All projects utilise several different resources to successfully complete the project successfully to the customer or sponsors requirements. Resources add another dimension to planning and scheduling. This includes people, materials, equipment, tool, facilities and so forth. The quantity and avallability of these resources are often limited and cause project to face risks or constraints which needs to be managed carefully. With the above statements in mind, differentiate between Resource smoothing and resource limited scheduling then to substantiate your answer by providing at least two (2) situations where resource limited scheduling may occur