SHOULD THE TREND FROM TRADITIONAL DESIGN/BID/BUILD PROJECT TO MORE NEGOTIATED AND/OR DESIGN/BUILD PROJECTS AFFECT CONSTRUCTION PROJECT PLANNING AND CONTROL SYSTEMS?

摘要

In today's modern construction environment, the trend from traditional design/bid/build (DBB) projects to more negotiated and/or design/build (DB) projects has resulted in construction companies being asked to provide more accurate construction cost estimates earlier in the design phase and prior to designs being completed. Frequently, owners and designers expect that construction firms provide them with construction cost estimates alternates for design alternatives and value engineering purposes so that design can proceed. Using historical construction cost data is one method that has been used to accomplish this, but considering the amount of variations that can occur from project to project makes this process difficult and only provides indicators of future cost on similar tasks. Furthermore, construction cost estimates for conceptual design inherently have a wide range of accuracy because they are need to be based on assumptions and varying levels of information. Involving construction companies earlier in the design process has led to the need to develop a more sophisticated method to track and record construction cost. This paper discusses a methodology for implementing an organized construction cost tracking and recording system that enables individual construction work activities so that can be used to project future construction cost.