Seismic evaluations of typical concrete girder bridges are conducted for two existingrnsimply supported bridges, which are common to the Ethiopian highway construction, andrnfor their counterpart continuous girder bridges. These evaluations are performed for anrnapproximate hazard level of 0.1g...
Lateral load resisting systems are structural elements providing basic lateral strength and stiffness, without which the structure would be laterally unstable. The unstable nature of structures is solved by appropriate provision of bracings systems. In this study, steel bracing is provided at the...
7Jie main focus of this stuc£y 'was to assess tfie practices of rpu6uc sector capacity 6uiUingrntraining program ana imJestigate major Jactors tfiat fiave 6een aaversefy affecting tfiesernpractices in West J[ararge Zone. 7'0 an1've at tfie intenaea target, a aescripti've survey metfioarnwas...
The primary objective of this study was to determine the static moduli of elasticity of concrete mixes made of three different coarse aggregate types found locally and to compare the results of the study with the recommended values by Euro code which we are adopting. To see the effect of static...
Due to efficient dissemination of congested traffic, economic considerations, and aesthetic desirability, horizontally curved steel box girder bridges are usually best preferred structural unites irrespective of their production costs, in modern highway systems, including urban interchanges. The...
The main objective of this study is to identify the educational and job opportu nity olrnlemale individual with hearing impairment in Addis Ababa. To achieve this goal, bothrnqualitative and quantitative methods ol research were employed. The quantitative partrndeals with educational opportunity...
Fundamental natural period of vibration T of the building is an important parameter for evaluation of seismic base shear. Empirical equations given in current building codes like ESEN 1998-1:2015, EC8 (EN 1998-1: 2004), Applied Technological Council of 1978 (ATC3-06, 1978), American Society of...
Effective length is the length of the equivalent pin ended column, which has the samernelastic buckling load as the actual column. The effective length method has been used forrnmany decades as the basis for the design of columns made of reinforced concrete, structuralrnsteel or steel-concrete...
The study has aimed at assessing fa ctors affecting implementation ofrnCommunity skill Training Centers (CSTCs) program in Awi Zone. In thernstudy, a descriptive survey method was used. Four Community SkillrnTraining Centers we re selected by purposive sampling method. All the fourrnCSTCs trainees,...
In bridge design, engineers strive to plan an economical structure that will safelyrntransmit loads to the ground without collapsing or deforming excessively. Since it isrndifficult to predict the exact loading and circumstances that a bridge must withstand, allrnbridge designs include a...
Though different researches have been conducted so far on shear strength of reinforced concrete beam, it is yet not definite to predict it in accurate manner. As a result, different design codes use different empirical formulae based on truss analogy.rnThe truss analogy which was developed...
The growth of population density and shortage of land in urban areas are two major problems for all developing countries including Ethiopia. In order to mitigate these two problems, the designers resort to high-rise buildings, which are rapidly increasing in number, with various architectural...
The design and analysis of a structural member requires the understanding of the possible loads that act on the system in the life span of the structure. For this reason, the stage of construction of precast joist is classified into two, initial stage and final stage. For each stage this study...
In the present day construction industry in Ethiopia, concrete has emerged as the most common building material. Hence careful consideration must be given to factors that affect its strength. One of the factors affecting the strength of concrete is the amount of clayey silt content of sand used in...
Reinforced concrete structures have the potential to be very durable and capable of withstanding a diversity of adverse environmental conditions. However, failures in structures still occur as a result of variety of defects among which premature reinforcement corrosion is one.rnIn the case of...
This study assesses the role of Productive Safety Net Program in meeting food security atrnhousehold level in Hawassa Zuria woreda. The focus of the study was looking into factorsrncontributing to food insecurity, the effects that PSNP has in beneficiary households, thernutilization of transferred...
The situation of residential Kebele houses, which make up 44.4% of the total residentialrnhousing stocks in Addis Ababa is worthy of study in the present context of a globalrnhousing policy of moving away from public housing to embrace a more market orientedrnhousing sector. It is particularly...
Next to smvival, food, clothing and shelter, education is children's greatest need after the agernof six or seven. Without education, chi ldren can do little when they become adults, to improverntheir living conditions and to participate in development activities.rnPrimary education eqUIps people...
Anatolnical features of stein internodes and the leavesrnof Vernonia galamensis (Cass) Less. and Guizotia abyssinicarn(L.:f.) Casso have been studied. Most of the anatomicalrncharacters of the t,ro species are similar and hence arerndescribed together; the stems of both species possessrnuniseriate...
This study was conducted in Mekelle and its surrounding rural areas. Itrnattempted to assess the use of Mirt Mitad and its contribution to householdrneconomy and environment in Mekelle and its surrounding rural areas. Inrnconducting this study, sample survey design was employed and 121...