# Textile Calculation

## Yarn Consumption for a Fabric

Yarn Consumption for a Fabric
Md. Abu Sayed
Founder of Textile Apex
Pabna Textile engineering college, Pabna, Bangladesh
Cell : +8801745214773

Introduction:
To produce a particular woven fabric of particular fabric specification, yarn consumption can be theoretically calculated. The process of yarn consumption calculation of a particular woven fabric is explained with the help of an example.
Problem:
Calculate the yarn consumption per yard of a woven fabric of specification (20 X 16)/(128 X 60) X 58”, 100% cotton 3/1 twill fabric.

Solution:
Requirement of yarn for the fabric is to be calculated for both warp yarn and weft yarn separately as because the warp and weft yarns are of 20s and 16s respectively. Here, for easy understanding yarn consumption for 100 yards grey fabric production is done. At the end, yarn consumption per yard of grey fabric will be converted.

Warp yarn (20s) requirement
= (128 X 58)/1 X 100/1 X 1/(840 X 20) lbs
= 44.19 lbs

Weft yarn (16s) requirement
= (60 X 36 X 100 X 58)/(1 X 36) X 1/(840 X 20) lbs
= 25.89 lbs

Some allowances to be added to the yarn requirements for the following factors:

a. Crimp allowances ………. 10%
b. Yarn wastage ………….... 5%
………………………………………………….
Total ………..................… = 15%

Hence the actual yarn requirements including crimp allowance and yarn wastage allowance will be –

Warp yarn (20s) = 44.19 lbs X 1.15 = 50.82 lbs
Weft yarn (16s) = 25.89 X 1.15 = 29.77 lbs

Now, for each yard of the said fabric production yarn consumption will be –

Warp yarn (20s) = 50.82 / 100 = 0.51 lbs
Weft yarn (16s) = 29.77 / 100 = 0.30 lbs