It is very difficult to mathematically calculate how much fabric is needed to make a garment if you want the style and/or draping qualities of bias cut cloth.
Also, for example, you will need much more fabric for a full-skirted dress than you will for a close-fitting style.
Once you have decided upon the design, shape, features and length you want, and how you want any fabric patterns to appear on the finished garment, the next step is to make paper patterns of all the panels and pieces you will need, allowing for comfort, body shape and undergarments, and making due allowance for zip, hem, seams, placing of seams, pockets, making the waistband/belt and trimmings, and very carefully allowing for the extra material necessary for pleats and flares.
And you will need to know the width of the fabric you are going to use. Check with suppliers regarding widths and availability of suitable cloths before you commit yourself to a particular fabric or design.
Clothing fabrics are made in different widths. 150cm (59 inches) is fairly common, but the fabric you have chosen may only be available in a different width.
When you know the width of your fabric, the ideal would be to have a large work table where you can lay out your paper patterns, having marked each piece with a straight line and 'down' arrow. Then you be able to see how best the material could be cut from those patterns and within the edges of that fabric. When laying out the patterns, make sure that the lines and down arrows are always at 45 degrees to the edge of the cloth. You will also need to ensure that you have your paper patterns 'the right way round and the right way up', especially if the material has important stripes or repeating patterns that need to be matched in the finished garment.
If you do not have a suitable table or work surface, you can lay your patterns on the floor.
When you have correctly positioned all the paper patterns, with due allowance for cutting off selvedge and ensuring that repeating fabric patterns will be aligned, you will then be able to measure how much of that fabric you will need.
A simple bias cut A-line skirt can be made from about 3m of 150cm width material, but a heavily pleated skirt will take much more. The actual amount of material needed will vary according to the size and style of the skirt, the width of the fabric and the size of any repeating patterns in/on the fabric.
Of course, if you are working with a pre-cut paper pattern for a particular bias cut style, the instructions on the pack will usually tell you how much fabric is needed.
Fabric cut along the bias has stretch and allows it to go around curves
That is the bias. When you have a pattern that states "cut on bias" the pattern piece would be placed in a fastion that would be a "diagonal line against fabric grain". Pattern pieces cut in this fashion are sometimes more difficult to sew because when fabric is cut on the bias it gives the cut edge more of a stretch.
Looking closely at a square of fabric, you will see a thread that runs vertically and a thread that runs horizontally, this is galled the grain of the fabric. Bias cut fabric is fabric that is cut diagonally to the grain. In other words, if you cut off a corner and then cut another strip at the same diagonal, say 2 1/2 inches wide, you will have a bias cut fabric. this strip of fabric can then be folded taking both outer edges toward the center and then folded again in half. It can be used to finish anything from blankets, quilts garments etc. as it is very bendable and pliable because it stretches as a result of being cut on the bias.
The word is "bias." It can refer to a form of prejudice or a fabric that is cut diagonally across the grain to have more stretch and flexibility.
Fabric which is cut 'on the bias' is neither cut across the weave nor along it, but at a diagonal between them - imagine the diagonal of a square and this is the line that a bias cut follows. Farbic cut in this way tends to drape around the body well and 'clings' far more than a standard cut.
Fabric cut on the bias has more stretch than fabric cut on the straight of grain. For this reason, bias tape easily fits around corners and curves. To make yards and yards of continuous bias tape, lay out fabric and cut off one end at a 45-degree angle. Sew this cut piece to the other end. See Diagram #1. On the reverse side of the fabric, mark off the desired bias tape width parallel to the 45 degree edge. (Diagram #1 shows five strips but mark as many as your fabric will allow.) Place the two lengthwise edges right sides together and offset both ends the desired width of the finished tape. For example, for 1-1/4" tape, offset piece #1 and #5 (shown in Diagram #2) 1-1/4". Sew a 1/4 " seam along the length of the fabric creating a spiraled piece of fabric. Cut along the marked lines in the spiral starting at the line between #1 and #2 and continue to the end. To figure how much bias tape you will get out of a piece of fabric: (1) Measure your piece of fabric that you are going to be cutting your bias strips from. (2) Now multiply the measurement of the fabric by itself to get the squares inches of the area. (3) Then divide the squares inches by the desired width of the bias strip. For Example : Square = 12" So 12 x 12 = 144 square inches Bias Tape Width = 2" Therefore, 144 / 2 = 72 " of 2" wide bias strips from a 12" square
Your question forces me to bias my answer in your favor. Please attenuate the bias in that circuit. As a noun: To avoid a bias in the results, the survey should include a cross section of age groups. As an adjective: A bias cut fabric will give the garment more flexibility. As an adverb: If you bias cut the wood, it will add more dimension to the piece. As a verb: Revealing the witness' background could bias the testimony for the jury.
The question is open ended. However according the costing formula prior to costing complete garment making, you have to calculate how much fabric is need to make the garment (Use Medium). Calculate fabric Consumption (refer: http://www.onlineclothingstudy.com/2011/03/how-to-measure-fabric-consumption-of.html ). Once you get fabric consumption in Kg multiply it with with fabric cost. Simple formula is = material cost + Cut and Make (CM) cost + Overhead Where, - Material cost includes fabric cost, all trims and packing material cost. - CM includes cutting fabric and stitching cost. - and overhead is staffs cost and factory running cost. this taken as a percentage of Material cost and CM cost. For details you can refer to my site: www.onlineclothingstudy.com
The way the fabric is woven gives it different properties in different directions. When you are cutting a pattern you want to get all the pieces on the same "grain", i.e. a piece that will be vertical on your body should not be cut diagonally on the peace of fabric (unless you cut all the pieces diagonally or on the bias). The grain of the fabric is the natural direction of the fabric, usually up and down along the length of the fabric.
Bias strips are cut on a 45 degree slant from the grain of the fabric. One common strip width is 2 1/2 inches wide, which produces a 1/2 wide binding on the front and back of the quilt. Cut the fabric using a rotary cutter, rotary ruler and cutting mat. First, press to remove creases at the fold. To make the first cut across the fabric, place the fabric open on the cutting mat, take one corner and lay it along the opposite side to make a triangle and a new fold line and place the ruler on the fabric. Make the first cut along the new diagonal fold of fabric. Then move the ruler over 2 1/2 inches, aligning the ruler with the first cut, and make the second cut, which will give you two bias strips that are 2 1/2 inches wide and more than 40 inches long.
Humans are the only creature that uses bias.Bias can be a good thing if you have a bias against poor quality and carelessness.A bias toward one group or another can deprive you of enjoying the company of many different people.Read the survey carefully because many have questions designed to bias the result.If you cut the fabric on a bias, the garment will have flexibility.
It depends on what type of dress you are making - whether or not it's a full skirt, what the sleeve length is, if it's bias cut or not, if it's lined, etc. Generally speaking, a sleeveless, non-bias cut, long gown will take approx 3-4 yards of fabric, and another 3 yards of lining. A gown with a full skirt or long sleeves may require closer to 6 yards of fabric.