Q2

Afro Maintenance is a small aircraft wing maintenance facility located in Seattle, Washington. They decides to improve material flow in the facility, using the load-distance method. The current process layout of facility is shown in below. The distance between adjacent departments have 10 feet (ex: distance between Entrance office and Receiving room is 10 feet), and distance between diagonal departments are 20 feet (ex: Entrance and Assembly room is 20 feet). Also, nonadjacent departments, such as the Entrance and Parts Room are 20 feet apart, and nonadjacent rooms, such as entrance and Inspection Room are 30 feet apart.

Afro Maintenance Process Layout

Entrance Office, 1	Receiving Room, 2		Parts Room, 3		Metallurgy Room, 4
							10
Breakdown Room, 5	Assembly Room, 6		Inspection Room, 7		Test Room, 8
10 feet		10		10

Number of Material movements (loads) between departments in one month.

1	2	3	4	5	6	7	8
	100	100	0	0	0	0	0	1 Entrance
		0	50	20	0	0	0	2 Receiving Room
			30	30	0	0	0	3 Parts Room
				20	0	0	20	4 Metallurgy Room
					20	0	10	5 Breakdown Room
						30	0	6 Assembly Room
							0	7 Inspection Room
								8 Test Room

Given the information, compute the total load-distance score in one month.

Node (Route)	Distance	Load	Load-Distance Score (D * L)
1-2	10	100	1,000
1-3	20
2-4
2-5	20
3-4
3-5
4-5
4-8
5-6
5-8
6-7
		Total L-D Score