نشریه مهندسی و مدیریت ساخت
سال دوم شماره 2 (پیاپی 6، تابستان 1396)

Due to the fact that the desert provinces experienced a shortage or even lack of water throughout history, so water in these areas has double value. The history of water supply in the Yazd desert province indicates the great tribulations experienced by the people of this province over the history of water supply. The predecessors of the Yazd province provided water for the consumption of agricultural and drinking water by generating traditional means by managing seasonal river waters, springs, groundwater and collected water from atmospheric depression. With the modernization of the modern water supply system, the historic aquifers that formed the water supply process in the province have been abandoned. Because a significant proportion of these structures are still operational. In this regard, this article is descriptive-analytical and based on field observations and interviews conducted with the native experts of Yazd province. In this paper, paying attention to the weaknesses caused by the modernization of water supply systems, the necessity of traditional water supply has been investigated. According to the research, using the capacities of traditional structures existing in the province to manage the construction of water supply systems The necessity is proportional to the goals of passive defense. Among the practical and operational approaches that can be used for non-passive defense studies of the water supply system in Yazd province, is the use of the capacity of traditional structures existing in the city. For this purpose, the article considers the use of the traditional water supply system in urban modern water supply, which is in line with the principles and principles of passive defense.

The need for construction in the least time, with the lowest cost and the best quality, has led the construction industry to the industrial machinery with quick installation. In this regard, the necessity of using new structures and materials to increase construction speed, lightness and extending useful life has been discussed more than before. The aim of this study is to study the new construction structures such as 3D panel, (LFS), tunnel mold and RCM system with permanent insulation (ICF), focusing on economic, executive and technical criteria to study the potential of using these systems in villa villages in the north of the country (Mazandaran province). At first, library studies were conducted to select the effective criteria for selecting the most appropriate method of construction. Then, the required data were collected by questionnaires with comments from experts and building industry experts in construction contractors of Mazandaran province. Finally, after collecting the data, using the ELECTRE method, the most suitable structure has been introduced. Considering all the criteria among the structures, the structure was proposed as the most suitable structure for use in the construction of villa villas in the province.

In designing, implementing, and monitoring or executing emergency projects, there should be a suitable strategy for achieving the goal, but in efficient management, in addition to having a proper strategy, good implementation is all the more important. Because a good strategy with bad performance is like a bad strategy. In the implementation of the Emergency Plan for the Protection of the River of Khan in the area of ​​No. 1 (Fatah Bridge), good and proper management strategy is defined in the shortest time and with proper quality are the objectives of the design and construction of the project, which is discussed in this paper and the element Strategic management of work is described in separate terms and in a combination of implementation. The strategy for implementing the work from a tangible form and three factors has already changed to EPCF, BOT, Buy Back and ... and can not be combined with a three-factor strategy and even new methods Like the EPCF, etc. Emergency schemes, which can be deployed faster without management strategy. Therefore, in implementing the Emergency Plan of the River Khan, the contract and the contract are subject to significant changes, and with the addition of a design consultant along with the operator (water drain), on the one hand, and the design consultant along with the main employer (Tehran Engineering Technical Advisor) The other three-factor design and implementation approach has been abandoned in its custom form. On the other hand, a new management strategy has been developed to accelerate the implementation of the work, since the design, implementation and monitoring, along with control and monitoring and quality control It was assigned to the teams present on the scene and combined with the design, implementation, monitoring, control, management and control strategies Monitoring and communication, communication, planning with accompanying its realization on the basis of possible changes in the plan in the face of environmental and administrative conditions, and the management decision-making process for re-opening the nodes in the implementation stage to achieve the goal of implementing the work in the shortest defined time and quality. It was adapted to allow the Emergency Plan to implement river protection at No. 1 in time and implement appropriate quality. Eventually, the Emergency Plan for the river Kane was defined for 6 months, and with the management strategy, the work was done in the form of a plan, but with the financing of the request from the contractor and the consultant in 7 months to the temporary delivery. In this article, we discuss the management strategy and its advantages and disadvantages. Finally, in the section on concluding, ways to improve it are recommended based on the work carried out in the Emergency River Project. The same plan for the Emergency Plan for the 1st phase, the design and rehabilitation project at the intersection with the Tehran-Karaj motorway (Re-Water Consultant Engineers, March 2015), has been implemented by a three-factor method by the consultant and the water reclaiming organization. So far, more than 2 years since the start of its operation, it has not yet arrived.

Ballast shaking is one of the most significant adverse effects of explosion operations in construction projects and surface mines, and in case of control, it will lead to extensive damage to the surrounding structure. Therefore, accurate prediction of these vibrations is essential in minimizing its environmental effects. The goal of the current paper is to investigate and predict the results of the ballast operation on the Shur River dam structure. The application of the ANN as a powerful tool in predicting vibration generated from explosion operations has been studied. In addition to the ANN, experimental models have been used for this work. Different statistical criteria such as RMSE have been used to evaluate the performance of the proposed models in predicting vibrations. The results indicate that the values by the ANN are closer to real values and ANN has a much higher accuracy than other empirical models in predicting the vibration caused by the explosion operation.

Undoubtedly, the construction industry is one of the most dangerous industries in terms of injuries and human casualties. One of the most important reasons for accidents was the lack of identification of the causes of doing dangerous work and the non-observance of safety issues, so identifying and analyzing the factors that cause construction workers to take high-risk jobs is a very important step. To secure the workshop. One of the most important causes that can lead to high-risk activities is the high-risk worker involved in the project. Since the source of work stress is job dissatisfaction, it is crucial to examine this issue. But the important thing is that job satisfaction is a general concept; in other words, job satisfaction will be achieved by realizing a set of factors. Therefore, in this research, we tried first to identify the factors affecting job satisfaction separately. Then a questionnaire was prepared for 70 people working in three development workshops. Using a fuzzy method, the importance of each of the above factors was scored. In the end, by means of a hierarchical analysis method, ranking criteria and the most important factor are identified. Meanwhile, with suggestions to control the very important factors, it is possible to prevent the occurrence of accidents in development projects.

Monitoring and evaluation are of utmost importance, so that without the creation of a coherent and well-established system, will not have a remarkable efficiency. These oversights are targeted to improve and promote the projects / plan execution quality in the organization while utilize the knowledge and experience of specialists in enhancing the researchers’ activity. Today, the construction sector is encountered many disruptions including low quality constructed buildings. In order to cover the technical inspection services of the building, there is a specific oversight on construction, based on rules and regulations on building subjects. However, due to the number of decision-making centers on building standards such as Construction Engineering Organization, Institute of Standards and Industrial Research, Municipality, and the Ministry of Roads and Urban Development, the supervision and technical inspection of the building sector are in difficulty. In this research, firstly, FMEA method will be used to identify and prioritize the factors affecting the monitoring difficulties in the construction projects of Iran. Then, in order to prevent these problems from occurring in the country's construction projects, some course of actions are presented.