The main point when designing a snow retention system is the correct choice and calculation of the number of supports. At the same time, the type of roof, snow load, type and step of the crate, the size of the racks of the crate, as well as the material and the geometry of the support itself are taken into account. For very steep and long roofs, it is technically reasonable to mount several rows of snow retention, distributing them along the perimeter of the roof from the cornice to the ridge. This allows you to optimally distribute the snow load over the entire area of the roof.