Consumption Calculation for Woven Basic Pant/Trouser

Woven Basic Pant Consumption Calculation

Noor Ahmed Raaz
Faculty Member, Dept. of Textile Engineering,
Atish Dipankar University of Science & Technology
Email: raju.uttara105@gmail.com

 

Consumption Calculation for Woven Basic Pant/Trouser:
Woven basic pant consumption calculation is widely used in apparel industry and specially in apparel merchandising. It is important task for merchandiser. If calculation is not correct then company will face to huge loss and reputation also fall. This article will be helpful for beginners who are involved in apparel sector.

Basic pant structure
Fig: Basic pant structure

Here,

Fabric width =59″
½ waist circular =46cm + 8 (Seam allowance) = 54cm
Front rise = 28cm ( Including waist belt ) + 8 (Seam allowance) = 36cm
½ Thigh circular = 36cm + 6 (Seam allowance) = 42cm
Inseam length = 821cm + 3 (Seam allowance) = 85cm

Consumption Formula:

Consumption calculation for woven basic pants

Consumption = (54 × 36) × 2 + (42 × 85) × 4 ÷ 36 ÷ 59 + 5%
= 3888 + 14280 ÷ 6.45 ÷ 36 ÷ 59 + 5%
= 1.33 + 0.05
= 1.38 yds / pcs

Per dz = 1.38× 12

= 15.84 /dz (ypd) + 5%(wastage)
= (15.84 × 5/ 100) + 15.84
= 0.792 + 15.84
= 16.63 yds

If the price for the fabric is $0.95 per yds. The cost for the garment will be

Cost per dozen (Fabric) = 0.95 x 16.63

= $ 15.80

Accessories: cost /dz      = US $ 6.00 (1 piece all time $ .15)

CM /dz   = US $ 10.00
………………………………………………………………..
Subtotal = US $ 31.80

Transport cost from factory to sea or airport (.5%) = US $ 0.20
Clearing and forwarding cost (2%)                         = US $ 0.90
Overhead cost (.5%)                                             = US$ 0.20
Net cost price                                                       = US$ 33.10
Profit (10%)                                                          = US $ 4.2
……………………………………………………………………………………………………………………
Net FOB price                                                     = US$ 37.30

Freight (4%)                                                          = US$ 2.00
Net C & F price                                                    = US$ 39.30
Insurance (1%)                                                      = US$ 0.48
…………………………………………………………………………………………………………………..
Net CIF price                                                      = US $ 49.12

Example:
Calculate the fabric consumption for the given specification of a woven trouser/pant. The measurements are provided in Table.

Table: Measurement details of woven trouser/pant

Description ———————-Measurements in inch

  • Inseam length ————-34″
  • Half of thigh —————13″
  • Back rise ——————-15″
  • Waist band width ———1.5″
  • Pocket length ————–7″
  • Pocket width ————–6.5″
  • Belt loop (l*w) – 5 numbers –1.5″ * 0.5″
  • Waist band circumference —–38″
  • Pocket back (l*w) ————–7.5″ * 6.5″
  • Fabric width (1″ selvedge) —–58″
  • Non-woven fabric width ——-58″
  • Waste % ————————5%

Solution:

From the provided data, the components of this garment are,

Front – 2 panel, Back – 2 panel, Waist band – 1, Pocket – 2 set, Belt loop – 5 numbers and Pocket bag – 2 set.

From the measurement, the full length is = (in seam + back raise)
= 34 + 15 = 49”

The main fabric consumption =

[ (Max body length x Max body width x number of panel) +
(Pocket length x Width x number of pockets) + (frint wait x length width x 2) +
(Belt loop width x length x number of loops)]
——————————————————————————————————————— + waste%
…………………………………….(Fabric width – selvedge) x 39.37

….{(49 x 13 x 4) + (7 x 6.5 x 2) + (38 x 1.5) + (1.5 x 0.5 x 5)}
= ——————————————————————————————— + 5%
……………………………………(58 – 1) x 39.37

….2548 + 91 + 57 + 3.75
= ——————————————- + 5%
…………..57 x 39.37

….2699.75
= —————— + 5%
….2244.09

= 1.2030 + 5% of 1.2030 = 1.2632

Fabric consumption = 1.2632 metre / trouser.

The pocket bag fabric consumption
If the pocket fabric used in different fabric, that particular fabrics width need to be considered in this calculation. In this case, there is no information about separate fabric. Hence, it is assumed that the pocket bag produced from the body fabric. So the same fabric width is used.

….(Pocket bag length x width x 2)
= ————————————————— + 5%
……………(58 – 1) x 39.37

….7.5 x 6.5 x 2
= ——————— +5%
….57 x 39.37

……..97.5
= —————— + 5%
…..2244.09

= 0.0434 + 5% of 0.0434 =0.0456 metre / pant

The non-woven fabric consumption
The nonwoven fabric is used as interlining material in the waist band. If informations regarding the width of the non-woven is provided it can be used. If not it is better to enquire the availability in the stores. Based on the available width it can be used, in this case the same width is provided.

…..(Waist band circumference x width)
= ——————————————————– + 5%
………………….(58 – 1) x 39.37

…..38 x 1.5
= —————- + 5%
….57 x 39.37

………57
= ————- + 5%
….2244.09

= 0.0254 + 5% of 0.0254 =0.02667 metre / trouser

The consumption details of the woven pant/trouser are as follows:

  • Main fabric = 1.2632 metre / trouser.
  • Pocket fabric = 0.0456 metre / trouser
  • Non-woven material = 0.02667 metre / trouser

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1 thought on “Consumption Calculation for Woven Basic Pant/Trouser”

  1. You are so interesting! I don’t think I have read anything like that before. So good to find another person with original thoughts on this topic. Really.. many thanks for starting this up. This site is something that is needed on the internet, someone with a bit of originality!

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