Optimization of Flow Shop Scheduling in Precast Concrete Component Production via Mixed-Integer Linear Programming

Table 6

Overtime plan for scheme (1).

Component production sequence	Process operation time (h)
	Mold assembling	Reinforcement setting	Concrete casting	Mold removal	Finishing/repairing
1	0	0	0	0	0
2	0	0	0	0	0
3	0	0	0	0	0
4	0	0	0	0	0
5	0	0	1	0	0
6	0	1	2.5	0	0.8
7	0	1.8	3.7	0.7	0
8	0	0	0	0	0
9	0	0	0	0	0
10	0	0	0	0	0
Overtime of each process (h)	0	2.8	7.2	0.7	0.8
Total overtime (h)	11.5