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Primavera P6 duration issues – Hours per time period explained

Primavera is a wonderful tool but sometimes it’s calculations give weird results. For instance when filling in durations of an activity, you might’ve encountered a problem similar to the ones below:

  • Your activity duration is showing as 5 days but it starts on the 1st and already ends the 4th
  • Your units/time is showing 8h/d but Primavera is actually calculating with 12h/d

What is going on? Well it’s probably something to do with your hours per Time period settings.

Matthias van Campenby Matthias van Campen

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The To Complete Performance Index (TCPI)

How can we get the most out of our EVM metrics? We’ve evaluated our current cost and schedule performance, and have seen how to forecast the Estimate At Completion (EAC). Now is the time to evaluate the realism of our project’s Budget At Completion (BAC). Following the current conditions, is the aimed for budget still sufficient?

One of the most powerful (and underutilized) measures EVM grants us is the To Complete Performance Index. This is the Cost Performance Index (CPI) at which you must execute the remainder of the work to deliver the project within a certain budget. The budget aimed for has sometimes become idealistic. Comparing the TCPI with the current CPI gives a good insight on whether the foreseen budget or the EAC remain realistic. The difference between the cumulative CPI and the TCPI value should trigger the re-evaluation of the Estimate At Completion.

Niels Ligtvoetby Niels Ligtvoet

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Calendars and total Float in Primavera P6

Calendars can have an impact on the total float activities, and thus on the critical path. This might seem somewhat confusing when first encountered, but once you understand how Primavera deals with this, it makes more sense.

An important consequence of this is the potential difference between the critical path and the longest path Primavera P6 can calculate. Standard settings in Primavera P6 will show all activities with zero total float as critical, but the longest path can consist out of activities with different amounts of total float. Find out how calendars are related to this and continue reading.

Gert Truyensby Gert Truyens

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Scheduling progressed activities

In this blog post, we’re going to dig deeper into a question you will face when preparing or reviewing a schedule update. How do you address “out-of-sequence” progress in Primavera P6?
The user has 3 interesting choices in the schedule options on how the software deals with progressed activities that are out of sequence, these choices are:

  • Retained logic
  • Progress override
  • Actual dates

This blog post will  address these 3 options, which will help you better represent reality in your progress updates.

Matthijs Warnezby Matthijs Warnez

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Two + two types of Float

When using the Critical Path Method (CPM) in traditional project management software, Total Float (TF) and Free Float (FF) are calculated, which most project managers know and use. But there is more to it. We can gain deeper insight in which timeframe an activity can shift, and the effects on the related activities by calling in two more types of float. The Interfering Float (INTF) and the Independent Float (INDF). Let me tell you how to interpret them, help decision making, and support claim prevention/preparation by using these four characteristics.

Niels Ligtvoetby Niels Ligtvoet

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Primavera P6 and the Longest Path

There is more to showing THE Critical Path in Primavera than your project manager can imagine. Primavera allows you to change certain settings to define the criticality of activities: you can define a threshold value for total float, or choose for the longest path instead of a total float-based critical path.

It is likely that you are interested in all activities that drive a certain milestone. And it makes much more sense to monitor the longest path towards this milestone instead of the critical path defined by total float. This very useful option is however a little bit hidden in Primavera P6 and I desperately want to share it with you! It is a method I use on EVERY SINGLE PROJECT.

Gert Truyensby Gert Truyens

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Project Calendars over Global Calendars

Primavera P6 is designed as an Enterprise Project Portfolio Management (EPPM) tool. Even though often used as a standalone tool, Primavera P6 is a database initially designed for the enterprise’s needs where data can be shared between projects. In order to achieve this Primavera P6 uses the concept of “Global” data objects and “Project” (or embedded) data objects.

In this blog I will show you why using a project calendar over a global calendar for your project activities schedule is beneficial to maintain control over your project(s).

Matthijs Warnezby Matthijs Warnez

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Six reasons to bring Primavera P6 to the cloud

Primavera P6 has established itself as the leading software for project scheduling & control and especially for complex projects in engineering & construction. However, not every P6 implementation is the same. Four different implementation types can be distinguished with differences in architecture and functionality. In this blog post we will focus on the advantages of the most recent one, P6 EPPM Cloud Services.

Stijn Van de Vonderby Stijn Van de Vonder

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