The measurements are based on the fact that the diameter of the round cell and the length of the side of the square are identical, which means that only pieces of breed of no more specific size can pass through them. However, the length of the diagonal of the square is greater than the diameter of the circle and when it enters the sieve at a certain angle, several larger fractions pass through it through it. As a result, a breed of far from the cleanliness on which the technological process of manufacturing the roadway is designed to the strip feeder.