Construction project planning using integration of crashing and concurrency techniques

Construction Project planning process is considered an essential area in the field of organization and implementation of projects, particularly those needing coordination, great effort and long implementation time. Moreover, project managers are focusing on achieving predetermined objectives. This paper aims to attain certain objectives; cost, time, and number of labourers, in a way that reaches the best satisfied results depending on the importance of each objective. A multi-objective model construction based on project planning in two techniques; crashing technique and concurrency is presented, additionally a new proposed mixed technique titled as Concurrency Partitioning with Crashing Techniques (CPCT). The proposed model is implemented on a Substation of Electrical Power for Transformation plant as a case for studying. The suggested mixed approach (CPCT) provides more desirable results with the multi-objective problem, where both project time and cost are decreased by 19.5% and 2.6%, respectively, while the total number of labourers is increased by 8.8%