Research Note
مدیریت ساخت و مدیریت پروژه
Ali Ghorbani; Zeinab NoorMoradi
Abstract
Examining the technical, social, environmental, geographic, and economic features is necessary in the process of water and sewage projects on a large scale. The purpose of this research is to identify and rank water and sewage risks in Ilam province. In this research, using in-depth library studies to ...
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Examining the technical, social, environmental, geographic, and economic features is necessary in the process of water and sewage projects on a large scale. The purpose of this research is to identify and rank water and sewage risks in Ilam province. In this research, using in-depth library studies to identify risk in the life cycle and using CVR content validity to remove irrelevant factors. Then, by designing a questionnaire and a statistical community of 40 water and sewage experts, which was determined using Cochran's formula, the effect of the importance of risk factors in the life cycle of the project was investigated. . In this research, the internal reliability of the structure is 0.76, which has established a good internal consistency, then using the Friedman test, the risks have been ranked, and in this research, the risks of lack of plans and executive details, lack of proper design, and the need The changes in the implementation phase compared to the plan have the most important risk and changes. Then, in order to prioritize the life cycle stages of the project, using the AHP technique and a community of experts (5 to 7 people), the life cycle stages have been examined with safety-cost-time alternatives, and the results show that design and planning have the highest priority and They have attributed the least importance to the establishment in this research.
Review Article
مدیریت ساخت و مدیریت پروژه
Hossein SamadYar
Abstract
Conventional concretes, which are designed, mixed, transported and processed by traditional methods, cannot be used to achieve the desired specifications for special applications or to achieve specific requirements. Strength alone cannot answer all the properties related to concrete, especially its durability, ...
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Conventional concretes, which are designed, mixed, transported and processed by traditional methods, cannot be used to achieve the desired specifications for special applications or to achieve specific requirements. Strength alone cannot answer all the properties related to concrete, especially its durability, and it is necessary to consider its reliability and durability in addition to the issue of resistance and bearing loads during the service life of concrete for different areas. In recent years, on the reinforcement used in reinforced concrete structures, developments in concrete have been placed at the top of the research programs of some countries of the world. The opinion of most experts and practitioners of concrete works has been drawn to this issue that strength alone cannot answer all the properties of concrete, especially its durability, and it is necessary to design concrete for different areas in addition to the issue of resistance and bearing loads during the service life. Its reliability and durability should also be considered. In recent years, there has been a huge change in concrete technology and the emergence of new concretes.
Research Article
مدیریت ساخت و مدیریت پروژه
Isa Taqizadeh
Abstract
Construction companies today are facing a new environment. Iranian construction and construction companies suffer from low productivity and many managers have struggled to find appropriate solutions to this problem. It seems that using project management information systems to improve managers' management ...
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Construction companies today are facing a new environment. Iranian construction and construction companies suffer from low productivity and many managers have struggled to find appropriate solutions to this problem. It seems that using project management information systems to improve managers' management and increase their productivity could be one of these solutions. But because of the special features that govern these construction and development companies, especially the problems of the human resources (including managers and employees), it is not possible to apply this tool in practice and to observe it in practice. It has become less of a company that has been able to use these project management information systems efficiently. Therefore, if research can identify the key components in implementing a project management information system in bulk construction projects and provide solutions for the effective use of these project management information systems, it will certainly be a useful step in solving corporate problems Construction removed. The present study aims to investigate the impact of implementing project management information systems on the success of project development projects, which include improving the quality, cost and time components of the project depending on the content dimensions of the quality of the project management information systems, which also include the accuracy components. Examines and explores the relevance and completeness of the information in Kara Sazeh Matin's bulk projects.
Research Article
Rahman Sharifi; Mohammad Madah
Abstract
Every year one of slope instability that damages the lives of many people would enter the landslide. Therefore, understanding the factors affecting the landslide is one of the most essential measures to prevent landslide damage is reduced. Stability analysis of soil slopes in order to determine the most ...
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Every year one of slope instability that damages the lives of many people would enter the landslide. Therefore, understanding the factors affecting the landslide is one of the most essential measures to prevent landslide damage is reduced. Stability analysis of soil slopes in order to determine the most probable failure surface, ie the lowest confidence level, Geotechnical Engineering is one of the important issues. One key factor which may stability of soil slopes, especially roadside slopes to endanger, there is a landslide or the landslide. soil Geostudio (SLOPE / W) has any impact on the safety factor (F.S) to Shirvani, will be studied. AUTO CAD to design the transverse profiles and the list of calculated volumes and density test have been conducted at the site. Also, using cross sections, the most critical point mode selected and the scope (to drift) software SLOPE / W. And in this regard, with trial and error soil shear strength parameters software has been determined.The results showed that the effect of the natural slope, road construction on slopes with a gradient steeper than 24 degrees reduces slope stability and reliability result in the stability range of solutions slope protection such as the implementation staircase gable (width of stairs 3 meters and the step height of 4 meters 1.25: 1). in this regard, the slope safety factor increased about 28 percent. The results showed trenching operation to a height of 4 meters with a slope of 1:1 stable and 9 meters on the slope of the trench 1:1 becomes unstable. It can be concluded that the operations slope excavation and road margins has a direct effect on the stability of slopes.
