Rate of at

If the soil is sandy, the devices of the bearing layer are not required. For the installation of the base on ordinary soil, clean, homogeneous sand without pebbles and clay impurities is used. A layer of sand 5-10 cm is poured into the prepared bed, leveled using a rake and rules. Further, the sand layer must be shed at the rate of at least 10 liters of water per square meter.