Civil Engineering
Permanent URI for this collectionhttps://etd.hu.edu.et/handle/123456789/675
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Item EVALUATION OF MICRO AND SMALL ENTERPRISES PERFORMANCE IN 20/80 CONDOMINUM HOUSING CONSTRUCTION: THE CASE OF GULELE SUB-CITY, ADDIS ABABA(Hawassa University, 2019-10-17) ZERIHUN ALEMAYEHU TEKAEthiopia has embarked on a long term development strategy which aimed at achieving sustainable development with all pre-requisites for a middle income country by the year 2025. The poor and deteriorated state of the construction industry with poor performance has detrimental effects to the developments of the industry. Thus, makes construction industry end product encountered many problems in terms of quality, delivery time and cost. Therefore the aims of this study also evaluation on micro and small enterprises that were engaged in 20/80 condominium housing construction at Addis Ababa in terms of quality, delivery time and cost. To achieve the proposed objectives, data were collected through the case study; questionnaire survey and site observation then making detailed discussion and analysis of problems and constraints that were hampering the performance of them. The finding of this research indicates MSEs on the average 67.6% MSEs couldn‟t delivered their activities on the required time, 75.7% MSEs couldn‟t deliver quality product output and 54.05% housing construction project office saves its cost by participating MSEs than that of contractors. On the other hand, on average according to the respondent 78.37% critical challenges were that hamper the performances of MSEs in 20/80 condominium housing construction projects at Addis Ababa. Factors causing delay in delivery of activities for MSEs are: delay in delivery of materials, contractor improper planning and skill shortage whereas factors which affect their quality include poor project management, low quality of materials and lack of experience. On the other hand major factors that cause cost overrun for MSEs in rendering activities are delay in material supply, poor project management and lack of skill. This study contributes to the advance knowledge in the area of enhancing and improving the performance of micro and small enterprises on 20/80 condominium housing construction. And also, its output will be used as a primary input for the government body during amendment and introducing of the new policies on the issues like, challenges that hampers the performance of MSEs and the solutions to overcome those problemsItem ASSESSMENT OF PERFORMANCE FOR PUBLIC BUILDING CONSTRUCTION PROJECTS IN HAWASSA CITY(Hawassa University, 2020-07-18) BITSIT BEKELE YUTURAConstruction industry has complexity in its nature because it contains large number of parties as clients, contractors, consultants, shareholders, regulatory bodies and others. In Hawassa the number of building projects is increasing from time to time. However, it has become difficult to complete projects in the allocated cost, time and quality. The aim of this thesis is to assess performance of public building construction projects in Hawassa city. Data collection techniques used included literature review, interviews and questionnaire surveys. As outcome 58 factors were identified as factor affecting performance of construction projects. The factors classified in to nine categories (cost, time, quality, productivity, client satisfaction, community and regulatory satisfaction, health and safety, innovation and learning and environment) related factors. For the analysis of the data, statistical analysis SPSS software is used. A survey finding confirmed that major factors that affecting performance has been escalation of material prices, material and equipment cost, availability of resources as planned through project duration, sequencing of work according to schedule, number of disputes between owner and project parties, cost of variation order, incomplete drawing and application of health and safety factors in organization. The main key performance indicators have been cost, time, quality and productivity. Finally based on the findings and results some recommendations were givenItem ANALYSIS OF THE EFFECTS OF THREE WHEELERS ON PERFORMANCE MEASUREMENT PARAMETERS OF INTERSECTIONS: A CASE STUDY: ROUNDABOUTS AND SIGNALIZED INTERSECTIONS IN HOSSANA CITY(Hawassa Unversity, 2020-10-18) DAWIT DAMISSIE ERGICHOTraffic intersections are complex locations on highways. This is because vehicles moving in different direction want to occupy same space at the same time. Traffic volume is one of the variables that have the biggest effect on intersection performances. The traffic volume of Menharya and Maryam signalized intersections, Bezabh Petros and Eyerusalem roundabouts at Hosanna city is highly occupied by three wheelers. So it is vital to study the effects of three wheelers on performance measurement parameters of intersections. The other purposes of the study were, analysis of existing intersection performances, evaluation of the consequences of three wheelers with performance parameters and comparing the performance change of intersections by replacing three wheelers with a minibus. All data were collected by using video camera for traffic data and measuring tape for geometric data. By taking peak hour volume, the performance measurement parameters of intersections were done using HCM 2010 methodologies incorporated in SIDRA Intersection Software 5.1. The effects of three wheelers on intersection performances were evaluated by excluding three wheelers from analysis and by comparing each performance parameter changes with and without three wheelers. By replacing three wheelers with minibus of 12 seats, the performance changes of intersections were evaluated and compared well. From the result of the study, Menharya signalized intersection is operating above its capacity because, the degree of saturation of this intersection is 1.374 which is greater than one and Maryam signalized intersection also shows congested condition with degree of saturation 0.852. 70.5% cause for delay, 85.5% cause for a degree of saturation, and 93.8% cause for the queue distance of Menharya signalized intersection is the presence of three wheelers. In the same manner for Maryam signalized intersection, 17.1% cause of delay. 82.2% cause of degree of saturation, and 90.7% cause of queue length is three wheeler's presence. The performances of both roundabouts are also affected highly due to presence of three wheelers. For Menharya signalized intersection, 54.1% Average delay, 31.7% degree of saturation and 59.5% queue distance, For Maryam signalized intersection, 19.3% Average delay, 32.4% degree of saturation and 45.6% queue distance is improved when Three wheelers replaced by minibus.Item ANALYSIS OF THE EFFECTS OF THREE WHEELERS ON PERFORMANCE MEASUREMENT PARAMETERS OF INTERSECTIONS: A CASE STUDY: ROUNDABOUTS AND SIGNALIZED INTERSECTIONS IN HOSSANA CITY(Hawassa Inversity, 2020-07-17) DAWIT DAMISSIE ERGICHOABSTRACT Traffic intersections are complex locations on highways. This is because vehicles moving in different direction want to occupy same space at the same time. Traffic volume is one of the variables that have the biggest effect on intersection performances. The traffic volume of Menharya and Maryam signalized intersections, Bezabh Petros and Eyerusalem roundabouts at Hosanna city is highly occupied by three wheelers. So it is vital to study the effects of three wheelers on performance measurement parameters of intersections. The other purposes of the study were, analysis of existing intersection performances, evaluation of the consequences of three wheelers with performance parameters and comparing the performance change of intersections by replacing three wheelers with a minibus. All data were collected by using video camera for traffic data and measuring tape for geometric data. By taking peak hour volume, the performance measurement parameters of intersections were done using HCM 2010 methodologies incorporated in SIDRA Intersection Software 5.1. The effects of three wheelers on intersection performances were evaluated by excluding three wheelers from analysis and by comparing each performance parameter changes with and without three wheelers. By replacing three wheelers with minibus of 12 seats, the performance changes of intersections were evaluated and compared well. From the result of the study, Menharya signalized intersection is operating above its capacity because, the degree of saturation of this intersection is 1.374 which is greater than one and Maryam signalized intersection also shows congested condition with degree of saturation 0.852. 70.5% cause for delay, 85.5% cause for a degree of saturation, and 93.8% cause for the queue distance of Menharya signalized intersection is the presence of three wheelers. In the same manner for Maryam signalized intersection, 17.1% cause of delay. 82.2% cause of degree of saturation, and 90.7% cause of queue length is three wheeler's presence. The performances of both roundabouts are also affected highly due to presence of three wheelers. For Menharya signalized intersection, 54.1% Average delay, 31.7% degree of saturation and 59.5% queue distance, For Maryam signalized intersection, 19.3% Average delay, 32.4% degree of saturation and 45.6% queue distance is improved when Three wheelers replaced by minibuItem EVALUATING THE TRAFFIC OPERATIONAL PERFORMANCE IN ADDIS ABABA: A CASE OF MEGENAGNA TO AYAT ROAD CORRIDOR(Hawassa University, 2021-10-17) BETHLEHEM TILAHUN GEBREPoor traffic performance is a major problem in many countries affecting urban traffic sustainable development at present. It has a significant effect on social, economic, and environmental. Due to economic development and urbanization, transport in Addis Ababa has faced traffic congestion problems. This paper presents a study on the evaluation of operational performance of traffic in Addis Ababa in the case of the Megenagna to Ayat road network by addressing the factors that cause traffic congestions. LOS, average delay, and degree of saturation were quantified for three roundabouts using SIDRA software to analyze the traffic conditions in the study area. And Levels of service for three road segments were quantified using HCM 2010. A multiple regression analysis using SPSS was applied to quantify the factors that cause congestion on the performance of the road network based on questionnaire and field data. From the analysis, average speed of Ayat to Yetebaberute, Yetebaberute to Sahilitmiheret, Sahilitmiheret to Megenagna road segments were 11.6km/hr, 6.3km/hr & 5.45km/hr respectively and it was 30.08%, 26.14% & 22.59% of the free flow speed respectively. The LOS of these three road segments was F, and the traveler perception score was greater than 5, indicating drivers perceived the worst service. And for the three roundabouts i.e., Sahilitmiheret, Yetebaberute, and Ayat roundabouts, the overall LOS was F, so the degree of saturation is greater than 1 with the overall average delay of 405.20sec, 211sec and 310.2sec, respectively. The results from SIDRA software indicated that the roundabouts are providing traffic service above their capacity during the peak hour. From the SPSS result of the mean-variance results are significant at 0.05(p-0.05), which means that the factors caused traffic congestion in the study area. The regression model developed with R2 of 0.985, which is greater than 0.7, which shows the model was reliable. Based on the result of the study, the roundabouts were over congested; their operational characteristics were unsatisfactory, serving beyond their capacity & at a poor level of service. And the roundabouts contribute significant effect for the performance of the segments. The performance of the road network was poor and cause significant delay for the user. The factors that contribute for the poor traffic performance in the study area were significant to cause congestion.Item ASSESSING CRITICAL FACTORS AFFECTING THE PERFORMANCE OF ROAD CONSTRUCTION PROJECTS (A CASE OF ROAD PROJECTS IN SIDAMA ROADS AUTHORITY)(Hawassa University, 2025-07-14) ERDACHEW EYOB SIMEThe Construction Industry is one of the very fast-growing industries but it also faces many problems which impinge on the performance of their projects. For this reason, it is necessary to plan these projects properly to guarantee their success. The study was conducted with the objective of identifying critical factors affecting the performance of road construction projects in Sidama Roads Authority, developing a framework to improve the performance of road construction projects in SRA and giving suggestion and recommendation to mend the performance of road construction projects in SRA. The study adopted a descriptive research design. Mixed research approach was also employed in this study. A relevant literature was reviewed and self-administered questionnaire which contain A total of 54 performance factors with seven factor groups categorization. It was designed to collect relevant information from purposively selected 120 respondents of SRA (Bensa Daayye road district). Study population was pre-selected twenty (20) road construction projects which found in six road clusters of Bensa Daayye road districts. Additionally; Data were gathered through Focus discussion group. collected data was coded and entered into statistical packages for Social Scientists SPSS Version (27) and analyzed using descriptive statistics such as percentage, frequency and relative importance index (RII) was used to rank the identified factors. The findings were presented in form of tables while explanation was presented in prose and the findings revealed seventeen most significant factors that significantly affects the performance of road construction projects in selected twenty road construction projects in SRA those factors. Those factors were the main causes for the delay and cost overrun. Thus, the output of this research will contribute to identify and understand the critical factors affecting the performance of road construction projects in SRA, by providing fully enough information to identify the areas where necessary action needs to be taken and by furtherly providing respective suggestion, recommendation and subjective framework to improve performance of road construction projects. In addition, it is recommended to Moreover, in addition to the studied critical factors, further in-depth investigation is recommended on many unaddressed critical factorsItem ASSESING PERFORMANCE EVALUATION PRACTICE OF BUILDING CONSTRUCTION PROJECT IN HAWASSA CITY(Hawassa University, 2021-03-18) BIRUK KEBEDE BEKELEProject performance has been considered to be tied to project success and this is also tied to project objectives. Based on this to evaluate performance effectively and efficiently we should develop an objective and consistent measurable criteria. These criteria are called performance dimensions. According to many study performance dimension has been encounter performance shortfall in construction industry worldwide and in developing country at large. Especially in Ethiopia and the city Hawassa the problem is clearly shows. The research aimed at assessing the performance evaluation practice on four Dimensions namely Time, Cost, Quality and health and safety and its challenges and also develops a framework to efficiently practice performance evaluation in construction project in Hawassa city. The study adopts both quantitative and qualitative approach to assess the performance evaluation practice in Hawassa city. Simple random samplings were used to select the representative sample form entire population. Quantitative approach used questionnaire while qualitative approach uses semi-structure interview and case study to stimulate the relevant response from the major stakeholders in the Hawassa building construction project. The data collected by questionnaire were analyzed using frequency and mean for objective one and one sample t-test for objective two. In doing so The study concludes most contractors has limited budget set for evaluation purpose, most contractor evaluate their project in every phase of project. And most contractor use “time variation” formula to measure time, percent net variation over final cost formula to measure cost, system quality method to measure quality, fatality rate to measure safety. The study found that, limited financial resource, poor quality of data collected, poor communication, lack of monitoring and evaluation plans in planning, and budgeting, weak legal and institutional framework and Poor demand for monitoring and evaluation. Lack of monitoring and evaluation units within the organization and Weak linkage between planning and evaluation are the most challenges in Hawassa construction project. And all projects never use the most common framework like Balance score card, European foundation for quality management, Key Performance Indicator and Earned Value Management. Finally the research recommends that contractors in Hawassa should allocate budget, use reliable framework and organize independent unit for performance evaluation. The study develops performance evaluation framework helps to project success and uses as benchmark for other study in Hawassa cit