Every planner regularly encounters negative total float in schedules where he didn’t expect it. This happens more often than one would like. And every time this is the start of a nerve-wracking search for the cause. In this post we list the most probable causes to give you guidance on where to start looking.Read more
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.Read more
As a follow-up to my last post about the difference between a time buffer and total float; here is a new post in the same series – seemingly easy concepts that seem to confuse many. This one might be an open door for financial or general management profiles, but it is not for most project controls engineers.Read more
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.Read more
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.Read more
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.Read more
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).Read more
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.Read more
You are halfway through your project and you want to know if you are still going to achieve your project objectives. By using an Earned Value Management System, you know how to estimate your total expected costs (Estimate at Completion), but what about your deadline? Based on your current information, can you say something about the expected finish date of your project? This blog gives you an overview of how to use Earned Schedule to predict your project finish date.