Top 5 Daily Useful IE Formula in Garments Industry

IE Formula In the Garments Industry

As an Industrial engineer, the IE formula is the key to any industrial engineering daily basic work; as IE, we need this IE formula in our workplace. This IE formula helps us to easily calculate SMV, Efficiency, Line Capacity, Operator Capacity, Line Balancing, etc. It is an essential element in our workplace that helps us make informed decisions.

SMV (Standard Minute Value) Calculation

SMV is the amount of time a qualified worker should spend to complete a specified task.

SMV Formula
SMV= Basic time+(Basic time × Allowance)
Basic Time: (Observe Time × Rating)
Observe Time: Total Cycle time÷ No of Cycle
SMV=(Observe Time × Rating)+(Observe Time × Rating)×Allowance

Example,
Observe Time: 20 Seconds
Rating: 90%
Allowance: 15%
At first, we need to convert our Observe time Seconds to Minute Observe Time: 20/60=0.33 Min

Now,
SMV=(Observe Time × Rating)+(Observe Time × Rating)×Allowance
=(0.33×90%)+(0.33×90%)×15%
=0.34 SMV
Answer: SMV 0.34

Efficiency Calculation

Profitability depends mainly on the efficiency of workers and overall the factory. So, this has a significant impact on earnings.

Efficiency Formula
Efficiency= 〈Output × SMV〉÷〈Manpower × Working Hour×60〉×100

Example
Output: 2700
SMV: 4.95
Manpower: 25
Working Hours: 11

Now,
Efficiency= 〈Output × SMV〉÷〈Manpower × Working Hour×60〉×100
Efficiency= 〈2700×4.95〉÷〈25×11×60〉×100
Efficiency=13365÷16500×100
Efficiency= 81%
Answer: Efficiency 81%

Line Capacity Calculation

The Line capacity refers to the amount of pieces that Line is expected to produce.

Line Capacity Formula
Line Capacity: Manpower × Working Time(Minute)×Target Efficiency ÷ SMV

Example,
Manpower: 25
Working Hours: 11 Hours (11×60)=660 Minute
Target Efficiency: 81%
SMV: 4.95

Now,
Line Capacity: Manpower × Working Time(Minute )×Target Efficiency ÷ SMV
Line Capacity: 25×660×81%÷4.95
Line Capacity: 2700 Pcs
Answer: Line Target/Capacity 2700 Pcs

Operator Capacity Calculation

Operator capacity refers to the amount of pieces that an operator is expected to produce.

Operator Capacity Formula 1
Operator Capacity: 3600 (Working Time in Second)÷ Avg Cycle Time In Second + Allowance

Example 1
Average Cycle Time: 42 seconds
Allowance: 15%

Now,
Operator Capacity: 3600÷42 Sec+15%
Operator Capacity: 75 Pcs
Answer: Operator Capacity 75 Pcs Only

Operator Capacity Formula 2
Operator Capacity: 60 ÷ Process SMV

Example,
Process SMV: 0.80

Now,
Operator Capacity: 60÷0.80
Operator Capacity: 75 Pcs
Answer: Operator Capacity 75 Pcs Only

Line Balancing Calculation

Line Balancing is leveling the workload across all operations in a line to remove bottlenecks and excess capacity.

Line Balancing Formula
Line Balancing: 〈Lowest Capacity(Bottleneck Process)×SMV〉÷〈Manpower×60〉×100

Example,
Lowest Capacity: 220 Pcs
SMV: 5.80
Manpower: 25

Now,
Line Balancing: 〈Lowest Capacity(Bottleneck Process)×SMV〉÷〈Manpower×60〉×100
Line Balancing:〈220)×5.80〉÷〈25×60〉×100
Line Balancing: 85%
Answer: Line Balancing 85%

Also Read: 80 Most Important IE Interview Questions With Answer