Crimson Publishers-Civil Engineering Journal

Opinion Fasteners or anchors are widely used to form the connections between non-structural or structural components and the primary reinforced concrete structure. The design of fastenings in concrete is traditionally performed using force-based method, where the design load for the fastening is calculated corresponding to different possible failure modes and the lowest value defines the allowable load that can be applied for the anchorages [1-4]. Under seismic actions, the fasteners in concrete are subjected to relatively strong demands of cycling tension and shear loads as well as opening and closing of cracks intercepting the fasteners (Figure 1). Although the seismic design philosophy for reinforced concrete structures relies heavily on the ductility and nonlinear performance of the structure, the current philosophy for seismic assessment and design of fasteners is primarily force-based, with an indirect check of dis placements performed in certain cases [5]. This approach might be...

Abstract In this educational research study, a group of undergraduate students, under the supervision of Dr Boyajian and Dr Zirakian from California State University Northridge, introduce a designed fluid time-to-drainage model as part of the Senior Design undergraduate course. The model was chosen to be a time-to-drainage device due to the high resistance against pressure as well as being impervious to water. The main objective of this project is to experimentally examine the effects of using sharp and round edge orifices under different values of pressure, on the water flow rate and to inspire minority and international students in engineering to learn the effects of this pressure change and using different orifice geometries, on the fluid flow properties. This research endeavour is hoped to serve as a model for future generations of engineering students to better visualize difficult Fluid Mechanics concepts and thus enhance their overall comprehension of such important material. Rea...

Although nuclear energy currently provides about 20% of U.S. electric power and over half of the nation’s carbon free electricity, the ability of U.S. nuclear power plants to meet increasing demands for electricity and sustain the U.S. life style or even maintain the present one-fifth of US electrical demand is problematic and doubtful. A Union of Concerned Scientists (UCS) report finds that over one-third of the current fleet of 98 licensed nuclear power plants in the United States (65 PWRs and 33 BWRs) will or could be closed within the next decade. Sixty-six of these plants will not be profitable for continued operation by their plant owners. These closures may occur even before expiration of the plants U.S. Government issued NRC License. Meanwhile, the U.S. and world demand for base-load electrical power will continue to escalate. Google now consumes more electrical power than San Francisco, and the advent of electrification of the U.S. vehicular fleet will impose even greater dema...

Abstract Building Information Modeling (BIM) is becoming a well-known established collaboration process in the construction industry. Owners are increasingly requiring BIM services from construction managers, architects and engineering firms. Many international construction firms are now investing in “BIM” technologies during bidding, preconstruction, construction and post construction. The goal of this research is to understand and examine the uses and benefits of 5D BIM for construction project of Pakistan. There are three objectives to this research. First is to make comparative analysis of an existing high rise building with reference to scheduling and cost as done by traditional method. Second is to develop 5D model of high rise building with help of autodesk revit and autodesk navisworks. Third is to make 3D models of 20 and 30 storey building on autodesk revit and navisworks by making 10 storey building as reference to overview the comparative benefits of schedule and cost with ...