scholarly journals PENGGUNAAN AHP UNTUK PEMILIHAN METODE PERENCANAAN ANTARA KONVENSIONAL DENGAN BIM PADA REDESIGN PROYEK KONSTRUKSI

2019 ◽  
Vol 1 (3) ◽  
pp. 263-273
Author(s):  
Iwan Supriyadi ◽  
Aland Hasbi
Keyword(s):  
Decision Making ◽  
Construction Projects ◽  
Planning Method ◽  
Field Analysis ◽  
Advantages And Disadvantages ◽  
Method Selection ◽  
Global Weight ◽  
Training Cost ◽  
Selection For ◽  
The Cost

Abstract  During the construction projects, delays usually happen which are mainly caused by reworks, where 60% of reworks are caused by design failure. Since designs have a major impact on construction projects, there are methods to correctly create a design. Three methods of planning that can be done are conventional, semi-conventional, and BIM methods. The three methods have both advantages and disadvantages. Decision making for method selection for redesigning is very crucial to avoid delays to a project. The three main criteria in method selection are cost, time, and system. This research was done to decide the main criteria, sub-criteria, and an alternative in decision making of method selection for redesigning through the use of AHP (Analytical Hierarchy Process) and analyze conditions on the field with the result of AHP analysis. The result showed that cost was the main criterion with a weight if 0.40 and the sub-criterion for the cost was the HR  training cost with a global weight of 0.21. Alternative planning method selected was the BIM method with a global weight of 0.66. The result of field analysis showed that BIM planning method was 60.4% faster than the conventional method with an increase of training cost by 62.5%. The conclusion of this research was that BIM planning method was more efficient than conventional and semi-conventional planning in the process of re-design.Key words: Re-design, Conventional, BIM, AHPAbstrak Pada pelaksanaan proyek konstruksi, keterlambatan dengan rework menjadi penyebab utama dimana 60% penyebab Rework disebabkan oleh kesalahan desain. Besarnya dampak desain pada proyek konstruksi maka berbagai cara dilakukan untuk menyelesaikan proses desain dengan tepat. Tiga metode perencanaan yang dapat dilakukan yaitu Metode Konvensional, Metode Semi Konvensional, dan Metode BIM. Ketiga metode perencanaan tersebut sama-sama memiliki kelebihan dan kekurangan. Pengambilan keputusan saat pemilihan metode perencanaan pada pekerjaan re-design sangat krusial dalam mengurangi keterlambatan proyek. Banyaknya variabel dan kurangnya kriteria obyektif menyulitkan proses pemilihan metode perencanaan re-design. Tiga kriteria utama dalam proses pengambilan keputusan dalam pemilihan metode perencanaan re-design yaitu biaya, waktu, sistem. Penelitian ini dilakukan untuk menentukan kriteria utama, subkriteria dan alternatif dalam penentuan pengambilan keputusan dalam pemilihan metode perencanaan re-design dengan menggunakan metode AHP (Analytical Hirerachy Process) dan menganalisa kondisi di lapangan dengan hasil analisis AHP. Hasil penelitian menunjukkan biaya menjadi kriteria utama dengan bobot sebesar 0.40 dan subkriteria yang terpilih adalah biaya pelatihan SDM dengan bobot global sebesar 0.21. Alternatif metode perencanaan yang dipilih adalah metode perencanaan BIM dengan bobot global sebesar 0.66. Hasil analisis lapangan juga menunjukan bahwa metode perencanaan BIM lebih cepat 60.4% dari metode perencanaan konvensional dengan peningkatan biaya pelatihan sebesar 62.5%. Simpulan dari penelitian ini adalah Metode Perencanaan BIM lebih efisien daripada Perencanaan Konvensional maupun semi-konvensional dalam pengerjaan re-design.Kata kunsi : Re-design, Konvensional, BIM, AHP

A novel model for risk management of outsourced construction projects using decision-making methods: a case study

2020 ◽  
Vol 10 (2) ◽  
pp. 97-123 ◽  
Author(s):  
Amin Mahmoudi ◽  
Mehdi Abbasi ◽  
Xiaopeng Deng ◽  
Muhammad Ikram ◽  
Salman Yeganeh
Keyword(s):  
Decision Making ◽  
Construction Projects ◽  
Project Managers ◽  
Analytic Hierarchy ◽  
Suitable Alternative ◽  
Content Type ◽  
Proposed Model ◽  
The Cost ◽  
First Time

PurposeSelecting a suitable contract to outsource construction projects is an ongoing concern for project managers and organizational directors. This study aims to propose a comprehensive model to manage the risks of outsourced construction project contracts.Design/methodology/approachTo employ the proposed model, firstly, the types of contracts and risks in the organization should be identified, then, to prioritize the contracts, the identified risks are considered as criteria. After receiving the experts' opinions, the best–worst method (BWM) integrated with grey relation analysis (GRA) method was used to prioritize the contracts. BWM and GRA are multi-criteria decision-making methods with different approaches and applications. In the current study, BWM has been employed to calculate the weights of criteria because it has better performance than other methods such as the analytic hierarchy process (AHP). After calculating the weights of criteria, the GRA method has been utilized for ranking the alternatives.FindingsAccording to the results obtained from the case study, the cost plus award fee contract is the most suitable alternative for outsourcing construction projects. The proposed methodology can be practically applied through different types of the projects such as construction or “engineering, procurement and construction”.Originality/valueTo the best of our knowledge, this is the first time a conceptual model has been proposed to select an appropriate contract for construction projects. Also, for the first time, the BWM integrated with GRA method has been used to prioritize project contracts based on the potential risks. The proposed model can contribute to project managers for selecting a suitable contract with the least risk in construction projects.

A META ANALYSIS OF DECISION MAKING PROBLEMS IN CONSTRUCTION RISK MANAGEMENT

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Kerim Koc ◽  
Asli Pelin Gurgun
Keyword(s):  
Decision Making ◽  
Risk Management ◽  
Construction Projects ◽  
Meta Analysis ◽  
Multiple Criteria Decision Making ◽  
Extensive Literature ◽  
Factors Affecting ◽  
Advantages And Disadvantages ◽  
Construction Risk ◽  
Pros And Cons

Various Multiple Criteria Decision Making (MCDM) methods are being commonly used in the area of construction risk management to deal with decisions that are subjected to several factors affecting the selection of the best possible choice in the projects. There are many techniques developed to provide assistance to decision-makers during decision-making process, each having different advantages and disadvantages. This study discusses some of the most frequently applied MCDM methods in construction risk management such as: AHP, ANP, TOPSIS, VIKOR, and DEMATEL, with their own application principles. It aims to introduce a meta-analysis about the use of MCDM methods within the last two decades and provide an extensive literature review study about construction risk management. It is expected to assist practitioners and researchers to suggest effective methods for specific type of risks to be addressed in construction projects. The discussion of pros and cons of each method will also provide some insights to get use of multiple MCDM methods rather than a single means to enhance the analysis outputs.

scholarly journals Substantiation of projected costs of investment and construction projects

Vestnik MGSU ◽  
2020 ◽  
pp. 1693-1707
Author(s):  
Pavel A. Zhuravlev ◽  
Artur M. Marukyan
Keyword(s):  
Decision Making ◽  
Marginal Cost ◽  
Construction Projects ◽  
Investment Decision ◽  
Life Cycles ◽  
Similar Construction ◽  
Investment Value ◽  
Investment Decision Making ◽  
Project Documentation ◽  
The Cost

Introduction. Investment value assessment, investment decision making, and successful implementation of investment and construction projects at all stages of their life cycles depend on high-quality feasibility studies focused on budget investments. The purpose of the work is to substantiate budget investments (calculation of the estimated (marginal) cost) by means of modeling and ensuring the compliance between the cost of similar types of work at other construction facilities and requested capacity values or types of work specified in design assignments or preliminary project documentation packages. Materials and methods. The co-authors analyzed the technical requirements and conditions affecting pre-project solutions (engineering studies), as well as the feasibility and expediency of the project implementation. The calculation of projected (marginal) project costs performed to substantiate budget investments in accordance with established administrative/territorial, organizational, technical and technological pre-design solutions and alternative engineering options, is implemented by means of modeling the costs to be incurred and assignments fulfilled at a similar construction facility. Results. Budget investments are substantiated by the analysis of the estimated (marginal) cost, performed on the basis of cost parameters and types of works performed at a similar construction facility and with regard for the features and requirements set in the design assignment and pre-project documentation. Conclusions. The significance of the research project consists in the practical application of the process of modeling the cost of similar construction facilities in the course of compiling a package of documents to substantiate the investments to be made, assess the investment value and make a contribution to investment decision making.

Main approaches to estimating the cost of shareholder equity of oil and gas producers

2020 ◽  
Vol 26 (3) ◽  
pp. 685-697
Author(s):  
O.V. Shimko
Keyword(s):  
Oil And Gas ◽  
Oil Prices ◽  
Minimum Cost ◽  
Free Cash Flow ◽  
Annual Reports ◽  
Comparative Approach ◽  
Economic Activities ◽  
Advantages And Disadvantages ◽  
Oil And Gas Producers ◽  
The Cost

Subject. The study analyzes generally accepted approaches to assessing the value of companies on the basis of financial statement data of ExxonMobil, Chevron, ConocoPhillips, Occidental Petroleum, Devon Energy, Anadarko Petroleum, EOG Resources, Apache, Marathon Oil, Imperial Oil, Suncor Energy, Husky Energy, Canadian Natural Resources, Royal Dutch Shell, Gazprom, Rosneft, LUKOIL, and others, for 1999—2018. Objectives. The aim is to determine the specifics of using the methods of cost, DFC, and comparative approaches to assessing the value of share capital of oil and gas companies. Methods. The study employs methods of statistical analysis and generalization of materials of scientific articles and official annual reports on the results of financial and economic activities of the largest public oil and gas corporations. Results. Based on the results of a comprehensive analysis, I identified advantages and disadvantages of standard approaches to assessing the value of oil and gas producers. Conclusions. The paper describes pros and cons of the said approaches. For instance, the cost approach is acceptable for assessing the minimum cost of small companies in the industry. The DFC-based approach complicates the reliability of medium-term forecasts for oil prices due to fluctuations in oil prices inherent in the industry, on which the net profit and free cash flow of companies depend to a large extent. The comparative approach enables to quickly determine the range of possible value of the corporation based on transactions data and current market situation.

Statistical Evaluation for claims and disputes in construction contracts

2017 ◽  
Vol 5 (2) ◽  
pp. 80-96
Author(s):  
Raid Saleem Abd Ali ◽  
Nooran kanaan Yassin
Keyword(s):  
Construction Projects ◽  
Statistical Evaluation ◽  
Relative Importance ◽  
Minimum Level ◽  
Construction Contracts ◽  
Long Period ◽  
Price Schedule ◽  
Questionnaire Form ◽  
The Subject ◽  
The Cost

This research aims to diagnose and identify the causes of claims and disputes between the contractor and the employer, also review the methods used to resolve disputes in construction contracts. In order to achieve the goal of the research, scientific methodology is followed to collect information and data on the subject of claims and disputes in construction projects in Iraq through personal interviews and questionnaire form. The most important results in this research are: the price schedule contract as a kind of competitive contracts is the most important and guarantee for the completion of minimum level of claims and disputes with relative importance of (84.1), compared with the (cost plus a percentage of the cost contract) as a kind of negotiating contracts is the most relative importance of (79.6), and the turnkey contract as a kind of special contracts is the most relative importance of (74.2). The  contractor and  his agents are one of the most influence sources in occurring claims and disputes in construction contracts with relative importance of (77.4) followed by the contract documents with relative importance of (74.2) and then the employer with relative importance of (73.2). In addition to the long period of litigation and the multiplicity of veto grades are most negative when contractual disputes have resolved by it, and with relative importance of (86), followed by the large number of issues and lack of efficiency and specialty of Judges with relative importance (78.4). Finally, the direct negotiation method (relative importance of 77) is one of the most friendly settlement ways favored by conflicted parties, while the resolution of disputes and claims board (relative importance of 10) occupied the last rank in the friendly settlement ways.

Classification of the factors forming the cost of the web-site

2017 ◽  
Vol 31 (2) ◽  
pp. 82-89
Author(s):  
E. S. Epifanov
Keyword(s):  
Web Site ◽  
Internet Site ◽  
Advantages And Disadvantages ◽  
Major Factors ◽  
The Cost ◽  
The Web

This article presents a classification of major factors that shape the cost of Internet site. Also discusses the limitations in determining the objectives of the web site; advantages and disadvantages of different factors.

Emotional Choices

2018 ◽  
Author(s):  
Robin Markwica
Keyword(s):  
Decision Making ◽  
Choice Behavior ◽  
Choice Theory ◽  
Cuban Missile Crisis ◽  
Coercive Diplomacy ◽  
The Core ◽  
Present Book ◽  
Action Model ◽  
The Cost ◽  
Dynamic Interplay

In coercive diplomacy, states threaten military action to persuade opponents to change their behavior. The goal is to achieve a target’s compliance without incurring the cost in blood and treasure of military intervention. Coercers typically employ this strategy toward weaker actors, but targets often refuse to submit and the parties enter into war. To explain these puzzling failures of coercive diplomacy, existing accounts generally refer to coercers’ perceived lack of resolve or targets’ social norms and identities. What these approaches either neglect or do not examine systematically is the role that emotions play in these encounters. The present book contends that target leaders’ affective experience can shape their decision-making in significant ways. Drawing on research in psychology and sociology, the study introduces an additional, emotion-based action model besides the traditional logics of consequences and appropriateness. This logic of affect, or emotional choice theory, posits that target leaders’ choice behavior is influenced by the dynamic interplay between their norms, identities, and five key emotions, namely fear, anger, hope, pride, and humiliation. The core of the action model consists of a series of propositions that specify the emotional conditions under which target leaders are likely to accept or reject a coercer’s demands. The book applies the logic of affect to Nikita Khrushchev’s decision-making during the Cuban missile crisis in 1962 and Saddam Hussein’s choice behavior in the Gulf conflict in 1990–91, offering a novel explanation for why coercive diplomacy succeeded in one case but not in the other.

On Laplacian energy of picture fuzzy graphs in site selection problem

2021 ◽  
pp. 1-18
Author(s):  
Mahima Poonia ◽  
Rakesh Kumar Bajaj
Keyword(s):  
Decision Making ◽  
Site Selection ◽  
Upper Bounds ◽  
Selection Problem ◽  
Hydropower Plant ◽  
Fuzzy Graph ◽  
Fuzzy Information ◽  
Fuzzy Graphs ◽  
Laplacian Energy ◽  
Selection For

In the present work, the adjacency matrix, the energy and the Laplacian energy for a picture fuzzy graph/directed graph have been introduced along with their lower and the upper bounds. Further, in the selection problem of decision making, a methodology for the ranking of the available alternatives has been presented by utilizing the picture fuzzy graph and its energy/Laplacian energy. For the shake of demonstrating the implementation of the introduced methodology, the task of site selection for the hydropower plant has been carried out as an application. The originality of the introduced approach, comparative remarks, advantageous features and limitations have also been studied in contrast with intuitionistic fuzzy and Pythagorean fuzzy information.

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