Book back-calculate: the formula for the measure
To calculate the thickness of a book spine is not a difficulty. You just need to bring in experience, what is the thickness of the paper and the envelope. The more massive the Material, the thicker the book is.
- The formula is generally: (page number/2) * (thickness/1000). The sheet is multiplied thickness number of the book paper. You will receive as a result of a value in millimeters.
- The so-called grammage, the paper thickness is an essential part of the formula and is expressed in g/sq. m. (grams per square meter). This Information is supplied with each paper block. Your print shop can give you good information.
- An example: paper thickness: 90 g/sqm and 250 pages. Formula: (250/2) * (90/1000) = 11,25 Mm.
- Still not the thickness of the envelope is taken into account, however. Depending on the substance and nature of the value can vary greatly.
- If you know the thickness of the paper of the envelope, you can apply the above formula again. Only with the difference that the first Term now corresponds to 2 (front and back): 2 * (paper thickness/1000).
- If the weight is not known, you need to estimate the thickness measure or in an emergency.
- Add together the amounts of content and handling, and you have calculated the dimensions of the book spine.
Buckrücken calculate (image: Jonas Brandstetter)
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