IBM ILOG Scheduler User's Manual > Getting Started with Scheduler > Adding Transition Times > Describe the Problem--Example 5

In this example, we have one worker who is required to build three houses. The tasks in each house have different durations corresponding to the house design (Duration Design 1, 2, or 3 in Table 5.1). There is also a transition time between tasks that is based on the activity transition type. In this example, every activity has its own transition type. The actual transition times are defined later.

Table 5.1 Multiple House Construction Activities 
Activity  
Transition Type 
Duration Design1 
Duration Design2 
Duration Design3 
Preceding Activities 
masonry 
1 
7 
12 
15 

 
carpentry 
2 
3 
5 
3 
masonry 
plumbing 
3 
8 
10 
10 
masonry 
ceiling 
4 
3 
5 
6 
masonry 
roofing 
5 
1 
2 
2 
carpentry 
painting 
6 
2 
5 
3 
ceiling 
windows 
7 
1 
2 
2 
roofing 
facade 
8 
2 
3 
3 
roofing, plumbing 
garden 
9 
1 
2 
2 
roofing, plumbing 
moving 
0 
1 
1 
1 
windows, facade, garden, painting 

In addition, the second house cannot be started before day 5 and must be finished by day 80.

As in all our previous examples, our objective is to minimize the makespan of the problem.