Construction Technology and Management

Permanent URI for this collection

http://etd.aau.edu.et/handle/12345678/134

Browse

Browsing Construction Technology and Management by Subject "Accuracy"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Evaluation of The Cost Estimating System of Building Contractors in Addis Ababa
    (Addis Ababa University, 2015-11) Andom, Danait; Senbetta, Ephraim (PhD)
    In Ethiopia, construction has been booming in the last ten years due to the growth and transformation plan linked with the Millennium Development Goal (MDG) adopted by the Government of Ethiopia (GOE). However, achieving this goal as its plan remains a challenge. Out of the many inter–related problems, difficulties and shortcomings of the construction sector, the contracting companies’ performance in completing the projects within the contractual time, quality and cost is one of the major issues in developing the sector to the highest level. Hence, improving the efficiency and effectiveness of local contractors with regard to cost estimating system is very vital since efficient and effective estimating and bidding process is a key to successful construction and to build sustainable development to the sector. The objective of this research is to evaluate cost estimating practice of local building contractors, identify shortcomings, deficiencies and limitations of the cost estimating system used by local contractors, explore factors that influence the accuracy of estimating the building project cost in Addis Ababa and suggest some ways to improve the existing practice in order to minimize the delay in time and maintaining the desired quality of the construction work. A survey questionnaire is used to explore the local practice in cost estimating. Basically, the shortage of qualified personnel and lack of available guidelines or established standards on cost estimating systems are considered the main obstacles for successful cost estimating. One of the main recommendations of this research is to encourage local contracting companies to have better awareness and attitude to use proper cost estimating systems in more modernized (computerized) ways to become more successful not only in winning the bids with the desired profit but also completing the work within the estimated time and the required quality. Key Words: Cost, Cost estimates, accuracy, building projects, local contractors.
  • No Thumbnail Available
    Item
    Study on Price Estimating Method in Selected Ethiopian Road Administration Construction Projects
    (Addis Ababa Univesrity, 2024-05) Gediyon Addis; Abebe Dinku (Prof.)
    Road construction is a major sector for national income growth and generates employment within a country. Accurate road construction project price estimation solves the project finance problem for country by providing efficient resource allocation. Hence, identification and analysis of price estimation accuracy is important for successful project completion. Accordingly, this research attempts to identify the major shortcoming and limitation during price estimation, factors leading to price estimation inaccuracy road construction sector, computer price estimation software used for price estimation; which can serve as the way to provide structured approach for price estimation stakeholder. Literature review and desk study were done to investigate price estimation method in road construction projects. The questionnaire survey was conducted with stakeholders from contractors, client and consultants. The questionnaire include total of fourteen major factor affecting price estimation process. In addition, other questions which enable to achieve the objectives of the research were developed. The result of the desk study indicated that out of ten investigated road construction projects eight projects encounter price variance. All projects have encountered project delay. There is lack of database technique and advanced price estimating method like ANN and 74% of respondent indicates existence of price estimation inaccuracy. The survey result of respondent indicates project size, project location, market condition and external event are major factor affecting price estimation accuracy. In order to improve price estimation accuracy data availability and documentation should be improved; identify each factor affecting price estimation accuracy and document it; implement advanced computer price estimating software. In addition, use specialized group for each road work and finally check estimate with independent estimator.