The critical path It is the chain of activities that has no slack: if any of them is delayed one day, the work finishes one day later. Therefore, to deliver sooner, it only helps to shorten activities that are on that route.
What is schedule crashing
Do schedule crashing is to reduce the duration of a critical activity by adding resources: more labor crews, overtime, or additional equipment. Every day you win has an extra direct cost.
How to decide
- Start with the critical activity that costs the least to shorten per day.
- After each step review the route: another chain may become critical.
- Compare the extra cost with what you save in field overhead (resident, rent, security) and with contract penalties or bonuses.
- Stop when cutting one more day costs more than it saves.
In KŌSAN
In Construction schedule → Schedule crashing You move the delivery date and KŌSAN chooses which activities to shorten, how and how much it costs, with a cost curve per day in advance. Nothing applies to the program until you confirm it.