The 21st century is rightly considered the time of information technology. A colossal amount of data is transmitted daily in the world.
A significant part of this amount consists of computer information and materials, however, in many cases, the use of paper media for the above purposes is still encouraged. In this regard, international standards have been developed that most fully describe all commonly used sheet sizes. Since each scrap of paper has strictly defined dimensions, the relevant state standards were also developed by legislation where all sheet formats are indicated.
Of the concept
Currently, there are two well-known systems that determine paper size: international and North American regulations. Each of them has its own characteristics.
International standard
Based on the well-known metric measurement system. Initially, a paper sheet with an area equal to one square meter (A0) was adopted. All other sheet formats of such a system were obtained by adding the so-called source in half. After all, everyone knows that A1 is half as much as A0; A2 - twice the size of A1 and so on. Denote the length and width for each of the formats: A0 - length 1189 mm, width 841 mm; A1 - 841x594; A2 - 594x420; A3 - 420x297; A4 - 297x210; A5 - 210x148; A6 - 148x105.
It is also important to remember that the international standard (GOST "Formats of sheets") includes a number of series: A, B and C. Each of them is used in its own field of human life. For example, Series A is characterized by the trim sizes of various stationery papers. It is also widely used as the basis of office documentation; for the manufacture of white goods, as well as in the production of print media.
Formats of sheets of series B most fully captured the niche that is responsible for the production of posters, posters, flyers, as well as passports and envelopes. Paper sheets of this series are the least common in the modern world, since they are rarely used in business. Nevertheless, sheet formats (GOST 2.301-63) B5 with dimensions of 176x250 mm can be found quite often, since they are used by publishing houses for printing books.
Series C is intended for the production of envelopes in which papers of series A sizes will later be embedded. A feature of this category can be considered that the dimensions of a sheet of C-series will be equal to the geometric average of the sizes of paper A and B of the same number. Thus, we get that the formats of sheets C4 will be slightly larger than the dimensions of A4, but smaller than B4. This is done so that a A4 paper document can be embedded in an envelope in C4 format, and that, in turn, can be embedded in a denser folder B4.
North American standard
You will rarely see paper with such dimensions in the territory of the former USSR. Sheet types of this type are defined by the American National Standards Institute, better known by the acronym ANSI. However, in companies whose daily activities are associated with organizations of the American continent, sometimes you can see the Letter format. It is important to know that sheets of paper of similar sizes are state standards not only in the United States, but also in Mexico, Canada, the Philippines, as well as a number of countries in the South American continent.