The formula of Basic Time = Observe Time x Rating Factor
Basic Time
Basic time is the most likely time required to make garments considering observed time and applicable rating factors.
Observe Time
Time is taken to do work when an observer is observing
closely and recording the worker’s work speed.
Calculation of Observe Time = Total Cycle Time is divided by the Number of Cycles
Cycle Time
Cycle Time is the time between starting a garment manufacturing and finishing those garments.
Rating Factor
The rating factor is assigned based on an evaluation of worker performance which is conducted through eye judgment. A worker can be fast, or slow and the rating is on a scale of 100% to lower.
Costing SMV is calculated for sending SMV information to buyers. Normally 5% additional time is added to the actual SMV.
Costing SMV = Actual SMV + (Actual SMV x 5%)
Example of Calculation of SMV in Garments
Suppose for making a product the following assumption is
there
Observe Time = 25 Minutes
Rating of Operator = 80%
Considering Allowance = 10%
Basic Time = 25minutes x 80% = 20 minutes
Allowance = 20 x 10% = 2 Minute
So, SMV = 20 minutes + 2 minutes = 22 minutes for making a
particular garments product
Calculation of Capacity of Single Operator in Garments
If an operator works for 10 hours a day
30 minutes to make a product
Capacity = (1 operator x 10 hours x 60 minutes)/30 Minutes = 20 Pieces of Garments by an operator
If you assign 100 operators then your capacity will be = 100
operators x 20 pieces = 2000 pieces a day
Calculation of Efficiency Percent
SMV 22 Minutes
Working Hours 10 a Day
Number of Operators 100 person
Actual Production 2000 pieces
Efficiency (%) = (2000 pieces x 22 minute)/(100 operators x 10 hours x 60 minutes) x 100 = 73.33%
whereas,
Target = (10 hours x 60 minutes x 100 operators)/smv 22
minutes = 2727 Pieces of garments
