| Title |
Project Progress Management by Extended Schedule Performance Index |
| Authors |
Yang Chang-Hyun ; Kim Kyung-Hwan ; Shin Seung-Ha ; Ryu Je-Seung |
| Keywords |
Schedule Performance Index ; Progress Management ; Scheduling |
| Abstract |
In construction projects, it is necessary important to evaluate the performance of works in comparison with the cost and schedule plans. EVMS(Earned Value Management System) has been used as a project control tool. Among various Performance Index in EVMS, however, SPI(Schedule Performance Index) which is measured by BCWS(Budgeted Cost for Work Scheduled) and BCWP(Budgeted Cost for Work Preformed) can cause a misestimation of the project progres. For example, even though there is a project delay causing the extension of project duration, SPI with normal or more progressed status can be measured by other activities. This shows the limitation of EVMS whose baseline is budget cost. This study propose Extended-SPI which is an improved and extendable concept that overcoms the problems of the traditional SPI. This new concept considers critical path and percentage of allowance that represent the schedule observance in order to reflect the project progress. In this way, Extended-SPI provides more effective and meaningful index in applying EVMS. |