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A Presentation onBlock and Relationship Diagramming
Submitted to:- Submitted By:-Mr. S.K. Gupta Veeraj Vashishtha(Professor Operations) (NU- MBA Year 1)
Veeraj Vashishtha NU-MBA
Veeraj Vashishtha NU-MBA
What are
Blocks?
Veeraj Vashishtha NU-MBA
Finishing Unit
Production
AssemblingShipping
Shipping
Veeraj Vashishtha NU-MBA
Block Diagramming Block Diagramming is a technique of designing a
process layout and is used when quantitative data is available.
Block diagramming is one way to visualize the amount of movement that occurs between departments.
Different blocks represent different departments of the organization.
The main objective is to reduce the transportation cost
Veeraj Vashishtha NU-MBA
Production
Assembling
ShippingShipping Finishing Unit
Veeraj Vashishtha NU-MBA
Terms used in Block Diagramming
Unit Load: Refer to the quantity in which material is moved/transported from one department to the other.
Non Adjacent Load: Refer to the load between departments which are not adjacent in their location.
Veeraj Vashishtha NU-MBA
Process of Block Diagramming
Step 1• Create a Load Summary
Chart
Step 2• Calculation of Composite
Movement
Step 3• Preparation of Trial
Layouts
Veeraj Vashishtha NU-MBA
Example of Block Diagramming (cont.)Step 1: Load Summary Chart
Department 1 2 3 4 5 6
1 -- 20 20 80
2 -- 10 75
3 -- 15 90
4 -- 70
5 --
6 --
Veeraj Vashishtha NU-MBA
Example of Block Diagramming (cont.)Step 1: Gather Information (Initial Layout)
2 4 3
6 5 1
Veeraj Vashishtha NU-MBA
Example of Block Diagramming(contd)Step 2: Calculation of composite Movements
10
Veeraj Vashishtha NU-MBA
Example of Block Diagramming (cont.)
Step 3: Develop a block plan (Show new traffic)
2
5
1
4
6
3
10
90
1570
75
8020
20
Veeraj Vashishtha NU-MBA
Exercise on Block Diagramming
1 2 3
4 5
Department 1 2 3 4 5
Load Summary Chart
FROM/TO DEPARTMENT
1 — 100 502 — 200 503 60 — 40 504 100 — 605 50 —
Initial Layout
Veeraj Vashishtha NU-MBA
GRID 1.
1 2 3
4 5
110
40
100
50150
200
50
60
Veeraj Vashishtha NU-MBA
Solution.
1 2
3
4
5
100
200
150
50
50 6040110
Grid 2
Nonadjacent Loads: 0
2 3 200 loads2 4 150 loads1 3 110 loads1 2 100 loads4 5 60 loads3 5 50 loads2 5 50 loads3 4 40 loads1 4 0 loads1 5 0 loads
Final Chart
By adding the loads of 2 to 4 i.e.50 &4 to 2i.e.100
By adding the loads of 1 to 3
i.e.50 &3 to 1i.e.60
Veeraj Vashishtha NU-MBA
Relationship Diagramming
Schematic diagram that uses weighted lines to denote location preference and is used when quantitative data is not available.
Muther’s grid format for displaying manager preferences for department locations
Veeraj Vashishtha NU-MBA
Relationship Diagramming: Example
Production
Offices
Stockroom
Shipping and receiving
Locker room
Toolroom
A A
A O
O
OO
O
U
U U
U
EX
I
A Absolutely necessaryE Especially importantI ImportantO OkayU UnimportantX Undesirable
Veeraj Vashishtha NU-MBA
Relationship Diagrams: Example (cont.)
Veeraj Vashishtha NU-MBA
Relationship Diagrams: Example (cont.)
Offices
Stockroom
Locker room
Toolroom
Shipping and receiving
Production Key: AEIOUX
(b) Relationship diagram of revised layout.
Veeraj Vashishtha NU-MBA