Juniper Publishers Journal Of Civil Engineering

 Civil Engineering Research Journal-Juniper Publishers   Abstract In this literature review paper, undergraduate senior Civil Engineering students from California State University, Northridge, under the supervision of Dr. Tadeh Zirakian and Dr. David Boyajian, introduce a research on orifice meter and its applications in real life while analyzing the effect of variables, such as flow, velocity, pressure, and volume. Orifice flow meter is the most commonly used device for gas flow measurement. For a most accurate measurement, the orifice meter should be applied to gas flows, which are steady or vary slowly with time, are in the turbulent flow region, and are well below sonic velocity. The gas should be single phase and not contain suspended particles. Availability of sufficient permanent pressure loss is a requirement for any head-measuring device and must be considered in its application. Completion of this virtual research achieved several educational endeavors, namely enabli...

 Civil Engineering Research Journal- Juniper Publishers   Abstract Positioning is considered as one of the most important problems in civil engineering and surveying works. Today, satellite techniques are widely used for positioning. Global navigation satellite systems provide three-dimensional coordinates (latitude, longitude, and height), related to the reference ellipsoid surface. In most engineering projects, however, orthometric height related to the geoid is required. Therefore, separation between ellipsoid and geoid need to be known to convert ellipsoidal height into geoidal height which nearly approximates mean sea level. The ellipsoid is a mathematical surface, while the geoid is a physical one. This leads to problem of modelling the geoid. In this paper, multiple regression method was used to model the geoid in a defined area that resembles a big city. Riyadh city, capital of Saudi Arabia has been used as a case study. It has been found that fifth degree polynomials ...

 Civil Engineering Research Journal-Juniper Publishers   Abstract Innovation in the construction sector occurs as stepwise reconfigurations of subsystems, but sometimes the effect of many systems coincides and there is so called radical change. Stepwise reconfigurations of individual systems such as windows, insulation, and heat recovery systems have made it possible to heat buildings with preheated inlet air instead of water radiators. Thus, making building more sustainable, cheaper and resource-efficient; the potential for radical change has been achieved. The question is then why not every new building uses preheated inlet air? The reason is not the lack of innovation or new technologies. It is rather connected to malfunctioning structures related to incentives, collaboration, testing, and validation, resulting in norms and standards that aim to reproduce existing technologies, preferring incremental innovations over radical ones. This article argues that testbeds and Livin...

 Civil Engineering Research Journal- Juniper Publishers   Abstract The flow in the composite channel is different from the simple channel due to the strong flow exchange between the main channel and the flood plain. In this study, the flow pattern of composite channels under non-vegetated and parallel vegetation conditions was investigated. To investigate the effect of vegetation density on flow pattern, the ratio of the distance between plants to their diameter (L / D) was used. This ratio was assumed to be 3, 8 and 16. The results showed that the longitudinal velocity and average depth velocity in the main channel for the vegetation-less state were less than vegetation-state and the opposite was observed in the floodplain. In the vegetation-free state, as the main channel moves toward the floodplain, the average deep velocity decreases, and then increases in the joint season between the main channel and the floodplain, and then continues downward. In a parallel arrangement, ...