https://elibrary.khec.edu.np/handle/123456789/185 2026-07-17T04:30:09Z https://elibrary.khec.edu.np/handle/123456789/194 Title: PERFORMANCE ASSESSMENT OF CRASH BARRIERS USED IN ROAD SAFETY: A CASE STUDY OF MALEKHU KURINTAR SECTION OF THE PRITHVI HIGHWAY Authors: Bati, Saru; Shahi, Thusitha Chandani Abstract: Hill roads in Nepal are comprised of critical geometry and limited roadway clearances. It causes high number of runoff roadway type of accidents with single vehicle. These accidents often carry huge number of fatalities and severe injuries. Installation of crash barriers is the most effective way of preventing such accidents along hill roads. However, the existing practice of construction of crash barriers does not show the satisfactory results. Therefore, this research aimed at the evaluation of typical crash barriers constructed along the valley side of highway. Analysis of the road accident of Malekhu-Kurintar section of Prithvi Highway record shows that this section has relatively higher accident rate and most of the accidents are runoff roadway type. Further, these accidents are mainly caused due to either the absence or the failure of the crash barriers along the valley side of the highway. On the basis of field records, kinetic energy absorbed by the crash barriers and their deflections was investigated by application of computer based analysis tool ABAQUS V6.10. It has given satisfactory results on the deflection of W-beam and plum concrete barriers due to the impact of vehicle moving in various range of speed. 2020-09-01T00:00:00Z https://elibrary.khec.edu.np/handle/123456789/193 Title: DEVELOPMENT OF PERFORMANCE GRADING MAP OF NEPAL BASED ON SUPERPAVE SYSTEM Authors: Kharbuja, Sunita; Shahi, Thusitha Chandani; Duwal, Rajan Abstract: The Performance of the bituminous binder plays important role in the overall performance of the pavement system. One of the major cause of pavement failure is the bitumen grade, i.e selection of suitable grade of bitumen. Therefore, performance grading of bituminous binder is inevitable for the specific temperature and climatic zones. This study is focused on the determination of performance grading of bituminous binder for various temperature zones in Nepal. In this study, twenty one years’ daily maximum and minimum secondary temperature data of 70 meteorological stations were collected and were analyzed for temperature zoning. Performance grading of bituminous binder was conducted with the help of Strategic Highway Research Program (SHRP) and Long-Term Pavement Performance Program (LTPP) prediction models. The concept of Superpave has been adopted for the analysis, which stands for superior performing asphalt pavement. The Superpave mix design includes a new analysis system based on performance characteristics of the pavement layer. The bituminous binder grades for Nepal have been determined on the basis of air temperature thereafter predicting the pavement temperatures. The study has determined seven different performance grade zones based on SHRP and four different performance grade zones based on LTPP model. The study synthesized the Performance Grade (PG) map of the country. 2020-09-01T00:00:00Z https://elibrary.khec.edu.np/handle/123456789/192 Title: MANAGEMENT OF INTERNET BANDWIDTH IMPLEMENTING COOVACHILLI AND FREE RADIUS Authors: Phoju, Rabindra; Bhandari, Krishna Prasad Abstract: With rapid growth in popularity and use of Internet in academic institutions, the institutions are struggling to keep up with the demand. They need capability to effectively control, monitor and optimize the available bandwidth to ensure good service at optimum cost. This paper has described implementation of Coovachill and free radius for management of internet bandwidth in academic institutions. During this research, freeware tools such as Freeradius and CoovaChilli have been used to manage Internet bandwidth on a per-user basis based on user credentials. The mechanisms have been used to control bandwidth of Wireless users. Same can be used for wired connections also. When a user tries to connect, the user is redirected to a captive portal under CoovaChilli. There the user provides login and password. Based on the credentials thus provided, CoovaChilli checks identity with the Freeradius. If authorized, the client is allowed access with the bandwidth as mentioned in the profile of the user in WISPr attributes define in Radreply table of Freeradius. When the user is not authorized, CoovaChilli sends an error message. This paper demonstrates that bandwidth can be effectively monitored, managed and optimized by using cost-effective open-source tools in the existing network scenario of the institution. 2020-09-01T00:00:00Z https://elibrary.khec.edu.np/handle/123456789/191 Title: Urban growth, Land readjustment, Institutional and legal framework, Kathmandu valley. Authors: Karmacharya, Sunaina Abstract: Urban expansion of Kathmandu Valley is taking place at the fast rate challenging urban managers and planners of the city. In-migration has resulted in the unplanned urban growth of the city with the shortage of serviced land for urban development in Kathmandu. So Land Readjustment (LR) technique has been used as urban land development tool by the government. There are twenty two LR projects completed, and some of the projects are ongoing in the valley. The overview of the Land Readjustment technique of Kathmandu Valley has been done to explore the required measures needed to reform the existing legal and Institutional Framework and procedure of LR. Among the implemented LR projects, Nayabazar Land pooling has been selected for the case study as almost all the plots have been developed. Now, it is a dense residential neighborhood. The instruments used for research are literature study, in-depth interviews with different stakeholders of LR projects and landowners. Field visit and questionnaire survey in case study area are conducted regarding the street network and open space of the area. The existing system of LR technique is studied relating it with international experience mainly the case of Germany and Japan to draw positive inferences to explore the wider scope of LR technique for the comprehensive development in urban areas. 2020-09-01T00:00:00Z