We start with an introduction to estimating or calculating the durations of the schedule’s activities. We discuss the work production rate and its relationship to both unit price and activity duration. We briefly cover factors that influence crew productivity such as weather, design complexity, and labor skill level. We give a few examples of adjusting productivity based on project conditions. We then show the impact of duration adjustment on the schedule and project completion date. We conclude with general tips and recommendations.Areas CoveredIntroduction to the calculation of activity durations for a CPM schedule Analysis of crew productivity and the relationship with item unit price and activity duration Factors that influence crew productivity such as weather, design complexity, and labor skill levelHow to apply adjustment factors to crew production rate and activity duration? Numerical exampleConsequences of inaccurate durations and general tipsWho Should AttendThis seminar is important for planners, schedulers, cost estimators, project controls engineers and managers, and the entire project management team.Why Should You Attend This seminar covers issues related to CPM schedules and cost estimates. It deals also with rates of work production, as there are many factors that influence productivity, hence affecting both the cost and duration of work. The information is important for estimating the time and money aspects of the project. It impacts the accuracy and integrity of the schedule.Topic BackgroundThis is an intermediate-level seminar on the subject of project scheduling. It deals with estimating or calculating the durations of activities in a CPM schedule. This subject relates to both scheduling and cost estimating but the focus is on scheduling. The seminar requires basic knowledge in the Critical Path Method, CPM.