Easy identification of the critical path and thus critical activities. Easy determination of slack time. Task is to paint an old fashioned, rectangular wooden army barracks. Fifteen soldiers under your command. Three distinct steps Old loose paint scraped from walls.
New paint is applied.
Razor blades used to remove excess paint from the windows. One Approach Scrape all walls, then paint all walls, then remove excess paint from around windows. This will take 36 hours. The best time to remove paint from the window panes is shortly after application, before it has dried. Another Approach Work one side at a time.