(1) Explain your problem, don't simply post "This isn't working". What were you doing when you faced the problem? What have you tried to resolve - did you look for a solution using "Search" ? Has it happened just once or several times?
(2) It's also good to get feedback when a solution is found, return to the original post to explain how it was resolved so that more people can also use the results.
What does this mean? "explain the exposed and hidden (patent and latent) contingency in the schedule.
A related odd question is "Does the Basis of Schedule indicate what percent of each activity's duration contains build-in "patent contingency?" - I googled it - nothing comes up.
Printer-friendly version
Send to friend
The best way to disclose and explain why the difference in activity durations is by disclosing volume of work and crew production rates.
Experienced schedule reviewers will always question how activity durations are calculated to validate the schedule and reduce activity duration padding, a principal culprit of float sequestration.
Modeling of seasonal adverse weather shall be explicit and dynamic: crew selection and crew production rates shall be a function of the season, if an activity or part of it is delayed the model shall adjust durations considering the changes in production rates. Doing this by hand can become a monumental task when changes in durations move other activities that are linked by logic as well as by resource leveling. It is not good enough to consider adverse weather days only and not consider the impact of the season on the work days.
more dramatic impacts are not unusual, in winter in places where it do not snow cold weather may not stop work but different crew/equipment and shorter workdays may mean a substantial reduction in crew production rate and increased activity duration.
The first part "explain the exposed and hidden (patent and latent) contingency in the schedule. They want you to tell them if you have padded any durations (from the normal industry rates of installation) or if you have consiered adverse weather into your schedule. Have you considered a less than optimum resources due to covid ?
The next part "Does the Basis of Schedule indicate what percent of each activity's duration contains build-in "patent contingency?". This means did you use a percentage multiplier for certain types of activities. For instance maybe for the outside work during the cold weather months you multiplied your original duration that would have originally been done in warm weather by a certain percentage. Another example is if you are doing work 20 ft in the air instread of 8 ft in air. In other words have you used a performance FACTOR (thus increasing the durations from their normal durations by a certain percentage) for any activities ? If so what type of activities have you used it on and what performance factor did you use ?
John,
There are many ways that contingency can be hidden into schedules, see my post here: Schedule Contingency Methods | Australasian Project Planning (austprojplan.com.au). I'm guessing what this request is to ensure it's all explicitly identified, rather than buried in the details
The adjective meaning of patent is "easily recognizable; obvious". - who would use that word - a Laywer, the British? - seems weird.
Email: PPadmin@planningplanet.com
Replies