O
oconnorkj
I am using two calendars in a project: one is a 12-hour calendar
(8:00A-8:00P) and the other is a 24-hour calendar. I have three
successive tasks named Paint Walls, Wait for Paint to Dry, and Paint
Trim. Paint Walls and Paint Trim are on the 12-hour calendar and Wait
for Paint to Dry is on the 24-hour calendar. The rationale is that
painters work on a 12-hour clock, but paint drying happens
around-the-clock. Paint Trim must lag Paint Walls in order for the
paint to dry.
Paint Walls (Task # 50) finishes at 5:30PM. I cannot link Paint Trim
to Paint Walls as 50FS+8h, because Paint Trim will start at 2:30PM the
following day--Project calculates and schedules the 2.5 hours from
5:30PM to 8:00PM, then the remaining 5.5 hours start at 8:00AM the next
day, ending at 2:30PM (when the working day includes a 1-hour break
from 12:00PM-1:00PM). Therefore, I include the Wait for Paint to Dry
task on the 24-hour calendar.
The Start and Finish times calculate properly using the Wait for Paint
to Dry task. Paint Walls (#50) finishes at 5:30PM. Wait for Paint to
Dry (#51) succeeds #50, starts at 5:30PM and finishes at 1:30AM. Paint
Trim (#52) succeeds #51 and starts at 8:00AM (since that is the start
of the 12-hour calendar day).
However, the problem is this: When using this approach, the critical
path blows up! As soon as I enter the Paint Trim task and link it to
the Wait for Paint to Dry task, the critical path is no longer there
(where it had been theretofore). All the tasks that follow Paint Trim
start a new path (in this case).
If I enter a dummy task (#52) after Wait for Paint to Dry, assign the
24-hour calendar, and schedule it for 6.5 hours, then link Paint Trim
(now #53) to the dummy task, my critical path comes back; that is, all
the tasks that were in the critical path before Paint Trim reappear.
Certainly this seems like an undesirable "feature" of MS Project. Does
anyone know what I can do differently to correct this scheduling
problem. Thanks,
Keith
(8:00A-8:00P) and the other is a 24-hour calendar. I have three
successive tasks named Paint Walls, Wait for Paint to Dry, and Paint
Trim. Paint Walls and Paint Trim are on the 12-hour calendar and Wait
for Paint to Dry is on the 24-hour calendar. The rationale is that
painters work on a 12-hour clock, but paint drying happens
around-the-clock. Paint Trim must lag Paint Walls in order for the
paint to dry.
Paint Walls (Task # 50) finishes at 5:30PM. I cannot link Paint Trim
to Paint Walls as 50FS+8h, because Paint Trim will start at 2:30PM the
following day--Project calculates and schedules the 2.5 hours from
5:30PM to 8:00PM, then the remaining 5.5 hours start at 8:00AM the next
day, ending at 2:30PM (when the working day includes a 1-hour break
from 12:00PM-1:00PM). Therefore, I include the Wait for Paint to Dry
task on the 24-hour calendar.
The Start and Finish times calculate properly using the Wait for Paint
to Dry task. Paint Walls (#50) finishes at 5:30PM. Wait for Paint to
Dry (#51) succeeds #50, starts at 5:30PM and finishes at 1:30AM. Paint
Trim (#52) succeeds #51 and starts at 8:00AM (since that is the start
of the 12-hour calendar day).
However, the problem is this: When using this approach, the critical
path blows up! As soon as I enter the Paint Trim task and link it to
the Wait for Paint to Dry task, the critical path is no longer there
(where it had been theretofore). All the tasks that follow Paint Trim
start a new path (in this case).
If I enter a dummy task (#52) after Wait for Paint to Dry, assign the
24-hour calendar, and schedule it for 6.5 hours, then link Paint Trim
(now #53) to the dummy task, my critical path comes back; that is, all
the tasks that were in the critical path before Paint Trim reappear.
Certainly this seems like an undesirable "feature" of MS Project. Does
anyone know what I can do differently to correct this scheduling
problem. Thanks,
Keith