Evaluation of Ring Road Drainage Structure (Case Study Megenagna to Bole Road)
| dc.contributor.advisor | Daniel, Fikresilassie (PhD) | |
| dc.contributor.author | Yisake, Desalegn | |
| dc.date.accessioned | 2022-02-18T04:23:02Z | |
| dc.date.accessioned | 2023-11-11T08:32:37Z | |
| dc.date.available | 2022-02-18T04:23:02Z | |
| dc.date.available | 2023-11-11T08:32:37Z | |
| dc.date.issued | 2021-11 | |
| dc.description.abstract | The Purpose of the study is to assess the Performance of Drainage Structures of the Ring Road from Megenagna to Bole Round About and gives a mitigation measures regarding the drainages structure along the Road. An exploratory method of research has been used in the study. The study uses both primary and secondary instruments of data collection. The primary data collection instruments are observation, measuring the geometry (width and height) of existing cross drainage structures on the site, photographs that show the existing drainage structure conditions. The secondary data sources are Rainfall data, soil type, land use, geological map, and DEM data and QGIS 3.16 (open-source software) uses for watershed delineation of the catchment and extraction of other important geometric characteristics (i.e length of longest flow path, slope, elevation of the river and area of the catchment). Hydrological analyses have been carried out by using Soil Conservation Service (SCS) curve number Method and Rational method, the hydraulic analysis computed using the HEC RAS (open-source software) that to determine water surface elevations at all locations of interest for either a given set of flow data (steady flow simulation). The next step is to check the adequacy of the existing drainage system that suite the site conditions for the computed discharge, thus based on the hydraulics result, the major river exist around imperial not functioned well for the 100-return period, so shall be replaced with the new Bridge as span of 15m and 3.5m, which will accommodate the incoming 100-year discharge. The minor river exists between Ayat hospital and Imperial Round about, it is not having a significant flow and Can be retain as it is, only required maintenance and clearing of the channel. Regarding to the storm drainage all the inlets are not functioned properly due to complete damage of inlets and blockages of by rubbish/dribs. Therefore, this study recommends to maintain all the damaged inlets and clear the drainage system that has been blocked by rubbish/ dribs. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/30198 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Hydrological analysis | en_US |
| dc.subject | SCS | en_US |
| dc.subject | Rational method | en_US |
| dc.subject | Hydraulic analysis | en_US |
| dc.subject | Steady flow simulation | en_US |
| dc.subject | 100-return period | en_US |
| dc.title | Evaluation of Ring Road Drainage Structure (Case Study Megenagna to Bole Road) | en_US |
| dc.type | Thesis | en_US |