Guide 9: Availability - The Silent Killer of Projects

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Guide 9: Availability - The Silent Killer of Projects

What's this Guide about?

The Importance of Availability

Here's a simple piece of project estimation.

A job is estimated to be 10 person-days, Charlie's going to do it and Charlie's available full-time (i.e. 5 days per week). Then the job will take - its duration is - 2 weeks.

Now, supposing it happened that Charlie was only available 1 day per week. Then

1. The job would take 10 weeks
2. It's fair to say that it would take at least 10 weeks, since we would now also have to factor in the put-down-pick-up overhead that would be occurring as well.

But even assuming the job stayed at 10 weeks, notice what has happened: Something that didn't seem that serious - Charlie available 1 day per week rather than 5 - and which on a large project, we mightn't even notice - could potentially cause the project end date to move by 2 months.

Table of Contents

• Introduction
• What's this Guide about?
• How is the Guide structured?
  1 The Importance of Availability
  2 Calculating Real Availability

What you get:

• The Guide itself
• Availability Calculator