Integrating CAD and schedule for identification and resolution of work space conflicts between subcontractors

Numerous workers, equipment, material, temporary facilities, and permanent structures share the limited space during construction. Since space constra ints may affect productivity and the critical path, it is essential to orga nize the available space efficiently and minimize space conflicts. This stu dy considers space availability due to time and scheduling, productivity lo ss due to space constraints and path interference, as well as the possibili ty of alternative space to resolve these conflicts and optimize space usage . Herein CAD is integrated with scheduling software for dynamic identificat ion of space conflicts on the job site. Follow-up supplemental decision cri teria are then provided for conflict analysis and resolution. A prototype d ecision support system, which combines the criteria, was developed to solve this significant and complex problem more efficiently and precisely. A cas e study demonstrates the use and development of this system, which is very helpful to engineers and project management.