How
To Calculate Fabric Consumption For Trouser
Trouser is one
of the common garment manufacturing item in the apparel industry. Knitted
Trouser can be made from fleece fabric or single jersey. Calculation process of
fabric consumption for trouser is same for both fabric types. But we will
continue our discussion with fleece fabric. As already discuss about it, we
know fabric costs are taking almost 60% of total manufacturing cost of the
garment product. Don’t be confused, as already discuss fabric consumption for
T-shirt, polo shirt & hoodie sweatshirt. You can see below link for the
full article above mentioned topic.
We continue our discussion on fabric consumption of knit items.
Today we will see the consumption process of a knitted trouser with example.
For garment Merchandiser, fabric consumption is a regular activity. If CAD
system is not a workout, sometime merchandiser need to calculate fabric
consumption manually. For better understanding and calculation process of
fabric consumption, follow the below formula and example;
Find the below
formula, which we will use to calculate the fabric consumption for knitted trouser;
Formula - 01: In
centimeter
{(IL + Allowance + CFR
+ Allowance + WBW + Allowance) x (HTC + Allowance)} x 4 x GSM / 10,000 / 1000 +
10% (Wastage and extra cutting) x Doz.
Where,
IL = Inseam
Length
CFR = Center front
rise
WBW = Waist Belt
Width
HTC = Half Thigh
Circum
Formula - 02: In Inch
{(IL + Allowance + CFR
+ Allowance + WBW + Allowance) x (HTC + Allowance)} x 4 x GSM / 1550 / 1000 +
10% (Wastage and extra cutting) x Doz.
For better
understanding we will practice both options. First of all, we need below
information to calculate fabric consumption;
·
Fabric GSM of the
garment
·
Garment measurement
sheet
·
Cutting and sewing
allowance
For calculating fabric consumption of trouser, we will do that
separately;
1. Fabric consumption for body
2. Fabric consumption for pocket
3. Total consumption of the garment
Formula - 01: If garment measurement uses in CM (Centimeter)
Suppose, the knitted
fleece trouser has been following information. Now we will calculate the fabric
consumption based on below information measurement;
Item: Knitted fleece
fabric, fabric GSM (Gram per square) is 260.
Measurement
|
Without allowance
|
With allowance
|
Inseam (IL)
|
70.2 cm
|
= 70.2 + 3 = 73.2 cm
|
Front Rise (CFR)
|
23.70 cm
|
= 23.70 + 3 = 26.7 cm
|
Waistband height
|
3.50 cm
|
= 3.50 + 3 = 6.5 cm
|
½ Thigh (HTC)
|
34.70 cm
|
= 34.7 + 3 = 37.7 cm
|
As per above
measurement of this style, the body fabric consumption is;
(IL + CFR + WBW) x
½HTC x 4 x GSM / 10,000 / 1000 + 10% (Wastage and extra cutting) x Doz.
= (73.2 + 26.7 + 6.5)
x 37.7 x 4 x 260 / 10,000 / 1000 + 10% x 12
= 5.507 kg / Doz.
Measurement
|
Without allowance
|
With allowance
|
Pocket Length
|
13 cm
|
= 13 + 3 = 16 cm
|
Pocket Width
|
12.5 cm
|
= 12.5 + 3 = 15.5 cm
|
As per above
measurement of this style, the pocket fabric consumption is;
= Pocket Length x
Pocket Width x 4 x GSM / 10,000 / 1000 + 10% (Wastage and extra cutting) x
Doz.
= 16 x 15.5 x 4 x 260
/ 10,000 / 1000 + 10% x 12
= 0.340 kg /
Doz.
Note: We calculated pocket fabric consumption
based shell fabric.
So, as per above
consumption of this style, total fabric consumption for hoodie sweatshirt
is;
Body fabric
consumption + Pocket fabric consumption
= 5.507 + 0.340 kg /
Doz.
= 5.847 kg /
Doz.
We need total 5.847 kg
per Doz. to complete garment of knitted trouser.
Formula - 02: If garment
measurement uses in Inch
Suppose, the knitted
fleece trouser has been following information. Now we will calculate the fabric
consumption based on below information measurement;
Item: Knitted fleece fabric,
fabric GSM (Gram per square) is 260.
Measurement
|
Without allowance
|
With allowance
|
Inseam (IL)
|
27.64 inch
|
= 27.64 + 2 = 29.64 inch
|
Front Rise (CFR)
|
9.33 inch
|
= 9.33 + 2 = 11.33 inch
|
Waistband height
|
1.38 inch
|
= 1.38 + 2 = 3.38 inch
|
½ Thigh (HTC)
|
13.66 inch
|
= 13.66 + 2 = 15.66 cm
|
As per above
measurement of this style, the body fabric consumption is;
(IL + CFR + WBW) x
½HTC x 4 x GSM / 1550 / 1000 + 10% (Wastage and extra cutting) x Doz.
= (29.64 + 11.33 +
3.38) x 15.66 x 4 x 260 /1550 / 1000 + 10% x 12
= 6.15 kg / Doz.
Measurement
|
Without allowance
|
With allowance
|
Pocket Length
|
5.12 inch
|
= 5.12 + 2 = 7.12 inch
|
Pocket Width
|
4.92 inch
|
= 4.92 + 2 = 6.92 inch
|
As per above
measurement of this style, the pocket fabric consumption is;
= Pocket Length x
Pocket Width x 4 x GSM / 1550 / 1000 + 10% (Wastage and extra cutting) x
Doz.
= 7.12 x 6.92 x 4 x
260 / 1550 / 1000 + 10% x 12
= 0.44 kg / Doz.
Note: We calculated pocket fabric consumption
based shell fabric.
So, as per above consumption
of this style, total fabric consumption for hoodie sweatshirt is;
Body fabric
consumption + Pocket fabric consumption
= 6.15 + 0.44 kg /
Doz.
= 6.59 kg / Doz.
We need total 6.59 kg
per Doz. to complete garment of knitted trouser.
To calculate the
fabric consumption of a garment, CAD marker is the best option to estimate
accurate fabric consumption. But sometime we need to calculate fabric
consumption manually if CAD marker is not available.