Analysis of Pavement Drainage System: A Case Study along Bure-Injibara Road section

Abstract

histhesis presents the findings of a pavement drainage system analysis along the Bure Injibara road in Amhara region, Ethiopia. Drainage is one of the most important factors to consider while designing, building, and maintaining roads. The pavement drainage system's is good to keep onsite water from standing on the surface and to transport offsite storm runoff from one side of the road to the other. To allow water to run off and away from the road as fast as possible, an effective drainage system is required. The objective of this research is to find out what's causing the pavement drainage problem and to assess the quality of drainage for current pavement layer materials. This study necessitates the gathering of both primary and secondary data. Site visits and field studies of current pavement drainage systems are the key data sources. Secondary data includes things like land cover, topographical maps, and published and unpublished papers. The study used both descriptive and experimental research methods. The descriptive research focuses mostly on the current pavement drainage conditions and the reasons of the drainage problem. Laboratory testing on selected test sections were conducted as part of the experimental research strategy to acquire a better knowledge of the pavement material layers. Drainage Requirements in Pavement Software was used to determine the drainage quality and soil conservation service curve number was used to compute direct runoff for a particular rainfall. The results show that the time to-drain for cross slope is good, and for uniform slope is fair. On the study, visual pavement drainage assessments, sampling pavement material and necessary laboratory investigations were performed in order to gain a better understanding and identify drainage problems. Traffic load, climatic condition, pavement materials layer, lack of inlets, lack of proper maintenance, and disposal of solid waste into the drain, traffic, construction quality, environmental effects, topography, drainage characteristics, and maintenance were identified as the major causes of pavement drainage problems. Finally, the purpose of this study was to determine the causes and implications of the Bure to Injibara town road corridor's flexible pavement drainage system.