Abstract: Implementation of schedule have four steps:control， control， adjustment， coordinate ，the 1st According to the contract requirements， to determine the relationship between time and lap ongoing construction projects the total duration of a record of each unit works and part of the project， the preparation of the schedule reasonable and the 2nd In the course of project construction， controlled by linear diagram (Gantt chart， S-curve diagram) control method and network diagrams and plans to compare actual Take timely corrective measures when deviations found progress deviation as per schedule to ensure completion of the the 3rd When the actual progress of the currency ahead of schedule， or the original plan is wrong and realize conditions are not met， the need for timely adjustment the 4th， In the course of project construction， and coordinate the various units involved in the relationship between progress in order to ensure the smooth realization of the overall schedule
