Civil Engineering
Permanent URI for this collectionhttps://etd.hu.edu.et/handle/123456789/675
Browse
2 results
Search Results
Item ASSESSMENT OF BUILDINGS MAINTENANCE MANAGEMENT PRACTICES: (A CASE OF SELECTED TOWNS IN SOUTHERN NATIONS, NATIONALITIES, AND PEOPLE’S REGIONAL STATE)(Hawassa Inversity, 2019-10-29) YACOB BADENGA MINUTABuilding defect is a failing or shortcoming in the function, performance, statutory or user requirements of a fabric, facilities in a building. Maintenance is an important program for the sustainability of buildings under occupancy. (The present buildings) Observed buildings in this study in SNNPRS were manifesting deterioration that should have been maintained long ago. In the region, defects in public buildings appeared and their impacts had been of high maintenance costs. Material and construction deficiency observed as the main causes of building defect under occupancy stage of buildings (Bedru M. , 2015). This research assessed the defects and maintenance management practices in the occupancy stage of public buildings in selected towns of SNNPRS. At the end, effects of defects and defect reducing measures were investigated. Interview survey, case study and desk study were used and analyzed by SPSS for research work. Thirteen buildings were considered during the interview, case studies and desk study. Building administrators, facility managers and other concerned body were considered in the selected buildings in the region for the interview questions. From the result, the main types of defects were identified; economic, functional and social consequences of defects were investigated; the practices of maintenance management in public buildings were assessed and defect reducing measures were finally recommended for buildings. The frequent types of defects identified in the study were; dampness; peeling of paint; leakage and defects in building service installation. Similarly the average results showed that the most common causes of building defect were construction and material deficiency with corresponding shares of 41.95 % and 37.55 % of the defects respectively. High amount of maintenance cost was consumed in a building in the desk study analysis in one time maintenance for a building defect. This implies there was no preventive mechanisms set for buildings. Before beginning of the actual maintenance work, maintenance directory (report) should be prepared for all defective items in team in order to know the severity of defects which enables to prepare maintenance BoQ for execution. Periodic maintenance shall be recommended for public buildings under occupancyItem PRIORITIZATION AND ASSIGNMENT OF OPTIMAL MAINTENANCE STRATEGY OF PAVED ROAD SEGMENTS BY USING HDM-4 TOOL (A CASE STUDY IN SODO DISTRICT OF THE ETHIOPIAN ROADS AUTHORITY(Hawassa University, 2020-08-17) TSEGAWU WORKU KERCHOEfficient Pavement management maintenance system are backbone for an optimal maintenance strategies. Currently, 36% of the road segments under Sodo road network maintenance district (RNMD) are also in poor condition of performance. The poor state of the road network is caused mainly because of not applying timely and optimal maintenance. In addition to this, in countries like Ethiopia, a yearly limited budget is insufficient to maintain all deteriorated roads in the country.To counteract this problems, this study was aimed at setting prioritization and assignment of optimal maintenance strategy for 10 paved road segments of 690Km under Sodo RNMD by using highway development and management tool (HDM-4). To meet this objective pertinent data were collected from Sodo RNMD and many offices. Then, the collected data under different input type were entered manually into the HDM-4 software to make it ready for economic analysis. Four types of maintenance alternatives with different types of maintenance standards and intervention levels were used in this study for comparison of alternatives. After HDM-4 project analyses were carried, among the alternatives, an alternative with a higher value of net present value per cost (NPV/C) was considered as an optimal maintenance alternative for each road segment. Among the maintenance alternatives alternative two (Routine + SBST + 50mm asphalt concrete overlay) has generated a higher value of NPV/c than other alternatives and were considered as an optimal maintenance alternative for 5 road segments. Finally, the prioritization of segments for annual maintenance according to profitability was done by comparing the internal rate of return (IRR) values of each segment with an optimal alternative. In this regard, the Alaba to Sodo road segment was found to be a project with the highest value of IRR= 393.6% and should be prioritized first for maintenance. The remaining segments were prioritized likewise based on their respective IRR values. So It was found that using HDM–4 analysis in the process of establishing road maintenance strategies will reduce lifetime cost and increase benefits and profitability