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Browsing Road and Transportation Engineering by Issue Date

Browsing Road and Transportation Engineering by Issue Date

Now showing items 1-20 of 152

Discrete Element Method for Slope Stability Analysis

Kebede, Dawit (Addis Ababa University, 2003-07)

A static DEM has been presented to solve slope stability analyses. The method consists of discretizing the soil mass into blocks which are joined by Winkler springs. From relation of forces with stiffness and displacement, ...
Pavement Distresses on Addis Ababa City Arterial Roads, Causes and Maintenance Options

Alebachew, Fiker (Addis Ababa University, 2005-04)

Paved roads in tropical and sub tropical climates often deteriorate in different ways to those in temperate regions, because of the harsh climatic conditions, lack of proper design and quality control, high loads and ...
Effect of Different Types of Filler Materials on Characteristics of Hot-Mix- Asphalt Concrete

Berhe, Zemichael (Addis Ababa University, 2007-02)

Various studies have shown that the properties of mineral fillers have significant effect on the performance of asphalt concrete pavements. This study was intended to investigate the effect of different types of ...
Design Consistency of Horizontal Alignments on Two - Lane Trunk Roads

Mekonnen, Behailu (Addis Ababa University, 2007-02)

Design consistency is the conformance of highway’s geometric and operational features with driver’s expectancy. A technique to evaluate the consistency of a design is to evaluate changes in operating speeds along ...
Investgation of Effects of Imperfection and Their Significance in Analysis Results

Tadesse, Haimanot (Addis Ababa University, 2007-02)

Structural systems are prone to global as well as member imperfections in geometry. These imperfections are accounted for when considering structural stability and strength requirements of both sway and non-sway frames. In ...
Capacity Evaluation of Roundabout Junctions In Addis Ababa

Getachew, Tewodros (Addis Ababa University, 2007-04)

This thesis addresses the most important element of operational performance of roundabout traffic intersections in Addis Ababa: capacity analysis. The relation between a roundabout performance measure and capacity is ...
Causes of Road Traffic Accidents and Possible Counter Measures on Addis Ababa-Shashemene Roads

Segni, Getu (Addis Ababa University, 2007-04)

Road traffic accidents occur as a result of several factors associated with the traffic system, namely: road users, road environment and vehicles. In year 2004/5, 93% of all accidents involved human factors, 5% accounted ...
Analysis and Design of Struts to Node Connection of Space Truss In Buildings

Worku, Emebet (Addis Ababa University, 2007-10)

Construction of special structures such as space frames and trusses, shells and domes is to provide large spaces with aesthetically pleasing appearance. Such structures are nowadays finding wide applications in our ...
Investigation into the appropriate laboratory testing procedures for the determination of the index properties of the Lateritic Soils of Western Ethiopia (Nedjo-Jarso-Begi Road area)

Million, Wossen (Addis Ababa University, 2009-11)

The appropriate laboratory testing procedures while carrying out index property tests of lateritic soils found in western Ethiopia (Nedjo, Jarso and Begi areas) have been investigated. Classification and composition of ...
Blending of Cinder With Fine Grained Soil to be Used as Sub-Base Materials (The Case of Butajira Gubre Road)

Eshete, Yitayou (Addis Ababa University, 2011-07)

In road construction, the use of locally available materials should be made as much as possible. However, these materials are not always suitable and when appropriate material cannot be found in areas close to the ...
Methodology for Traffic Safety Audit and Inspection of Bridges

Eshetu, Tegegne (Addis Ababa University, 2011-09)

Bridges are structures including supports erected over a depression or an obstruction for carrying traffic and other moving loads. They are crucial elements of the road design elements and transportation infrastructure. ...
Assessing & Quantifing the Level of Traffic Congestion at Major Intersections in Addis Ababa (A Case for East-West Corridor)

Taddesse, Wondwossen (Addis Ababa University, 2011-09)

Traffic Congestion is an ever growing chronic problem in the transportation system soon after the invention and mass production of automobiles. All major cities both in developed and developing countries are facing the ...
Optimizing of Freight Transport and City Logistics Activities in Addis Ababa

Nebyi, Gebremariam (AAU, 2011-09)

Though goods distribution is an important part of activity in urban life as it plays a vital role in urban economy in terms of income generation and employment opportunities, nowadays urban freight distribution is creating ...
Costing Road Traffic Accidents In Ethiopia

Mohammed, Murad (Addis Ababa University, 2011-10)

Road accidents have many negative costs that are regarded as socio-economic costs. In recent years, road traffic accidents have caused a significant and increasing socio-economic loss in developing countries in general ...
Standardization of Guidelines for Railway Track Infrastructure Subsystem for Railway System of Ethiopia

Gebeyehu, Yeserah (Addis Ababa University, 2012-01)

Railway transportation, which is needed in the achievement of effective development, is an efficient, cost-effective and it is environmental friendly transport system. In addition to the low railway network connectivity ...
Software Development for the AASHTO and ERA Flexible Pavement Design Methods

Setegn, Amare (Addis Ababa University, 2012-09)

In Ethiopia the number and type of traffic increases and the change is alarming. This leads to the construction of road infrastructures which needs economical and safe design of roads. Nowadays, flexible pavement roads and ...
Optimizing Logistic Chain of Animal Transport and Meat Distribution: Studies on Livestock Markets and Abattoirs in Addis Ababa City

Gudeta, Beshada (Addis Ababa University, 2012-09)

Ethiopia has the largest livestock population in Africa. Livestock production is an integral part of the country’s agricultural production system and the livestock sector constitutes a significant share of the country’s ...
Investigation of the Performance of Unsealed Road Sub Base Materials Used as Wearing Course of Gravel Road (In the Case of Kamashi –Yaso Road)

Merga, Simeneh (Addis Ababa University, 2012-09)

A good road structure may help in reducing the number of accidents. Wearing course is the top layer of the road structure which is the layer exposed to the vehicle tyre and environment. The international roughness index ...
Evaluation and Development of Floriculture Supply Chain in Ethiopia, to Attenuate Environmental Impact and Logistics Cost

Hailemichael, Daniel (Addis Ababa University, 2013-01)

Ethiopia is now Africa‟s second largest flower exporter after Kenya, with its export earnings growing by 500% over the past year. In 2008, there were 81 flower farms employing around 50,000 workers (over 70% women). ...
Concrete Bridge Maintenance

Getachew, Bayu (Addis Ababa University, 2013-05)

So far, the usual practice in Ethiopia to maintain concrete structures is simply plastering and masking the defects (ugly looking) without considering the structural aspect of the structure. But such activities should ...

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