FIELD: games; entertainment.
SUBSTANCE: covering contains an elastic lower layer, fastening grid made from plastic material and located above the elastic layer, and elements of the upper layer. The latter are made from artificial corrugated fibre with wave pitch of 2.5-3 cm and wave height of 1.0-1.5 mm. Length of fibres from the connection point thereof is 35-39 cm, and number of fibres is 100-120 pcs/10 cm of the cross dimension of the upper layer element. Fibre fusion area is about 4.5 cm across the fibre length. Safety plates are equipped with stiffeners and arranged from upper layer elements location point. Elements of the covering are attached to the fastening grid by cable braces in the fibre fusion area, and distance between the axes of holes meant for cable braces to be installed is not more than 250 mm.
EFFECT: improving safety and reliability of the covering attachment and reducing flexibility of fibres.
2 cl, 2 dwg
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