DTCTP with renewable and nonrenewable resources

The traditional DTCTP is improved to a new multi-mode resource-constrained DTCTP model (MRC-DTCTP). Referring to the multi-mode resource-constrained project scheduling problem (MRCPSP), both the renewable resources and nonrenewable resources constraints are added to DTCTP. By predefining the resource price, the renewable resources are related to the project costs, including direct cost and indirect cost. Every activity can be executed in the crashing way in which the project direct costs are used to shorten the activity duration. According to the characteristics of the MRC-DTCTP, a brand and bound algorithm for solving it is developed. Finally an entire time-cost tradeoff curve for a project network is drawn, and it is shown that MRC-DTCTP can effectively help to balance the relationship between project duration and cost.