Problem When attempting to change theĀ Remaining DurationĀ of an activity, the value reverts to its original state. Change the Remaining Duration value of an activity Causes & Solutions 1. Expected Finish Constraint If the activity has an Expected Finish constraint, the Remaining Duration is automatically calculated as the time between the Data Date and the Expected Finish date. This prevents manual updates... Continue Reading →
1. Purpose of Constraints in Primavera P6 Date restrictions used to reflect project requirements that cannot be built into the network logic.More accurately reflect real-world aspects of a project.Provide added control of a project.Apply to the entire project or to individual activities.Commonly used project-level constraint: Must Finish ByCommonly used activity-level constraint: Start On or AfterNo... Continue Reading →
The Driving Relationship is determined based on the Relationship Free Float and the business rules for Driving Relationships. Relationship Free Float Relationship Free Float (Rel FF): The Free Float on the relationship. Calculated as Successor Early Start (assuming a Finish to Start relationship) - Relationship Early Finish on the predecessors' calendar. This field is computed... Continue Reading →
In Primavera P6, when we use "longest path" option to determine the critical path, the process to determine the longest path is as follows: The longest path activities are determined by reviewing the schedule backwards (starting from the last activity) through the driving relationships; If the relationship between two activities is driving, then both activities... Continue Reading →
In the schedule update of Primavera P6, there are occasionally gaps (empty spaces) between the actual bars and the remaining bars as illustrated in picture below. The reasons and solutions for the issue are described in this article. Reason 1: Primavera P6 schedules and displays the activities on Gantt chart in a very detailed and... Continue Reading →
In Primavera P6 Schedule Options, there are 2 options for "Calculate start-to-start lag from". The purpose of these option is described below. We have a simple project: Activity A has FS relationship with Activity B Activity B has SS relationship with Activity C with a lag value of 2 days. The schedule option in this... Continue Reading →
When scheduling a project in Primavera P6, you might notice that theĀ Original DurationĀ of an activity changes unexpectedly. This often happens when theĀ Expected Finish DateĀ is being used. What Is the Expected Finish Date? TheĀ Expected Finish Date acts like a constraint in Primavera P6ābut only ifĀ the scheduling optionĀ āUse Expected Finish DatesāĀ is enabled in your project settings. This... Continue Reading →
When assigning a resource to an activity in Primavera P6, the following equation always holds true: Original Duration Ć Units/Time = Total Units For example:10 days Ć 8 hours/day = 80 hours This equation is fundamental and must always remain valid, regardless of changes made to the activity. When you modify the duration of an... Continue Reading →
In Primavera P6, there are two commonly used activity types: Task Dependent and Resource Dependent. The key difference between them lies in how the software determines the calendar used to calculate the activityās finish date. Task Dependent: P6 uses theĀ Activity CalendarĀ to calculate the finish date. Resource Dependent: P6 uses theĀ Resource CalendarĀ to calculate the finish date. This choice directly impacts... Continue Reading →
In Primavera P6, there are two key scheduling concepts: Total Float and Free Float. While they may seem similar, they serve different purposes. Total Float:The amount of time an activity can be delayedĀ without delaying the projectās finish date. Free Float:The amount of time an activity can be delayedĀ without delaying the start of its immediate successor.... Continue Reading →
After three months of hard work, we completed a schedule using a 5-day workweek calendar, as shown in the image below. Then came the twist. The construction team said: ā6 March 2018, is the correct project finish dateābut weāre using a 7-day workweek, not a 5-day one. Sorry, mustāve been a misunderstanding.ā Wait, what? Changing... Continue Reading →
When working with layouts inĀ Primavera P6, it's important to understand how the software calculates and displaysĀ summary informationĀ for various data types such as costs, quantities, dates, durations, float, progress, and user-defined fields (UDFs). This article explains how these summaries are derived and what factors influence them. All summary calculations in P6 are based on theĀ currently visible... Continue Reading →
Let’s celebrate by buying Khuong Do a cup of coffee :-)
Khuong Do Blog 
You must be logged in to post a comment.