Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
TIME - COST RELATIONSHIPS MODEL IN ROAD CONSTRUCTION (A CASE STUDY OF ETHIOPIAN ROAD AUTHORITY
Time and cost are two important things in the implementation of construction projects. The greater the volume of the work will increase the period of implementation so that the higher the cost. Time and transaction costs provides challenges, and in the same time also opportunities for the construction planners to prepare the best construction plan with the optimal time and cost in order to complete the projects implementation. This research aims to obtain the time-cost relationship model of road constructions in a case study of Ethiopian road authority by using the hypothesized empirical and graphical models developed for the concept. Based on the empirical Bromilow"s model, of Ethiopian road construction project has been modeled by time–cost formula expressed in the form of T=KCB, where T is the actual construction time in calendar days, C is the final cost of contract in Ethiopian birr, K is a constant characteristics of time performance, and B is a constant indicative of the sensitivity of time performance to cost level. To test the analysis coefficient of determination (R2) and level of significance (p) are used. The data survey was obtained from thirty road projects in Ethiopian road authority. Analysis using linear regression technique was performed between project duration (i.e., time), and project cost. The result indicates Construction Industry at the level of significance (p-value) of <0.05, and can be formulated in the form of TIME= 0.0812*COST0.57. From this analysis result we predict expected construction time for ongoing road projects by using the contract cost in the analysis formula.
TIME - COST RELATIONSHIPS MODEL IN ROAD CONSTRUCTION (A CASE STUDY OF ETHIOPIAN ROAD AUTHORITY
Time and cost are two important things in the implementation of construction projects. The greater the volume of the work will increase the period of implementation so that the higher the cost. Time and transaction costs provides challenges, and in the same time also opportunities for the construction planners to prepare the best construction plan with the optimal time and cost in order to complete the projects implementation. This research aims to obtain the time-cost relationship model of road constructions in a case study of Ethiopian road authority by using the hypothesized empirical and graphical models developed for the concept. Based on the empirical Bromilow"s model, of Ethiopian road construction project has been modeled by time–cost formula expressed in the form of T=KCB, where T is the actual construction time in calendar days, C is the final cost of contract in Ethiopian birr, K is a constant characteristics of time performance, and B is a constant indicative of the sensitivity of time performance to cost level. To test the analysis coefficient of determination (R2) and level of significance (p) are used. The data survey was obtained from thirty road projects in Ethiopian road authority. Analysis using linear regression technique was performed between project duration (i.e., time), and project cost. The result indicates Construction Industry at the level of significance (p-value) of <0.05, and can be formulated in the form of TIME= 0.0812*COST0.57. From this analysis result we predict expected construction time for ongoing road projects by using the contract cost in the analysis formula.
TIME - COST RELATIONSHIPS MODEL IN ROAD CONSTRUCTION (A CASE STUDY OF ETHIOPIAN ROAD AUTHORITY
LILI MENBERE (Autor:in)
16.09.2019
doi:10.20372/nadre/4040
Hochschulschrift
Elektronische Ressource
Englisch
contracted time , contracted price , actual , Bromilow , regression analysis , models , linear , cost , estimate , road construction
Cost Overruns on Federal Capital Territory Authority Road Construction Projects
| BASE | 2019
Risks affecting the performance of Ethiopian domestic road construction contractors
| Taylor & Francis Verlag | 2023
| Engineering Index Backfile | 1936
Preflood Road Maintenance Strategy for a Road Authority
| ASCE | 2016