How to calculate Line efficiency in apparel
In this article garment merchandising will tell you that how to calculate Line efficiency in apparel or how to estimate
Line efficiency in apparel.In the current situation where the world is standing. You cannot run a business if you don’t
know how to use your resources in the best way. One of the best way to know about your resources utilization is
efficiency calculation.How efficiently your labor is working.How efficiently you are getting your targets.How
efficiently you are competing with your competitors. If you don’t know what resources are being used, you can’t meet
your exact capacity. For this purpose, we calculate the efficiency of our resources. Like the efficiency of the operator,
the efficiency of any section, efficiency of line, etc.
The formula for Efficiency:
The general formula for efficiency is
(Output/Input)*100
Factors needed for efficiency calculation in garments:
- Direct Labor: Direct labor means labor working at the moment. Include just present labor while calculating efficiency for the line.
- Shift Time: How many Minutes each operator works in a day. Including their overtime ( the time taken by a worker after the shift ends)
- Daily output: Total production of the line for which efficiency needs to be calculated.
- Garment SAM: Each style has its own SAM (standard Allowed Mints). Take the SAM of that garment which is getting out at final inspection table or which number of pieces are being taken as the final output for efficiency calculation
An example of how to calculate Line efficiency in the apparel industry is given below for your better understanding
Here
Output=SAM Produced
SAM produced is the multiplication of SAM of garment and output of that garment.
Input = Available Mints + Machine Down Time – Over Time
Available Minutes is the multiplication of present labor and shift time
Let’s suppose, a line of 75 operators are producing 900 garments per day and SAM of that particular garment is 22.8. The shift time of that line is 480 minutes (8 hours). If they do not achieve 900 pieces within shift time, they will do work 120 minutes more than the shift time. Two machines would be down for 80 minutes that day.
Now figures will be like below.
Out Put=SAM Produced = 900*22.8=20520
Input=Available Minutes= (75*480) =36000
Machine down Time=80
Overtime= 120
Put all these figures in the efficiency formula.
Efficiency= 22.8*900/(75*480)+80-120
Efficiency= 57.06%
Out put | SAM | Direct labor | Shift time in mints | down time | Over time | Efficiency |
900 | 22.8 | 75 | 480 | 80 | 120 | 57.06% |
you can practice it by your data. Efficiency is a key factor to evaluate operators performance. The efficiency of the
complete line indicates the cumulative effort of the workers of that line and using the same formula you can also
calculate the efficiency of any specific operators. Let’s take an example of individuals efficiency.
An operator is overclocking a fly for basic five-pocket jeans. SAM of his/her operation is 0.10.And his/her producing
units are 2500. Overtime for that operator is 40 mints and machine downtime is 20 mints.
Here is the calculated efficiency
Efficiency= 0.10*2500/(1*480)+20-40
Efficiency= 54.34 %
Out put | SAM | Direct labor | Shift time in mints | down time | Over time | Efficiency |
2500 | 0.1 | 1 | 480 | 20 | 40 | 54.34% |
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