Causes and effects of poor drainage system on the asphalt pavement layer: a case study in agaro to bedele road
Table Of Contents
25 Description and Function of Road Drainage System – – – – – – – – – – – – 9
251 Description of Road Drainage Systems – – – – – – – – – – – – 9
252 Functions of Road Drainage Systems – – – – – – – – – – – – 10
26 Failures of Road Drainage System – – – – – – – – – – – – – – – – Effects
27 Effects of Poor Drainage on Roads – – – – – – – – – – – – – – – – poor
28 By poor drainage effects of water on road – – – – – – – – – – – – – – 11
29 Culverts – – – – – – – – – – – – – – – – – – – – – – – – 11
210 Components of a road and pavement drainage system – – – – – – – – – – 13
2101 Ditches – – – – – – – – – – – – – – – – – – – – Erosion
2102 Erosion Control in Ditches – – – – – – – – – – – – – – – 14
211 Necessities to Construct Drainage System – – – – – – – – – – – – – 14
212 The Criteria for Roadside Channels – – – – – – – – – – – – – – – 15
213 Design Flood for Road Drainage System – – – – – – – – – – – – – 15
214 Flow Velocity in Road Drainage System – – – – – – – – – – – – – – 15
Chapter THREE
: – – – – – – – – – – – – – – – – – – 16 METHODOLOGY – – – – – – – – – – – – – – – – – – – 16 31 Research Methodologies – – – – – – – – – – – – – – – – – – – 1632 Selection of the Study Area – – – – – – – – – – – – – – – – – – period
33 Study period – – – – – – – – – – – – – – – – – – – – – 18
34 Research design – – – – – – – – – – – – – – – – – – – – – 18
35 Study population – – – – – – – – – – – – – – – – – – – – – 18
36 Sample size and sampling procedures – – – – – – – – – – – – – – – 18
37 Study variables – – – – – – – – – – – – – – – – – – – – – collection
38 Data collection process – – – – – – – – – – – – – – – – – – – 20
39 Data processing and analysis – – – – – – – – – – – – – – – – – – 21 310 Ethical considerations – – – – – – – – – – – – – – – – – – – 21
311 Data quality assurance – – – – – – – – – – – – – – – – – – – 21
312 Limitations of the study – – – – – – – – – – – – – – – – – – – 22
313 Hydrological Analysis – – – – – – – – – – – – – – – – – – – 22
314 Hydrological Equations for Determining Peak Flood – – – – – – – – – – Method
3141 Rational Method – – – – – – – – – – – – – – – – – – 23
31411 Runoff Coefficient – – – – – – – – – – – – – – – 25
31412 Rainfall Intensity – – – – – – – – – – – – – – – – 26
31413 Time of Concentration – – – – – – – – – – – – – – 26
31414 Catchment Area – – – – – – – – – – – – – – – – 27
3142 The SCS method – – – – – – – – – – – – – – – – – – 28
31421 Catchment Area – – – – – – – – – – – – – – Rainfall-Runoff
31422 Rainfall-Runoff Equation – – – – – – – – – – – – – – 28
31423 Time of Concentration – – – – – – – – – – – – – – Curve
31424 Runoff and Curve Numbers – – – – – – – – – – – – – 32
31425 Hydrological Soil Groups – – – – – – – – – – – – – 34
315 Investigations of Design and Construction Practices on the study area – – – – – 34 3151 Design and Construction Practice at Station 18+160 – – – – – – – – 35 3152 Design and Construction Practice at Station 24+200 – – – – – – – – 36 3153 Design and Construction Practice at Station 42+120 – – – – – – – – 37
Chapter FOUR
– – – – – – – – – – – – – – – – – – – 39 RESULT AND DISCUSSION – – – – – – – – – – – – – – – 39 41 Results from questionnaires analysis – – – – – – – – – – – – – – – – 39411 Causes and effects of poor drainage system on asphalt road that response from the Engineers – – – – – – – – – – – – – – – – – – – – 39
4111 Causes of poor drainage on the flexible pavement road – – – – –
4112 The effects of poor drainage system on the road – – – – – – – 40 4113 Appropriateness of the drainage system – – – – – – – – – 42
4114 State of the drainage services – – – – – – – – – – – –
412 Causes and effects of poor drainage system on asphalt road that response from road users – – – – – – – – – – – – – – – – – – – – – 43
4121 Level of road usersΓ’β¬ΕΈ satisfaction of the drainage system – – – – – 44 413 Causes and effects of poor drainage system on asphalt road that response from the residents – – – – – – – – – – – – – – – – – – – – 45
42 Results from observation and photography – – – – – – – – – – – – – – 46
421 Causes and effects of poor drainage system on asphalt road Surface due to poor drainage that collected from the field with the photography – – – – – – – 47
43 Results from Hydrological Analysis – – – – – – – – – – – – – – – Watershed
431 Descriptions of Watershed Area – – – – – – – – – – – – – – 51
432 Computation of Catchment Parameters – – – – – – – – – – – 52 4321 Catchment Parameters at Station 18+160 Drainage system – – – – 5at
4322 Catchment Parameters at Station 24+200 Drainage System – – – – 58
4323 Catchment Parameters for Design and Check at Station 42+120 – – – 58
44 Peak Discharge Computation – – – – – – – – – – – – – – – – – – 59
441 Peak Discharge at Station 18+160 Drainage System – – – – – – – – 59
Chapter FIVE
– – – – – – – – – – – – – – – – – – – 62 CONCLUSION AND RECOMMENDATION – – – – – – – – – – 62 51 Conclusion – – – – – – – – – – – – – – – – – – – – – – – 6252 Recommendation – – – – – – – – – – – – – – – – – – – – – 63 REFERENCES – – – – – – – – – – – – – – – – – – – – – – 64 APPENDEX – – – – – – – – – – – – – – – – – – – – – – – 67
APPENDIX A: Time of Flow, Unit Peak Discharge, Velocity of flow and SCS CN Charts 67 APPENDEX B: Roughness and Runoff Coefficient Values and Parameters for the Design of Drainage Structures – – – – – – – – – – – – – – – – – – – – – – 74 APPENDIX C: Questionnaire Type – – – – – – – – – – – – – – – – 82
Thesis Abstract
AbstractIn this study, we investigate the causes and effects of poor drainage systems on the asphalt pavement layer, with a focus on the Agaro to Bedele road in Ethiopia. Poor drainage is a significant issue that can lead to pavement distress and deterioration. The research aims to identify the specific factors contributing to the poor drainage system along this road and assess the resulting effects on the asphalt pavement layer. Through field surveys, data collection, and analysis, we found that inadequate road slope design, insufficient drainage infrastructure, and lack of maintenance are the primary causes of poor drainage along the Agaro to Bedele road. These factors lead to the accumulation of water on the pavement surface, causing distress such as rutting, cracking, and potholes. Additionally, the presence of water weakens the pavement structure, reducing its load-bearing capacity and overall service life. The effects of poor drainage on the asphalt pavement layer are significant and detrimental. Prolonged exposure to water leads to reduced structural integrity, increased roughness, and decreased skid resistance, posing safety hazards to road users. Moreover, moisture infiltration accelerates the rate of pavement deterioration, necessitating frequent repairs and rehabilitation efforts, which are costly and disruptive to traffic flow. To address these challenges, the study recommends implementing proper drainage design principles, such as adequate road cross slopes, longitudinal gradients, and effective drainage systems including ditches, culverts, and stormwater management practices. Regular maintenance activities such as debris removal, cleaning of drainage structures, and prompt repairs are essential to ensure the longevity and performance of the asphalt pavement layer. Overall, the findings of this study highlight the critical importance of addressing poor drainage systems to preserve the integrity and functionality of asphalt pavements. By understanding the causes and effects of poor drainage, road authorities and engineers can implement proactive measures to mitigate these issues, enhance road safety, and prolong the service life of the pavement infrastructure.
Thesis Overview
Blazingprojects Mobile App
π Over 50,000 Research Thesis
π± 100% Offline: No internet needed
π Over 98 Departments
π Thesis-to-Journal Publication
π Undergraduate/Postgraduate Thesis
π₯ Instant Whatsapp/Email Delivery
Related Research
Analysis and design of a sustainable stormwater management system for urban areas...
The project titled "Analysis and design of a sustainable stormwater management system for urban areas" focuses on addressing the critical issue of sto...
Analysis and Design of Sustainable High-Rise Buildings Using Green Building Technolo...
The project titled "Analysis and Design of Sustainable High-Rise Buildings Using Green Building Technologies" focuses on the integration of green buil...
Analysis and Design of Sustainable Road Pavement Materials...
The project titled "Analysis and Design of Sustainable Road Pavement Materials" focuses on advancing the field of civil engineering through the invest...
Analysis and Design of Sustainable Urban Drainage Systems...
The research project titled "Analysis and Design of Sustainable Urban Drainage Systems" aims to address the critical challenges associated with urban ...
Implementing Sustainable Construction Practices in Urban Infrastructure Development...
The project titled "Implementing Sustainable Construction Practices in Urban Infrastructure Development" aims to address the pressing need for sustain...
Implementation of Sustainable Construction Practices in Infrastructure Projects...
The project titled "Implementation of Sustainable Construction Practices in Infrastructure Projects" aims to investigate and analyze the integration o...
Analysis and Design of Sustainable Transportation Infrastructure using Advanced Mate...
The project titled "Analysis and Design of Sustainable Transportation Infrastructure using Advanced Materials" aims to address the growing need for in...
Analysis and Design of Sustainable High-Rise Buildings Using Advanced Structural Mat...
The project titled "Analysis and Design of Sustainable High-Rise Buildings Using Advanced Structural Materials" aims to address the growing need for s...
Design and Analysis of High-Rise Building Structures Using Advanced Materials...
The research project titled "Design and Analysis of High-Rise Building Structures Using Advanced Materials" aims to investigate the utilization of adv...
