Roll back type snow fence - has vertical tubular uprights held by tension wires and pegs with stretched netting between

摘要

The netting is preferably plastics and is formed of horizontal and vertical strips one to four centimetres wide leaving rectangular gaps between them of a rough size of three times five centimetres. The netting is attached to the uprights by means of a U-shaped bracket made, for instance of strong iron wire. The width between the two sides of the bracket is a little more than the width if the horizontal meeting strips. The two downward-bent ends of the bracket are inserted into holes in the uprights. That part of the netting enclosed by the bracket is protected by a plastics strip. The ends of the bracket rest against the inside surface of the tubular uprights; alternatively the ends may go through the uprights and emerge through two holes opposite, where the ends bend down also at right angles to rest against the outer surface of the uprights.