Volume 5 Issue 1

Authors: Adel Francis; Edmond Miresco

Abstract: The more complex a project is, the more attractive non-traditional project delivery methods like Design-Build become. These delivery methods allow decisions with several options to be postponed. To account for these alternatives, existing generalized scheduling methods integrate decisions into their processes; however, these methods only use traditional precedence dependencies for network calculations. This paper contributes to the existing body of knowledge by extending the traditional logic and modeling execution alternatives using chronographic time-scaled point-to-point relations, production-based dynamic relations and function dependencies between ongoing activities. Using the Monte-Carlo simulation, the paper simulates the impact of operations and reworks uncertainties for the execution alternatives. For companies, this approach represents scheduling constraints in a flexible manner and provides a feasible solution for modeling the complexity of real-world projects.

Keywords: Simulation; Execution Alternatives; Uncertainties; Chronographic; Scheduling; Project; Construction

Doi:10.5963/JCES0501001

Authors: Nawari O. Nawari; Adel Alsaffar

Abstract: Building Information Modelling (BIM) is one of the most important developments in design and construction industries that is greatly affecting current practice activities. BIM is becoming a common language in the architecture, engineering, and construction (AEC) industry and is being recognized as a driver for change on a global scale. However, in the Middle East and Africa, students are falling behind in attaining this new tool. Hence, there is a critical need in these regions to train future architects and engineers in BIM advancements. There are, nevertheless, a number of challenges facing academic organizations in embracing BIM in their curriculums for educating future professionals. This research aimed to address these challenges and provide a solution framework for introducing BIM to Kuwait students. The paper explored the current state and future approaches of incorporating BIM into architectural and engineering curriculum in Kuwait institutions and described both a general strategy and execution plan for BIM education in Kuwait.

Keywords: Building Information Modelling (BIM); BIM Education; BIM Framework; BIM Knowledge; Training; BIM Curricula

Doi:10.5963/JCES0501003

Authors: Olumide Moses Ogundipe; Sukanmi Dada

Abstract: This study evaluates asphalt concrete with and without hydrated lime using the Marshall mix design method with the aim of determining the optimum amount of lime required to modify the asphalt concrete. The hydrated lime was added by the dry method to the aggregates blend of asphalt mix with different percentages of hydrated lime (1.0 - 8.0 %) and the bitumen content ranged from 5.5% to 7.5%. The optimum binder and lime contents were found to be 6.5 % and 2.0%, respectively. The Marshall stability of the asphalt concrete with hydrated lime at 2% was 8.69 kN, while that of unmodified asphalt was 6.96kN, indicating that introduction of lime results in better performance. Generally, the lime modified asphalt samples had stability in the range of 4.12kN to 8.69kN, while the unmodified asphalt has stability in the range of 5.49 kN and 6.96kN. Both the lime-modified and unmodified forms conform with the General Specification, Road and Bridges. The flow values for the asphalt samples with lime were between 2.0 and 3.5 mm for 5.5% - 6.5% bitumen content, while the unmodified samples have values between 2.5 and 3.5 mm but both did not meet the specifications at higher bitumen content. The study showed that it is a good idea to introduce lime into asphalt, as it will result in production of asphalt mixture.

Keywords: Hydrated lime; Asphalt; Marshall; Stability; Flow

Doi:10.5963/JCES0501002

Authors: Hedye Saeedi; Arash Baghdadi

Abstract: Although transport in cities has long been a concern for urban planners, the unprecedented increase in urbanization and the emergence of numerous means of transportation after the Industrial Revolution has greatly increased its importance. Since then, urban transportation has become one of the greatest challenges in urban planning worldwide. The impact of urban rail networks on urban land development is not linear, but the related structural planning has great influence on population absorption and the potential physical, social and economic development of regions. Therefore, the growth and control of such regions is possible. The objective of this article is to evaluate the effects of public transport system development on the physical, social and economic structures of cities. Information was collected from previous research and documented studies, and from interviews achieved with a designed questionnaire. The studied group consisted of citizens living near the Chitghar subway station in Tehran, station subway in Chitghar station of Tehran. Study participants were asked about the physical, social and economic impact of TOD on their daily lives. This research used a variety of methods to examine the beneficial impacts of Transport Oriented Development (TOD) and development near stations, including qualitative and quantitative approaches and data collection. Questionnaires were distributed between survey distributions to citizens living near the station. The secondary data was analyzed by SPSS22. The results of this study indicated that development surrounding public transport routes and terminals emphasize activities and necessities such as walking, cycling, public lighting, public security on the streets, job creation and other factors which affect life near subway stations. Thus, public transport oriented development can be categorized into physical, social, and economic indicators in cities.

Keywords: Public Transport Oriented Development; Physical Organization; Economical Organization; Urban Transport; Social Organization

Doi:10.5963/JCES0501004