Activity Relationship Chart (rel Chart) 30596b

Activity Relationship Chart (REL chart)

SYSTEMATIC LAYOUT PLANNING (Muther 1961)

Activity Relationship Chart (REL chart) Rating Definition A

Absolutely

E

Especially Important

I

Important

O

Ordinary closeness OK

U

Unimportant

X

Undesirable Code Reason 1

Flow of materials

2

Ease of supervision

3

Common personnel

4

necessary

5

Convenience

6

Activity Relationship Diagram

Production Space Requirements

Process

SAW

MILL

Equipment

Armstrong hack saw K & T plain mill Vertical mill Hand mill

No.

Machine Center Dimensions Per Machine (ft) Depth x Width

3

10 x 9

190

570

5

13.5 x 10.5

142

710

7

11 x 10.25

113

791

4

7.25 x 9.75

71

284

Machine Center Area Total Process per Machine Area (ft2 ) (ft2)

Contd. Process

No.

Machine Center Dimensions Per Machine (ft) Depth Width

2

8.25 x 6.5

54

108

2

7.5 x 4.5

34

68

1

7.45 x 10.5

82

82

Gisholt

1

9.25 x 17.75

164

164

Monarch

2

14 x 6.25

88

176

Hardings

1

9.5 x 5

48

48

W & S turret B & S automatic

1

8.5 x 20.25

173

173

1

7.5 x 15.5

116

116

Equipment

2 Spindle Avey 1 DRILL

TUM

Spindle Delta 6 Spindle Delta

Machine Center Area Total Process per Machine Area (ft2 ) (ft2)

Process

FORM PAINT CLEAN ASSEMBLE PACKAGING

Equipment

No.

Gas furnance 1 Arbor press X Dip tank 2

Machine Center Dimensions Per Machine (ft) Depth Width

Machine Center Area Total Process per Machine Area (ft2 ) (ft2)

8 x 7

56

56

7 x 12

84

168

Spray booth

1

9 x 11

99

99

Tumble

1

7 x 6

42

42

Bench

1

8 x 7

56

56

Bench

1

8 x 7

56

56

Avey drill

2

8.25 x 6.5

54

108

Bench

1

8 x 7

56

56

Total square feet required

3,931

40 % aisle space

1,572

Production space required

5,503

Nonproduction activity space requirements Activity Storage

Area (sq.ft )

Warehouse

180

others

180

Main Office

500

Hallway

120

rest rooms

100

Men

84

Women

60

Foreman

Desk

24

Maintenance

Desk

20

Parts

80

Tool crib

50

Receiving and Shipping

50

Office

Locker rooms

Total Space required

1,448

• o the 5,503 square feet of floor for production, we must add the 1,448 square feet to give an estimate of 6,951 square feet of floor space required in total.

Space relationship diagram

Block plan

12

13

REL Chart for Constructing New Layouts Code

Function

1

Receiving

2

Area(sqft)

No.of unit area templates (blocks)

12000

6

Milling

8000

4

3

Press

6000

3

4

Screw M.

12000

6

5

Assembly

8000

4

6

Plating

12000

6

7

Shipping

12000

6

1.

Select the first department to enter layout (using diagramming worksheet)

2.

Select the second dept. to enter the layout.

3.

Select the third department to enter the layout

4.

Select the fourth department to enter the layout

5.

Place dept. n similar to 3rd and 4th steps.

1

1

1

4

4

1

1

4

4

3

1

4

2

3

3

4

2

2

2

5

6

6

6

5

6

6

6

5

7

7

7

5

7

7

7

Graph-based construction method for new layouts

Rel-chart

Total Weight:63

Total Weight: 71

Adjacency graphs for alternative block layouts

Graph-based construction methods for new layouts o STEPS (node insertion algorithm in building adjacency graph): 1. Select the department pair with the largest weight. 2. Select the other depts consecutively based on the sum of the weights with respect to the depts already selected. 3. Place the selected dept on one of the faces of the graph) 4. Build the block layout based on the final adjancency graph.

Graph-based construction method for new layout • Example

Dr. Muzaffer Kapanoglu-Copyright 2005

Dr. Muzaffer Kapanoglu-Copyright 2005

SUMMARY • Objectives in different kinds of Layout. - Process, Product, Mixed. • Systematic Layout Planning for Process Layouts. • From to charts to measure material handling effort. • A precursor to Computerized Layout Planning.