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Feb

Are You a Pigeon?

Categories: Activity Steps, Critical Path, P6 EPPM, P6 Professional, P6 Tricks, P6 Web, Primavera Contractor

Tags: Activity Steps, Critical Path, Primavera P6, Retained Logic

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by Bill Pepoon

Pigeons mystified Charles Darwin. He mentions them in the very first chapter of On the Origin of Species:

“The diversity of breeds of pigeons is truly astonishing. If one compares the English Messenger with the short-faced Culbutant, one is struck by the enormous difference of their beak, resulting in corresponding differences in the skull.”

There are as many species of pigeons as there are of dogs or cats. But today we are focusing on carrier pigeons and their cousins, homing pigeons. And what a noble history! Noah was the first to recognize a pigeon’s ability to carry a message. The Romans used pigeons to transmit the results of chariot races. Genghis Kahn and Charlemagne relied upon pigeons to carry messages to troops, as did the French in the Vietnam War.

Even today, pigeons are used to carry blood samples in remote parts of England and France. Not surprisingly, pigeons have also been dragged into nefarious duties. Drug traffickers in Afghanistan and Pakistan have utilized flocks of pigeons to deliver heroin, each one carrying 10 grams.

But let’s be honest. If rats could fly we might have used them instead. Pigeons deliver a message – right or wrong – from one party to another. They don’t (can’t) read the message or vouch for its accuracy.

Don’t be a pigeon. Too many schedulers are simply delivering information that is incorrect or incomplete. They fail to consider whether the current critical path makes sense, ignore activities that clearly should have had progress by now, and fail to analyze the potential impact of unforeseen events.

Not all information can be easily verified, of course. Unless the scheduler is posted to the field he or she can not independently verify actual dates, installed quantities, percent completes and the like. Still, there are times when the reported progress makes little sense, like my client who said he had started plumbing fixtures on the third floor of the building at a time when the structural steel to the second floor was being erected (he was taking credit for plumbing fixtures that had been delivered to the jobsite, but we had a procurement activity for that scenario).

That story involving the plumbing fixtures happened more than 25 years ago. Schedulers have long memories! More recently, I have been reviewing schedules on a 34-story apartment tower in the midwest for the owner. Ironically, plumbing is once again the issue.

A couple of months ago, installation of water heaters on nearly every floor showed up on the critical path. And with one week scheduled for installation per floor, we had water heaters occupying about seven months of the remaining critical path.

I understood how the water heaters wound up on the critical path. The contractor had added activity relationships between water heaters on each floor – something we were calling “crew restraints” way back in the early 1980s.

Here is the funny part. When I filed my report with the owner, the contractor accused me of modifying his schedule update! He had no idea these crew restraints existed or why they had been added. The reality is that the crew restraints had always been in the schedule but due to better progress on other paths, this water heater path had now been exposed.

If you are wondering why water heaters were such a concern, the fact is that most of the interior work (drywall, painting, etc.) had similar crew restraints. But only the water heaters assumed one floor at a time. I have no idea why. It is clearly a very conservative assumption, and as many of you who read my blog on a regular basis already know, I prefer The Schedule That Can be Beat.

Nevertheless, this project is behind schedule and letting the water heaters control the project completion date is not acceptable. Yet this trend continued for another month. Finally, the contractor revised the logic so that water heaters overlapped on some floors. The critical path is now starting to make a lot more sense.

That’s just it. A good scheduler should know what belongs on the critical path. Even when I am still building the baseline schedule I have an idea of what will be critical. During the monthly updates I believe I know what should be critical as well if my logic is still valid and the contractor makes sufficient progress.

Submittals tend to be ignored by the contractor because so many of them have large float values. Whenever a submittal pops up on the critical path after I make a preliminary run of the monthly update I get very suspicious. Most of the time, the contractor’s memory improves dramatically when I tell him a submittal is on the critical path (“oh yeah, we submitted those shop drawings weeks ago!”).

Schedulers cannot afford to be gullible. People gives us bad data all the time and expect a good result. Not going to happen! The guy who told me he was 75 percent complete last month will report that he is 60 percent complete this month. Which number is the truth? The reality is that we tend to get better information on the most critical activities because everyone more or less understands what “critical” means (fingers crossed).

So how do we avoid becoming pigeons? Here are a few things to consider:

Never publish a schedule until the draft version has been reviewed by the project stakeholders. We do not want someone coming back and saying the logic is wrong, the durations are a fantasy, etc. after the schedule has been submitted to the owner.
Use Activity Steps on complex tasks to make it easier to report progress. I think Activity Steps are one of the best features in Primavera P6 ignored by most casual users.
“Gut check” the critical path. Even if the critical path seems acceptable to other project stakeholders, they are probably not scheduling experts and they certainly do not understand the details of the schedule nearly as well.
Always use Retained Logic as the scheduling method in Primavera P6 for activities with progress. Nothing keeps you, and everyone else, honest like being confronted with out-of-sequence work.
Avoid unnecessary logic changes. If the project is not going according to plan, why? If the owner is causing work to be performed out-of-sequence we need to preserve the logic to show the delay. But if the contractor has simply changed his mind, by all means modify the logic to keep it realistic.
Educate yourself. If scheduling is not something you really understand, you need training or guidance. I studied CPM in college, but I really did not know how to apply it correctly until I started working side-by-side with professional schedulers.

There you have it. Spread your wings and fly! Okay, so perhaps that is not really the best metaphor.

Dec

Primavera P6 Certification

Categories: Oracle Gold Partner, Oracle University, P6 EPPM, P6 Professional, Primavera Contractor, Primavera Training

Tags: Oracle Certified, Oracle University, Primavera Contractor, Primavera P6 EPPM, Primavera P6 Professional, Primavera Training

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by Bill Pepoon

A simple word – certification – can create so much confusion. Nearly every day we are asked about this word. How do I become certified on Primavera P6? Or how do I become a certified Primavera P6 scheduler or trainer?

Let’s start with the highest level of certification: Oracle University. Yes, there really is an Oracle University. In order to sell Oracle software a company must become an Oracle Partner (which involves a lot of paperwork and payment of fees) and get a certain number of employees certified on the Oracle programs the company wants to sell. Oracle offers Guided Learning Paths (GLPs) to help its partners prepare for these certifications.

In order to view the GLPs, however, you must have access to the Oracle Partner Network. In other words, individuals who do not work for an Oracle Partner cannot review the training materials. The GLPs cover a lot more than just the software itself, so it is vital to access to this training. Moreover, this trainer is geared towards implementing software solutions in various industries, which goes beyond what most schedulers would be expected to understand.

The next step is to take a proctored exam. By “proctored” we mean an exam observed by a third party. Oracle offers some exams during OpenWorld in San Francisco (an annual event for Oracle Partners, programmers and devotees) but there are computer learning centers around the country who offer the same exams on a more frequent basis. A passing score is 70%.

Passing this exam (1Z0-535) establishes someone as a Primavera P6 Enterprise Project Portfolio Management 8 Certified Implementation Specialist. If you are wondering, the “8” refers to Release 8 of P6 EPPM. Oracle has not changed the certification process even though we are now up to Release 17.7 as of July 2017.

You can view my certificate here.

Wait a minute! What about Primavera P6 Professional and Primavera Contractor? Well, Oracle does not offer separate certifications for those programs. But the reality is that P6 EPPM is by far the most difficult version of Primavera to learn and there are many features common to all three programs.

In addition, there is a desktop component of P6 EPPM that is identical to P6 Professional with one exception; the Admin menu is missing. Administrators are required to use the web component. But this also means that users who understand P6 Professional understand P6 EPPM to some extent, and vice versa. No one other than the administrators are required to use the web component and most schedulers prefer the desktop component.

I can promise you that just understanding Primavera P6 is not enough to pass this exam. There are questions related to the target markets for this software and how to implement various solutions. Companies who sell Oracle software are expected to be able to demonstrate why this software is the right solution. As you might imagine, P6 EPPM is the solution favored by Oracle.

In a nutshell, this is what it means to be “Oracle Certified”. Not all trainers are certified, and it should be rather obvious by now why firms that are not Oracle Partners are unlikely to have trainers who are certified by Oracle University. Being certified by Oracle University implies a pretty serious commitment to teaching Primavera P6. Oracle Partners also have access to resources unavailable to anyone else.

The next level of certification is by an Oracle Partner. While this may not sound as prestigious as being certified by Oracle University, the ultimate goal for non-trainers should be to learn the program, right? We are aware that job postings sometimes specify that applicants must be “certified” yet it is unlikely that the company posting the ad really understands the certification process.

Certification by an Oracle Partner will vary depending on the class. For example, our online classes are either 8 or 16 hours of instruction, while our in-person classes are 8, 16 or 24 hours. Each class has its own certification. We also offer certification via our On Demand Primavera P6 Training. When someone asks us which class to take, we try to understand what their job function requires. We offer a variety of classes to accommodate everyone’s needs.

The fact is that we have certified more than 2,500 people and not one of them has been turned down for a job because they lacked the correct certification. Each certificate we issue includes our Oracle Partner logo, and these companies know they can call us to discuss our curriculum. We want our students to succeed and we want companies to accept our imprimatur.

Perhaps more importantly, the employers we talk to overwhelming support training provided by an Oracle Partner. They appreciate that Oracle Partners are accredited by Oracle University and maintain a formal business relationship with Oracle. Moreover, only Oracle Partners can offer software sales and training. Oracle Partners are the most qualified to recommend the right solutions.

Some companies are looking for certified trainers to teach other employees – someone often referred to as the Subject Matter Expert (SME). These individuals most certainly need to be certified by at least an Oracle Partner given their additional responsibilities. After all, they are setting the standards for the entire organization. Oracle Partners work with companies in many industries and understand the proper procedures for each.

Several people who have taken our classes were initially trained by non-accredited instructors at companies not affiliated with Oracle and learned that their prospective employers would not accept their certifications. Those classes might have been cheaper, but in the long run these people end up paying a lot more to get the proper certification. And keep in mind that just because the instructor knows more about Primavera P6 than you do does not make them an expert.

Of course, real-world experience is important as well. Our company has prepared more than 600 initial schedules and more than 10,000 periodic updates. Each of our instructors has at least 25 years of experience in project management. We are in fact often asked to teach Primavera courses offered by other training firms because they recognize that our level of experience is unrivaled.

Yes, you read that correctly: some of our competitors are willing to pay us to teach their classes!

A couple of years ago a gentlemen contacted our firm and said he already knew Primavera P6 very well and therefore did not want to take a class. Instead, he wanted to buy a certificate from our firm! Needless to say, we declined. We have had our share of “experts” who did not understand the program all that well.

Any questions? Hopefully not, but let us know!

Oct

The Snowplow Effect

Categories: P6 EPPM, P6 Professional, P6 Tricks, Primavera Contractor, Schedule Performance Index

Tags: Primavera Contractor, Primavera P6 EPPM, Primavera P6 Professional, Schedule Performance Index, SPI

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by Bill Pepoon

During our training sessions in Kansas City this summer I was describing how Primavera users approach status updates differently than many Microsoft Project users. Primavera P6 users will change the Data Date when updating the project schedule to match the cutoff date of progress. So a Data Date of November 1, 2016 means that we have considered all progress up to November 1, 2016. (The default time for the Data Date in Primavera is 12:00 am so normally we do not include any progress on the Data Date; I will explain how to change the default time in another post).

In Microsoft Project there is the Status Date, which functions like our Data Date. But inexplicably, many Microsoft Project users never change the Status Date when updating the schedule. I realize I am using a bit of a broad brush here, but I have personally reviewed many Microsoft Project schedules where I was not able to determine the cutoff date of progress very easily because the Status Date was still set to the day the project started. I end up searching for the latest actual date in the update to approximate what must be the Status Date.

The end result of not moving the Status Date in Microsoft Project is that activities will have planned start and finish dates that are in the past. A nominal November 1, 2016 update will show activities starting and finishing before that date. That would be a mean feat unless one has a time machine! Now, I suspect that many Microsoft Project users are self-taught and the program is easier to learn than Primavera P6 or Primavera Contractor. So it is possible that many Microsoft Project users simply lack the formal training to apply the tool correctly.

One reason for the confusion might be Microsoft Project’s insistence on displaying the day you open the file as the Status Date. Granted, until progress is applied to the schedule nothing happens to the planned dates, but making the Status Date appear to be fluid is not a good idea. And I suspect many Microsoft Project users are not changing the Status Date because they think the date has already changed; it has, but until the schedule is calculated this date is meaningless. This is why the true Status Date is often the project start date.

If everything went according to plan, we could get away with not moving the Status Date. But that has not been my experience for the past 29 years that I have worked as a scheduler in the construction industry. Field Marshall Helmuth von Moltke famously said, “no plan survives contact with the enemy.” Battles and projects are both unique endeavors where anything can happen. Work often does not start according to the planned dates, takes longer to complete, or is performed out-of-sequence. Moving the Data Date is the only thing that keeps the schedule honest.

When I started my career as a professional scheduler I would often sit down with my clients and mark up the large (30″ x 42″) hand-drawn logic diagrams and tell them, “here are the activities on the critical path; it has been four weeks since I was last here, so you need to give me four weeks’ worth of progress along this path.” My clients would sometimes think I was being a bit harsh, but I knew what would happen when I changed the Data Date. The work not performed gets shoved to the right.

Temporary procrastination does not always cause an immediate impact to project completion, however. Activities that are ready to start but not currently on the critical path may still have enough Total Float to wait until the next schedule update. My favorite way to track these lagging, non-critical tasks is the Schedule Performance Index (SPI). The SPI compares planned progress in the baseline schedule to the actual progress in the current schedule, expressed as follows:

SPI = Performance Percent Complete ÷ Schedule Percent Complete

Performance Percent Complete sounds mysterious, but normally it is the same as Activity Percent Complete. You can check this setting under Admin > Admin Preferences > Earned Value. Schedule Percent Complete is merely the progress expected per the Project Baseline, whatever that might be. It is important to check which schedule is assigned as the Project Baseline since it may have been changed recently.

Because Performance Percent Complete is the numerator in the above equation an SPI of 1.00 or greater means that more work has been performed than expected. This is also quite hard to achieve, since SPI is based on the early dates in the schedule. So not starting a non-critical activity as early as possible hurts SPI just as much as starting a critical path activity late. For this reason I usually run SPIs filtered by: (1) all activities, (2) critical path, and (3) non-critical activities for comparison.

An SPI of 0.80 would tell us that we failed to complete 20% of the work scheduled for the current update period. Early in a project the SPI may not look so great, but the closer we get to the end of the project the SPI has to improve if we have any chance of finishing on schedule. The baseline can be the previous update and still be valid in some situations. We may have deviated so much from the original plan that running the SPI off the original plan is simply not relevant.

I do warn my students there is no clear threshold for SPI where being under a certain number means the project is clearly behind schedule. The most important thing is the trend. We cannot keep ignoring work that is otherwise ready to start if we want to avoid mass chaos during the waning moments of the project. Unless it will somehow cost us more money to start activities on time, what excuse have we got?

The only drawback to SPI is that the schedule must be resource-loaded, either costs or units. Without knowing the “weight” of each task Primavera cannot compare the progress of one task to another. The activity durations might be the same but the daily effort to perform the tasks can be quite different. In any case, we must still consider that not every activity may be resource-loaded (such as submittals) so SPI will not tell us anything about the progress on these tasks.

Getting back to the snowplow, the analogy that I always use is a broom sweeping the remaining work to the right. (Why we tend to see the future as being to the right and the past as being to the left is a bit curious, as if time travels west to east, but we seem to accept this as making sense). One of the participants in my Kansas City class mentioned how they think of the Data Date as a snowplow. I liked their analogy so much I warned them I would use it in my blog. And so I did!

Apr

Expected Finish Dates

Categories: Expected Finish, P6 EPPM, P6 Professional, P6 Tricks, Primavera Contractor

Tags: Expected Finish, Primavera Contractor, Primavera P6 EPPM, Primavera P6 Professional, Remaining Duration

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by Bill Pepoon

Some features of Primavera P6 are easy to ignore without a better appreciation of their true benefits. Expected Finish dates are a good example. The concept is pretty simple: pick a date when a task is expected to finish and – presto – the Remaining Duration is automatically adjusted to achieve the desired date. This works in all versions of Primavera scheduling software: P6 Professional, P6 EPPM and Primavera Contractor.

We typically use Expected Finish dates for long-lead items with big durations. It can take several months to fabricate and deliver specialized equipment, which means the task will span several update periods. So rather than have to manually adjust the Remaining Duration during every update, Expected Finish dates basically automate this process for us.

Several years ago on a project in Calumet City, IL the time required to procure blowers for a new building was nearly 18 months so I prepared a special procurement fragnet to more accurately track the blowers’ progress. My normal procurement fragnet of submit > review > fabricate/deliver was not enough for such an important long-lead item. This was a blower facility, after all, so if the blowers arrived late we would have had a major problem. With this in mind, I set up a series of activities to track the fabrication in Germany, transport to the port, loading on the ship, and the voyage to America.

There is perhaps one small catch with Expected Finish. We only recommend using Expected Finish dates on activities with progress. Once a task has started it is easier to decide whether a particular finish date is still valid. Otherwise, if the preceding logic is changed you might wind up with a very large Remaining Duration because the task is now starting much sooner than before.

Conversely, if an activity starts much later than anticipated because of re-sequencing the original Expected Finish date may be unrealistic (and possibly before the actual start date, which will obviously seem weird). So we are much better off waiting until the task has begun before putting too much faith in the Expected Finish date. We can verify that the preceding tasks are finished and therefore be more confident that no other obstacles remain.

There are just three steps required to set up an Expected Finish date. First, make sure you have checked the box next to Use Expected Finish Dates under the Schedule Options, as seen below:

Second, select an Expected Finish date under the Status Tab in the Activity Details window. In the example below I have selected February 19, 2016 as the Expected Finish date, which is about a month later than the current Finish date:

And third, schedule the project. The Finish date will now match the Expected Finish date. Note that if the Expected Finish date is not a normal work day according to the activity’s calendar then the next available work day will be selected instead.

What I like most about Expected Finish dates is that it reinforces the accuracy of the current Finish dates. In other words, the current Finish dates are not the product of Remaining Durations that may or may not have been verified recently. The Expected Finish dates tell me these are good dates.

One last consideration. If you are updating a cost-loaded schedule then I recommend using Physical as your % Complete Type. This allows us to update the Remaining Duration (via Expected Finish) independent of the percent complete used to calculate Earned Value.