contractors at a turnkey, or that the client orders a calculable BIM model from the designer. The legal responsibility must be reviewed in order to make projectors feel safe to deliver BIM models to the contractors, which the contractors need to have reliability on. Limitations: The work has been limited to focusing on new construction.
Kransvik, Fredric, and Henrik Mikkelsen. "Implementering av BIM : Datorstöd i anbudsskedet hos byggföretag." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-21241.
Full textMany construction businesses are stuck in old work patterns and procedures due to lack of time, nervousness and foremost lack of knowledge of new technology. Building Information Modeling (BIM) is a computer-aided instrument for the building sector which creates a digital 3D-model of a construction where all the information in the lifecycle of the construction is stored in the model. This entails additional opportunities compared to traditional 2D-drawings and BIM is due to play a huge part in the construction businesses in the future. The purpose of this study is to examine how an implementation of BIM would be realized at a construction company, and furthermore how BIM affects the different processes within the tender stage of the company. To gather appropriate knowledge surrounding the subject a literature study has been ongoing during the entirety of the study. For the purpose of data gathering, qualitative semi-structured interviews has been performed on the construction company Wästbygg and the retail company Cadcraft. Observations has also been performed on Wästbygg to get acquaintance with their current work procedures. To implement a new work procedure with BIM would prove to require engagement and patience from the company. National standards do not currently exist, and this makes the progression more challenging. It is therefore vital for the company to decide a well-defined strategy and goals, and furthermore hand out responsibility to one or two employees on the BIM-implementation. To commence the implementation in the tender stage is a wise decision, the tender stage acts early in the construction process and if a realization of BIM is successful here, the opportunities for further expansion with BIM in the company is more probable. Successful practise with BIM would contribute to a semi-automated quantity take-off and calculation, a simplified information exchange in the tender stage, and a comfortable and appealing visualization for both staff and customer. This contributes to a straightforward and more precise tender stage which will strengthen the company’s competitiveness.
Yusuf, Adan, and Ahmad Miakhil. "Jämförelse av olika mängdavtagningsmetoder." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-77014.
Full textBIM stands for Building Information Modeling. This means that you have a common buildingmodel that contains information relevant to all members of the building process . Thedifference between a 3D and BIM model is in addition to visualization that you have access tomore dimensions such as time and cost. This leads to greater clarity for all members during abuilding's life cycle. IFC for mat is a neutral file format that facilitates information exchangebetween different BIM tools. IFC format has been developed by the construction industry andis not owned by any supplier. VDC, which stands for Virtual Design Construction, is NCC's way ofworking on projectslinked to BIM. VDC provides the opportunity to provide the user with updated information tounderstand the customer's wishes and how to impleme nt it. A part of this work includesinvestigating new methods of quantity takeoff and comparing them. The purpose of the thesis work was to compare 4 different methods ofquantity takeoff basedon time and quality. The 4 different methods were Vico Office, Solibri, Bluebeam and thetraditional quantity takeoff by hand (manual) manual). The quantity take off was limited only to theamount of non bearing inner walls in the project. Vico Office, Solibri, Bluebeam andquantity takeoff by hand are the 4 methods reviewed. Thebasis for the quantity take off has been an IFC file and 2D drawings. From the IFC file, takeoffwas made in Vico Office and Solibri. The 2D drawings were used to obtain quantities fromBluebeam and by hand. The quantity take off results in a comparison of the quantities that wasreceived . Summary of quantities has been carried out in Excel. Thequantities has been collected from Kvarteret Pedagogen which is a new construction ofmulti family houses in Karslundsskogen . It consists of 3 houses with 55 apartments on 5floors. Building start was 2015 an d today the project is complete. The result showed significant differences between the four meth ods. The results showed thatSolibri Model Checker is the software that is best suited for quantity takeoff when consideringtime and quantity. It was also the most user friendly of the 4 methods.
Slionskis, Petras. "Detaljerad 3D : Mängder och detaljer från modellen." Thesis, Uppsala universitet, Byggteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383638.
Full textDigitalization in the construction industry is taking huge stepstowards becoming less dependent on paper drawings and insteadincreasing usage of 3D/BIM models throughout the whole constructionprocess. This thesis attempts to gain a better understanding forAutodesk Revit parameters length and cut length of steel beams, toincrease accuracy and level of automatization for quantity takeoffs.The second part of thesis contains implementation of steelconnections in 3D models since the creation usually takes place in 2Dprograms. Method contains information search in books, other theses, websitesand two computer studies. The first one for length measurementpurpose to understand difference between length parameters of singlebeams and interactions between various construction elements. Thesecond part contains test of steel connections tool in Revit 2018 onthe simple steel construction and toolbar steel in Revit 2019 forconstructing a couple parts from 2D drawings. The results make it clear that parameter length usually has nothingin common with the actual length of the beam and cut length is theparameter one should be consider. Solutions for steel connections in3D models might be found in Revit 2019, although some improvementsare necessary. Revit 2018 might be useful in some minor cases, butnothing too complicated.
Sohlberg, Gabriella, and Henny Lorentzon. "Why is BIM not being used in a larger extent in the construction industry? : A study on BIM used for quantity take-off at medium-sized construction companies." Thesis, KTH, Byggteknik och design, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302530.
Full textByggbranschen är jämfört med andra branscher långsam på att utnyttja de fördelar som finns med digitalisering. Det är många olika aktörer inblandade i projekt vilket gör det till en mångsidig men även fragmenterad bransch, vilket i det här fallet inte är till dess fördel. Building information modeling (BIM) är ett verktyg som skulle kunna förbättra samarbetet mellan dessa aktörer och som har många andra fördelar kopplat till sig såsom tids- och kostnadsbesparing. Mängdavtagning i BIM är något som kan genomföras vid en låg mognadsgrad och anses vara en av de mest användbara arbetsmetoderna som BIM möjliggör. Trots de många fördelar som studier påvisat har många företag inom byggbranschen fortfarande inte fullt ut implementerat ett arbetssätt där BIM används vid mängdavtagning.Syftet med examensarbetet är att undersöka BIM-användningen hos aktörer i den svenska byggbranschen. Mer specifikt kommer detta examensarbete att granska medelstora entreprenörers arbetssätt med mängdavtagning. Eftersom mängdavtagning har visats vara kopplat till mer grundläggande BIM-användning kan denna faktor ses som en god indikator för utvecklingen av BIM inom företag. Medelstora entreprenadföretag har valts då dessa är en god representant för den stora massan av aktörer inom byggbranschen som både har kapaciteten och ekonomin att implementera BIM. Vidare syftar detta examensarbete också till att lokalisera svårigheterna vid användning av dessa digitala arbetssätt för mängdavtagning.Studien är utförd som en kvalitativ fallstudie där ByggDialog AB fått exemplifiera ett medelstort entreprenadföretag i byggbranschen. Medarbetare har i semistrukturerade intervjuer fått svara på frågor som berör studiens ämne.Resultatet i studien har visat att viljan att utveckla arbetssätt med BIM hos medelstora entreprenadföretag finns men att visioner och ambitioner begränsas av de omställningskostnader som en BIM-implementering skulle medföra. Att det inte finns någon efterfrågan eller krav från beställare är en annan faktor som spelar in i varför BIM inte används mer idag. Som en följd av att beställarna idag inte är beredda att finansiera en BIM-implementering så drivs inte utvecklingen vidare inom det studerade företaget.Vi har i denna fallstudie identifierat att det studerade medelstora entreprenadföretaget ej använder sig av BIM vid mängdavtagning. Detta beror inte på en ovilja hos entreprenörerna, utan för att det är svårt att argumentera för att en BIM-implementering skulle täcka de kostnader som det innebär. Denna studie indikerar därför att det på kort sikt inte lönar sig att implementera BIM då det innebär stora omställningskostnader för företagen.
El-Zouki, Robert. "Producera mängdgrafer genom BIM : Produce quantity take-off graphs using BIM." Thesis, KTH, Byggnadsteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209563.
Full textDeviations in a construction project lead to delays. They can also lead to prematurely completed activities. In any case, this will be a problem since the contract period for subcontractors is determined. What this means is that if a subcontractor completes its task prematurely, there will be a time buffer in the timetable between completed and next activity. This is considered a cost because no work is being done. If a subcontractor completes an activity late, this is also problematic as it displaces activities on the critical line. If the activities are on the critical line. It should be clarified that more types of deviations exist. Including delivery, delayed transport, unforeseen obstructions during production, etc. One method of avoiding deviations is to continuously monitor production activities using quantity take-off graphs. These graphs are charts showing built-up amount per unit of time and cumulative built-up amount. They give a visual picture of the state of production, and from there, decisions can be made about changes in production so that the project will follow the time schedule again. Quantity take-off charts come in three forms. Planned, actual & forecast quantity take-off graphs. The purpose of this degree project is to investigate how BIM tools during design phase can support a project under production phase by predicting deviations. If deviations are early discovered, resources can be adjusted or working hours changed to complete the project according to time schedule. The study shows that the quantity graphs can be developed relatively easily, but well thought out planning and structure are required. It is recommended to coordinate a good working method for the entire work from start to finish by having a coordinator who controls the model but also other officials who know the program well enough to support and relieve the coordinator if necessary. The study also shows that it is important that model developers deliver the model with a good and structured designation of object. This is easier to connect KPI-numbers to the correct quantity takeoff graph. CoClass classification system (project name BSAB 2.0) should be used as the basis for naming of objects.
Gustavsson, Sam, and Filip Johansson. "Kvalitetssäkring av objektsbaserade IFC-filer för mängdavtagningar och kostnadskalkyler : En fallstudie av levererade konstruktionsmodeller, vid Tyréns AB Stockholm." Thesis, KTH, Byggteknik och design, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-127029.
Full textTo perform quantity takeoffs and cost estimates based on 3D models is problematic, if the models do not meet the expected demands of information. The weaknesses of the models leads to uncertainty when the calculator will establish cost estimates, which forms the background to the issues that the thesis constitutes. The project Biomedicum is conducted as a full-fledged BIM project, where the object based 3D models are the basis for cost estimates in the system phase. The calculator in the project has expressed dissatisfaction regarding the quality of the models, and believes that there are major flaws that lead to the risk of uncertain calculations increasing. Of this reason, this thesis will analyze the possibilities about ensuring the quality of an object based 3D model in IFC format, by using the software Solibri Model Checker. This thesis consists of a literature review, interviews and a case study. The case study examines whether Solibri Model Checker is capable of checking the models based on the project specific requirements, and to analyze the results of the checks that have carried out in the case study. The interviews have been the basis for the number of problems that have been considered relevant for the thesis. Problems that can be traced to legal difficulties, lack of a common set requirements, disagreements about the content of an object based 3D model etc. The case study has shown that the 3D models are inadequate to perform cost estimates, which leads to difficulties and uncertainties in the calculation process. There are several reasons for this. The designers of the project have used wrong modeling technique for quantity takeoff and cost estimating. But also that there are no clear guidelines as to what information should be included in the items in the document stage system, which has emerged during the interviews. It has also emerged during the interviews that crucial problems that may be linked to the models are of poor quality, because it has not been required early enough in the process. What is important to get a working process in which the object-based 3D models to be used for quantity takeoffs and cost estimates, is that in the early stages determine what information is needed in the objects to credible estimates will be possible to establish. The importance of a clear IT manual is also great, as it is the manual who serves as the basis of the information to be included in the models.