first,he must have a considerable background of practical construction experience so that he is thoroughly familiar with the workings and intricacies' of the construction idustry.Second, the project manager must have ,or have available to him, persons with expertise and experiences in the application of specialized management techniques to the planning,scheduling, and control of construction operations.Third,the project manager must have the trying and insight that will enable him to work well with other people, often under very strined and trying circumstances.