SF/FS/SS/FF mapping to depends, precedes

[feng]

Chris,

Need a help to clarify the mapping between Start-to-Finish, Finish-to-
Start, Start-to-Start, Finish-to-Finish using depends and precedes.

Here is my understand, please verify:

1. Finish-to-Start: A depends B onend => A[FS]B = B can't start before
A is finished
2. Finish-to-Finish: A precedes B onend => A[FF]B = B can't finish
before A is finished
3. Start-to-Start: A depends B onstart => B[SS]A = A can't start
before B starts
4. Start-to-Finish: A precedes B onend => A[SF]B = B can't finish
before A starts

Is this correct?

Feng

[Chris Schlaeger]

Yes, this is correct. This is what the final plan will look like. But
the scheduler will always schedule the referenced task first in case 2
and 3.

In the A[FF]B case, this means the end date from A must be determined
first and then B is scheduled ALAP (end-to-start) to determine the
start date.
In the B[SS]A case, the start date of B must be determined first and
then A is scheduled ASAP (start-to-end).

Chris