Useful articles

Construction of prefabricated frame and awning cowsheds is one of the best versions. Modern technologies for construction of the cowsheds, inexpensive foundations, short construction time, low material consumption of the structure, possibility of using a leasing payment scheme-all this will minimize construction costs.

The use of a new technology of loose cold keeping of cattle has helped many farms to reduce the cost of milk production. Cold breeding of cattle means breeding the cattle in unheated cowsheds. Cows are kept without a leash. Many commercial companies offer foreign technologies and equipment. But it happens that the money spent in the new system of breeding the cattle does not pay off. It also happens that the poor ventilation of cowsheds causes failures. In winter, the air is to be updated in the cowshed 4 times per hour with an outside air supply of at least 15 m3 / h per 100 kg of cow weight. In summer, 40x air exchange is required. The problem is how to achieve it.

The loose keeping the cattle is the future of dairy production in the United States and Europe. There is an amazing fact: 40 or more years ago, people used to place cows in their homes, paddock, in a stable, which was a part of the home, and people managed to warm their houses in this way thanks to the heat of their animals. And one day, for some reason, people decided that cattle needed a cowshed with temperatures that were close to those in residential areas. This was how the system of tethered keeping of the cattle was created, which was used by most farms. Such maintenance is outdated and reduces the productivity potential of the cattle, which it has due to its genetic characteristics.

A flat and even riding arena should be 60 m long and 20 m wide. The difference in level along the diagonals or along the long wall should in no way exceed 50 cm. On short walls, the difference in level should in no way exceed 20 cm. The ground of the arena should be mostly sandy.

According to the IIHF rules, the site is expected to have a maximum size of 61 x 30 meters, and a minimum allowable size of 56 x 26 meters; dimensions of 61-60 m in length and 30-29 m in width are allowed in official competitions under IIHF guidance.

NHL rules prescribe the size of the site in 200x85 feet, that is 60.96 x 25.90 meters, i.e. NHL site is already 4 meters.

p>When choosing the size of the court, it is important to remember and to know that the tennis court is not only a 24.0 x 11.0 m site, but the entire area has races to the fence. That is, the size of the court is determined by the size of the fence. The standard width of side races is 3.6 m on each side.

The basketball court— is a site for playing basketball, which is a rectangular flat hard surface without any obstacles.

The size of the playing area shall be 28 meters long and 15 meters wide from the inner edge of the bounding lines for official FIBA competitions. Existing playgrounds shall have a minimum size of 28x15 meters for all other competitions.

The size of the site is 18 meters long and 9 meters wide. The site is divided into two parts measuring 9×9 meters by using a meter-wide grid. The grid is located in a way that its highest point is 2.43 meters above the ground for men's competitions and 2.24 meters for women's competitions (the height may vary for veterans and juniors).

The game takes place indoors on a rectangular area of 40x20 m size. There shall be a safety zone around the area that is at least 1 m along the side lines and at least 2 m behind the goal line. Long boundary areas are called side lines, short lines (between the goalposts) or outer goal lines (outside the gate). All lines are a part of the areas they limit. The width of all marking lines is 5 cm (with the exception of the goal line width between the posts is 8 cm).