Ethiopia Institute of Technology- Mekelle
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Item Investigation the Causes of Delay and its Impact on Urban Road Projects in Shire Town –Tigray(Mekelle University, 2025-02-21) Goitom TsehayeIn construction, the word "delay" refers to something that happens later than expected, according to schedule, specified in the contract or beyond the date agreed by the parties to deliver the project and one of the most common issues considered during implementation of construction projects. Construction delays have an impact on more than just construction industry, but also an Influence on the overall economy of a country like Ethiopia. Relative Importance Index (RII) analysis was used to test the agreement between different groups of respondents participated in the questionnaire survey, and to rank the most causative factor of delay in urban road projects in case of shire town. This project identified thirty nine (39) causes of delay. There were forty (40) valid Questionnaires which received back from Contractors, Consultants, and employer. The objective of the project is to investigate the causes of delay and their impacts in construction of urban road projects in case of shire town. The causes of delay were grouped in to seven (7) as client related delays, consultant related delay, contractor related delay, material related delay, equipment related delay, Labor related delay and external related factors or outside the Control of Either Party to the Contract. The project study identified and ranked the top or most causative factor for delay in urban road construction projects are: Lack of construction materials with relative important index (RII) of (0.85). Escalation of materials prices with relative important index (RII) of (0.845). Force majeure with relative important index (RII) of (0.84). Material market instability with relative important index (RII) of (0.825). Poor communication and coordination with other parties with relative important index (RII) of (0.805). Inaccurate time estimate with relative important index (RII) of (0.77). Inaccurate site investigation with relative important index (RII) of (0.77). Lack of construction machinery with relative important index (RII) of (0.76). Poor quality of construction materials with relative important index (RII) of (0.74). Improper project feasibility study with relative important index (RII) of (0.715). Poor Communication and coordination with other parties with relative important index (RII) of (0.705). Conflicts between contractors and firm members with relative important index (RII) of (0.70). Economic, financial and environmental impacts have been found the most impacts of delay with relative important index (RII) of 0.93, 0.925 and 0.845 respectively.Item STUDY ON TIME AND COST PERFORMANCE ASSESMENT OF PUBLIC CONSTRUCTION PROJECTS IN TIGRAY REGION: A CASE STUDY IN ABIADI TOWN(Mekelle University, 2024-10-04) LEMLEM DESALEGNMost of Ethiopian construction projects are affected by time and cost performance problems. This research was conducted in an attempt to identify major factors for such problems in the typical environment of Ethiopia Tigray region in case of Abi Adi town. The main objective of this study was to assess the performance of public construction projects in Abi Adi town with respect to their time and cost. And under this, specific objectives were also drown: To evaluate the performance of public construction projects in relation to project time and cost, to identify the factors influencing public construction projects to perform the construction project as per required time and cost in Abi Adi town. Quantitative research method was used to collect the data and questioners were prepared and distributed to the three professional bodies of the construction projects, such as owners, consultants, and contractors. To analysis the data collected from the respondents, performance index and relative important index statistical methods were used. The result of the finding indicated that, high number of time and cost performance of the projects was below target and poor performance. The study has identified client, consultant, contractor and external environment related factors that resulted on time overrun: such as, delay to payment and financial problem, delay to deliver the site, poor communication and coordination, absence of consultant site staff, poor skills and experience of labor, Poor site management and lack of site contractors’ staff, lack of equipment and tools on the market, poor economic condition, Lack of materials on the market and Delay in obtaining permits from municipality. The cost performance factors were; Inadequate project preparation, planning and implementation delay in construction, technical incompetence and poor organizational structure, delays in decisions making by government, failure of specific coordinating bodies, supply of raw materials and equipment by contractors, and resources constraint such as: funds foreign exchange, power associated auxiliaries not ready. Finally the main stakeholders of the construction projects should improve problems related them and use resource effectively and efficiently