About Addis Ababa University Institutional Repository (AAU-ETD)

AAU-ETD is an electronic open access institutional repository of Addis Ababa University that makes available and digitally preserves the scholarly outputs produced at AAU. The repository contains both published and unpublished work including: theses and dissertations,preprint,staff and student publications.

Services provided by AAU Library repository specialist:

  • Create Colleges/Institutes and collections
  • Provide depositing services
  • Train and facilitate community members to add materials
  • Review and add additional descriptive information (metadata) to each record.
  • Maintain open access and ensure preservation of materials
  • Maintain the software and hardware required for continuous service
  • Research copyright and seek permissions

All faculty are invited to submit their research to the AAU-ETD which is operated and maintained by Addis Ababa University Library. For further information please contact us at ________

 

Recent Submissions

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the Case of Rental Houses Developed By Loza and Birhanu Construction Plc,ayer Tena, Addis Ababa, Ethiopia
(Addis Ababa University, 2022-04-01) Biruk Dereje Terefe; Imam Mahmoud Hassen
The housing delivery mechanism in Addis Ababa, Ethiopia is very few and one of the delivery options is rental housing. But only the public rental housing and kebele houses are considered as an option and neglects the private rental housing for decades, the sector rental housing cover more than 55 % including both public and private rental housing stock. From the 55% of rental housing 37% is the share of private rental housing sector that means more than the half of the market. but the government didn’t consider the sector as a significant option for housing development and focused only policies which promote home ownership led by government which is unrealistic and un affordable means of housing delivery. This study examined and assessed private rental housing developer as a viable option for housing development and search the potentials and limitation for developing the sector as one of housing delivery strategies for the future. And it focuses on private rental housing developer and houses constructed by Loza and Birhanu Construction plc. The research used case study method for in depth analysis of the sector; the cases are selected only houses constructed by LBC. Plc. And the data were collected using questionnaires, interview, and analysis of documents and related literatures. The end result and findings revealed that private rental housing sector has a positive impact on the housing delivery mechanisms. Furthermore, private rental housing provision strategies needs a policy support by government and appropriate revision on the housing delivery approaches including some policy instruments focused on rental houses developed by private sector. Key words: Rental housing, private rental housing, private rental houses developers, rental housing policy instruments, Addis Ababa.
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Investigating the Effect of Currency Devaluation on Contractors: A Case Study on Selected Public Building Projects
(Addis Ababa University, 2022-05-01) Haimanot Nibret Mengistu; Wubishet Jekale (PhD)
The National Bank of Ethiopia devalued Birr by 15% against United States Dollar (USD) in October 2017. Since then, the construction industry in Ethiopia has faced price volatility on construction materials. According to prior studies, the construction industry is influenced by currency devaluation, resulting in high inflation, volatile market pricing, and material shortages. This price increase causes contractors to fail in finishing their projects within the acceptable time and quality boundaries, as well as within the anticipated cost boundary. This delays their progress in every way. However, the extent of the impact on construction projects is not well-understood and needs to be studied more closely. Therefore, the main objective of this study is to investigate the effect of currency devaluation on contractors. In particular, this paper aims to determine the effect of currency devaluation on public building projects that were commenced before currency devaluation occurred. It also focuses on contributory trade of works induced by currency devaluation and minimizing the risk of economic loss in construction projects due to currency devaluation for current and future occurrences. Based on a review of literature on the effect of currency devaluation on the Ethiopian construction sector and other countries' currency devaluation issues and measures, a case study research technique was utilized. Secondary data was obtained through document review. Analysis of data demonstrated the impact of the construction project, contributory trade, and strategies that the government should enforce to minimize the risk of devaluation on contractors. The result reviled that the construction cost of four public building projects in Addis Ababa increased by 18.12%, 17.72%, 16.51% and 13.94% because of the price escalation of construction materials tied to the currency devaluation of the Birr. Further, reinforced concrete work, wall and floor finishing work were found contributory to currency devaluation. The study concludes that compensating contractors who work for government projects and were adversely affected by the recent economic legislation adopted by the Government during 2017 to tackle the current crisis and adjusting the value of most contributory trade of works induced by currency devaluation to be increased or decreased based on an index minimizes the risk resulting from currency fluctuation for the future occurrence. On this basis, the government of Ethiopia should pass decisions that allow contracts to be increased or decreased, based on a price index. Keywords: Currency Devaluation, Construction Materials, Construction Industry
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A Study of Alternative Wall Making Materials Selection Using Ahp Method
(Addis Ababa University, 2022-06-01) Behailu Workneh Tolu; Denamo Addissie (PhD)
Material selection is a complex and delicate task determined by the vast number of building material options. Likewise, multiple factors are often considered by the architect or building designer when evaluating the various categories of building materials. As a result, these sets of factors or variables often present tradeoffs that further complicate the decision-making process. To ease the material-selection process, this study examines the relevant factors or variables needed to develop a systematic and efficient material-selection system. Through the analysis of frequency data and results of the study, it has identified the potential factors that will impact designers’ decisions in their choice of wall making alternative building materials, during the design-decision making process. The application of the criteria for the quantitative evaluation and selection of the best alternative building material, using the analytic hierarchy process model, are discussed. The developed decision support system assist designers to assess their consequences in terms of whether or not a material option is likely to be best chosen over the existing conditions. The study also investigates the existing situations in the application of alternative wall making building materials. It assesses the current materials which are being used as a wall making alternative building materials, the extent of usage and barriers to use these materials. Keywords: decision making process; factors or variables; selection criteria; alternative building materials; selection framework; analytical hierarchy process (AHP)
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Developing Built-Asset Maintenance Maturity Rating Model for Public University Buildings in Ethiopia
(Addis Ababa University, 2022-06-01) Zewdu Seblework Tafesse; Asregedew Kassa Woldesenbet ( PhD)
In Ethiopia, a significant amount of funds is invested in mega projects like dams, highways, railways, airports, power plants, public buildings, etc. These investments are showing unprecedented expansion which, by some estimates, has shown a 9-fold growth of the GDP of the construction sector. However, once these projects, be it mega or otherwise, are completed and ownership is transferred, the post-construction phase of asset management is noticeably neglected, if not ignored totally. And this national reality is witnessed in the building facilities of public universities in the country. In this research paper, a modest attempt is made to examine the building maintenance practice of the nation, factors affecting proper maintenance management, and challenges faced. A thorough investigation of the current situation of building facilities of public universities in Addis Ababa is made. Along with that significant focus is made to develop a viable maturity rating model for building maintenance management of public universities in Ethiopia. A multi-case study was conducted on the three public universities in Addis Ababa. The research approach of this study is both deductive and inductive research. Both quantitative and qualitative data are collected from primary and secondary data sources by document analysis, observation, and semi-structured interviews of the FM office and project office representatives of each public university. All the semi-structured interviews, document analysis, and observation data were analyzed using the thematic and statistical analysis method. The three main objectives of this study are effectively addressed. When it comes to identifying factors that influence the proper practice of building maintenance management in public universities in Ethiopia, the main factors were grouped under seven categories and five critical factors. Finally, a built asset maturity rating model is proposed based on the weights calculated by DEMATEL, MCDM analysis weights that can be used as a self-assessment tool by public universities in Ethiopia. Keywords: Facility Management, Built Asset, Maintenance, Maturity Rating Model, DEMATEL
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Developing BIM-Enabled Built Asset Facility Information Management System: A Case of Public Universities in Addis Ababa
(Addis Ababa University, 2022-06-01) Tamiru Mengst Habtu; Asregedew Kassa Woldesenbet (PhD)
Facilities management (FM) is a discipline comprising various processes, activities and maintenance services to support the main functions of built asset facilities. It demands sets of comprehensive information. Lack of information is one of the major challenges in the O & M phase of the built asset. The emergence of Building Information Modelling (BIM) systems, helped to solve the issue and improve the efficiency of built asset facilities management. Currently, the public universities have no data/information and related documents on the built asset facilities. The built asset facilities information management system is conventional and has a major difficulty. Therefore, it is necessary to study BIM-Enabled Built Asset Facility Information Management System. This study aims to explore the current practice of built asset facility information management systems in public universities and identify the required information for BIM-enabled built asset management. The importance of identifying the required information is to facilitate the FM decision-making process. Finally, this study aims to develop the conceptual framework of a BIM-enabled built asset facilities information management system. The study adopted both descriptive and exploratory types of research. A multiple-case study was conducted on the three public universities in Addis Ababa. Data collection and analysis were based on an extensive literature review of similar studies followed by a semi-structured interview, document analysis, and observation. The study adopted both quantitative and qualitative methods. All interview, document analysis, and observation data were analyzed using the thematic and statistical analysis method. The study findings indicated that the FM office in public universities didn’t have the data or information of the old built asset facilities but to some extent, they have as-built drawings for recently completed projects. So, the lack of information has an impact on the time and the cost of the O & M process of the built asset. The FM office practiced the conventional method to capture, visualize, transfer and manage the built asset information. Currently, all the basic, technical, managerial, commercial, financial, and legal information are extremely relevant for built asset management in the selected public universities. Accordingly, to manage the built asset information, the FM office in public universities needs a single platform. As a result, a BIM-enabled FM conceptual framework was proposed. Finally, the future study should further develop the proposed framework and adopt it in public universities. Keywords: FM, Built asset, BIM, BIM-FM Integration, Information requirement, information management system, Asset Information Modeling (AIM).