Woldeyohannes, Semegn (2016) Execution Management of Deep Excavation in Addis Ababa Construction Projects. Masters thesis, Addis Ababa University.
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PDF (Execution Management of Deep Excavation in Addis Ababa Construction Projects)
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Abstract
To alleviate the traffic congestion of the A.A city, it is vital and crucial to allocate underpass and overpass transportation means for the expansion of roads and construction of supportive infrastructure. Although, the construction of high rise building are significantly increasing, especially by financial and commercial institutions as well as by other individual investors for hotel and real state purposes. Those buildings require large parking area, stores and other facilities that can only be alleviated by constructing basements. To construct basements and underground transportation means deep excavation is a must. Deep excavation is an important component of construction which relieves shortage of space and allows usage of underground spaces for different structures. Thus, this thesis is prepared to study practice of deep excavation in scientific way and to develop a better ways for execution of deep excavation in urban areas. The research was undertaken to assess the practices in planning, quality assurance services and execution, identify challenges that need to be addressed and to recommend interventions in order to improve execution management of deep excavation in A.A. civil work projects. Accordingly, a literature review was conducted on related topics, through which numerous variables challenge was identified. In the matter of fact, detailed analyses were accomplished with primary data collected through questionnaire, interviews and by physical observation of projects. The response are found from different professional found in employers, consultants and contractors side and which are engaged on the three civil work construction projects (i.e. building, road & railway). The responses are calculated by using a weight average technique of all groups as per each variable ranked. Based on the findings it is observed that, challenges as safety and health management, lack of recording construction events, wrong calculation of earth pressure and lack of well qualified and experienced professionals found to be the most common outstanding once. Failures encountered and observed from respondents are differential settlement, subsidence of ground, cracks on nearby structures and collapse on adjacent structures including small injuries up to loss of lives of workers and also neighboring community living on adjacent have been recorded & investigated. Recommendations are forwarded by pointing out the responses & expectations from clients, consultants and contractors. Those recommendations cultivate us to adopt quality assurance by implementing recording and analyzing construction events with close supervision. During construction, monitoring execution compliance by regulatory bodies and upgrading professionals experience through continuous professional development trainings are deemed as remedial measure to execute fatal and hazard free deep excavation in A.A.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | Civil and Environmental Engineering |
| Subjects: | Q Science > QE Geology T Technology > TA Engineering (General). Civil engineering (General) T Technology > TD Environmental technology. Sanitary engineering T Technology > TH Building construction |
| Divisions: | Africana |
| Depositing User: | Andriamparany Edilbert RANOARIVONY |
| Date Deposited: | 26 Nov 2018 12:46 |
| Last Modified: | 26 Nov 2018 12:46 |
| URI: | http://thesisbank.jhia.ac.ke/id/eprint/7681 |
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