Important Formula Tips for RMG Merchandisers & Profession.

Some of the important rules in the following.

1. Target = 60 / SMV x No. of worker x working hour x expected efficiency.
2. Target = 60/SMV.
3. Team target =(60/SMV) x Present operator x Organization efficiency.
4. Target per day = Working hour x 60 x No. of operator / Target SMV.
5. Capacity=Average of total absorb time x 1.66 + 30% Allowance / 60.
6. Factory capacity=No. of operator x working minutes + Present % x average factory

efficiency.

7. Capacity per day = Present operator x working hour x organization efficiency x Attendance.
8. Weekly capacity = No. of operator’s x Absenteeism x Clock minutes per week x Average

factory efficiency.

9. Marker efficiency = Area of patterns in the marker / Total area of the marker x 100.
10. Load = (Contract size x work content) contract 1+ (Contract size x work content)

Contract 2 + etc.

11. Load = Order quantity x Work content (SMV of garments).
12. Observe time = Total cycle time / No. of cycle.
13. Basic time = Average of observe time X Rating %.
14. Sam = Basic time x Allowance.
15. Rating = Observe time x Standard rating / Standard rating.
16. Cycle time = 60 / Team target.
17. Pitch time = Total SMV / Present operator.
18. Efficiency = Earn hour / Available hour x 100
19. Efficiency = SMV / Total time.
20. Earn hour = (Production x SMV) / 60.
21. Available hour = Working hour x Use machine (Total manpower)
22. Performance = (Earn hour / Available hour – Off standard time) x 100.
23. Improvement = 1- (Production / Capacity).
24. Balancing efficiency = 1-Balancing loss.
25. loss pcs = (60/SMV) x Available hours’ x avg factory effi (61%) -Q.C Pass
26. Balancing loss = AML-TML/AMLx100.
27. Standard time = Net operation time x (1+ Ratio of loss time).
28. Daily output = Working hours (seconds) + Standard time.
29. Output per operator = Work hours (second) / Total time of operations.
30. Required No. of operators = Targeted daily output / Daily output per operator.
31. Target daily capacity = Daily work hours / Standard process time (SPT).
32. Daily capacity per worker = Daily capacity / No. of workers = Daily Work hours / Standard total processing.
33. Organization efficiency = Pitch time / Bottle neck process time (x100) = 100/140 x 100 = 71.4%
34. Upper limit = Pitch time / Target organization efficiency = 100 / 0.85 = 117.6 seconds.
35. Lower limit = 2 x Pitch time – Upper limit = 2 x 100 – 117.6 = 82.4 seconds.
36. Planned daily work flow = Daily work hours / Standard process time (SPT) x organization efficiency.
37. Accumulated average time = Daily work hours/Accumulated x No.of days x standard No.of workers in

the group/No. of pieces produced.

37. SMV = Basic time + Allowance time + bundle time.
38. DHU = No. of defect observe / No. of garments checked.
39. Booking fabric K.G. = Order quantity / 12 x Fabric consumption per doz.
40. Garments K.G. = Total receive fabric kg – (Save return kg + Jute kg + Wastage fabric kg)
41. Input to sewing pcs. = Total in pcs – (Print Embroidery short & wastage + Cutting wastage pcs.)
42. Fabric consumption (CM) = Length x chest x 2 x GSM / 1000 / 10000 x 12 + Wastage%.
43. Fabric consumption (Inch) = Length x chest x 2 x GSM / 1000 / 1550 x 12 + Wastage%.

Md.Mahbub-Ul Islam

RMG Consultant & Researcher