Snowstorm guard fence structures and jet roofs

Abstract From the Canadian patent

A snowstorm guard fence structure is constructed by anchoring a wall overhanging at an upward slop to a road side to a supporting wall disposed along one end side of the road. The thus constructed structure can be placed on side end places of roads, has a space to discard the snow removed from the road, and also is effective for preventing snowstorm regardless of the degree of wind velocity and the presence of shelter structures. A jet roof is constructed by disposing a plurality of props on the slant and providing a plurality of pannels between the props at spaces for jet openings so that the jet openings are gradually narrowed toward the road side. The thus constructed jet roof is …