Given in the following table are the tasks necessary for final assembly of a hospital bed, the length of time needed to perform each task, and the operations that must be completed prior to subsequent operations. Construct a precedence diagram and balance the assembly line for a desired cycle time of 14 minutes. Draw a schematic diagram of the balanced line. How many beds can actually be assembled in an eight-hour period?
|
Element
|
Precedence
|
Time (min)
|
|
A
|
None
|
4
|
|
B
|
None
|
5
|
|
C
|
None
|
8
|
|
D
|
A
|
4
|
|
E
|
A, B
|
3
|
|
F
|
B
|
3
|
|
G
|
D, E
|
5
|
|
H
|
F
|
7
|
|
I
|
G, H
|
1
|
|
J
|
I
|
7
|
|
K
|
C, J
|
4
|