The ABC Manufacturing Company designed 9 new buildings (symbolized as A, B, C, D
ID: 349958 • Letter: T
Question
The ABC Manufacturing Company designed 9 new buildings (symbolized as A, B, C, D, E, F, G & H. Each building will be the shop for one type of operation only. The process sequence and areas is given in the Table below. The maximum load for the material handling is 100 Kg. The problem is to determine the optimum allocation of the 9 operations in the proposed new layout. The following assumptions are given:
Each building is of equal area
Methods of production control specify the sequence of operations and indicate that they are not to be changed.
Product mix remains stable (No. products of each variety is fixed)
The prime measure of effectiveness of the layout is the sum of the products of Quantity multiplied by the weight of each part multiplied by the distance traveled.
Routing Summary
Operations:
# of m/cs Area
(r) Raw Material Stores 60’ * 50’
(p) Pattern Shop 6 m/cs @ 12’ * 7’
(f) Foundry 4 m/cs @ 10.5’ * 6’
(w) Welding 2 m/cs @ 12’ * 6’
(d) Drilling 2 m/cs @ 14’ * 10’
(l) Lathes & Planers 4 m/cs @ 12’ * 4’
(m) Milling 4 m/cs @ 12’ * 8’
(i) Inspection 3 stations @ 50’ * 40’
(g) Finished Parts Stores 70’ * 50’
Part No.
Quantity/week
Weight Kg.
Operation Sequence
1
5000
1
r - p - l - d - m- i - g
2
3000
0.4
r - w - l - m - d - i - g
3
2500
2
r - p - l - i - g
4
1000
3
r - p - f - m - i - g
5
3500
1.5
r - p - f - g
6
4000
2.5
r - m - d - l - w - i - g
7
1500
0.4
r - l - d - m - i - g
8
2500
2.5
r - l - m - i- d - w - g
9
4500
1.5
r - w - m - l - d - i - g
Project Requirements:
(a)Using CRAFT program, determine an optimal relative allocation of this department for both rectilinear and Euclidean movements..
(b)Develop another rough layout allocating Operation “r” in Buildings “A”, “F” & “H”.
(c)Develop a final block diagram based on the results in requirements (a) and (b).
(d)Compare your results with the one generated from Project 2 (Travel Chart Technique)
Note: layout.xla
Routing Summary
Operations:
# of m/cs Area
(r) Raw Material Stores 60’ * 50’
(p) Pattern Shop 6 m/cs @ 12’ * 7’
(f) Foundry 4 m/cs @ 10.5’ * 6’
(w) Welding 2 m/cs @ 12’ * 6’
(d) Drilling 2 m/cs @ 14’ * 10’
(l) Lathes & Planers 4 m/cs @ 12’ * 4’
(m) Milling 4 m/cs @ 12’ * 8’
(i) Inspection 3 stations @ 50’ * 40’
(g) Finished Parts Stores 70’ * 50’
Part No.
Quantity/week
Weight Kg.
Operation Sequence
1
5000
1
r - p - l - d - m- i - g
2
3000
0.4
r - w - l - m - d - i - g
3
2500
2
r - p - l - i - g
4
1000
3
r - p - f - m - i - g
5
3500
1.5
r - p - f - g
6
4000
2.5
r - m - d - l - w - i - g
7
1500
0.4
r - l - d - m - i - g
8
2500
2.5
r - l - m - i- d - w - g
9
4500
1.5
r - w - m - l - d - i - g
Explanation / Answer
A(r) B(p) C(f) D(w) E(d) F(l) G(m) H(i) I(g) A(r) (5000*1+2500*2+1000*3+3500*1.5)*20=365000 (3000*0.4+4500*1.5)*40= 318000 (1500*0.4+2500*2.5)*50= 342500 4000*2.5*60= 600000 B(p)
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