نشریه مهندسی و مدیریت ساخت
سال دوم شماره 3 (پیاپی 7، پاییز 1396)

Undoubtedly, among existing capital, human resources have a high status in advancing the goals of each organization. It should be noted that the progress of each nation is dependent on the work and effort of all sectors of society, and productivity is a criterion for assessing the performance of these activities and efforts in various social and economic sectors. The purpose of this research is to identify factors affecting productivity and determine the relationships between these factors and how they affect them. This research is a descriptive-analytic research method and the statistical population consists of people involved in construction in Golestan province with a sample size of 155 people. A questionnaire was used to collect data.In this study, Hierarchical Hierarchy Process Analysis (AHP) method was used for weighting the criteria and the method of ElECTERE was used for prioritization of the options. The results showed that individual factors had the most impact on the productivity of construction industry employees in Golestan province.

The construction lifecycle is a complex endeavor which incorporates multiple parties to undertake numerous tasks each with varying levels of interrelated resources. Hence, the increase of claims in today's complex projects has caused the finding of right tools to be one of the important questions in new research to manage and mitigate claims.A relative new technology that is progressively getting accepted in the construction industry is BIM, which has been playing a major role on improving different areas of construction management in which claims are a part of it. In this paper, the research method is descriptive review. To collect the desired data, some questionnaires and library studies are used. The focus of this study is on the set of BIM capabilities which has the effect of reducing the causes of claim. Finally the results showed that with the increasing complexity of projects, the effect of BIM in reducing claims becomes more dynamic. Eventually this technology has caused many of the factors affecting the incidence of claims in the construction phase to be removed at the design stage.

BOT and EPC contracts are of great importance to law and economics professionals. Different countries, especially developing countries, regard these contracts as an effective tool for attracting foreign capital and using private sector management in infrastructure projects. For the success of the state, it must provide a suitable economic, political, and, in particular, legal environment for a private investor. The only legal text in the Iranian legal system that deals with this agreement is the Foreign Investment Promotion and Enforcement Act, which, of course, covers many aspects of BIS. T is silent. Some of Iran's internal regulations regarding this agreement are contrary to the WTO rules and need to be amended. Therefore, this article reviews the legal status of the two contracts. The results show that due to the variety of projects that can be implemented in this way and the specific features of each one, it is necessary for different institutions and ministries to Compliance with this law is to prepare its executive code according to the characteristics of projects in their respective sections.

large parts of the existing buildings in the country, particularly in the small and medium sized cities building materials (i. e. the building that with bricks, stones and cement blocks or are they all or part of Verticalloads by the walls of the building materials to bear) So examining the vulnerability of this type of the structure of the earthquake is particularly important Also, most structures that are historical importance, with the use of building materials . brick structures , usually in the quake has major weaknesses . understanding the weaknesses a prelude to choose a suitable for strengthening them. but the most vulnerable brick structures of the structure in the earthquake . The reason for the failure of the buildings and rupture largely due to inadequate form and inadequate performance structure to stress and bend arising from the earthquake and particularly administrative weaknesses , residents of the buildings in the quake zones at serious risk is placed. In this paper methodology seismic vulnerability brick structures and executive procedures remove all kinds of weaknesses of them would be reviewed.

One of the most important project management areas is project risks management. This area of project management knowledge, give manager the power to improve project performance. Costs overrun, delays and quality defects, in construction project, is the result of the poor project performance. By use project risk management knowledge, important steps can be taken to improve this crucial matter.The goal of this research is survey construction and commissioning of hospital risks. For this purpose, processional attribute of project management body of knowledge is used to evaluate and survey the risks of design to construction and commissioning of hospital. According to the results the top three risks are: incoordination between project participants, delay in bill payment by the government (owner), and main change in executive plans and technical specification. Quantitative evaluation show that, this project take 10 years and the highest risks is belong to the construction of main building and campus. According to the results the top three risks are: incoordination between project participants, delay in bill payment by the government (owner), and main change in executive plans and technical specification. project implementation was simulated by 5000 iterates, result show that, this project take minimum 5 years and maximum 10 years, and by 80percent probability it will finish at 8 years. In term of cost, due to the lack of reliable information the results aren't very reliable, however, with a maximum budget of 140 billion, minimum budget of 70 billion, and average budget of 88 billion, it will be completed.

Today's traditional views alone can not meet the needs of managing civil engineering projects. Therefore, the use of modern managerial approaches can be largely controversial. The first step towards achieving this goal is to understand the types of projects in terms of line or network, the difference between managing a project with multi-project management and project management and implementation methods. In this research, the critical chain management approach has been used instead of the critical path method to provide a more practical timetable. In order to overcome uncertainty, the proposed method of fuzzy numbers in terms of the definite time of activity and knowledge of experts is used to model uncertainty over the duration of the activity. The proposed method, instead of replacing the initial deterministic scheduler with the fuzzy set time schedule, still holds the definite time schedule and simply arranges the project buffer to deal with uncertainty. The size of the project buffer is determined using calculations on fuzzy numbers. Also in order to overcome the risk in the case study, this study considers an average risk factor to meet the needs of the project buffer. However, changing the risk factor in different high, medium and low risk situations will have little effect on buffer size. In this study, in order to evaluate the model presented in this study, several linear-repeater construction projects were simultaneously studied and planned.