Website Upgrade Incoming - we're working on a new look (and speed!) standby while we deliver the project

Tips on using this forum..

(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.

The Difference Between Calculating Start to start lag metods

2 replies [Last post]
Amro Ahmed
User offline. Last seen 3 years 5 weeks ago. Offline
Joined: 5 Jan 2009
Posts: 107

Anyone please can  explain me the difference between calculating start to start lag from Predecessor and actual start

I would like if some one can give me sample or example

Replies

Khuong Do
User offline. Last seen 2 years 39 weeks ago. Offline
Joined: 21 Feb 2010
Posts: 118
Groups: None

Hi there,

I wrote an article to explain these options.

Kindly read it here https://doduykhuong.com/2020/01/26/primavera-p6-schedule-options-calculate-start-to-start-lag-from/

Regards,

Khuong

Ravi Katare
User offline. Last seen 10 years 23 weeks ago. Offline
Joined: 14 Jul 2014
Posts: 23
Groups: None
Hi, When a start-to-start relationship exists and the predecessor starts out of sequence, the successor activity is delayed until that expires and all predecessor relationships have been satisfied. You can choose to subtract the lag from the predecessor's actual start date or its internal early start date. See Start to start relationship. Choose Actual Start when you want the successor's start to depend on the time elapsed from the predecessor's actual start (regardless of the amount of work that has been accomplished in the predecessor activity). The successor's start date is the data date plus any remaining lag. Choose Early Start when the successor's start depends on the amount of work that the predecessor activity accomplishes. The expired lag is calculated as the number of workperiods between the actual start and the data date. The successor's start date is the predecessor's internal early start plus any remaining lag. - Ravi