Free Float and LAG

Hi All,

1st am New hear but i am so happy coz i am a part of this planning planet

2nd What is the Difference between Free Float and Lag?

Regards,

A
Abhishek Choubey 👤 Member for 15 years 6 months

Hi..

I think Lag is an offset or delay from an activity to its successor. This could be negative or positive.

 

Regards,

Abhishek

R
Rafael Davila 👤 Member for 22 years 3 months

1 cyl car

Mike,

Sell your one cylinder car and get something better. Same goes to limited functionality of old CPM, the absence of lag modeling when needed is as bad as its use when not appropiate.

Best regards,

Rafael

M
Mohamad Abdelsala 👤 Member for 15 years 4 months

thanks mike actually i asked in awrong way , i know the difference but when u gonna to calculate in manually (i am doing this exersice coz i wanna to understand why i need to use zero free float constraint) so while u r calculation it manually in PDM for example its the same formula am i rite?

M
Mohamad Abdelsala 👤 Member for 15 years 4 months

thanks mike actually i asked in awrong way , i know the difference but when u gonna to calculate in manually (i am doing this exersice coz i wanna to understand why i need to use zero free float constraint) so while u r calculation it manually in PDM for example its the same formula am i rite?

M
Mike Testro 👤 Member for 20 years 5 months

Hi Mohamad

Free float is the spare time available between finishing one task and starting another in the same logic sequence.

Lag is an artificial amount of time built into the logic to stop a task from starting or finishing when the natural logic says it should.

Use of Lags is not good planning practice unless it is to set curing period.

Best regards

Mike Testro

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